Added market place specific feature

kifi-api/src/main/java/com/kifi/api/controller/invoice/CreditNoteController.java

@@ -0,0 +1,48 @@
+package com.kifi.api.controller.invoice;
+
+import com.kifi.api.entity.invoice.CreditNote;
+import com.kifi.api.service.invoice.CreditNoteService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.security.core.Authentication;
+import org.springframework.web.bind.annotation.*;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+@RestController
+@RequestMapping("/api/kifi-v2")
+@RequiredArgsConstructor
+public class CreditNoteController {
+
+    private final CreditNoteService creditNoteService;
+
+    @GetMapping("/credit-notes")
+    public Flux<CreditNote> getCreditNotes(Authentication authentication) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return creditNoteService.getCreditNotes(userId);
+    }
+
+    @GetMapping("/credit-notes/{id}")
+    public Mono<CreditNote> getCreditNoteById(
+            @PathVariable Long id,
+            Authentication authentication) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return creditNoteService.getCreditNoteById(id, userId);
+    }
+
+    @GetMapping("/invoices/{invoiceId}/credit-notes")
+    public Flux<CreditNote> getCreditNotesForInvoice(
+            @PathVariable Long invoiceId,
+            Authentication authentication) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return creditNoteService.getCreditNotesForInvoice(invoiceId, userId);
+    }
+
+    @PostMapping("/invoices/{invoiceId}/credit-notes")
+    public Mono<CreditNote> createCreditNote(
+            @PathVariable Long invoiceId,
+            Authentication authentication,
+            @RequestBody CreditNote creditNote) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return creditNoteService.createCreditNote(userId, invoiceId, creditNote);
+    }
+}

kifi-api/src/main/java/com/kifi/api/controller/invoice/MarketplaceSettlementController.java

@@ -0,0 +1,48 @@
+package com.kifi.api.controller.invoice;
+
+import com.kifi.api.entity.invoice.MarketplaceSettlement;
+import com.kifi.api.service.invoice.MarketplaceSettlementService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.security.core.Authentication;
+import org.springframework.web.bind.annotation.*;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+@RestController
+@RequestMapping("/api/kifi-v2")
+@RequiredArgsConstructor
+public class MarketplaceSettlementController {
+
+    private final MarketplaceSettlementService settlementService;
+
+    @GetMapping("/marketplace-settlements")
+    public Flux<MarketplaceSettlement> getSettlements(Authentication authentication) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return settlementService.getSettlements(userId);
+    }
+
+    @GetMapping("/marketplace-settlements/{id}")
+    public Mono<MarketplaceSettlement> getSettlementById(
+            @PathVariable Long id,
+            Authentication authentication) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return settlementService.getSettlementById(id, userId);
+    }
+
+    @GetMapping("/invoices/{invoiceId}/settlements")
+    public Flux<MarketplaceSettlement> getSettlementsForInvoice(
+            @PathVariable Long invoiceId,
+            Authentication authentication) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return settlementService.getSettlementsForInvoice(invoiceId, userId);
+    }
+
+    @PostMapping("/invoices/{invoiceId}/settlements")
+    public Mono<MarketplaceSettlement> createSettlement(
+            @PathVariable Long invoiceId,
+            Authentication authentication,
+            @RequestBody MarketplaceSettlement settlement) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return settlementService.createSettlement(userId, invoiceId, settlement);
+    }
+}

kifi-api/src/main/java/com/kifi/api/entity/inventory/Product.java

@@ -5,6 +5,7 @@ import lombok.Builder;
 import lombok.Data;
 import lombok.NoArgsConstructor;
 import org.springframework.data.annotation.Id;
+import org.springframework.data.relational.core.mapping.Column;
 import org.springframework.data.relational.core.mapping.Table;
 
 import java.math.BigDecimal;
@@ -58,6 +59,19 @@ public class Product {
     private Double makingCharges;
     private String makingChargesType;
     private Double wastagePercentage;
+
+    @Column("min_stock")
+    private BigDecimal minStock;
+
+    @Column("reorder_level")
+    private BigDecimal reorderLevel;
+
+    @Column("reorder_quantity")
+    private BigDecimal reorderQuantity;
+
+    @Column("track_inventory")
+    private Boolean trackInventory;
+
     private Boolean isActive;
     private LocalDateTime createdAt;
     private LocalDateTime updatedAt;

kifi-api/src/main/java/com/kifi/api/entity/invoice/CreditNote.java

@@ -0,0 +1,86 @@
+package com.kifi.api.entity.invoice;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import org.springframework.data.annotation.Id;
+import org.springframework.data.annotation.Transient;
+import org.springframework.data.relational.core.mapping.Column;
+import org.springframework.data.relational.core.mapping.Table;
+
+import java.math.BigDecimal;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.util.List;
+
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+@Table("credit_notes")
+public class CreditNote {
+    @Id
+    private Long id;
+
+    @Column("user_id")
+    private Long userId;
+
+    @Column("invoice_id")
+    private Long invoiceId;
+
+    @Column("credit_note_number")
+    private String creditNoteNumber;
+
+    @Column("customer_id")
+    private Long customerId;
+
+    @Column("return_date")
+    private LocalDate returnDate;
+
+    @Column("reason")
+    private String reason; // CUSTOMER_RETURN, RTO_UNDELIVERED, DEFECTIVE, EXCHANGE, OTHER
+
+    @Column("restock_items")
+    @Builder.Default
+    private Boolean restockItems = true;
+
+    @Column("subtotal")
+    private BigDecimal subtotal;
+
+    @Column("tax_total")
+    private BigDecimal taxTotal;
+
+    @Column("cgst_total")
+    private BigDecimal cgstTotal;
+
+    @Column("sgst_total")
+    private BigDecimal sgstTotal;
+
+    @Column("igst_total")
+    private BigDecimal igstTotal;
+
+    @Column("discount_total")
+    private BigDecimal discountTotal;
+
+    @Column("total_amount")
+    private BigDecimal totalAmount;
+
+    @Column("refund_status")
+    private String refundStatus; // ADJUSTED_TO_AR, REFUNDED_TO_WALLET, STORE_CREDIT, PENDING
+
+    @Column("refund_wallet_id")
+    private Long refundWalletId;
+
+    @Column("notes")
+    private String notes;
+
+    @Column("created_at")
+    private LocalDateTime createdAt;
+
+    @Column("updated_at")
+    private LocalDateTime updatedAt;
+
+    @Transient
+    private List<CreditNoteItem> items;
+}

kifi-api/src/main/java/com/kifi/api/entity/invoice/CreditNoteItem.java

@@ -0,0 +1,78 @@
+package com.kifi.api.entity.invoice;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import org.springframework.data.annotation.Id;
+import org.springframework.data.relational.core.mapping.Column;
+import org.springframework.data.relational.core.mapping.Table;
+
+import java.math.BigDecimal;
+
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+@Table("credit_note_items")
+public class CreditNoteItem {
+    @Id
+    private Long id;
+
+    @Column("credit_note_id")
+    private Long creditNoteId;
+
+    @Column("invoice_item_id")
+    private Long invoiceItemId;
+
+    @Column("product_id")
+    private Long productId;
+
+    @Column("inventory_item_id")
+    private Long inventoryItemId;
+
+    @Column("product_name")
+    private String productName;
+
+    @Column("sku")
+    private String sku;
+
+    @Column("huid")
+    private String huid;
+
+    @Column("hsn_code")
+    private String hsnCode;
+
+    @Column("quantity")
+    private BigDecimal quantity;
+
+    @Column("weight")
+    private BigDecimal weight;
+
+    @Column("unit_price")
+    private BigDecimal unitPrice;
+
+    @Column("tax_rate")
+    private BigDecimal taxRate;
+
+    @Column("cgst")
+    private BigDecimal cgst;
+
+    @Column("sgst")
+    private BigDecimal sgst;
+
+    @Column("igst")
+    private BigDecimal igst;
+
+    @Column("discount")
+    private BigDecimal discount;
+
+    @Column("making_charge")
+    private BigDecimal makingCharge;
+
+    @Column("other_charges")
+    private BigDecimal otherCharges;
+
+    @Column("total")
+    private BigDecimal total;
+}

kifi-api/src/main/java/com/kifi/api/entity/invoice/Invoice.java

@@ -89,6 +89,24 @@ public class Invoice {
     @Column("marketplace_order_id")
     private String marketplaceOrderId;
     
+    @Column("courier_partner")
+    private String courierPartner;
+
+    @Column("tracking_number")
+    private String trackingNumber;
+
+    @Column("dispatch_status")
+    private String dispatchStatus; // PENDING, PACKED, SHIPPED, IN_TRANSIT, DELIVERED, RTO
+
+    @Column("shipped_at")
+    private LocalDateTime shippedAt;
+
+    @Column("shipping_address")
+    private String shippingAddress;
+
+    @Column("shipping_pincode")
+    private String shippingPincode;
+
     @Column("place_of_supply_state_id")
     private Long placeOfSupplyStateId;
 

kifi-api/src/main/java/com/kifi/api/entity/invoice/MarketplaceSettlement.java

@@ -0,0 +1,90 @@
+package com.kifi.api.entity.invoice;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import org.springframework.data.annotation.Id;
+import org.springframework.data.relational.core.mapping.Column;
+import org.springframework.data.relational.core.mapping.Table;
+
+import java.math.BigDecimal;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+@Table("marketplace_settlements")
+public class MarketplaceSettlement {
+    @Id
+    private Long id;
+
+    @Column("user_id")
+    private Long userId;
+
+    @Column("invoice_id")
+    private Long invoiceId;
+
+    @Column("sales_channel_id")
+    private Long salesChannelId;
+
+    @Column("channel_name")
+    private String channelName;
+
+    @Column("settlement_ref")
+    private String settlementRef;
+
+    @Column("settlement_date")
+    private LocalDate settlementDate;
+
+    @Column("gross_amount")
+    private BigDecimal grossAmount;
+
+    @Column("commission_fee")
+    @Builder.Default
+    private BigDecimal commissionFee = BigDecimal.ZERO;
+
+    @Column("shipping_fee")
+    @Builder.Default
+    private BigDecimal shippingFee = BigDecimal.ZERO;
+
+    @Column("other_fees")
+    @Builder.Default
+    private BigDecimal otherFees = BigDecimal.ZERO;
+
+    @Column("fee_gst")
+    @Builder.Default
+    private BigDecimal feeGst = BigDecimal.ZERO;
+
+    @Column("tcs_gst_amount")
+    @Builder.Default
+    private BigDecimal tcsGstAmount = BigDecimal.ZERO;
+
+    @Column("tds_amount")
+    @Builder.Default
+    private BigDecimal tdsAmount = BigDecimal.ZERO;
+
+    @Column("total_deductions")
+    private BigDecimal totalDeductions;
+
+    @Column("net_payout_amount")
+    private BigDecimal netPayoutAmount;
+
+    @Column("payout_wallet_id")
+    private Long payoutWalletId;
+
+    @Column("status")
+    @Builder.Default
+    private String status = "SETTLED";
+
+    @Column("notes")
+    private String notes;
+
+    @Column("created_at")
+    private LocalDateTime createdAt;
+
+    @Column("updated_at")
+    private LocalDateTime updatedAt;
+}

kifi-api/src/main/java/com/kifi/api/repository/invoice/CreditNoteItemRepository.java

@@ -0,0 +1,9 @@
+package com.kifi.api.repository.invoice;
+
+import com.kifi.api.entity.invoice.CreditNoteItem;
+import org.springframework.data.repository.reactive.ReactiveCrudRepository;
+import reactor.core.publisher.Flux;
+
+public interface CreditNoteItemRepository extends ReactiveCrudRepository<CreditNoteItem, Long> {
+    Flux<CreditNoteItem> findByCreditNoteId(Long creditNoteId);
+}

kifi-api/src/main/java/com/kifi/api/repository/invoice/CreditNoteRepository.java

@@ -0,0 +1,13 @@
+package com.kifi.api.repository.invoice;
+
+import com.kifi.api.entity.invoice.CreditNote;
+import org.springframework.data.repository.reactive.ReactiveCrudRepository;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+public interface CreditNoteRepository extends ReactiveCrudRepository<CreditNote, Long> {
+    Flux<CreditNote> findByUserId(Long userId);
+    Flux<CreditNote> findByUserIdAndInvoiceId(Long userId, Long invoiceId);
+    Flux<CreditNote> findByUserIdAndCustomerId(Long userId, Long customerId);
+    Mono<CreditNote> findByUserIdAndCreditNoteNumber(Long userId, String creditNoteNumber);
+}

kifi-api/src/main/java/com/kifi/api/repository/invoice/MarketplaceSettlementRepository.java

@@ -0,0 +1,13 @@
+package com.kifi.api.repository.invoice;
+
+import com.kifi.api.entity.invoice.MarketplaceSettlement;
+import org.springframework.data.repository.reactive.ReactiveCrudRepository;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+public interface MarketplaceSettlementRepository extends ReactiveCrudRepository<MarketplaceSettlement, Long> {
+    Flux<MarketplaceSettlement> findByUserId(Long userId);
+    Flux<MarketplaceSettlement> findByUserIdAndInvoiceId(Long userId, Long invoiceId);
+    Flux<MarketplaceSettlement> findByUserIdAndSalesChannelId(Long userId, Long salesChannelId);
+    Mono<MarketplaceSettlement> findByUserIdAndSettlementRef(Long userId, String settlementRef);
+}

kifi-api/src/main/java/com/kifi/api/service/inventory/ProductService.java

@@ -127,6 +127,12 @@ public class ProductService {
                     existingProduct.setMakingCharges(updatedProduct.getMakingCharges());
                     existingProduct.setMakingChargesType(updatedProduct.getMakingChargesType());
                     existingProduct.setWastagePercentage(updatedProduct.getWastagePercentage());
+
+                    existingProduct.setMinStock(updatedProduct.getMinStock());
+                    existingProduct.setReorderLevel(updatedProduct.getReorderLevel());
+                    existingProduct.setReorderQuantity(updatedProduct.getReorderQuantity());
+                    existingProduct.setTrackInventory(updatedProduct.getTrackInventory());
+
                     existingProduct.setIsActive(updatedProduct.getIsActive());
                     existingProduct.setUpdatedAt(LocalDateTime.now());
                     return productRepository.save(existingProduct);

kifi-api/src/main/java/com/kifi/api/service/invoice/CreditNoteService.java

@@ -0,0 +1,239 @@
+package com.kifi.api.service.invoice;
+
+import com.kifi.api.entity.Transaction;
+import com.kifi.api.entity.inventory.InventoryItem;
+import com.kifi.api.entity.invoice.CreditNote;
+import com.kifi.api.entity.invoice.CreditNoteItem;
+import com.kifi.api.entity.invoice.Invoice;
+import com.kifi.api.repository.customer.CustomerRepository;
+import com.kifi.api.repository.inventory.InventoryItemRepository;
+import com.kifi.api.repository.invoice.CreditNoteItemRepository;
+import com.kifi.api.repository.invoice.CreditNoteRepository;
+import com.kifi.api.repository.invoice.InvoiceItemRepository;
+import com.kifi.api.repository.invoice.InvoiceRepository;
+import com.kifi.api.service.TransactionService;
+import com.kifi.api.service.accounting.LedgerService;
+import com.kifi.api.service.inventory.InventoryItemService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+import java.math.BigDecimal;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.List;
+
+@Service
+@RequiredArgsConstructor
+@Transactional
+public class CreditNoteService {
+
+    private final CreditNoteRepository creditNoteRepository;
+    private final CreditNoteItemRepository creditNoteItemRepository;
+    private final InvoiceRepository invoiceRepository;
+    private final InvoiceItemRepository invoiceItemRepository;
+    private final InventoryItemRepository inventoryItemRepository;
+    private final InventoryItemService inventoryItemService;
+    private final LedgerService ledgerService;
+    private final CustomerRepository customerRepository;
+    private final TransactionService transactionService;
+
+    public Flux<CreditNote> getCreditNotes(Long userId) {
+        return creditNoteRepository.findByUserId(userId)
+                .flatMap(this::populateItems);
+    }
+
+    public Flux<CreditNote> getCreditNotesForInvoice(Long invoiceId, Long userId) {
+        return creditNoteRepository.findByUserIdAndInvoiceId(userId, invoiceId)
+                .flatMap(this::populateItems);
+    }
+
+    public Mono<CreditNote> getCreditNoteById(Long id, Long userId) {
+        return creditNoteRepository.findById(id)
+                .filter(cn -> cn.getUserId().equals(userId))
+                .switchIfEmpty(Mono.error(new RuntimeException("Credit note not found or unauthorized")))
+                .flatMap(this::populateItems);
+    }
+
+    private Mono<CreditNote> populateItems(CreditNote cn) {
+        return creditNoteItemRepository.findByCreditNoteId(cn.getId())
+                .collectList()
+                .map(items -> {
+                    cn.setItems(items);
+                    return cn;
+                });
+    }
+
+    public Mono<CreditNote> createCreditNote(Long userId, Long invoiceId, CreditNote creditNote) {
+        return invoiceRepository.findById(invoiceId)
+                .filter(inv -> inv.getUserId().equals(userId))
+                .switchIfEmpty(Mono.error(new RuntimeException("Invoice not found or unauthorized")))
+                .flatMap(invoice -> {
+                    creditNote.setUserId(userId);
+                    creditNote.setInvoiceId(invoiceId);
+                    creditNote.setCustomerId(invoice.getCustomerId());
+
+                    if (creditNote.getReturnDate() == null) {
+                        creditNote.setReturnDate(LocalDate.now());
+                    }
+                    if (creditNote.getCreditNoteNumber() == null || creditNote.getCreditNoteNumber().trim().isEmpty()) {
+                        creditNote.setCreditNoteNumber("CN-" + System.currentTimeMillis() % 1000000);
+                    }
+                    creditNote.setCreatedAt(LocalDateTime.now());
+                    creditNote.setUpdatedAt(LocalDateTime.now());
+
+                    if (creditNote.getRefundStatus() == null || creditNote.getRefundStatus().trim().isEmpty()) {
+                        creditNote.setRefundStatus("ADJUSTED_TO_AR");
+                    }
+
+                    // Calculate totals from items if not provided
+                    List<CreditNoteItem> items = creditNote.getItems() != null ? creditNote.getItems() : new ArrayList<>();
+                    BigDecimal subtotal = BigDecimal.ZERO;
+                    BigDecimal taxTotal = BigDecimal.ZERO;
+                    BigDecimal cgstTotal = BigDecimal.ZERO;
+                    BigDecimal sgstTotal = BigDecimal.ZERO;
+                    BigDecimal igstTotal = BigDecimal.ZERO;
+                    BigDecimal totalAmount = BigDecimal.ZERO;
+
+                    for (CreditNoteItem itm : items) {
+                        BigDecimal qty = itm.getWeight() != null && itm.getWeight().compareTo(BigDecimal.ZERO) > 0
+                                ? itm.getWeight()
+                                : (itm.getQuantity() != null ? itm.getQuantity() : BigDecimal.ONE);
+                        BigDecimal unitPrice = itm.getUnitPrice() != null ? itm.getUnitPrice() : BigDecimal.ZERO;
+                        BigDecimal baseAmt = qty.multiply(unitPrice);
+                        BigDecimal making = itm.getMakingCharge() != null ? itm.getMakingCharge() : BigDecimal.ZERO;
+                        BigDecimal disc = itm.getDiscount() != null ? itm.getDiscount() : BigDecimal.ZERO;
+                        BigDecimal other = itm.getOtherCharges() != null ? itm.getOtherCharges() : BigDecimal.ZERO;
+
+                        BigDecimal cgst = itm.getCgst() != null ? itm.getCgst() : BigDecimal.ZERO;
+                        BigDecimal sgst = itm.getSgst() != null ? itm.getSgst() : BigDecimal.ZERO;
+                        BigDecimal igst = itm.getIgst() != null ? itm.getIgst() : BigDecimal.ZERO;
+                        BigDecimal tax = cgst.add(sgst).add(igst);
+
+                        BigDecimal lineTotal = baseAmt.add(making).add(other).subtract(disc).add(tax);
+                        itm.setTotal(lineTotal);
+
+                        subtotal = subtotal.add(baseAmt);
+                        taxTotal = taxTotal.add(tax);
+                        cgstTotal = cgstTotal.add(cgst);
+                        sgstTotal = sgstTotal.add(sgst);
+                        igstTotal = igstTotal.add(igst);
+                        totalAmount = totalAmount.add(lineTotal);
+                    }
+
+                    if (creditNote.getSubtotal() == null) creditNote.setSubtotal(subtotal);
+                    if (creditNote.getTaxTotal() == null) creditNote.setTaxTotal(taxTotal);
+                    if (creditNote.getCgstTotal() == null) creditNote.setCgstTotal(cgstTotal);
+                    if (creditNote.getSgstTotal() == null) creditNote.setSgstTotal(sgstTotal);
+                    if (creditNote.getIgstTotal() == null) creditNote.setIgstTotal(igstTotal);
+                    if (creditNote.getTotalAmount() == null) creditNote.setTotalAmount(totalAmount);
+
+                    return creditNoteRepository.save(creditNote)
+                            .flatMap(savedCn -> {
+                                Mono<List<CreditNoteItem>> itemsMono = Flux.fromIterable(items)
+                                        .flatMap(item -> {
+                                            item.setCreditNoteId(savedCn.getId());
+                                            return creditNoteItemRepository.save(item);
+                                        })
+                                        .collectList();
+
+                                return itemsMono.flatMap(savedItems -> {
+                                    savedCn.setItems(savedItems);
+
+                                    // 1. Stock Restoration (if restockItems is true)
+                                    Mono<Void> restockMono = Mono.empty();
+                                    if (Boolean.TRUE.equals(savedCn.getRestockItems())) {
+                                        restockMono = Flux.fromIterable(savedItems)
+                                                .flatMap(item -> {
+                                                    // Inward restock back into inventory
+                                                    if (item.getInventoryItemId() != null) {
+                                                        return inventoryItemRepository.findById(item.getInventoryItemId())
+                                                                .flatMap(invItem -> {
+                                                                    invItem.setStatus("AVAILABLE");
+                                                                    invItem.setSalesRef(null);
+                                                                    invItem.setUpdatedAt(LocalDateTime.now());
+                                                                    return inventoryItemRepository.save(invItem).then();
+                                                                });
+                                                    } else if (item.getProductId() != null) {
+                                                        BigDecimal restockQty = item.getWeight() != null && item.getWeight().compareTo(BigDecimal.ZERO) > 0
+                                                                ? item.getWeight()
+                                                                : (item.getQuantity() != null ? item.getQuantity() : BigDecimal.ONE);
+                                                        InventoryItem restockRecord = InventoryItem.builder()
+                                                                .userId(userId)
+                                                                .productId(item.getProductId())
+                                                                .sku(item.getSku())
+                                                                .huid(item.getHuid())
+                                                                .grossWeight(restockQty)
+                                                                .netWeight(restockQty)
+                                                                .purchaseCost(item.getUnitPrice())
+                                                                .purchaseRef("RETURN-" + savedCn.getCreditNoteNumber())
+                                                                .status("AVAILABLE")
+                                                                .createdAt(LocalDateTime.now())
+                                                                .updatedAt(LocalDateTime.now())
+                                                                .build();
+                                                        return inventoryItemRepository.save(restockRecord).then();
+                                                    }
+                                                    return Mono.empty();
+                                                })
+                                                .then();
+                                    }
+
+                                    // 2. Financial / Ledger Accounting Adjustment
+                                    Mono<Void> accountingMono = Mono.empty();
+                                    if ("REFUNDED_TO_WALLET".equalsIgnoreCase(savedCn.getRefundStatus()) && savedCn.getRefundWalletId() != null) {
+                                        Transaction refundTx = Transaction.builder()
+                                                .userId(userId)
+                                                .fromWalletId(savedCn.getRefundWalletId()) // Cash/Bank decreases
+                                                .type("EXPENSE")
+                                                .amount(savedCn.getTotalAmount())
+                                                .date(savedCn.getReturnDate())
+                                                .description("Refund for Return #" + savedCn.getCreditNoteNumber() + " (Invoice #" + invoice.getInvoiceNumber() + ")")
+                                                .createdAt(LocalDateTime.now())
+                                                .build();
+                                        accountingMono = transactionService.addTransaction(userId, refundTx).then();
+                                    } else {
+                                        // Customer AR adjustment
+                                        if (invoice.getCustomerId() != null) {
+                                            accountingMono = customerRepository.findById(invoice.getCustomerId())
+                                                    .flatMap(customer -> Mono.zip(
+                                                            ledgerService.getCustomerLedger(userId, customer.getId(), customer.getName()),
+                                                            ledgerService.getSalesRevenueLedger(userId)
+                                                    ).flatMap(ledgers -> {
+                                                        Transaction returnTx = Transaction.builder()
+                                                                .userId(userId)
+                                                                .fromWalletId(ledgers.getT1().getId()) // Customer AR (Asset decreases)
+                                                                .toWalletId(ledgers.getT2().getId()) // Sales Revenue (Income decreases)
+                                                                .type("SALES_RETURN")
+                                                                .amount(savedCn.getTotalAmount())
+                                                                .date(savedCn.getReturnDate())
+                                                                .description("Credit Note #" + savedCn.getCreditNoteNumber() + " for Invoice #" + invoice.getInvoiceNumber())
+                                                                .createdAt(LocalDateTime.now())
+                                                                .build();
+                                                        return transactionService.addTransaction(userId, returnTx).then();
+                                                    })).onErrorResume(err -> {
+                                                        System.err.println("AR adjustment error: " + err.getMessage());
+                                                        return Mono.empty();
+                                                    });
+                                        }
+                                    }
+
+                                    // 3. Update Invoice Status
+                                    invoice.setStatus(savedCn.getTotalAmount().compareTo(invoice.getTotalAmount()) >= 0 ? "RETURNED" : "PARTIALLY_RETURNED");
+                                    if ("RTO_UNDELIVERED".equalsIgnoreCase(savedCn.getReason())) {
+                                        invoice.setDispatchStatus("RTO");
+                                    }
+                                    invoice.setUpdatedAt(LocalDateTime.now());
+                                    Mono<Invoice> updateInvoiceMono = invoiceRepository.save(invoice);
+
+                                    return restockMono
+                                            .then(accountingMono)
+                                            .then(updateInvoiceMono)
+                                            .thenReturn(savedCn);
+                                });
+                            });
+                });
+    }
+}

kifi-api/src/main/java/com/kifi/api/service/invoice/MarketplaceSettlementService.java

@@ -0,0 +1,128 @@
+package com.kifi.api.service.invoice;
+
+import com.kifi.api.entity.Transaction;
+import com.kifi.api.entity.invoice.Invoice;
+import com.kifi.api.entity.invoice.InvoicePayment;
+import com.kifi.api.entity.invoice.MarketplaceSettlement;
+import com.kifi.api.repository.customer.CustomerRepository;
+import com.kifi.api.repository.invoice.InvoicePaymentRepository;
+import com.kifi.api.repository.invoice.InvoiceRepository;
+import com.kifi.api.repository.invoice.MarketplaceSettlementRepository;
+import com.kifi.api.service.TransactionService;
+import com.kifi.api.service.accounting.LedgerService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+import java.math.BigDecimal;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+
+@Service
+@RequiredArgsConstructor
+@Transactional
+public class MarketplaceSettlementService {
+
+    private final MarketplaceSettlementRepository settlementRepository;
+    private final InvoiceRepository invoiceRepository;
+    private final InvoicePaymentRepository invoicePaymentRepository;
+    private final CustomerRepository customerRepository;
+    private final LedgerService ledgerService;
+    private final TransactionService transactionService;
+
+    public Flux<MarketplaceSettlement> getSettlements(Long userId) {
+        return settlementRepository.findByUserId(userId);
+    }
+
+    public Flux<MarketplaceSettlement> getSettlementsForInvoice(Long invoiceId, Long userId) {
+        return settlementRepository.findByUserIdAndInvoiceId(userId, invoiceId);
+    }
+
+    public Mono<MarketplaceSettlement> getSettlementById(Long id, Long userId) {
+        return settlementRepository.findById(id)
+                .filter(s -> s.getUserId().equals(userId))
+                .switchIfEmpty(Mono.error(new RuntimeException("Settlement not found or unauthorized")));
+    }
+
+    public Mono<MarketplaceSettlement> createSettlement(Long userId, Long invoiceId, MarketplaceSettlement settlement) {
+        return invoiceRepository.findById(invoiceId)
+                .filter(inv -> inv.getUserId().equals(userId))
+                .switchIfEmpty(Mono.error(new RuntimeException("Invoice not found or unauthorized")))
+                .flatMap(invoice -> {
+                    settlement.setUserId(userId);
+                    settlement.setInvoiceId(invoiceId);
+                    if (settlement.getSalesChannelId() == null) {
+                        settlement.setSalesChannelId(invoice.getSalesChannelId());
+                    }
+                    if (settlement.getChannelName() == null || settlement.getChannelName().trim().isEmpty()) {
+                        settlement.setChannelName(invoice.getSalesChannel() != null ? invoice.getSalesChannel() : "Marketplace");
+                    }
+                    if (settlement.getSettlementDate() == null) {
+                        settlement.setSettlementDate(LocalDate.now());
+                    }
+                    if (settlement.getGrossAmount() == null) {
+                        settlement.setGrossAmount(invoice.getTotalAmount());
+                    }
+                    if (settlement.getCommissionFee() == null) settlement.setCommissionFee(BigDecimal.ZERO);
+                    if (settlement.getShippingFee() == null) settlement.setShippingFee(BigDecimal.ZERO);
+                    if (settlement.getOtherFees() == null) settlement.setOtherFees(BigDecimal.ZERO);
+                    if (settlement.getFeeGst() == null) settlement.setFeeGst(BigDecimal.ZERO);
+                    if (settlement.getTcsGstAmount() == null) settlement.setTcsGstAmount(BigDecimal.ZERO);
+                    if (settlement.getTdsAmount() == null) settlement.setTdsAmount(BigDecimal.ZERO);
+
+                    BigDecimal totalDeductions = settlement.getCommissionFee()
+                            .add(settlement.getShippingFee())
+                            .add(settlement.getOtherFees())
+                            .add(settlement.getFeeGst())
+                            .add(settlement.getTcsGstAmount())
+                            .add(settlement.getTdsAmount());
+                    settlement.setTotalDeductions(totalDeductions);
+
+                    BigDecimal netPayout = settlement.getGrossAmount().subtract(totalDeductions);
+                    settlement.setNetPayoutAmount(netPayout);
+
+                    settlement.setStatus("SETTLED");
+                    settlement.setCreatedAt(LocalDateTime.now());
+                    settlement.setUpdatedAt(LocalDateTime.now());
+
+                    return settlementRepository.save(settlement)
+                            .flatMap(savedSettlement -> {
+                                // 1. Record Bank Inflow Transaction
+                                Mono<Void> txMono = Mono.empty();
+                                if (savedSettlement.getPayoutWalletId() != null && netPayout.compareTo(BigDecimal.ZERO) > 0) {
+                                    Transaction netDepositTx = Transaction.builder()
+                                            .userId(userId)
+                                            .toWalletId(savedSettlement.getPayoutWalletId()) // Cash/Bank increases
+                                            .type("INCOME")
+                                            .amount(netPayout)
+                                            .date(savedSettlement.getSettlementDate())
+                                            .description("Payout for " + savedSettlement.getChannelName() + " Order #" + (invoice.getMarketplaceOrderId() != null ? invoice.getMarketplaceOrderId() : invoice.getInvoiceNumber()) + " (Ref: " + (savedSettlement.getSettlementRef() != null ? savedSettlement.getSettlementRef() : "Settlement") + ")")
+                                            .createdAt(LocalDateTime.now())
+                                            .build();
+                                    txMono = transactionService.addTransaction(userId, netDepositTx).then();
+                                }
+
+                                // 2. Record Invoice Payment (Clears Invoice Receivables)
+                                InvoicePayment payment = InvoicePayment.builder()
+                                        .invoiceId(invoiceId)
+                                        .amount(invoice.getTotalAmount())
+                                        .paymentDate(savedSettlement.getSettlementDate())
+                                        .createdAt(LocalDateTime.now())
+                                        .build();
+                                Mono<InvoicePayment> paymentMono = invoicePaymentRepository.save(payment);
+
+                                // 3. Mark Invoice as PAID / SETTLED
+                                invoice.setStatus("PAID");
+                                invoice.setUpdatedAt(LocalDateTime.now());
+                                Mono<Invoice> updateInvoiceMono = invoiceRepository.save(invoice);
+
+                                return txMono
+                                        .then(paymentMono)
+                                        .then(updateInvoiceMono)
+                                        .thenReturn(savedSettlement);
+                            });
+                });
+    }
+}

kifi-api/src/main/resources/schema.sql

@@ -272,6 +272,7 @@ CREATE TABLE IF NOT EXISTS products (
     wastage_percentage DECIMAL(5, 2) DEFAULT 0.0,
     min_stock DECIMAL(10, 2) DEFAULT 0,
     reorder_level DECIMAL(10, 2) DEFAULT 0,
+    reorder_quantity DECIMAL(10, 2) DEFAULT 0,
     track_inventory BOOLEAN DEFAULT TRUE,
     is_active BOOLEAN DEFAULT TRUE,
     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
@@ -495,6 +496,76 @@ CREATE TABLE IF NOT EXISTS invoice_payments (
     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
 );
 
+CREATE TABLE IF NOT EXISTS credit_notes (
+    id SERIAL PRIMARY KEY,
+    user_id INTEGER REFERENCES users(id) ON DELETE CASCADE,
+    invoice_id INTEGER REFERENCES invoices(id) ON DELETE CASCADE,
+    credit_note_number VARCHAR(100) NOT NULL,
+    customer_id INTEGER REFERENCES customers(id) ON DELETE SET NULL,
+    return_date DATE NOT NULL,
+    reason VARCHAR(100) NOT NULL,
+    restock_items BOOLEAN DEFAULT TRUE,
+    subtotal DECIMAL(15, 2) NOT NULL,
+    tax_total DECIMAL(15, 2) DEFAULT 0.0,
+    cgst_total DECIMAL(15, 2) DEFAULT 0.0,
+    sgst_total DECIMAL(15, 2) DEFAULT 0.0,
+    igst_total DECIMAL(15, 2) DEFAULT 0.0,
+    discount_total DECIMAL(15, 2) DEFAULT 0.0,
+    total_amount DECIMAL(15, 2) NOT NULL,
+    refund_status VARCHAR(50) DEFAULT 'ADJUSTED_TO_AR',
+    refund_wallet_id INTEGER REFERENCES wallets(id) ON DELETE SET NULL,
+    notes TEXT,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TABLE IF NOT EXISTS credit_note_items (
+    id SERIAL PRIMARY KEY,
+    credit_note_id INTEGER REFERENCES credit_notes(id) ON DELETE CASCADE,
+    invoice_item_id INTEGER REFERENCES invoice_items(id) ON DELETE SET NULL,
+    product_id INTEGER REFERENCES products(id) ON DELETE SET NULL,
+    inventory_item_id INTEGER REFERENCES inventory_items(id) ON DELETE SET NULL,
+    product_name VARCHAR(255),
+    sku VARCHAR(100),
+    huid VARCHAR(50),
+    hsn_code VARCHAR(50),
+    quantity DECIMAL(10, 3) NOT NULL,
+    weight DECIMAL(10, 3),
+    unit_price DECIMAL(15, 2) NOT NULL,
+    tax_rate DECIMAL(5, 2) DEFAULT 0.0,
+    cgst DECIMAL(15, 2) DEFAULT 0.0,
+    sgst DECIMAL(15, 2) DEFAULT 0.0,
+    igst DECIMAL(15, 2) DEFAULT 0.0,
+    discount DECIMAL(15, 2) DEFAULT 0.0,
+    making_charge DECIMAL(15, 2) DEFAULT 0.0,
+    other_charges DECIMAL(15, 2) DEFAULT 0.0,
+    total DECIMAL(15, 2) NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS marketplace_settlements (
+    id SERIAL PRIMARY KEY,
+    user_id INTEGER REFERENCES users(id) ON DELETE CASCADE,
+    invoice_id INTEGER REFERENCES invoices(id) ON DELETE CASCADE,
+    sales_channel_id INTEGER REFERENCES sales_channels(id) ON DELETE SET NULL,
+    channel_name VARCHAR(100),
+    settlement_ref VARCHAR(100),
+    settlement_date DATE NOT NULL,
+    gross_amount DECIMAL(15, 2) NOT NULL,
+    commission_fee DECIMAL(15, 2) DEFAULT 0.0,
+    shipping_fee DECIMAL(15, 2) DEFAULT 0.0,
+    other_fees DECIMAL(15, 2) DEFAULT 0.0,
+    fee_gst DECIMAL(15, 2) DEFAULT 0.0,
+    tcs_gst_amount DECIMAL(15, 2) DEFAULT 0.0,
+    tds_amount DECIMAL(15, 2) DEFAULT 0.0,
+    total_deductions DECIMAL(15, 2) NOT NULL,
+    net_payout_amount DECIMAL(15, 2) NOT NULL,
+    payout_wallet_id INTEGER REFERENCES wallets(id) ON DELETE SET NULL,
+    status VARCHAR(50) DEFAULT 'SETTLED',
+    notes TEXT,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
 -- 9. Projects & Task Management
 CREATE TABLE IF NOT EXISTS projects (
     id SERIAL PRIMARY KEY,

kifi-app/lib/features/inventory/domain/product.dart

@@ -40,6 +40,12 @@ class Product {
   final double? makingCharges;
   final String? makingChargesType;
   final double? wastagePercentage;
+
+  final double? minStock;
+  final double? reorderLevel;
+  final double? reorderQuantity;
+  final bool trackInventory;
+
   final bool isActive;
   final List<int> imageIds;
   final double? currentStock;
@@ -80,24 +86,37 @@ class Product {
     this.makingCharges = 0.0,
     this.makingChargesType = 'FLAT',
     this.wastagePercentage = 0.0,
+    this.minStock = 0.0,
+    this.reorderLevel = 0.0,
+    this.reorderQuantity = 0.0,
+    this.trackInventory = true,
     this.isActive = true,
     this.imageIds = const [],
     this.currentStock = 0.0,
   });
 
+  bool get isOutOfStock => trackInventory && (currentStock == null || currentStock! <= 0);
+
+  bool get isLowStock {
+    final alertThreshold = (reorderLevel != null && reorderLevel! > 0)
+        ? reorderLevel!
+        : (minStock != null && minStock! > 0 ? minStock! : 0.0);
+    if (!trackInventory || alertThreshold <= 0) return false;
+    return currentStock != null && currentStock! > 0 && currentStock! <= alertThreshold;
+  }
+
   factory Product.fromJson(Map<String, dynamic> json) {
     return Product(
       id: json['id'],
       userId: json['userId'] ?? json['user_id'],
       categoryId: json['categoryId'] ?? json['category_id'],
       uomId: json['uomId'] ?? json['uom_id'],
-      name: json['name'],
+      name: json['name'] ?? '',
       hsnCode: json['hsnCode'] ?? json['hsn_code'],
       sku: json['sku'],
       barcode: json['barcode'],
       description: json['description'],
-      sellingPrice: (json['sellingPrice'] ?? json['selling_price'] as num?)
-          ?.toDouble(),
+      sellingPrice: (json['sellingPrice'] ?? json['selling_price'] as num?)?.toDouble(),
       gstRate: (json['gstRate'] ?? json['gst_rate'] as num?)?.toDouble(),
       dimensions: json['dimensions'],
       color: json['color'],
@@ -117,22 +136,16 @@ class Product {
       weightInG: (json['weightInG'] ?? json['weight_in_g'] as num?)?.toDouble(),
       packageWeightInG: (json['packageWeightInG'] ?? json['package_weight_in_g'] as num?)?.toDouble(),
       volumetricWeightInKg: (json['volumetricWeightInKg'] ?? json['volumetric_weight_in_kg'] as num?)?.toDouble(),
-      priceCalcRule:
-          json['priceCalcRule'] ?? json['price_calc_rule'] ?? 'MANUAL',
-      autoCalculatePrice:
-          json['autoCalculatePrice'] ?? json['auto_calculate_price'] ?? false,
-      purityFactor:
-          (json['purityFactor'] ?? json['purity_factor'] as num?)?.toDouble(),
-      makingCharges:
-          (json['makingCharges'] ?? json['making_charges'] as num?)
-              ?.toDouble() ??
-          0.0,
-      makingChargesType:
-          json['makingChargesType'] ?? json['making_charges_type'] ?? 'FLAT',
-      wastagePercentage:
-          (json['wastagePercentage'] ?? json['wastage_percentage'] as num?)
-              ?.toDouble() ??
-          0.0,
+      priceCalcRule: json['priceCalcRule'] ?? json['price_calc_rule'] ?? 'MANUAL',
+      autoCalculatePrice: json['autoCalculatePrice'] ?? json['auto_calculate_price'] ?? false,
+      purityFactor: (json['purityFactor'] ?? json['purity_factor'] as num?)?.toDouble(),
+      makingCharges: (json['makingCharges'] ?? json['making_charges'] as num?)?.toDouble() ?? 0.0,
+      makingChargesType: json['makingChargesType'] ?? json['making_charges_type'] ?? 'FLAT',
+      wastagePercentage: (json['wastagePercentage'] ?? json['wastage_percentage'] as num?)?.toDouble() ?? 0.0,
+      minStock: (json['minStock'] ?? json['min_stock'] as num?)?.toDouble() ?? 0.0,
+      reorderLevel: (json['reorderLevel'] ?? json['reorder_level'] as num?)?.toDouble() ?? 0.0,
+      reorderQuantity: (json['reorderQuantity'] ?? json['reorder_quantity'] as num?)?.toDouble() ?? 0.0,
+      trackInventory: json['trackInventory'] ?? json['track_inventory'] ?? true,
       isActive: json['isActive'] ?? json['is_active'] ?? true,
       imageIds: json['images'] != null
           ? (json['images'] as List).map((i) {
@@ -144,9 +157,7 @@ class Product {
               return 0;
             }).where((id) => id > 0).toList()
           : [],
-      currentStock:
-          (json['currentStock'] ?? json['current_stock'] as num?)?.toDouble() ??
-          0.0,
+      currentStock: (json['currentStock'] ?? json['current_stock'] as num?)?.toDouble() ?? 0.0,
     );
   }
 
@@ -187,6 +198,10 @@ class Product {
       'makingCharges': makingCharges,
       'makingChargesType': makingChargesType,
       'wastagePercentage': wastagePercentage,
+      'minStock': minStock,
+      'reorderLevel': reorderLevel,
+      'reorderQuantity': reorderQuantity,
+      'trackInventory': trackInventory,
       'isActive': isActive,
     };
   }

kifi-app/lib/features/inventory/presentation/add_product_screen.dart

@@ -58,6 +58,11 @@ class _AddProductScreenState extends ConsumerState<AddProductScreen> {
   final _packageWeightInGController = TextEditingController();
   double? _volumetricWeightInKg;
 
+  // Inventory & Reorder Thresholds
+  final _minStockController = TextEditingController();
+  final _reorderQuantityController = TextEditingController();
+  bool _trackInventory = true;
+
   // Media
   final List<XFile> _images = [];
   final List<int> _existingImageIds = [];
@@ -102,6 +107,11 @@ class _AddProductScreenState extends ConsumerState<AddProductScreen> {
       if (_volumetricWeightInKg == null) {
         _calculateVolumetricWeight();
       }
+
+      final alertQty = (p.reorderLevel != null && p.reorderLevel! > 0) ? p.reorderLevel : p.minStock;
+      _minStockController.text = alertQty != null && alertQty > 0 ? alertQty.toString() : '';
+      _reorderQuantityController.text = p.reorderQuantity != null && p.reorderQuantity! > 0 ? p.reorderQuantity.toString() : '';
+      _trackInventory = p.trackInventory;
       
       if (p.imageIds.isNotEmpty) {
         _existingImageIds.addAll(p.imageIds);
@@ -262,6 +272,10 @@ class _AddProductScreenState extends ConsumerState<AddProductScreen> {
         weightInG: double.tryParse(_weightInGController.text),
         packageWeightInG: double.tryParse(_packageWeightInGController.text),
         volumetricWeightInKg: _volumetricWeightInKg,
+        minStock: double.tryParse(_minStockController.text) ?? 0.0,
+        reorderLevel: double.tryParse(_minStockController.text) ?? 0.0,
+        reorderQuantity: double.tryParse(_reorderQuantityController.text) ?? 0.0,
+        trackInventory: _trackInventory,
       );
       
       if (widget.product != null) {
@@ -732,6 +746,71 @@ class _AddProductScreenState extends ConsumerState<AddProductScreen> {
                           ),
                         ],
 
+                        const SizedBox(height: 24),
+                        // Inventory & Reorder Point Alert Thresholds
+                        Row(
+                          children: [
+                            Container(
+                              padding: const EdgeInsets.all(6),
+                              decoration: BoxDecoration(
+                                color: Colors.orange.withValues(alpha: 0.12),
+                                borderRadius: BorderRadius.circular(8),
+                              ),
+                              child: const Icon(LucideIcons.bellRing, color: Colors.orange, size: 20),
+                            ),
+                            const SizedBox(width: 10),
+                            const Text('Inventory & Reorder Alerts', style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold)),
+                          ],
+                        ),
+                        const SizedBox(height: 12),
+                        Container(
+                          padding: const EdgeInsets.all(16),
+                          decoration: BoxDecoration(
+                            color: Theme.of(context).cardColor,
+                            borderRadius: BorderRadius.circular(16),
+                            border: Border.all(color: Colors.grey.withValues(alpha: 0.2)),
+                          ),
+                          child: Column(
+                            crossAxisAlignment: CrossAxisAlignment.start,
+                            children: [
+                              SwitchListTile(
+                                contentPadding: EdgeInsets.zero,
+                                activeColor: Theme.of(context).colorScheme.primary,
+                                title: const Text('Track Inventory & Stock Alerts', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 14)),
+                                subtitle: const Text('Notify when product stock drops below critical threshold', style: TextStyle(fontSize: 12)),
+                                value: _trackInventory,
+                                onChanged: (val) => setState(() => _trackInventory = val),
+                              ),
+                              if (_trackInventory) ...[
+                                const Divider(height: 20),
+                                Row(
+                                  children: [
+                                    Expanded(
+                                      child: _buildPremiumTextField(
+                                        label: 'Reorder Alert Level / Min Stock',
+                                        controller: _minStockController,
+                                        keyboardType: const TextInputType.numberWithOptions(decimal: true),
+                                        prefixIcon: LucideIcons.alertTriangle,
+                                        helperText: 'Alert when stock falls below this qty / weight',
+                                      ),
+                                    ),
+                                    const SizedBox(width: 16),
+                                    Expanded(
+                                      child: _buildPremiumTextField(
+                                        label: 'Standard Reorder Batch Qty',
+                                        controller: _reorderQuantityController,
+                                        keyboardType: const TextInputType.numberWithOptions(decimal: true),
+                                        prefixIcon: LucideIcons.shoppingBag,
+                                        helperText: 'Suggested replenishment batch size',
+                                      ),
+                                    ),
+                                  ],
+                                ),
+                              ],
+                            ],
+                          ),
+                        ),
+
                         const SizedBox(height: 24),
                         const Text('Product Images', style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold)),
                         const SizedBox(height: 16),
@@ -905,20 +984,26 @@ class _AddProductScreenState extends ConsumerState<AddProductScreen> {
 
   Widget _buildPremiumTextField({
     required String label,
+    TextEditingController? controller,
     String? initialValue,
     String? prefixText,
     String? suffixText,
+    IconData? prefixIcon,
+    String? helperText,
     TextInputType? keyboardType,
     void Function(String)? onChanged,
     void Function(String?)? onSaved,
     String? Function(String?)? validator,
   }) {
     return TextFormField(
-      initialValue: initialValue,
+      controller: controller,
+      initialValue: controller == null ? initialValue : null,
       decoration: InputDecoration(
         labelText: label,
         prefixText: prefixText,
         suffixText: suffixText,
+        prefixIcon: prefixIcon != null ? Icon(prefixIcon) : null,
+        helperText: helperText,
       ),
       keyboardType: keyboardType,
       onChanged: onChanged,

kifi-app/lib/features/inventory/presentation/product_detail_screen.dart

@@ -165,6 +165,81 @@ class ProductDetailScreen extends ConsumerWidget {
                 ),
               ),
             ),
+            const SizedBox(height: 16),
+
+            // Inventory & Reorder Alerts Card
+            Card(
+              elevation: 0,
+              shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
+              child: Padding(
+                padding: const EdgeInsets.all(16.0),
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Row(
+                      mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                      children: [
+                        Row(
+                          children: [
+                            Icon(LucideIcons.bellRing, size: 20, color: Colors.orange.shade700),
+                            const SizedBox(width: 8),
+                            const Text(
+                              "Inventory & Reorder Status",
+                              style: TextStyle(fontWeight: FontWeight.bold, fontSize: 16),
+                            ),
+                          ],
+                        ),
+                        if (!p.trackInventory)
+                          Container(
+                            padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 3),
+                            decoration: BoxDecoration(color: Colors.grey.withValues(alpha: 0.12), borderRadius: BorderRadius.circular(6)),
+                            child: const Text('Untracked', style: TextStyle(fontSize: 11, color: Colors.grey, fontWeight: FontWeight.bold)),
+                          )
+                        else if (p.isOutOfStock)
+                          Container(
+                            padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 3),
+                            decoration: BoxDecoration(color: Colors.red.withValues(alpha: 0.12), borderRadius: BorderRadius.circular(6)),
+                            child: const Text('Out of Stock', style: TextStyle(fontSize: 11, color: Colors.red, fontWeight: FontWeight.bold)),
+                          )
+                        else if (p.isLowStock)
+                          Container(
+                            padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 3),
+                            decoration: BoxDecoration(color: Colors.orange.withValues(alpha: 0.15), borderRadius: BorderRadius.circular(6)),
+                            child: const Text('Low Stock Alert', style: TextStyle(fontSize: 11, color: Colors.orange, fontWeight: FontWeight.bold)),
+                          )
+                        else
+                          Container(
+                            padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 3),
+                            decoration: BoxDecoration(color: const Color(0xFF10B981).withValues(alpha: 0.12), borderRadius: BorderRadius.circular(6)),
+                            child: const Text('Healthy Stock', style: TextStyle(fontSize: 11, color: Color(0xFF10B981), fontWeight: FontWeight.bold)),
+                          ),
+                      ],
+                    ),
+                    const Divider(),
+                    _buildDetailRow(
+                      "Current Available Stock",
+                      "${p.currentStock != null ? (p.currentStock! % 1 == 0 ? p.currentStock!.toInt() : p.currentStock) : '0'} ${uom?.abbreviation ?? 'pcs'}",
+                    ),
+                    _buildDetailRow(
+                      "Reorder Alert Level / Min Stock",
+                      ((p.reorderLevel != null && p.reorderLevel! > 0) ? p.reorderLevel : p.minStock) != null && ((p.reorderLevel != null && p.reorderLevel! > 0) ? p.reorderLevel : p.minStock)! > 0
+                          ? "${((p.reorderLevel != null && p.reorderLevel! > 0) ? p.reorderLevel : p.minStock)} ${uom?.abbreviation ?? 'pcs'}"
+                          : "Not configured",
+                    ),
+                    _buildDetailRow(
+                      "Standard Reorder Batch Qty",
+                      p.reorderQuantity != null && p.reorderQuantity! > 0
+                          ? "${p.reorderQuantity} ${uom?.abbreviation ?? 'pcs'}"
+                          : "Not configured",
+                    ),
+                    _buildDetailRow(
+                      "Inventory Tracking",
+                      p.trackInventory ? "Active" : "Disabled",
+                    ),
+                  ],
+                ),
+              ),
+            ),
 
             // Non-jewellery Specific Sections
             if (!isJewellery) ...[

kifi-app/lib/features/inventory/presentation/product_list_screen.dart

@@ -22,6 +22,7 @@ class _ProductListScreenState extends ConsumerState<ProductListScreen> {
   final ScrollController _scrollController = ScrollController();
   Timer? _debounce;
   String? _token;
+  String _stockFilter = 'ALL'; // 'ALL', 'LOW_STOCK', 'OUT_OF_STOCK'
 
   @override
   void initState() {
@@ -55,66 +56,135 @@ class _ProductListScreenState extends ConsumerState<ProductListScreen> {
     final productsState = ref.watch(productsProvider);
     final categoriesState = ref.watch(productCategoriesProvider);
 
+    final isDark = Theme.of(context).brightness == Brightness.dark;
+
     return Scaffold(
-      backgroundColor: Colors.grey[100],
+      backgroundColor: isDark ? const Color(0xFF0F172A) : const Color(0xFFF8FAFC),
       appBar: AppBar(
         title: const Text(
           'Products Catalog',
           style: TextStyle(fontWeight: FontWeight.bold),
         ),
         elevation: 0,
-        backgroundColor: Colors.white,
-        foregroundColor: Colors.black,
+        backgroundColor: isDark ? const Color(0xFF1E293B) : Colors.white,
+        foregroundColor: isDark ? Colors.white : Colors.black,
         centerTitle: true,
       ),
-      body: MaxContentWidth(
-        maxWidth: 1000,
-        child: Column(
+      body: Column(
         children: [
           Container(
-            color: Colors.white,
-            padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
-            child: TextField(
-              controller: _searchController,
-              decoration: InputDecoration(
-                hintText: 'Search products by name or SKU...',
-                prefixIcon: const Icon(LucideIcons.search, color: Colors.grey),
-                contentPadding: const EdgeInsets.symmetric(vertical: 14),
-              ),
-              onChanged: (val) {
-                if (_debounce?.isActive ?? false) _debounce!.cancel();
-                _debounce = Timer(const Duration(milliseconds: 500), () {
-                  ref.read(productsProvider.notifier).search(val);
-                });
-              },
+            color: isDark ? const Color(0xFF1E293B) : Colors.white,
+            padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 10),
+            child: Column(
+              children: [
+                TextField(
+                  controller: _searchController,
+                  decoration: InputDecoration(
+                    hintText: 'Search products by name or SKU...',
+                    prefixIcon: const Icon(LucideIcons.search, color: Colors.grey),
+                    contentPadding: const EdgeInsets.symmetric(vertical: 12),
+                    border: OutlineInputBorder(
+                      borderRadius: BorderRadius.circular(12),
+                      borderSide: BorderSide(color: isDark ? Colors.white12 : Colors.grey.shade300),
+                    ),
+                    enabledBorder: OutlineInputBorder(
+                      borderRadius: BorderRadius.circular(12),
+                      borderSide: BorderSide(color: isDark ? Colors.white12 : Colors.grey.shade300),
+                    ),
+                  ),
+                  onChanged: (val) {
+                    if (_debounce?.isActive ?? false) _debounce!.cancel();
+                    _debounce = Timer(const Duration(milliseconds: 500), () {
+                      ref.read(productsProvider.notifier).search(val);
+                    });
+                  },
+                ),
+                const SizedBox(height: 8),
+
+                // Stock Status Filter Bar
+                SingleChildScrollView(
+                  scrollDirection: Axis.horizontal,
+                  child: Row(
+                    children: [
+                      Padding(
+                        padding: const EdgeInsets.only(right: 6.0),
+                        child: FilterChip(
+                          label: const Text('All Products', style: TextStyle(fontSize: 11)),
+                          selected: _stockFilter == 'ALL',
+                          onSelected: (val) => setState(() => _stockFilter = 'ALL'),
+                        ),
+                      ),
+                      Padding(
+                        padding: const EdgeInsets.only(right: 6.0),
+                        child: FilterChip(
+                          avatar: const Icon(LucideIcons.alertTriangle, size: 14, color: Colors.orange),
+                          label: const Text('Low Stock Alerts', style: TextStyle(fontSize: 11)),
+                          selected: _stockFilter == 'LOW_STOCK',
+                          selectedColor: Colors.orange.withValues(alpha: 0.15),
+                          checkmarkColor: Colors.orange,
+                          onSelected: (val) => setState(() => _stockFilter = val ? 'LOW_STOCK' : 'ALL'),
+                        ),
+                      ),
+                      Padding(
+                        padding: const EdgeInsets.only(right: 6.0),
+                        child: FilterChip(
+                          avatar: const Icon(LucideIcons.alertCircle, size: 14, color: Colors.red),
+                          label: const Text('Out of Stock', style: TextStyle(fontSize: 11)),
+                          selected: _stockFilter == 'OUT_OF_STOCK',
+                          selectedColor: Colors.red.withValues(alpha: 0.15),
+                          checkmarkColor: Colors.red,
+                          onSelected: (val) => setState(() => _stockFilter = val ? 'OUT_OF_STOCK' : 'ALL'),
+                        ),
+                      ),
+                    ],
+                  ),
+                ),
+              ],
             ),
           ),
+          const Divider(height: 1),
+
           Expanded(
             child: productsState.when(
               loading: () => const Center(child: CircularProgressIndicator()),
               error: (err, stack) => Center(child: Text('Error: $err')),
               data: (products) {
-                if (products.isEmpty) {
+                final filteredProducts = products.where((p) {
+                  if (_stockFilter == 'LOW_STOCK') {
+                    return p.isLowStock;
+                  } else if (_stockFilter == 'OUT_OF_STOCK') {
+                    return p.isOutOfStock;
+                  }
+                  return true;
+                }).toList();
+
+                if (filteredProducts.isEmpty) {
                   return RefreshIndicator(
                     onRefresh: () =>
                         ref.read(productsProvider.notifier).refresh(),
                     child: ListView(
                       physics: const AlwaysScrollableScrollPhysics(),
-                      children: const [
-                        SizedBox(height: 100),
+                      children: [
+                        const SizedBox(height: 100),
                         Center(
                           child: Column(
                             mainAxisAlignment: MainAxisAlignment.center,
                             children: [
                               Icon(
-                                LucideIcons.packageSearch,
+                                _stockFilter == 'LOW_STOCK'
+                                    ? LucideIcons.checkCircle
+                                    : LucideIcons.packageSearch,
                                 size: 64,
                                 color: Colors.grey,
                               ),
-                              SizedBox(height: 16),
+                              const SizedBox(height: 16),
                               Text(
-                                'No products found.',
-                                style: TextStyle(
+                                _stockFilter == 'LOW_STOCK'
+                                    ? 'No low stock products! All inventory healthy.'
+                                    : (_stockFilter == 'OUT_OF_STOCK'
+                                        ? 'No out-of-stock products.'
+                                        : 'No products found.'),
+                                style: const TextStyle(
                                   color: Colors.grey,
                                   fontSize: 16,
                                 ),
@@ -133,14 +203,14 @@ class _ProductListScreenState extends ConsumerState<ProductListScreen> {
                   child: ListView.builder(
                     controller: _scrollController,
                     physics: const AlwaysScrollableScrollPhysics(),
-                    itemCount: products.length + 1, // +1 for loading indicator
+                    itemCount: filteredProducts.length + 1, // +1 for loading indicator
                     padding: const EdgeInsets.all(16),
                     itemBuilder: (context, index) {
-                      if (index == products.length) {
+                      if (index == filteredProducts.length) {
                         return const SizedBox(height: 80);
                       }
 
-                      final p = products[index];
+                      final p = filteredProducts[index];
                       final catName = categoriesState.value
                               ?.where((c) => c.id == p.categoryId)
                               .firstOrNull
@@ -150,11 +220,12 @@ class _ProductListScreenState extends ConsumerState<ProductListScreen> {
                       return Container(
                         margin: const EdgeInsets.only(bottom: 16),
                         decoration: BoxDecoration(
-                          color: Colors.white,
+                          color: isDark ? const Color(0xFF1E293B) : Colors.white,
                           borderRadius: BorderRadius.circular(20),
+                          border: Border.all(color: isDark ? Colors.white10 : Colors.grey.shade200),
                           boxShadow: [
                             BoxShadow(
-                              color: Colors.grey.withOpacity(0.08),
+                              color: Colors.black.withValues(alpha: isDark ? 0.2 : 0.04),
                               blurRadius: 10,
                               offset: const Offset(0, 4),
                             ),
@@ -235,28 +306,84 @@ class _ProductListScreenState extends ConsumerState<ProductListScreen> {
                                       ],
                                     ),
                                   ),
-                                  Column(
-                                    mainAxisAlignment: MainAxisAlignment.center,
-                                    crossAxisAlignment: CrossAxisAlignment.end,
-                                    children: [
-                                      Text(
-                                        p.currentStock != null
-                                            ? (p.currentStock! > 0
-                                                ? 'Stock: ${p.currentStock! % 1 == 0 ? p.currentStock!.toInt() : p.currentStock}'
-                                                : 'Out of Stock')
-                                            : 'Untracked',
-                                        style: TextStyle(
-                                          color: p.currentStock != null
-                                              ? (p.currentStock! > 0
-                                                  ? const Color(0xFF10B981)
-                                                  : Colors.red)
-                                              : Colors.grey,
-                                          fontSize: 12,
-                                          fontWeight: FontWeight.bold,
-                                        ),
-                                      ),
-                                    ],
-                                  ),
+                                   Column(
+                                     mainAxisAlignment: MainAxisAlignment.center,
+                                     crossAxisAlignment: CrossAxisAlignment.end,
+                                     children: [
+                                       if (!p.trackInventory) ...[
+                                         Container(
+                                           padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 3),
+                                           decoration: BoxDecoration(
+                                             color: Colors.grey.withValues(alpha: 0.1),
+                                             borderRadius: BorderRadius.circular(6),
+                                           ),
+                                           child: const Text('Untracked', style: TextStyle(fontSize: 11, color: Colors.grey, fontWeight: FontWeight.bold)),
+                                         ),
+                                       ] else if (p.isOutOfStock) ...[
+                                         Container(
+                                           padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 3),
+                                           decoration: BoxDecoration(
+                                             color: Colors.red.withValues(alpha: 0.12),
+                                             borderRadius: BorderRadius.circular(6),
+                                             border: Border.all(color: Colors.red.withValues(alpha: 0.3)),
+                                           ),
+                                           child: const Row(
+                                             mainAxisSize: MainAxisSize.min,
+                                             children: [
+                                               Icon(LucideIcons.alertCircle, size: 12, color: Colors.red),
+                                               SizedBox(width: 4),
+                                               Text('Out of Stock', style: TextStyle(fontSize: 11, color: Colors.red, fontWeight: FontWeight.bold)),
+                                             ],
+                                           ),
+                                         ),
+                                       ] else if (p.isLowStock) ...[
+                                         Container(
+                                           padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 3),
+                                           decoration: BoxDecoration(
+                                             color: Colors.orange.withValues(alpha: 0.12),
+                                             borderRadius: BorderRadius.circular(6),
+                                             border: Border.all(color: Colors.orange.withValues(alpha: 0.35)),
+                                           ),
+                                           child: Column(
+                                             crossAxisAlignment: CrossAxisAlignment.end,
+                                             children: [
+                                               Row(
+                                                 mainAxisSize: MainAxisSize.min,
+                                                 children: [
+                                                   const Icon(LucideIcons.alertTriangle, size: 12, color: Colors.orange),
+                                                   const SizedBox(width: 4),
+                                                   Text(
+                                                     'Low: ${p.currentStock! % 1 == 0 ? p.currentStock!.toInt() : p.currentStock}',
+                                                     style: const TextStyle(fontSize: 11, color: Colors.orange, fontWeight: FontWeight.bold),
+                                                   ),
+                                                 ],
+                                               ),
+                                               Text(
+                                                 'Alert <= ${((p.reorderLevel != null && p.reorderLevel! > 0) ? p.reorderLevel : p.minStock) ?? 0}',
+                                                 style: TextStyle(fontSize: 9, color: Colors.orange.shade800),
+                                               ),
+                                             ],
+                                           ),
+                                         ),
+                                       ] else ...[
+                                         Container(
+                                           padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 3),
+                                           decoration: BoxDecoration(
+                                             color: const Color(0xFF10B981).withValues(alpha: 0.1),
+                                             borderRadius: BorderRadius.circular(6),
+                                           ),
+                                           child: Text(
+                                             'Stock: ${p.currentStock! % 1 == 0 ? p.currentStock!.toInt() : p.currentStock}',
+                                             style: const TextStyle(
+                                               color: Color(0xFF10B981),
+                                               fontSize: 12,
+                                               fontWeight: FontWeight.bold,
+                                             ),
+                                           ),
+                                         ),
+                                       ],
+                                     ],
+                                   ),
                                 ],
                               ),
                             ),
@@ -271,7 +398,6 @@ class _ProductListScreenState extends ConsumerState<ProductListScreen> {
           ),
         ],
       ),
-      ),
       floatingActionButton: FloatingActionButton(
         onPressed: () async {
           await Navigator.push(

kifi-app/lib/features/sales/domain/credit_note.dart

@@ -0,0 +1,201 @@
+class CreditNoteItem {
+  final int? id;
+  final int? creditNoteId;
+  final int? invoiceItemId;
+  final int? productId;
+  final int? inventoryItemId;
+  final String? productName;
+  final String? sku;
+  final String? huid;
+  final String? hsnCode;
+  final double quantity;
+  final double? weight;
+  final double unitPrice;
+  final double taxRate;
+  final double cgst;
+  final double sgst;
+  final double igst;
+  final double discount;
+  final double makingCharge;
+  final double otherCharges;
+  final double total;
+
+  CreditNoteItem({
+    this.id,
+    this.creditNoteId,
+    this.invoiceItemId,
+    this.productId,
+    this.inventoryItemId,
+    this.productName,
+    this.sku,
+    this.huid,
+    this.hsnCode,
+    required this.quantity,
+    this.weight,
+    required this.unitPrice,
+    this.taxRate = 0.0,
+    this.cgst = 0.0,
+    this.sgst = 0.0,
+    this.igst = 0.0,
+    this.discount = 0.0,
+    this.makingCharge = 0.0,
+    this.otherCharges = 0.0,
+    required this.total,
+  });
+
+  factory CreditNoteItem.fromJson(Map<String, dynamic> json) {
+    return CreditNoteItem(
+      id: json['id'],
+      creditNoteId: json['creditNoteId'] ?? json['credit_note_id'],
+      invoiceItemId: json['invoiceItemId'] ?? json['invoice_item_id'],
+      productId: json['productId'] ?? json['product_id'],
+      inventoryItemId: json['inventoryItemId'] ?? json['inventory_item_id'],
+      productName: json['productName'] ?? json['product_name'],
+      sku: json['sku'],
+      huid: json['huid'],
+      hsnCode: json['hsnCode'] ?? json['hsn_code'],
+      quantity: (json['quantity'] as num?)?.toDouble() ?? 1.0,
+      weight: (json['weight'] as num?)?.toDouble(),
+      unitPrice: (json['unitPrice'] ?? json['unit_price'] as num?)?.toDouble() ?? 0.0,
+      taxRate: (json['taxRate'] ?? json['tax_rate'] as num?)?.toDouble() ?? 0.0,
+      cgst: (json['cgst'] as num?)?.toDouble() ?? 0.0,
+      sgst: (json['sgst'] as num?)?.toDouble() ?? 0.0,
+      igst: (json['igst'] as num?)?.toDouble() ?? 0.0,
+      discount: (json['discount'] as num?)?.toDouble() ?? 0.0,
+      makingCharge: (json['makingCharge'] ?? json['making_charge'] as num?)?.toDouble() ?? 0.0,
+      otherCharges: (json['otherCharges'] ?? json['other_charges'] as num?)?.toDouble() ?? 0.0,
+      total: (json['total'] as num?)?.toDouble() ?? 0.0,
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    final Map<String, dynamic> data = {};
+    if (id != null) data['id'] = id;
+    if (creditNoteId != null) data['creditNoteId'] = creditNoteId;
+    if (invoiceItemId != null) data['invoiceItemId'] = invoiceItemId;
+    if (productId != null) data['productId'] = productId;
+    if (inventoryItemId != null) data['inventoryItemId'] = inventoryItemId;
+    if (productName != null) data['productName'] = productName;
+    if (sku != null) data['sku'] = sku;
+    if (huid != null) data['huid'] = huid;
+    if (hsnCode != null) data['hsnCode'] = hsnCode;
+    data['quantity'] = quantity;
+    if (weight != null) data['weight'] = weight;
+    data['unitPrice'] = unitPrice;
+    data['taxRate'] = taxRate;
+    data['cgst'] = cgst;
+    data['sgst'] = sgst;
+    data['igst'] = igst;
+    data['discount'] = discount;
+    data['makingCharge'] = makingCharge;
+    data['otherCharges'] = otherCharges;
+    data['total'] = total;
+    return data;
+  }
+}
+
+class CreditNote {
+  final int? id;
+  final int? userId;
+  final int invoiceId;
+  final String creditNoteNumber;
+  final int? customerId;
+  final DateTime returnDate;
+  final String reason; // CUSTOMER_RETURN, RTO_UNDELIVERED, DEFECTIVE, EXCHANGE, OTHER
+  final bool restockItems;
+  final double subtotal;
+  final double taxTotal;
+  final double cgstTotal;
+  final double sgstTotal;
+  final double igstTotal;
+  final double discountTotal;
+  final double totalAmount;
+  final String refundStatus; // ADJUSTED_TO_AR, REFUNDED_TO_WALLET, STORE_CREDIT, PENDING
+  final int? refundWalletId;
+  final String? notes;
+  final DateTime? createdAt;
+  final DateTime? updatedAt;
+  final List<CreditNoteItem> items;
+
+  CreditNote({
+    this.id,
+    this.userId,
+    required this.invoiceId,
+    required this.creditNoteNumber,
+    this.customerId,
+    required this.returnDate,
+    this.reason = 'CUSTOMER_RETURN',
+    this.restockItems = true,
+    required this.subtotal,
+    this.taxTotal = 0.0,
+    this.cgstTotal = 0.0,
+    this.sgstTotal = 0.0,
+    this.igstTotal = 0.0,
+    this.discountTotal = 0.0,
+    required this.totalAmount,
+    this.refundStatus = 'ADJUSTED_TO_AR',
+    this.refundWalletId,
+    this.notes,
+    this.createdAt,
+    this.updatedAt,
+    this.items = const [],
+  });
+
+  factory CreditNote.fromJson(Map<String, dynamic> json) {
+    return CreditNote(
+      id: json['id'],
+      userId: json['userId'] ?? json['user_id'],
+      invoiceId: json['invoiceId'] ?? json['invoice_id'] ?? 0,
+      creditNoteNumber: json['creditNoteNumber'] ?? json['credit_note_number'] ?? '',
+      customerId: json['customerId'] ?? json['customer_id'],
+      returnDate: json['returnDate'] != null
+          ? DateTime.parse(json['returnDate'])
+          : (json['return_date'] != null ? DateTime.parse(json['return_date']) : DateTime.now()),
+      reason: json['reason'] ?? 'CUSTOMER_RETURN',
+      restockItems: json['restockItems'] ?? json['restock_items'] ?? true,
+      subtotal: (json['subtotal'] as num?)?.toDouble() ?? 0.0,
+      taxTotal: (json['taxTotal'] ?? json['tax_total'] as num?)?.toDouble() ?? 0.0,
+      cgstTotal: (json['cgstTotal'] ?? json['cgst_total'] as num?)?.toDouble() ?? 0.0,
+      sgstTotal: (json['sgstTotal'] ?? json['sgst_total'] as num?)?.toDouble() ?? 0.0,
+      igstTotal: (json['igstTotal'] ?? json['igst_total'] as num?)?.toDouble() ?? 0.0,
+      discountTotal: (json['discountTotal'] ?? json['discount_total'] as num?)?.toDouble() ?? 0.0,
+      totalAmount: (json['totalAmount'] ?? json['total_amount'] as num?)?.toDouble() ?? 0.0,
+      refundStatus: json['refundStatus'] ?? json['refund_status'] ?? 'ADJUSTED_TO_AR',
+      refundWalletId: json['refundWalletId'] ?? json['refund_wallet_id'],
+      notes: json['notes'],
+      createdAt: json['createdAt'] != null
+          ? DateTime.parse(json['createdAt'])
+          : (json['created_at'] != null ? DateTime.parse(json['created_at']) : null),
+      updatedAt: json['updatedAt'] != null
+          ? DateTime.parse(json['updatedAt'])
+          : (json['updated_at'] != null ? DateTime.parse(json['updated_at']) : null),
+      items: json['items'] != null
+          ? (json['items'] as List).map((i) => CreditNoteItem.fromJson(i)).toList()
+          : [],
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    final Map<String, dynamic> data = {};
+    if (id != null) data['id'] = id;
+    if (userId != null) data['userId'] = userId;
+    data['invoiceId'] = invoiceId;
+    data['creditNoteNumber'] = creditNoteNumber;
+    if (customerId != null) data['customerId'] = customerId;
+    data['returnDate'] = returnDate.toIso8601String().split('T')[0];
+    data['reason'] = reason;
+    data['restockItems'] = restockItems;
+    data['subtotal'] = subtotal;
+    data['taxTotal'] = taxTotal;
+    data['cgstTotal'] = cgstTotal;
+    data['sgstTotal'] = sgstTotal;
+    data['igstTotal'] = igstTotal;
+    data['discountTotal'] = discountTotal;
+    data['totalAmount'] = totalAmount;
+    data['refundStatus'] = refundStatus;
+    if (refundWalletId != null) data['refundWalletId'] = refundWalletId;
+    if (notes != null) data['notes'] = notes;
+    data['items'] = items.map((i) => i.toJson()).toList();
+    return data;
+  }
+}

kifi-app/lib/features/sales/domain/invoice.dart

@@ -195,6 +195,12 @@ class Invoice {
   final int? salesChannelId;
   final String? salesChannel;
   final String? marketplaceOrderId;
+  final String? courierPartner;
+  final String? trackingNumber;
+  final String? dispatchStatus; // PENDING, PACKED, SHIPPED, IN_TRANSIT, DELIVERED, RTO
+  final DateTime? shippedAt;
+  final String? shippingAddress;
+  final String? shippingPincode;
   final int? placeOfSupplyStateId;
   final String? placeOfSupply;
   final List<InvoiceItem> items;
@@ -227,6 +233,12 @@ class Invoice {
     this.salesChannelId,
     this.salesChannel,
     this.marketplaceOrderId,
+    this.courierPartner,
+    this.trackingNumber,
+    this.dispatchStatus,
+    this.shippedAt,
+    this.shippingAddress,
+    this.shippingPincode,
     this.placeOfSupplyStateId,
     this.placeOfSupply,
     this.items = const [],
@@ -267,6 +279,14 @@ class Invoice {
       salesChannelId: json['salesChannelId'] ?? json['sales_channel_id'],
       salesChannel: json['salesChannel'] ?? json['sales_channel'],
       marketplaceOrderId: json['marketplaceOrderId'] ?? json['marketplace_order_id'],
+      courierPartner: json['courierPartner'] ?? json['courier_partner'],
+      trackingNumber: json['trackingNumber'] ?? json['tracking_number'],
+      dispatchStatus: json['dispatchStatus'] ?? json['dispatch_status'] ?? 'PENDING',
+      shippedAt: json['shippedAt'] != null
+          ? DateTime.parse(json['shippedAt'])
+          : (json['shipped_at'] != null ? DateTime.parse(json['shipped_at']) : null),
+      shippingAddress: json['shippingAddress'] ?? json['shipping_address'],
+      shippingPincode: json['shippingPincode'] ?? json['shipping_pincode'],
       placeOfSupplyStateId: json['placeOfSupplyStateId'] ?? json['place_of_supply_state_id'],
       placeOfSupply: json['placeOfSupply'] ?? json['place_of_supply'],
       items: json['items'] != null
@@ -314,6 +334,14 @@ class Invoice {
     if (salesChannelId != null) data['salesChannelId'] = salesChannelId;
     if (salesChannel != null) data['salesChannel'] = salesChannel;
     if (marketplaceOrderId != null) data['marketplaceOrderId'] = marketplaceOrderId;
+    if (courierPartner != null) data['courierPartner'] = courierPartner;
+    if (trackingNumber != null) data['trackingNumber'] = trackingNumber;
+    if (dispatchStatus != null) data['dispatchStatus'] = dispatchStatus;
+    if (shippedAt != null) {
+      data['shippedAt'] = shippedAt!.toIso8601String();
+    }
+    if (shippingAddress != null) data['shippingAddress'] = shippingAddress;
+    if (shippingPincode != null) data['shippingPincode'] = shippingPincode;
     if (placeOfSupplyStateId != null) data['placeOfSupplyStateId'] = placeOfSupplyStateId;
     if (placeOfSupply != null) data['placeOfSupply'] = placeOfSupply;
     data['items'] = items.map((i) => i.toJson()).toList();

kifi-app/lib/features/sales/domain/marketplace_settlement.dart

@@ -0,0 +1,103 @@
+class MarketplaceSettlement {
+  final int? id;
+  final int? userId;
+  final int invoiceId;
+  final int? salesChannelId;
+  final String? channelName;
+  final String? settlementRef;
+  final DateTime settlementDate;
+  final double grossAmount;
+  final double commissionFee;
+  final double shippingFee;
+  final double otherFees;
+  final double feeGst;
+  final double tcsGstAmount;
+  final double tdsAmount;
+  final double totalDeductions;
+  final double netPayoutAmount;
+  final int? payoutWalletId;
+  final String status;
+  final String? notes;
+  final DateTime? createdAt;
+  final DateTime? updatedAt;
+
+  MarketplaceSettlement({
+    this.id,
+    this.userId,
+    required this.invoiceId,
+    this.salesChannelId,
+    this.channelName,
+    this.settlementRef,
+    required this.settlementDate,
+    required this.grossAmount,
+    this.commissionFee = 0.0,
+    this.shippingFee = 0.0,
+    this.otherFees = 0.0,
+    this.feeGst = 0.0,
+    this.tcsGstAmount = 0.0,
+    this.tdsAmount = 0.0,
+    required this.totalDeductions,
+    required this.netPayoutAmount,
+    this.payoutWalletId,
+    this.status = 'SETTLED',
+    this.notes,
+    this.createdAt,
+    this.updatedAt,
+  });
+
+  factory MarketplaceSettlement.fromJson(Map<String, dynamic> json) {
+    return MarketplaceSettlement(
+      id: json['id'],
+      userId: json['userId'] ?? json['user_id'],
+      invoiceId: json['invoiceId'] ?? json['invoice_id'] ?? 0,
+      salesChannelId: json['salesChannelId'] ?? json['sales_channel_id'],
+      channelName: json['channelName'] ?? json['channel_name'],
+      settlementRef: json['settlementRef'] ?? json['settlement_ref'],
+      settlementDate: json['settlementDate'] != null
+          ? DateTime.parse(json['settlementDate'])
+          : (json['settlement_date'] != null ? DateTime.parse(json['settlement_date']) : DateTime.now()),
+      grossAmount: (json['grossAmount'] ?? json['gross_amount'] as num?)?.toDouble() ?? 0.0,
+      commissionFee: (json['commissionFee'] ?? json['commission_fee'] as num?)?.toDouble() ?? 0.0,
+      shippingFee: (json['shippingFee'] ?? json['shipping_fee'] as num?)?.toDouble() ?? 0.0,
+      otherFees: (json['otherFees'] ?? json['other_fees'] as num?)?.toDouble() ?? 0.0,
+      feeGst: (json['feeGst'] ?? json['fee_gst'] as num?)?.toDouble() ?? 0.0,
+      tcsGstAmount: (json['tcsGstAmount'] ?? json['tcs_gst_amount'] as num?)?.toDouble() ?? 0.0,
+      tdsAmount: (json['tdsAmount'] ?? json['tds_amount'] as num?)?.toDouble() ?? 0.0,
+      totalDeductions: (json['totalDeductions'] ?? json['total_deductions'] as num?)?.toDouble() ?? 0.0,
+      netPayoutAmount: (json['netPayoutAmount'] ?? json['net_payout_amount'] as num?)?.toDouble() ?? 0.0,
+      payoutWalletId: json['payoutWalletId'] ?? json['payout_wallet_id'],
+      status: json['status'] ?? 'SETTLED',
+      notes: json['notes'],
+      createdAt: json['createdAt'] != null
+          ? DateTime.parse(json['createdAt'])
+          : (json['created_at'] != null ? DateTime.parse(json['created_at']) : null),
+      updatedAt: json['updatedAt'] != null
+          ? DateTime.parse(json['updatedAt'])
+          : (json['updated_at'] != null ? DateTime.parse(json['updated_at']) : null),
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    final Map<String, dynamic> data = {};
+    if (id != null) data['id'] = id;
+    if (userId != null) data['userId'] = userId;
+    data['invoiceId'] = invoiceId;
+    if (salesChannelId != null) data['salesChannelId'] = salesChannelId;
+    if (channelName != null) data['channelName'] = channelName;
+    if (settlementRef != null) data['settlementRef'] = settlementRef;
+    data['settlementDate'] = settlementDate.toIso8601String().split('T')[0];
+    data['grossAmount'] = grossAmount;
+    data['commissionFee'] = commissionFee;
+    data['shippingFee'] = shippingFee;
+    data['otherFees'] = otherFees;
+    data['feeGst'] = feeGst;
+    data['tcsGstAmount'] = tcsGstAmount;
+    data['tdsAmount'] = tdsAmount;
+    data['totalDeductions'] = totalDeductions;
+    data['netPayoutAmount'] = netPayoutAmount;
+    if (payoutWalletId != null) data['payoutWalletId'] = payoutWalletId;
+    data['status'] = status;
+    if (notes != null) data['notes'] = notes;
+    return data;
+  }
+}

kifi-app/lib/features/sales/presentation/credit_notes_list_screen.dart

@@ -0,0 +1,451 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:lucide_icons_flutter/lucide_icons.dart';
+import 'package:intl/intl.dart';
+import '../domain/credit_note.dart';
+import '../providers/credit_notes_provider.dart';
+import '../providers/customers_provider.dart';
+import '../providers/invoices_provider.dart';
+import 'package:pdf/pdf.dart';
+import 'package:pdf/widgets.dart' as pw;
+import 'package:printing/printing.dart';
+import '../../business/providers/business_provider.dart';
+
+class CreditNotesListScreen extends ConsumerStatefulWidget {
+  const CreditNotesListScreen({super.key});
+
+  @override
+  ConsumerState<CreditNotesListScreen> createState() => _CreditNotesListScreenState();
+}
+
+class _CreditNotesListScreenState extends ConsumerState<CreditNotesListScreen> {
+  String _searchQuery = '';
+  final TextEditingController _searchController = TextEditingController();
+  String? _selectedReasonFilter;
+
+  final formatCurrency = NumberFormat.currency(symbol: '₹');
+  final formatDate = DateFormat('MMM dd, yyyy');
+
+  @override
+  void dispose() {
+    _searchController.dispose();
+    super.dispose();
+  }
+
+  Future<void> _shareCreditNotePdf(CreditNote cn) async {
+    try {
+      final pdf = pw.Document();
+      final business = ref.read(businessProfileProvider).value;
+      final customers = ref.read(customersProvider).value ?? [];
+      final customer = customers.where((c) => c.id == cn.customerId).firstOrNull;
+      final invoices = ref.read(invoicesProvider).value ?? [];
+      final invoice = invoices.where((i) => i.id == cn.invoiceId).firstOrNull;
+
+      final pdfFormatCurrency = NumberFormat.currency(symbol: 'Rs. ', decimalDigits: 2);
+      final pdfFormatDate = DateFormat('dd MMM yyyy');
+
+      pdf.addPage(
+        pw.MultiPage(
+          pageFormat: PdfPageFormat.a4,
+          margin: const pw.EdgeInsets.all(32),
+          build: (context) => [
+            pw.Column(
+              crossAxisAlignment: pw.CrossAxisAlignment.start,
+              children: [
+                // Header
+                pw.Row(
+                  mainAxisAlignment: pw.MainAxisAlignment.spaceBetween,
+                  crossAxisAlignment: pw.CrossAxisAlignment.start,
+                  children: [
+                    pw.Expanded(
+                      child: pw.Column(
+                        crossAxisAlignment: pw.CrossAxisAlignment.start,
+                        children: [
+                          pw.Text(
+                            business?.businessName ?? 'KIFI ENTERPRISE',
+                            style: pw.TextStyle(fontSize: 18, fontWeight: pw.FontWeight.bold, color: PdfColors.red900),
+                          ),
+                          if (business?.address != null && business!.address!.isNotEmpty)
+                            pw.Text(business.address!, style: const pw.TextStyle(fontSize: 9, color: PdfColors.grey700)),
+                          if (business?.gstin != null && business!.gstin!.isNotEmpty)
+                            pw.Text('GSTIN: ${business.gstin}', style: pw.TextStyle(fontSize: 9, fontWeight: pw.FontWeight.bold, color: PdfColors.blue800)),
+                        ],
+                      ),
+                    ),
+                    pw.Column(
+                      crossAxisAlignment: pw.CrossAxisAlignment.end,
+                      children: [
+                        pw.Text(
+                          'CREDIT NOTE',
+                          style: pw.TextStyle(fontSize: 20, fontWeight: pw.FontWeight.bold, color: PdfColors.red900),
+                        ),
+                        pw.SizedBox(height: 4),
+                        pw.Text('CN #: ${cn.creditNoteNumber}', style: pw.TextStyle(fontSize: 11, fontWeight: pw.FontWeight.bold)),
+                        pw.Text('Date: ${pdfFormatDate.format(cn.returnDate)}', style: const pw.TextStyle(fontSize: 9, color: PdfColors.grey700)),
+                        if (invoice != null)
+                          pw.Text('Original Inv #: ${invoice.invoiceNumber}', style: pw.TextStyle(fontSize: 9, fontWeight: pw.FontWeight.bold, color: PdfColors.blue900)),
+                        pw.Text('Reason: ${cn.reason}', style: const pw.TextStyle(fontSize: 8.5, color: PdfColors.grey700)),
+                      ],
+                    ),
+                  ],
+                ),
+                pw.SizedBox(height: 16),
+
+                // Bill To
+                pw.Container(
+                  padding: const pw.EdgeInsets.all(10),
+                  decoration: pw.BoxDecoration(
+                    color: PdfColors.grey100,
+                    border: pw.Border.all(color: PdfColors.grey400, width: 0.5),
+                    borderRadius: const pw.BorderRadius.all(pw.Radius.circular(6)),
+                  ),
+                  child: pw.Row(
+                    children: [
+                      pw.Expanded(
+                        child: pw.Column(
+                          crossAxisAlignment: pw.CrossAxisAlignment.start,
+                          children: [
+                            pw.Text('CREDITED TO (CUSTOMER):', style: pw.TextStyle(fontSize: 8.5, fontWeight: pw.FontWeight.bold, color: PdfColors.grey700)),
+                            pw.SizedBox(height: 2),
+                            pw.Text(customer?.name ?? 'Valued Customer', style: pw.TextStyle(fontSize: 12, fontWeight: pw.FontWeight.bold)),
+                            if (customer?.phone != null) pw.Text('Phone: ${customer!.phone}', style: const pw.TextStyle(fontSize: 9)),
+                            if (customer?.gstin != null) pw.Text('GSTIN: ${customer!.gstin}', style: pw.TextStyle(fontSize: 9, fontWeight: pw.FontWeight.bold)),
+                          ],
+                        ),
+                      ),
+                    ],
+                  ),
+                ),
+                pw.SizedBox(height: 16),
+
+                // Table of Returned Items
+                pw.TableHelper.fromTextArray(
+                  context: context,
+                  border: const pw.TableBorder(
+                    bottom: pw.BorderSide(color: PdfColors.grey300, width: 0.5),
+                    horizontalInside: pw.BorderSide(color: PdfColors.grey200, width: 0.5),
+                  ),
+                  headerStyle: pw.TextStyle(fontWeight: pw.FontWeight.bold, color: PdfColors.white, fontSize: 8),
+                  headerDecoration: const pw.BoxDecoration(color: PdfColors.red900),
+                  cellStyle: const pw.TextStyle(fontSize: 8),
+                  headers: ['Returned Particulars', 'Qty / Weight', 'Unit Rate', 'GST Rate', 'Tax Amount', 'Credit Amount'],
+                  data: cn.items.map((item) {
+                    final qtyStr = item.weight != null && item.weight! > 0
+                        ? '${item.weight!.toStringAsFixed(3)} g'
+                        : '${item.quantity.toInt()} pcs';
+                    final taxAmt = item.cgst + item.sgst + item.igst;
+                    return [
+                      item.productName ?? 'Item',
+                      qtyStr,
+                      pdfFormatCurrency.format(item.unitPrice),
+                      '${item.taxRate.toStringAsFixed(1)}%',
+                      taxAmt > 0 ? pdfFormatCurrency.format(taxAmt) : '-',
+                      pdfFormatCurrency.format(item.total),
+                    ];
+                  }).toList(),
+                ),
+                pw.SizedBox(height: 14),
+
+                // Grand Total
+                pw.Row(
+                  mainAxisAlignment: pw.MainAxisAlignment.end,
+                  children: [
+                    pw.Container(
+                      width: 200,
+                      padding: const pw.EdgeInsets.all(8),
+                      decoration: const pw.BoxDecoration(
+                        color: PdfColors.red50,
+                        borderRadius: pw.BorderRadius.all(pw.Radius.circular(6)),
+                      ),
+                      child: pw.Column(
+                        children: [
+                          pw.Row(
+                            mainAxisAlignment: pw.MainAxisAlignment.spaceBetween,
+                            children: [
+                              pw.Text('Total Credit Value:', style: pw.TextStyle(fontWeight: pw.FontWeight.bold, fontSize: 11, color: PdfColors.red900)),
+                              pw.Text(pdfFormatCurrency.format(cn.totalAmount), style: pw.TextStyle(fontWeight: pw.FontWeight.bold, fontSize: 12, color: PdfColors.red900)),
+                            ],
+                          ),
+                        ],
+                      ),
+                    ),
+                  ],
+                ),
+                pw.SizedBox(height: 24),
+
+                // Signatures
+                pw.Row(
+                  mainAxisAlignment: pw.MainAxisAlignment.spaceBetween,
+                  children: [
+                    pw.Column(
+                      crossAxisAlignment: pw.CrossAxisAlignment.start,
+                      children: [
+                        pw.SizedBox(height: 25),
+                        pw.Text('Customer\'s Acknowledgement', style: const pw.TextStyle(fontSize: 8, color: PdfColors.grey700)),
+                      ],
+                    ),
+                    pw.Column(
+                      crossAxisAlignment: pw.CrossAxisAlignment.end,
+                      children: [
+                        pw.SizedBox(height: 25),
+                        pw.Text('For ${business?.businessName ?? "KIFI ENTERPRISE"} (Authorized Signatory)', style: const pw.TextStyle(fontSize: 8, color: PdfColors.grey700)),
+                      ],
+                    ),
+                  ],
+                ),
+              ],
+            ),
+          ],
+        ),
+      );
+
+      final pdfBytes = await pdf.save();
+      await Printing.sharePdf(bytes: pdfBytes, filename: 'CreditNote_${cn.creditNoteNumber}.pdf');
+    } catch (e) {
+      if (mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(content: Text('Error generating Credit Note PDF: $e')),
+        );
+      }
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final creditNotesState = ref.watch(creditNotesProvider);
+    final customers = ref.watch(customersProvider).value ?? [];
+    final invoices = ref.watch(invoicesProvider).value ?? [];
+    final isDark = Theme.of(context).brightness == Brightness.dark;
+
+    return Scaffold(
+      backgroundColor: isDark ? const Color(0xFF0F172A) : const Color(0xFFF8FAFC),
+      appBar: AppBar(
+        title: const Text('Sales Returns & Credit Notes', style: TextStyle(fontWeight: FontWeight.bold)),
+        elevation: 0,
+        backgroundColor: isDark ? const Color(0xFF1E293B) : Colors.white,
+        foregroundColor: isDark ? Colors.white : Colors.black,
+        centerTitle: true,
+      ),
+      body: Column(
+        children: [
+          // Search & Filter Header
+          Container(
+            color: isDark ? const Color(0xFF1E293B) : Colors.white,
+            padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 10),
+            child: Column(
+              children: [
+                TextField(
+                  controller: _searchController,
+                  decoration: InputDecoration(
+                    hintText: 'Search Credit Note #, Invoice # or Customer...',
+                    prefixIcon: const Icon(LucideIcons.search, color: Colors.grey),
+                    contentPadding: const EdgeInsets.symmetric(vertical: 12),
+                    border: OutlineInputBorder(borderRadius: BorderRadius.circular(12)),
+                    isDense: true,
+                    suffixIcon: _searchQuery.isNotEmpty
+                        ? IconButton(
+                            icon: const Icon(LucideIcons.xCircle, size: 18),
+                            onPressed: () {
+                              _searchController.clear();
+                              setState(() => _searchQuery = '');
+                            },
+                          )
+                        : null,
+                  ),
+                  onChanged: (val) => setState(() => _searchQuery = val.trim()),
+                ),
+                const SizedBox(height: 8),
+
+                // Reason Filter Chips
+                SingleChildScrollView(
+                  scrollDirection: Axis.horizontal,
+                  child: Row(
+                    children: [
+                      Padding(
+                        padding: const EdgeInsets.only(right: 6.0),
+                        child: FilterChip(
+                          label: const Text('All Returns', style: TextStyle(fontSize: 11)),
+                          selected: _selectedReasonFilter == null,
+                          onSelected: (selected) {
+                            if (selected) setState(() => _selectedReasonFilter = null);
+                          },
+                        ),
+                      ),
+                      ...['CUSTOMER_RETURN', 'RTO_UNDELIVERED', 'DEFECTIVE', 'EXCHANGE'].map((code) {
+                        final label = code == 'CUSTOMER_RETURN'
+                            ? 'Customer Returns'
+                            : (code == 'RTO_UNDELIVERED' ? 'RTO Undelivered' : (code == 'DEFECTIVE' ? 'Defective' : 'Exchange'));
+                        final isSelected = _selectedReasonFilter == code;
+                        return Padding(
+                          padding: const EdgeInsets.only(right: 6.0),
+                          child: FilterChip(
+                            label: Text(label, style: const TextStyle(fontSize: 11)),
+                            selected: isSelected,
+                            onSelected: (selected) {
+                              setState(() => _selectedReasonFilter = selected ? code : null);
+                            },
+                          ),
+                        );
+                      }),
+                    ],
+                  ),
+                ),
+              ],
+            ),
+          ),
+
+          // List
+          Expanded(
+            child: creditNotesState.when(
+              data: (creditNotes) {
+                final filtered = creditNotes.where((cn) {
+                  final q = _searchQuery.toLowerCase();
+                  final invoice = invoices.where((i) => i.id == cn.invoiceId).firstOrNull;
+                  final customer = customers.where((c) => c.id == cn.customerId).firstOrNull;
+
+                  final matchesNumber = cn.creditNoteNumber.toLowerCase().contains(q);
+                  final matchesInvoice = invoice != null && invoice.invoiceNumber.toLowerCase().contains(q);
+                  final matchesCustomer = customer != null && customer.name.toLowerCase().contains(q);
+                  final matchesSearch = q.isEmpty || matchesNumber || matchesInvoice || matchesCustomer;
+
+                  final matchesReason = _selectedReasonFilter == null || cn.reason == _selectedReasonFilter;
+
+                  return matchesSearch && matchesReason;
+                }).toList();
+
+                if (filtered.isEmpty) {
+                  return RefreshIndicator(
+                    onRefresh: () => ref.refresh(creditNotesProvider.future),
+                    child: ListView(
+                      physics: const AlwaysScrollableScrollPhysics(),
+                      children: const [
+                        SizedBox(height: 120),
+                        Center(
+                          child: Column(
+                            children: [
+                              Icon(LucideIcons.undo2, size: 64, color: Colors.grey),
+                              SizedBox(height: 16),
+                              Text('No credit notes or returns recorded.', style: TextStyle(color: Colors.grey, fontSize: 16)),
+                            ],
+                          ),
+                        ),
+                      ],
+                    ),
+                  );
+                }
+
+                return RefreshIndicator(
+                  onRefresh: () => ref.refresh(creditNotesProvider.future),
+                  child: ListView.builder(
+                    padding: const EdgeInsets.all(16),
+                    itemCount: filtered.length,
+                    itemBuilder: (context, index) {
+                      final cn = filtered[index];
+                      final invoice = invoices.where((i) => i.id == cn.invoiceId).firstOrNull;
+                      final customer = customers.where((c) => c.id == cn.customerId).firstOrNull;
+
+                      return Container(
+                        margin: const EdgeInsets.only(bottom: 12),
+                        padding: const EdgeInsets.all(16),
+                        decoration: BoxDecoration(
+                          color: isDark ? const Color(0xFF1E293B) : Colors.white,
+                          borderRadius: BorderRadius.circular(16),
+                          border: Border.all(color: isDark ? Colors.white10 : Colors.grey.shade200),
+                        ),
+                        child: Column(
+                          crossAxisAlignment: CrossAxisAlignment.start,
+                          children: [
+                            Row(
+                              mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                              children: [
+                                Row(
+                                  children: [
+                                    Container(
+                                      padding: const EdgeInsets.all(6),
+                                      decoration: BoxDecoration(
+                                        color: Colors.red.withValues(alpha: 0.12),
+                                        borderRadius: BorderRadius.circular(8),
+                                      ),
+                                      child: const Icon(LucideIcons.undo2, color: Colors.red, size: 16),
+                                    ),
+                                    const SizedBox(width: 8),
+                                    Text(
+                                      cn.creditNoteNumber,
+                                      style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 15),
+                                    ),
+                                  ],
+                                ),
+                                Container(
+                                  padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 3),
+                                  decoration: BoxDecoration(
+                                    color: Colors.red.withValues(alpha: 0.1),
+                                    borderRadius: BorderRadius.circular(6),
+                                    border: Border.all(color: Colors.red.withValues(alpha: 0.3)),
+                                  ),
+                                  child: Text(
+                                    cn.reason.replaceAll('_', ' '),
+                                    style: const TextStyle(fontSize: 10, fontWeight: FontWeight.bold, color: Colors.red),
+                                  ),
+                                ),
+                              ],
+                            ),
+                            const SizedBox(height: 10),
+
+                            Row(
+                              children: [
+                                const Icon(LucideIcons.user, size: 14, color: Colors.grey),
+                                const SizedBox(width: 6),
+                                Text(
+                                  customer?.name ?? 'Walk-in Customer',
+                                  style: const TextStyle(fontWeight: FontWeight.w600, fontSize: 13),
+                                ),
+                                const Spacer(),
+                                if (invoice != null) ...[
+                                  Text(
+                                    'Inv #${invoice.invoiceNumber}',
+                                    style: TextStyle(fontSize: 12, color: Colors.grey.shade600),
+                                  ),
+                                ],
+                              ],
+                            ),
+                            const SizedBox(height: 10),
+
+                            Row(
+                              mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                              children: [
+                                Text(
+                                  formatDate.format(cn.returnDate),
+                                  style: TextStyle(fontSize: 12, color: Colors.grey.shade600),
+                                ),
+                                Row(
+                                  children: [
+                                    Text(
+                                      formatCurrency.format(cn.totalAmount),
+                                      style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 16, color: Colors.red),
+                                    ),
+                                    const SizedBox(width: 8),
+                                    IconButton(
+                                      icon: const Icon(LucideIcons.share2, size: 18, color: Colors.blue),
+                                      tooltip: 'Share Credit Note PDF',
+                                      onPressed: () => _shareCreditNotePdf(cn),
+                                    ),
+                                  ],
+                                ),
+                              ],
+                            ),
+                          ],
+                        ),
+                      );
+                    },
+                  ),
+                );
+              },
+              loading: () => const Center(child: CircularProgressIndicator()),
+              error: (e, stack) => Center(child: Text('Error: $e')),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}

kifi-app/lib/features/sales/presentation/invoice_builder_screen.dart

@@ -107,6 +107,10 @@ class _InvoiceBuilderScreenState extends ConsumerState<InvoiceBuilderScreen> {
   final _emiAmountCtrl = TextEditingController();
   final _discountCtrl = TextEditingController(text: '0.0');
   final _marketplaceOrderIdCtrl = TextEditingController();
+  final _courierPartnerCtrl = TextEditingController();
+  final _trackingNumberCtrl = TextEditingController();
+  final _shippingAddressCtrl = TextEditingController();
+  final _shippingPincodeCtrl = TextEditingController();
 
   DateTime _invoiceDate = DateTime.now();
   DateTime? _dueDate;
@@ -118,6 +122,11 @@ class _InvoiceBuilderScreenState extends ConsumerState<InvoiceBuilderScreen> {
   final List<InvoiceItem> _items = [];
   bool _isLoading = false;
 
+  // Logistics & Delivery State
+  String _dispatchStatus = 'PENDING';
+  bool _sameAsCustomerAddress = true;
+  DateTime? _shippedAt;
+
   XFile? _invoiceFile;
   String? _invoiceUrl;
 
@@ -143,6 +152,13 @@ class _InvoiceBuilderScreenState extends ConsumerState<InvoiceBuilderScreen> {
       _selectedSalesChannelId = inv.salesChannelId;
       _selectedSalesChannelName = inv.salesChannel;
       _marketplaceOrderIdCtrl.text = inv.marketplaceOrderId ?? '';
+      _courierPartnerCtrl.text = inv.courierPartner ?? '';
+      _trackingNumberCtrl.text = inv.trackingNumber ?? '';
+      _dispatchStatus = inv.dispatchStatus ?? 'PENDING';
+      _shippedAt = inv.shippedAt;
+      _shippingAddressCtrl.text = inv.shippingAddress ?? '';
+      _shippingPincodeCtrl.text = inv.shippingPincode ?? '';
+      _sameAsCustomerAddress = (inv.shippingAddress == null || inv.shippingAddress!.trim().isEmpty);
       _selectedPlaceOfSupplyStateId = inv.placeOfSupplyStateId;
       _selectedPlaceOfSupplyStateName = inv.placeOfSupply;
       _notesCtrl.text = inv.notes ?? '';
@@ -181,6 +197,10 @@ class _InvoiceBuilderScreenState extends ConsumerState<InvoiceBuilderScreen> {
     _emiAmountCtrl.dispose();
     _discountCtrl.dispose();
     _marketplaceOrderIdCtrl.dispose();
+    _courierPartnerCtrl.dispose();
+    _trackingNumberCtrl.dispose();
+    _shippingAddressCtrl.dispose();
+    _shippingPincodeCtrl.dispose();
     super.dispose();
   }
 
@@ -502,6 +522,12 @@ class _InvoiceBuilderScreenState extends ConsumerState<InvoiceBuilderScreen> {
         salesChannelId: _selectedSalesChannelId,
         salesChannel: _selectedSalesChannelName,
         marketplaceOrderId: _marketplaceOrderIdCtrl.text.trim().isNotEmpty ? _marketplaceOrderIdCtrl.text.trim() : null,
+        courierPartner: _courierPartnerCtrl.text.trim().isNotEmpty ? _courierPartnerCtrl.text.trim() : null,
+        trackingNumber: _trackingNumberCtrl.text.trim().isNotEmpty ? _trackingNumberCtrl.text.trim() : null,
+        dispatchStatus: _dispatchStatus,
+        shippedAt: _shippedAt ?? (_dispatchStatus == 'SHIPPED' || _dispatchStatus == 'IN_TRANSIT' || _dispatchStatus == 'DELIVERED' ? DateTime.now() : null),
+        shippingAddress: !_sameAsCustomerAddress && _shippingAddressCtrl.text.trim().isNotEmpty ? _shippingAddressCtrl.text.trim() : null,
+        shippingPincode: !_sameAsCustomerAddress && _shippingPincodeCtrl.text.trim().isNotEmpty ? _shippingPincodeCtrl.text.trim() : null,
         placeOfSupplyStateId: effectiveSupplyStateId,
         placeOfSupply: _selectedPlaceOfSupplyStateName ?? ref.read(indianStatesProvider).value?.where((s) => s.id == effectiveSupplyStateId).firstOrNull?.name,
         items: processedItems,
@@ -1047,6 +1073,11 @@ class _InvoiceBuilderScreenState extends ConsumerState<InvoiceBuilderScreen> {
 
             const SizedBox(height: 24),
 
+            // Shipping & Courier Logistics Section
+            _buildShippingLogisticsSection(isDark),
+
+            const SizedBox(height: 24),
+
             // Notes & Remarks
             PremiumTextField(
               controller: _notesCtrl,
@@ -1787,6 +1818,240 @@ class _InvoiceBuilderScreenState extends ConsumerState<InvoiceBuilderScreen> {
       ),
     );
   }
+
+  Future<void> _scanTrackingBarcode() async {
+    final code = await Navigator.push<String>(
+      context,
+      MaterialPageRoute(builder: (_) => const BarcodeScannerScreen()),
+    );
+    if (code != null && code.isNotEmpty) {
+      setState(() {
+        _trackingNumberCtrl.text = code.trim();
+        if (_dispatchStatus == 'PENDING') {
+          _dispatchStatus = 'SHIPPED';
+          _shippedAt = DateTime.now();
+        }
+      });
+    }
+  }
+
+  Widget _buildShippingLogisticsSection(bool isDark) {
+    final customers = ref.watch(customersProvider).value ?? [];
+    final customer = _selectedCustomerId == null 
+        ? null 
+        : customers.where((c) => c.id == _selectedCustomerId).firstOrNull;
+
+    final courierSuggestions = [
+      'Delhivery',
+      'BlueDart',
+      'Shiprocket',
+      'DTDC',
+      'India Post',
+      'Amazon Shipping',
+      'Ekart',
+      'Shadowfax',
+      'Direct / Hand Delivery',
+    ];
+
+    final dispatchStatuses = [
+      {'status': 'PENDING', 'label': 'Pending', 'color': Colors.grey},
+      {'status': 'PACKED', 'label': 'Packed', 'color': Colors.blue},
+      {'status': 'SHIPPED', 'label': 'Shipped', 'color': Colors.indigo},
+      {'status': 'IN_TRANSIT', 'label': 'In Transit', 'color': Colors.amber.shade800},
+      {'status': 'DELIVERED', 'label': 'Delivered', 'color': Colors.green},
+      {'status': 'RTO', 'label': 'RTO / Return', 'color': Colors.red},
+    ];
+
+    return Container(
+      padding: const EdgeInsets.all(20),
+      decoration: BoxDecoration(
+        color: isDark ? const Color(0xFF1E293B) : Colors.white,
+        borderRadius: BorderRadius.circular(20),
+        border: Border.all(color: isDark ? Colors.white12 : Colors.grey.shade200),
+        boxShadow: [
+          BoxShadow(
+            color: Colors.black.withValues(alpha: isDark ? 0.2 : 0.05),
+            blurRadius: 15,
+            offset: const Offset(0, 5),
+          ),
+        ],
+      ),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Row(
+            mainAxisAlignment: MainAxisAlignment.spaceBetween,
+            children: [
+              Row(
+                children: [
+                  Container(
+                    padding: const EdgeInsets.all(6),
+                    decoration: BoxDecoration(
+                      color: Colors.indigo.withValues(alpha: 0.12),
+                      borderRadius: BorderRadius.circular(8),
+                    ),
+                    child: const Icon(LucideIcons.truck, size: 16, color: Colors.indigo),
+                  ),
+                  const SizedBox(width: 8),
+                  const Text(
+                    'SHIPPING & COURIER LOGISTICS',
+                    style: TextStyle(fontSize: 12, fontWeight: FontWeight.bold, letterSpacing: 0.8, color: Colors.grey),
+                  ),
+                ],
+              ),
+              Container(
+                padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 3),
+                decoration: BoxDecoration(
+                  color: Colors.indigo.withValues(alpha: 0.1),
+                  borderRadius: BorderRadius.circular(6),
+                  border: Border.all(color: Colors.indigo.withValues(alpha: 0.3)),
+                ),
+                child: Text(
+                  _dispatchStatus,
+                  style: const TextStyle(fontSize: 10, fontWeight: FontWeight.bold, color: Colors.indigo),
+                ),
+              ),
+            ],
+          ),
+          const SizedBox(height: 16),
+
+          // Dispatch Status Selector
+          const Text('Dispatch Status:', style: TextStyle(fontSize: 12, fontWeight: FontWeight.bold, color: Colors.grey)),
+          const SizedBox(height: 6),
+          SingleChildScrollView(
+            scrollDirection: Axis.horizontal,
+            child: Row(
+              children: dispatchStatuses.map((st) {
+                final statusKey = st['status'] as String;
+                final statusLabel = st['label'] as String;
+                final statusColor = st['color'] as Color;
+                final isSelected = _dispatchStatus == statusKey;
+
+                return Padding(
+                  padding: const EdgeInsets.only(right: 8.0),
+                  child: ChoiceChip(
+                    label: Text(
+                      statusLabel,
+                      style: TextStyle(
+                        fontSize: 12,
+                        fontWeight: isSelected ? FontWeight.bold : FontWeight.normal,
+                        color: isSelected ? Colors.white : (isDark ? Colors.white70 : Colors.black87),
+                      ),
+                    ),
+                    selected: isSelected,
+                    selectedColor: statusColor,
+                    backgroundColor: isDark ? const Color(0xFF0F172A) : Colors.grey.shade100,
+                    onSelected: (selected) {
+                      if (selected) {
+                        setState(() {
+                          _dispatchStatus = statusKey;
+                          if (statusKey == 'SHIPPED' && _shippedAt == null) {
+                            _shippedAt = DateTime.now();
+                          }
+                        });
+                      }
+                    },
+                  ),
+                );
+              }).toList(),
+            ),
+          ),
+          const SizedBox(height: 14),
+
+          // Courier Partner & Quick Selection Chips
+          Row(
+            children: [
+              Expanded(
+                child: PremiumTextField(
+                  controller: _courierPartnerCtrl,
+                  labelText: 'Courier Partner (e.g. Delhivery, BlueDart)',
+                  prefixIcon: const Icon(LucideIcons.packageCheck),
+                ),
+              ),
+            ],
+          ),
+          const SizedBox(height: 6),
+          SingleChildScrollView(
+            scrollDirection: Axis.horizontal,
+            child: Row(
+              children: courierSuggestions.map((name) {
+                final isCurrent = _courierPartnerCtrl.text.trim().toLowerCase() == name.toLowerCase();
+                return Padding(
+                  padding: const EdgeInsets.only(right: 6.0),
+                  child: ActionChip(
+                    padding: const EdgeInsets.symmetric(horizontal: 4, vertical: 0),
+                    label: Text(name, style: TextStyle(fontSize: 11, color: isCurrent ? Colors.blue : null)),
+                    backgroundColor: isCurrent ? Colors.blue.withValues(alpha: 0.15) : null,
+                    onPressed: () {
+                      setState(() {
+                        _courierPartnerCtrl.text = name;
+                      });
+                    },
+                  ),
+                );
+              }).toList(),
+            ),
+          ),
+          const SizedBox(height: 14),
+
+          // AWB / Tracking Number with Scanner Button
+          Row(
+            children: [
+              Expanded(
+                child: PremiumTextField(
+                  controller: _trackingNumberCtrl,
+                  labelText: 'AWB / Tracking Number',
+                  prefixIcon: const Icon(LucideIcons.barcode),
+                ),
+              ),
+              const SizedBox(width: 8),
+              IconButton.filledTonal(
+                icon: const Icon(LucideIcons.scanLine),
+                tooltip: 'Scan AWB Barcode',
+                onPressed: _scanTrackingBarcode,
+              ),
+            ],
+          ),
+          const SizedBox(height: 14),
+
+          // Delivery Address Toggle & Form
+          CheckboxListTile(
+            contentPadding: EdgeInsets.zero,
+            dense: true,
+            title: const Text('Deliver to customer billing address', style: TextStyle(fontWeight: FontWeight.w600)),
+            subtitle: Text(
+              customer?.address != null && customer!.address!.isNotEmpty
+                  ? customer.address!
+                  : 'Customer address on file',
+              style: TextStyle(fontSize: 11, color: Colors.grey.shade600),
+              maxLines: 1,
+              overflow: TextOverflow.ellipsis,
+            ),
+            value: _sameAsCustomerAddress,
+            onChanged: (val) {
+              setState(() => _sameAsCustomerAddress = val ?? true);
+            },
+          ),
+          if (!_sameAsCustomerAddress) ...[
+            const SizedBox(height: 8),
+            PremiumTextField(
+              controller: _shippingAddressCtrl,
+              labelText: 'Shipping / Delivery Address',
+              maxLines: 2,
+              prefixIcon: const Icon(LucideIcons.mapPin),
+            ),
+            const SizedBox(height: 10),
+            PremiumTextField(
+              controller: _shippingPincodeCtrl,
+              labelText: 'Shipping Pincode',
+              keyboardType: TextInputType.number,
+              prefixIcon: const Icon(LucideIcons.hash),
+            ),
+          ],
+        ],
+      ),
+    );
+  }
 }
 
 class _AddSalesItemSheet extends ConsumerStatefulWidget {

kifi-app/lib/features/sales/presentation/invoice_details_screen.dart

@@ -18,9 +18,16 @@ import '../domain/invoice.dart';
 import '../providers/invoices_provider.dart';
 import '../providers/customers_provider.dart';
 import '../../business/providers/business_provider.dart';
+import '../../business/providers/indian_states_provider.dart';
 import '../../transactions/presentation/widgets/attachment_gallery_screen.dart';
 import '../../../core/network/dio_client.dart';
 import 'widgets/receive_payment_sheet.dart';
+import 'widgets/create_credit_note_sheet.dart';
+import 'widgets/settle_marketplace_order_sheet.dart';
+import 'credit_notes_list_screen.dart';
+import 'marketplace_settlements_screen.dart';
+import '../providers/credit_notes_provider.dart';
+import '../providers/marketplace_settlements_provider.dart';
 import 'invoice_builder_screen.dart';
 
 bool _isCommodityProduct({
@@ -533,19 +540,239 @@ class _InvoiceDetailsScreenState extends ConsumerState<InvoiceDetailsScreen> {
                   const SizedBox(height: 20),
                 ],
 
-                // Bottom Action: Receive Payment if balance due
-                if (remaining > 0)
-                  ElevatedButton.icon(
-                    onPressed: () => _showReceivePaymentSheet(context, ref, latestInvoice),
-                    icon: const Icon(LucideIcons.plusCircle, size: 18),
-                    label: const Text('Record Payment', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 16)),
-                    style: ElevatedButton.styleFrom(
-                      padding: const EdgeInsets.symmetric(vertical: 16),
-                      backgroundColor: Colors.green,
-                      foregroundColor: Colors.white,
-                      shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
-                    ),
+                // Credit Notes / Returns associated with this Invoice
+                if (latestInvoice.id != null) ...[
+                  ref.watch(invoiceCreditNotesProvider(latestInvoice.id!)).when(
+                    data: (cns) {
+                      if (cns.isEmpty) return const SizedBox.shrink();
+                      return Column(
+                        crossAxisAlignment: CrossAxisAlignment.start,
+                        children: [
+                          const Text('Returns & Credit Notes Issued', style: TextStyle(fontSize: 16, fontWeight: FontWeight.bold)),
+                          const SizedBox(height: 8),
+                          ...cns.map((cn) {
+                            return Container(
+                              margin: const EdgeInsets.only(bottom: 8),
+                              padding: const EdgeInsets.all(12),
+                              decoration: BoxDecoration(
+                                color: Colors.red.withValues(alpha: isDark ? 0.1 : 0.05),
+                                borderRadius: BorderRadius.circular(12),
+                                border: Border.all(color: Colors.red.withValues(alpha: 0.25)),
+                              ),
+                              child: Row(
+                                mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                                children: [
+                                  Row(
+                                    children: [
+                                      const Icon(LucideIcons.undo2, color: Colors.red, size: 16),
+                                      const SizedBox(width: 8),
+                                      Column(
+                                        crossAxisAlignment: CrossAxisAlignment.start,
+                                        children: [
+                                          Text(
+                                            'Credit Note #${cn.creditNoteNumber}',
+                                            style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 13),
+                                          ),
+                                          Text(
+                                            '${cn.reason.replaceAll("_", " ")} • ${formatDate.format(cn.returnDate)}',
+                                            style: TextStyle(fontSize: 11, color: Colors.grey.shade600),
+                                          ),
+                                        ],
+                                      ),
+                                    ],
+                                  ),
+                                  Text(
+                                    formatCurrency.format(cn.totalAmount),
+                                    style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 14, color: Colors.red),
+                                  ),
+                                ],
+                              ),
+                            );
+                          }),
+                          const SizedBox(height: 16),
+                        ],
+                      );
+                    },
+                    loading: () => const SizedBox.shrink(),
+                    error: (_, __) => const SizedBox.shrink(),
                   ),
+                ],
+
+                // Marketplace Settlement Breakdown Card (if settled)
+                if (latestInvoice.id != null) ...[
+                  ref.watch(invoiceSettlementProvider(latestInvoice.id!)).when(
+                    data: (settlement) {
+                      if (settlement == null) return const SizedBox.shrink();
+                      return Column(
+                        crossAxisAlignment: CrossAxisAlignment.start,
+                        children: [
+                          Row(
+                            mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                            children: [
+                              const Text('Marketplace Settlement & Payout', style: TextStyle(fontSize: 16, fontWeight: FontWeight.bold)),
+                              Container(
+                                padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 3),
+                                decoration: BoxDecoration(
+                                  color: const Color(0xFF10B981).withValues(alpha: 0.12),
+                                  borderRadius: BorderRadius.circular(6),
+                                ),
+                                child: const Row(
+                                  children: [
+                                    Icon(LucideIcons.checkCheck, size: 12, color: Color(0xFF10B981)),
+                                    SizedBox(width: 4),
+                                    Text('Reconciled', style: TextStyle(fontSize: 11, fontWeight: FontWeight.bold, color: Color(0xFF10B981))),
+                                  ],
+                                ),
+                              ),
+                            ],
+                          ),
+                          const SizedBox(height: 8),
+                          Container(
+                            padding: const EdgeInsets.all(14),
+                            decoration: BoxDecoration(
+                              color: isDark ? const Color(0xFF1E293B) : Colors.white,
+                              borderRadius: BorderRadius.circular(14),
+                              border: Border.all(color: isDark ? Colors.white10 : Colors.grey.shade200),
+                            ),
+                            child: Column(
+                              children: [
+                                Row(
+                                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                                  children: [
+                                    Text('${settlement.channelName ?? "Marketplace"} Remittance', style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 13)),
+                                    Text(formatDate.format(settlement.settlementDate), style: TextStyle(fontSize: 12, color: Colors.grey.shade600)),
+                                  ],
+                                ),
+                                if (settlement.settlementRef != null) ...[
+                                  const SizedBox(height: 4),
+                                  Row(
+                                    children: [
+                                      const Icon(LucideIcons.hash, size: 12, color: Colors.grey),
+                                      const SizedBox(width: 4),
+                                      Text('Bank UTR: ${settlement.settlementRef}', style: TextStyle(fontSize: 11, color: Colors.grey.shade600)),
+                                    ],
+                                  ),
+                                ],
+                                const Divider(height: 16),
+                                _buildSummaryRow('Gross Sale Value', formatCurrency.format(settlement.grossAmount)),
+                                if (settlement.commissionFee > 0)
+                                  _buildSummaryRow('Referral / Commission Fee', '- ${formatCurrency.format(settlement.commissionFee)}', color: Colors.red),
+                                if (settlement.shippingFee > 0)
+                                  _buildSummaryRow('Logistics / Shipping Fee', '- ${formatCurrency.format(settlement.shippingFee)}', color: Colors.red),
+                                if (settlement.otherFees > 0)
+                                  _buildSummaryRow('Closing / Fixed Fees', '- ${formatCurrency.format(settlement.otherFees)}', color: Colors.red),
+                                if (settlement.feeGst > 0)
+                                  _buildSummaryRow('GST on Marketplace Fees (18%)', '- ${formatCurrency.format(settlement.feeGst)}', color: Colors.red),
+                                if (settlement.tcsGstAmount > 0)
+                                  _buildSummaryRow('GST TCS Withheld (1%)', '- ${formatCurrency.format(settlement.tcsGstAmount)}', color: Colors.red),
+                                if (settlement.tdsAmount > 0)
+                                  _buildSummaryRow('TDS u/s 194O Withheld (0.1%)', '- ${formatCurrency.format(settlement.tdsAmount)}', color: Colors.red),
+                                const Divider(height: 16),
+                                Row(
+                                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                                  children: [
+                                    const Text('Net Bank Remittance Payout:', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 13)),
+                                    Text(
+                                      formatCurrency.format(settlement.netPayoutAmount),
+                                      style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 16, color: Color(0xFF10B981)),
+                                    ),
+                                  ],
+                                ),
+                              ],
+                            ),
+                          ),
+                          const SizedBox(height: 16),
+                        ],
+                      );
+                    },
+                    loading: () => const SizedBox.shrink(),
+                    error: (_, __) => const SizedBox.shrink(),
+                  ),
+                ],
+
+                // Action Buttons Row: Settle Marketplace Payout / Record Payment & Process Return
+                Row(
+                  children: [
+                    if (latestInvoice.status != 'RETURNED') ...[
+                      Expanded(
+                        child: OutlinedButton.icon(
+                          onPressed: () async {
+                            final result = await showModalBottomSheet(
+                              context: context,
+                              isScrollControlled: true,
+                              shape: const RoundedRectangleBorder(
+                                borderRadius: BorderRadius.vertical(top: Radius.circular(24)),
+                              ),
+                              builder: (_) => CreateCreditNoteSheet(invoice: latestInvoice),
+                            );
+                            if (result != null) {
+                              ref.refresh(invoicesProvider);
+                              if (latestInvoice.id != null) {
+                                ref.refresh(invoiceCreditNotesProvider(latestInvoice.id!));
+                              }
+                            }
+                          },
+                          icon: const Icon(LucideIcons.undo2, size: 16, color: Colors.red),
+                          label: const Text('Return / Credit Note', style: TextStyle(color: Colors.red, fontWeight: FontWeight.bold, fontSize: 13)),
+                          style: OutlinedButton.styleFrom(
+                            padding: const EdgeInsets.symmetric(vertical: 14),
+                            side: BorderSide(color: Colors.red.shade300),
+                            shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
+                          ),
+                        ),
+                      ),
+                      const SizedBox(width: 10),
+                    ],
+                    if (remaining > 0) ...[
+                      if (latestInvoice.salesChannel != null &&
+                          latestInvoice.salesChannel!.toUpperCase() != 'DIRECT_POS' &&
+                          latestInvoice.salesChannel!.toUpperCase() != 'STORE') ...[
+                        Expanded(
+                          child: ElevatedButton.icon(
+                            onPressed: () async {
+                              final result = await showModalBottomSheet(
+                                context: context,
+                                isScrollControlled: true,
+                                shape: const RoundedRectangleBorder(
+                                  borderRadius: BorderRadius.vertical(top: Radius.circular(24)),
+                                ),
+                                builder: (_) => SettleMarketplaceOrderSheet(invoice: latestInvoice),
+                              );
+                              if (result != null) {
+                                ref.refresh(invoicesProvider);
+                                if (latestInvoice.id != null) {
+                                  ref.refresh(invoiceSettlementProvider(latestInvoice.id!));
+                                }
+                              }
+                            },
+                            icon: const Icon(LucideIcons.landmark, size: 16),
+                            label: const Text('Settle Payout', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 13)),
+                            style: ElevatedButton.styleFrom(
+                              padding: const EdgeInsets.symmetric(vertical: 14),
+                              backgroundColor: const Color(0xFF10B981),
+                              foregroundColor: Colors.white,
+                              shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
+                            ),
+                          ),
+                        ),
+                      ] else ...[
+                        Expanded(
+                          child: ElevatedButton.icon(
+                            onPressed: () => _showReceivePaymentSheet(context, ref, latestInvoice),
+                            icon: const Icon(LucideIcons.plusCircle, size: 16),
+                            label: const Text('Record Payment', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 13)),
+                            style: ElevatedButton.styleFrom(
+                              padding: const EdgeInsets.symmetric(vertical: 14),
+                              backgroundColor: Colors.green,
+                              foregroundColor: Colors.white,
+                              shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
+                            ),
+                          ),
+                        ),
+                      ],
+                    ],
+                  ],
+                ),
                 const SizedBox(height: 30),
               ],
             ),
@@ -555,6 +782,23 @@ class _InvoiceDetailsScreenState extends ConsumerState<InvoiceDetailsScreen> {
     );
   }
 
+  Color _getDispatchColor(String? status) {
+    switch (status?.toUpperCase()) {
+      case 'DELIVERED':
+        return Colors.green;
+      case 'SHIPPED':
+      case 'IN_TRANSIT':
+        return Colors.indigo;
+      case 'PACKED':
+        return Colors.blue;
+      case 'RTO':
+        return Colors.red;
+      case 'PENDING':
+      default:
+        return Colors.grey;
+    }
+  }
+
   Widget _buildDetailBadge(String text, Color color) {
     return Container(
       padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 2),
@@ -656,7 +900,9 @@ class _InvoiceDetailsScreenState extends ConsumerState<InvoiceDetailsScreen> {
 
       await Share.shareXFiles([XFile(imagePath.path)], text: 'Invoice $invoiceNumber');
     } catch (e) {
-      if (mounted) ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('Error sharing image: $e')));
+      if (mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('Error sharing image: $e')));
+      }
     }
   }
 
@@ -668,31 +914,28 @@ class _InvoiceDetailsScreenState extends ConsumerState<InvoiceDetailsScreen> {
         orElse: () => widget.invoice,
       ) ?? widget.invoice;
 
+      final pdf = pw.Document();
+      final business = ref.read(businessProfileProvider).value;
       final customers = ref.read(customersProvider).value ?? [];
       final customer = customers.where((c) => c.id == latestInvoice.customerId).firstOrNull;
-
-      final business = ref.read(businessProfileProvider).value;
       final products = ref.read(productsProvider).value ?? [];
       final categories = ref.read(productCategoriesProvider).value ?? [];
       final uoms = ref.read(uomsProvider).value ?? [];
+      final indianStates = ref.read(indianStatesProvider).value ?? [];
+
+      final businessState = indianStates.where((s) => s.id == business?.stateId).firstOrNull;
+      final customerState = indianStates.where((s) => s.id == (latestInvoice.placeOfSupplyStateId ?? customer?.stateId)).firstOrNull;
+
+      final isSameState = businessState != null && customerState != null && businessState.id == customerState.id;
 
-      final formatCurrency = NumberFormat.currency(symbol: 'Rs. ', decimalDigits: 2);
       final formatDate = DateFormat('dd MMM yyyy');
+      final formatCurrency = NumberFormat.currency(symbol: 'Rs. ', decimalDigits: 2);
 
-      final font = await PdfGoogleFonts.robotoRegular();
-      final boldFont = await PdfGoogleFonts.robotoBold();
-
-      final businessStateId = business?.stateId;
-      final customerStateId = customer?.stateId;
-      final isSameState = businessStateId != null && customerStateId != null
-          ? (businessStateId == customerStateId)
-          : true;
-
-      // Group items by product ID if available, or itemize
+      // Group items by productId
       final Map<int, List<InvoiceItem>> groupedItems = {};
       final List<InvoiceItem> ungroupedItems = [];
 
-      for (final item in latestInvoice.items) {
+      for (var item in latestInvoice.items) {
         if (item.productId != null) {
           groupedItems.putIfAbsent(item.productId!, () => []).add(item);
         } else {
@@ -700,96 +943,64 @@ class _InvoiceDetailsScreenState extends ConsumerState<InvoiceDetailsScreen> {
         }
       }
 
-      final pdf = pw.Document();
-
       pdf.addPage(
         pw.MultiPage(
           pageFormat: PdfPageFormat.a4,
-          theme: pw.ThemeData.withFont(
-            base: font,
-            bold: boldFont,
-          ),
-          margin: const pw.EdgeInsets.all(28),
-          build: (pw.Context context) {
-            return [
-              // 1. Header with Business Details & TAX INVOICE title
-              pw.Row(
-                mainAxisAlignment: pw.MainAxisAlignment.spaceBetween,
-                crossAxisAlignment: pw.CrossAxisAlignment.start,
-                children: [
-                  pw.Expanded(
-                    child: pw.Column(
-                      crossAxisAlignment: pw.CrossAxisAlignment.start,
-                      children: [
-                        pw.Text(
-                          business?.businessName ?? 'KIFI JEWELLERS',
-                          style: pw.TextStyle(
-                            fontSize: 22,
-                            fontWeight: pw.FontWeight.bold,
-                            color: PdfColors.blue900,
-                          ),
-                        ),
-                        pw.SizedBox(height: 4),
-                        if (business?.address != null && business!.address!.isNotEmpty)
+          margin: const pw.EdgeInsets.all(32),
+          build: (context) => [
+            pw.Column(
+              crossAxisAlignment: pw.CrossAxisAlignment.start,
+              children: [
+                // 1. Enterprise Invoice Header
+                pw.Row(
+                  mainAxisAlignment: pw.MainAxisAlignment.spaceBetween,
+                  crossAxisAlignment: pw.CrossAxisAlignment.start,
+                  children: [
+                    pw.Expanded(
+                      child: pw.Column(
+                        crossAxisAlignment: pw.CrossAxisAlignment.start,
+                        children: [
                           pw.Text(
-                            business.address!,
-                            style: const pw.TextStyle(fontSize: 9, color: PdfColors.grey700),
-                          ),
-                        if (business?.contactNumber != null && business!.contactNumber!.isNotEmpty)
-                          pw.Text(
-                            'Phone: ${business.contactNumber}',
-                            style: const pw.TextStyle(fontSize: 9, color: PdfColors.grey700),
-                          ),
-                        if (business?.gstin != null && business!.gstin!.isNotEmpty)
-                          pw.Text(
-                            'GSTIN: ${business.gstin}',
+                            business?.businessName ?? 'KIFI ENTERPRISE',
                             style: pw.TextStyle(
-                              fontSize: 9,
+                              fontSize: 18,
                               fontWeight: pw.FontWeight.bold,
-                              color: PdfColors.blue800,
+                              color: PdfColors.blue900,
                             ),
                           ),
-                      ],
+                          if (business?.address != null && business!.address!.isNotEmpty)
+                            pw.Text(
+                              business.address!,
+                              style: const pw.TextStyle(fontSize: 9, color: PdfColors.grey700),
+                            ),
+                          if (business?.contactNumber != null && business!.contactNumber!.isNotEmpty)
+                            pw.Text(
+                              'Phone: ${business.contactNumber}',
+                              style: const pw.TextStyle(fontSize: 9, color: PdfColors.grey700),
+                            ),
+                          if (business?.gstin != null && business!.gstin!.isNotEmpty)
+                            pw.Text(
+                              'GSTIN: ${business.gstin}',
+                              style: pw.TextStyle(
+                                fontSize: 9,
+                                fontWeight: pw.FontWeight.bold,
+                                color: PdfColors.blue800,
+                              ),
+                            ),
+                        ],
+                      ),
                     ),
-                  ),
                   pw.Column(
                     crossAxisAlignment: pw.CrossAxisAlignment.end,
                     children: [
                       pw.Text(
                         'TAX INVOICE',
                         style: pw.TextStyle(
-                          fontSize: 22,
+                          fontSize: 18,
                           fontWeight: pw.FontWeight.bold,
                           color: PdfColors.blue900,
                         ),
                       ),
-                      pw.SizedBox(height: 6),
-                      pw.Container(
-                        padding: const pw.EdgeInsets.symmetric(horizontal: 8, vertical: 3),
-                        decoration: pw.BoxDecoration(
-                          color: _getEffectiveStatus(latestInvoice) == 'PAID'
-                              ? PdfColors.green100
-                              : (_getEffectiveStatus(latestInvoice) == 'PARTIAL' ? PdfColors.orange100 : PdfColors.grey200),
-                          borderRadius: const pw.BorderRadius.all(pw.Radius.circular(4)),
-                          border: pw.Border.all(
-                            color: _getEffectiveStatus(latestInvoice) == 'PAID'
-                                ? PdfColors.green700
-                                : (_getEffectiveStatus(latestInvoice) == 'PARTIAL' ? PdfColors.orange700 : PdfColors.grey500),
-                            width: 0.5,
-                          ),
-                        ),
-                        child: pw.Text(
-                          _getEffectiveStatus(latestInvoice),
-                          style: pw.TextStyle(
-                            fontSize: 9,
-                            fontWeight: pw.FontWeight.bold,
-                            color: _getEffectiveStatus(latestInvoice) == 'PAID'
-                                ? PdfColors.green900
-                                : (_getEffectiveStatus(latestInvoice) == 'PARTIAL' ? PdfColors.orange900 : PdfColors.grey800),
-                          ),
-                        ),
-                      ),
-                      pw.SizedBox(height: 6),
                       pw.Text(
                         'Invoice #: ${latestInvoice.invoiceNumber}',
                         style: pw.TextStyle(fontSize: 11, fontWeight: pw.FontWeight.bold),
@@ -798,6 +1009,21 @@ class _InvoiceDetailsScreenState extends ConsumerState<InvoiceDetailsScreen> {
                         'Date: ${formatDate.format(latestInvoice.issueDate)}',
                         style: const pw.TextStyle(fontSize: 9, color: PdfColors.grey700),
                       ),
+                      if (latestInvoice.salesChannel != null && latestInvoice.salesChannel!.isNotEmpty)
+                        pw.Text(
+                          'Channel: ${latestInvoice.salesChannel!}',
+                          style: pw.TextStyle(fontSize: 9, fontWeight: pw.FontWeight.bold, color: PdfColors.blue900),
+                        ),
+                      if (latestInvoice.marketplaceOrderId != null && latestInvoice.marketplaceOrderId!.isNotEmpty)
+                        pw.Text(
+                          'Order Ref: #${latestInvoice.marketplaceOrderId!}',
+                          style: const pw.TextStyle(fontSize: 8.5, color: PdfColors.grey700),
+                        ),
+                      if (latestInvoice.courierPartner != null || latestInvoice.trackingNumber != null)
+                        pw.Text(
+                          'Courier: ${latestInvoice.courierPartner ?? ""}${latestInvoice.trackingNumber != null ? " (AWB: ${latestInvoice.trackingNumber})" : ""}',
+                          style: const pw.TextStyle(fontSize: 8.5, color: PdfColors.grey700),
+                        ),
                       if (latestInvoice.dueDate != null)
                         pw.Text(
                           'Due Date: ${formatDate.format(latestInvoice.dueDate!)}',
@@ -809,7 +1035,7 @@ class _InvoiceDetailsScreenState extends ConsumerState<InvoiceDetailsScreen> {
               ),
               pw.SizedBox(height: 18),
 
-              // 2. Bill To Box (Customer Details)
+              // 2. Bill To & Ship To Box (Customer & Delivery Details)
               pw.Container(
                 padding: const pw.EdgeInsets.all(10),
                 decoration: pw.BoxDecoration(
@@ -836,7 +1062,7 @@ class _InvoiceDetailsScreenState extends ConsumerState<InvoiceDetailsScreen> {
                           pw.Text(
                             customer?.name ?? 'Walk-in Customer',
                             style: pw.TextStyle(
-                              fontSize: 12,
+                              fontSize: 11,
                               fontWeight: pw.FontWeight.bold,
                             ),
                           ),
@@ -852,6 +1078,38 @@ class _InvoiceDetailsScreenState extends ConsumerState<InvoiceDetailsScreen> {
                         ],
                       ),
                     ),
+                    if (latestInvoice.shippingAddress != null && latestInvoice.shippingAddress!.isNotEmpty) ...[
+                      pw.SizedBox(width: 14),
+                      pw.Expanded(
+                        child: pw.Column(
+                          crossAxisAlignment: pw.CrossAxisAlignment.start,
+                          children: [
+                            pw.Text(
+                              'SHIP TO (DELIVERY):',
+                              style: pw.TextStyle(
+                                fontSize: 8.5,
+                                fontWeight: pw.FontWeight.bold,
+                                color: PdfColors.grey700,
+                              ),
+                            ),
+                            pw.SizedBox(height: 2),
+                            pw.Text(
+                              customer?.name ?? 'Recipient',
+                              style: pw.TextStyle(
+                                fontSize: 11,
+                                fontWeight: pw.FontWeight.bold,
+                              ),
+                            ),
+                            pw.Text(
+                              latestInvoice.shippingAddress! + (latestInvoice.shippingPincode != null ? ' - ${latestInvoice.shippingPincode}' : ''),
+                              style: const pw.TextStyle(fontSize: 9),
+                            ),
+                            if (latestInvoice.courierPartner != null)
+                              pw.Text('Via: ${latestInvoice.courierPartner}', style: const pw.TextStyle(fontSize: 8.5, color: PdfColors.grey700)),
+                          ],
+                        ),
+                      ),
+                    ],
                   ],
                 ),
               ),
@@ -1421,10 +1679,11 @@ class _InvoiceDetailsScreenState extends ConsumerState<InvoiceDetailsScreen> {
                   ),
                 ],
               ),
-            ];
-          },
-        ),
-      );
+            ],
+          ),
+        ],
+      ),
+    );
 
       final pdfBytes = await pdf.save();
 

kifi-app/lib/features/sales/presentation/invoices_list_screen.dart

@@ -5,8 +5,11 @@ import 'package:intl/intl.dart';
 import '../providers/invoices_provider.dart';
 import '../domain/invoice.dart';
 import '../providers/customers_provider.dart';
+import '../providers/sales_channels_provider.dart';
 import 'invoice_builder_screen.dart';
 import 'invoice_details_screen.dart';
+import 'credit_notes_list_screen.dart';
+import 'marketplace_settlements_screen.dart';
 
 class InvoicesListScreen extends ConsumerStatefulWidget {
   const InvoicesListScreen({super.key});
@@ -18,6 +21,8 @@ class InvoicesListScreen extends ConsumerStatefulWidget {
 class _InvoicesListScreenState extends ConsumerState<InvoicesListScreen> {
   String _searchQuery = '';
   final TextEditingController _searchController = TextEditingController();
+  String? _selectedChannelFilter;
+  String? _selectedDispatchStatusFilter;
 
   String _getStatusLabel(Invoice invoice) {
     if (invoice.isEmi && invoice.status != 'PAID') return 'EMI';
@@ -47,6 +52,23 @@ class _InvoicesListScreenState extends ConsumerState<InvoicesListScreen> {
     }
   }
 
+  Color _getDispatchStatusColor(String? status) {
+    switch (status?.toUpperCase()) {
+      case 'DELIVERED':
+        return Colors.green;
+      case 'SHIPPED':
+      case 'IN_TRANSIT':
+        return Colors.indigo;
+      case 'PACKED':
+        return Colors.blue;
+      case 'RTO':
+        return Colors.red;
+      case 'PENDING':
+      default:
+        return Colors.grey;
+    }
+  }
+
   @override
   void dispose() {
     _searchController.dispose();
@@ -57,6 +79,7 @@ class _InvoicesListScreenState extends ConsumerState<InvoicesListScreen> {
   Widget build(BuildContext context) {
     final invoicesState = ref.watch(invoicesProvider);
     final customersState = ref.watch(customersProvider);
+    final channelsState = ref.watch(salesChannelsProvider);
     final isDark = Theme.of(context).brightness == Brightness.dark;
     final formatCurrency = NumberFormat.currency(symbol: '₹');
     final formatDate = DateFormat('MMM dd, yyyy');
@@ -72,38 +95,121 @@ class _InvoicesListScreenState extends ConsumerState<InvoicesListScreen> {
         backgroundColor: isDark ? const Color(0xFF1E293B) : Colors.white,
         foregroundColor: isDark ? Colors.white : Colors.black,
         centerTitle: true,
+        actions: [
+          IconButton(
+            icon: const Icon(LucideIcons.landmark),
+            tooltip: 'Marketplace Settlements & Fees',
+            onPressed: () {
+              Navigator.push(
+                context,
+                MaterialPageRoute(builder: (_) => const MarketplaceSettlementsScreen()),
+              );
+            },
+          ),
+          IconButton(
+            icon: const Icon(LucideIcons.undo2),
+            tooltip: 'Sales Returns & Credit Notes',
+            onPressed: () {
+              Navigator.push(
+                context,
+                MaterialPageRoute(builder: (_) => const CreditNotesListScreen()),
+              );
+            },
+          ),
+        ],
       ),
       body: Column(
         children: [
           // Unified Search Header
           Container(
             color: isDark ? const Color(0xFF1E293B) : Colors.white,
-            padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
-            child: TextField(
-              controller: _searchController,
-              decoration: InputDecoration(
-                hintText: 'Search Invoice # or Customer...',
-                prefixIcon: const Icon(LucideIcons.search, color: Colors.grey),
-                contentPadding: const EdgeInsets.symmetric(vertical: 14),
-                border: OutlineInputBorder(
-                  borderRadius: BorderRadius.circular(12),
-                  borderSide: BorderSide(color: isDark ? Colors.white12 : Colors.grey.shade300),
+            padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 10),
+            child: Column(
+              children: [
+                TextField(
+                  controller: _searchController,
+                  decoration: InputDecoration(
+                    hintText: 'Search Invoice #, Order ID, Customer, Courier...',
+                    prefixIcon: const Icon(LucideIcons.search, color: Colors.grey),
+                    contentPadding: const EdgeInsets.symmetric(vertical: 12),
+                    border: OutlineInputBorder(
+                      borderRadius: BorderRadius.circular(12),
+                      borderSide: BorderSide(color: isDark ? Colors.white12 : Colors.grey.shade300),
+                    ),
+                    enabledBorder: OutlineInputBorder(
+                      borderRadius: BorderRadius.circular(12),
+                      borderSide: BorderSide(color: isDark ? Colors.white12 : Colors.grey.shade300),
+                    ),
+                    suffixIcon: _searchQuery.isNotEmpty
+                        ? IconButton(
+                            icon: const Icon(LucideIcons.xCircle, size: 20),
+                            onPressed: () {
+                              _searchController.clear();
+                              setState(() => _searchQuery = '');
+                            },
+                          )
+                        : null,
+                  ),
+                  onChanged: (val) => setState(() => _searchQuery = val.trim()),
                 ),
-                enabledBorder: OutlineInputBorder(
-                  borderRadius: BorderRadius.circular(12),
-                  borderSide: BorderSide(color: isDark ? Colors.white12 : Colors.grey.shade300),
+                const SizedBox(height: 8),
+
+                // Channel Filter Bar
+                SingleChildScrollView(
+                  scrollDirection: Axis.horizontal,
+                  child: Row(
+                    children: [
+                      Padding(
+                        padding: const EdgeInsets.only(right: 6.0),
+                        child: FilterChip(
+                          label: const Text('All Channels', style: TextStyle(fontSize: 11)),
+                          selected: _selectedChannelFilter == null,
+                          onSelected: (selected) {
+                            if (selected) setState(() => _selectedChannelFilter = null);
+                          },
+                        ),
+                      ),
+                      ...(channelsState.value ?? []).map((channel) {
+                        final isSelected = _selectedChannelFilter?.toLowerCase() == channel.name.toLowerCase();
+                        return Padding(
+                          padding: const EdgeInsets.only(right: 6.0),
+                          child: FilterChip(
+                            label: Text(channel.name, style: const TextStyle(fontSize: 11)),
+                            selected: isSelected,
+                            onSelected: (selected) {
+                              setState(() => _selectedChannelFilter = selected ? channel.name : null);
+                            },
+                          ),
+                        );
+                      }),
+                      const SizedBox(width: 8),
+                      // Quick Dispatch Status filters
+                      Padding(
+                        padding: const EdgeInsets.only(right: 6.0),
+                        child: FilterChip(
+                          label: const Text('Shipped / In Transit', style: TextStyle(fontSize: 11)),
+                          selected: _selectedDispatchStatusFilter == 'SHIPPED',
+                          selectedColor: Colors.indigo.withValues(alpha: 0.2),
+                          onSelected: (selected) {
+                            setState(() => _selectedDispatchStatusFilter = selected ? 'SHIPPED' : null);
+                          },
+                        ),
+                      ),
+                      Padding(
+                        padding: const EdgeInsets.only(right: 6.0),
+                        child: FilterChip(
+                          label: const Text('Delivered', style: TextStyle(fontSize: 11)),
+                          selected: _selectedDispatchStatusFilter == 'DELIVERED',
+                          selectedColor: Colors.green.withValues(alpha: 0.2),
+                          onSelected: (selected) {
+                            setState(() => _selectedDispatchStatusFilter = selected ? 'DELIVERED' : null);
+                          },
+                        ),
+                      ),
+                    ],
+                  ),
                 ),
-                suffixIcon: _searchQuery.isNotEmpty
-                    ? IconButton(
-                        icon: const Icon(LucideIcons.xCircle, size: 20),
-                        onPressed: () {
-                          _searchController.clear();
-                          setState(() => _searchQuery = '');
-                        },
-                      )
-                    : null,
-              ),
-              onChanged: (val) => setState(() => _searchQuery = val.trim()),
+              ],
             ),
           ),
           Expanded(
@@ -111,10 +217,22 @@ class _InvoicesListScreenState extends ConsumerState<InvoicesListScreen> {
               data: (invoices) {
                 final customers = customersState.value ?? [];
                 final filtered = invoices.where((inv) {
-                  final matchesInv = inv.invoiceNumber.toLowerCase().contains(_searchQuery.toLowerCase());
+                  final q = _searchQuery.toLowerCase();
+                  final matchesInv = inv.invoiceNumber.toLowerCase().contains(q);
+                  final matchesOrder = inv.marketplaceOrderId != null && inv.marketplaceOrderId!.toLowerCase().contains(q);
+                  final matchesCourier = inv.courierPartner != null && inv.courierPartner!.toLowerCase().contains(q);
+                  final matchesAwb = inv.trackingNumber != null && inv.trackingNumber!.toLowerCase().contains(q);
                   final customer = customers.where((c) => c.id == inv.customerId).firstOrNull;
-                  final matchesCust = customer != null && customer.name.toLowerCase().contains(_searchQuery.toLowerCase());
-                  return matchesInv || matchesCust;
+                  final matchesCust = customer != null && customer.name.toLowerCase().contains(q);
+                  final matchesSearch = q.isEmpty || matchesInv || matchesOrder || matchesCust || matchesCourier || matchesAwb;
+
+                  final matchesChannel = _selectedChannelFilter == null ||
+                      (inv.salesChannel != null && inv.salesChannel!.toLowerCase() == _selectedChannelFilter!.toLowerCase());
+
+                  final matchesDispatch = _selectedDispatchStatusFilter == null ||
+                      (inv.dispatchStatus != null && inv.dispatchStatus!.toUpperCase() == _selectedDispatchStatusFilter!.toUpperCase());
+
+                  return matchesSearch && matchesChannel && matchesDispatch;
                 }).toList();
 
                 if (filtered.isEmpty) {
@@ -226,6 +344,21 @@ class _InvoicesListScreenState extends ConsumerState<InvoicesListScreen> {
                                                 ),
                                               ),
                                             ],
+                                            if (invoice.marketplaceOrderId != null && invoice.marketplaceOrderId!.isNotEmpty) ...[
+                                              const SizedBox(width: 6),
+                                              Container(
+                                                padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 2),
+                                                decoration: BoxDecoration(
+                                                  color: Colors.purple.withValues(alpha: 0.1),
+                                                  borderRadius: BorderRadius.circular(6),
+                                                  border: Border.all(color: Colors.purple.withValues(alpha: 0.25)),
+                                                ),
+                                                child: Text(
+                                                  '#${invoice.marketplaceOrderId!}',
+                                                  style: TextStyle(fontSize: 10.5, fontWeight: FontWeight.bold, color: Colors.purple.shade700),
+                                                ),
+                                              ),
+                                            ],
                                           ],
                                         ),
                                       ),
@@ -294,12 +427,16 @@ class _InvoicesListScreenState extends ConsumerState<InvoicesListScreen> {
                                             final weightStr = item.weight != null && item.weight! > 0
                                                 ? '${item.weight!.toStringAsFixed(3)} g'
                                                 : '${item.quantity.toInt()} pcs';
-                                            final name = item.productName ?? item.description ?? 'Jewellery Item';
+                                            final name = item.productName ?? item.description ?? 'Item';
                                             return Padding(
                                               padding: const EdgeInsets.symmetric(vertical: 2.0),
                                               child: Row(
                                                 children: [
-                                                  Icon(LucideIcons.sparkles, size: 12, color: Colors.amber.shade700),
+                                                  Icon(
+                                                    item.weight != null && item.weight! > 0 ? LucideIcons.sparkles : LucideIcons.package,
+                                                    size: 12,
+                                                    color: item.weight != null && item.weight! > 0 ? Colors.amber.shade700 : Colors.blue.shade700,
+                                                  ),
                                                   const SizedBox(width: 6),
                                                   Expanded(
                                                     child: Text(
@@ -329,6 +466,41 @@ class _InvoicesListScreenState extends ConsumerState<InvoicesListScreen> {
                                       ),
                                     ),
                                   ],
+
+                                  // Logistics / Shipping Tracker Row (if set)
+                                  if (invoice.courierPartner != null || invoice.trackingNumber != null || (invoice.dispatchStatus != null && invoice.dispatchStatus != 'PENDING')) ...[
+                                    const SizedBox(height: 8),
+                                    Row(
+                                      children: [
+                                        Icon(LucideIcons.truck, size: 14, color: Colors.indigo.shade600),
+                                        const SizedBox(width: 6),
+                                        Expanded(
+                                          child: Text(
+                                            '${invoice.courierPartner ?? "Courier"}${invoice.trackingNumber != null ? " • AWB: ${invoice.trackingNumber}" : ""}',
+                                            style: TextStyle(fontSize: 11.5, color: Colors.grey.shade700, fontWeight: FontWeight.w500),
+                                            maxLines: 1,
+                                            overflow: TextOverflow.ellipsis,
+                                          ),
+                                        ),
+                                        Container(
+                                          padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 1.5),
+                                          decoration: BoxDecoration(
+                                            color: _getDispatchStatusColor(invoice.dispatchStatus).withValues(alpha: 0.12),
+                                            borderRadius: BorderRadius.circular(4),
+                                            border: Border.all(color: _getDispatchStatusColor(invoice.dispatchStatus).withValues(alpha: 0.3)),
+                                          ),
+                                          child: Text(
+                                            invoice.dispatchStatus ?? 'PENDING',
+                                            style: TextStyle(
+                                              fontSize: 9.5,
+                                              fontWeight: FontWeight.bold,
+                                              color: _getDispatchStatusColor(invoice.dispatchStatus),
+                                            ),
+                                          ),
+                                        ),
+                                      ],
+                                    ),
+                                  ],
                                   const SizedBox(height: 10),
 
                                   // Row 3: Date & Total Amount

kifi-app/lib/features/sales/presentation/marketplace_settlements_screen.dart

@@ -0,0 +1,865 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:lucide_icons_flutter/lucide_icons.dart';
+import 'package:intl/intl.dart';
+import '../domain/marketplace_settlement.dart';
+import '../domain/invoice.dart';
+import '../providers/marketplace_settlements_provider.dart';
+import '../providers/invoices_provider.dart';
+import 'invoice_details_screen.dart';
+import 'widgets/settle_marketplace_order_sheet.dart';
+
+class MarketplaceSettlementsScreen extends ConsumerStatefulWidget {
+  const MarketplaceSettlementsScreen({super.key});
+
+  @override
+  ConsumerState<MarketplaceSettlementsScreen> createState() => _MarketplaceSettlementsScreenState();
+}
+
+class _MarketplaceSettlementsScreenState extends ConsumerState<MarketplaceSettlementsScreen> with SingleTickerProviderStateMixin {
+  String _searchQuery = '';
+  final TextEditingController _searchController = TextEditingController();
+  String? _selectedChannelFilter;
+  late TabController _tabController;
+
+  final formatCurrency = NumberFormat.currency(symbol: '₹');
+  final formatDate = DateFormat('MMM dd, yyyy');
+
+  @override
+  void initState() {
+    super.initState();
+    _tabController = TabController(length: 2, vsync: this);
+  }
+
+  @override
+  void dispose() {
+    _searchController.dispose();
+    _tabController.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final settlementsState = ref.watch(marketplaceSettlementsProvider);
+    final invoices = ref.watch(invoicesProvider).value ?? [];
+    final isDark = Theme.of(context).brightness == Brightness.dark;
+
+    // Filter pending channel invoices (invoices that have a sales channel and are not fully settled yet)
+    final pendingChannelInvoices = invoices.where((inv) {
+      final isChannelOrder = inv.salesChannel != null &&
+          inv.salesChannel!.isNotEmpty &&
+          inv.salesChannel!.toUpperCase() != 'DIRECT_POS' &&
+          inv.salesChannel!.toUpperCase() != 'STORE';
+      final isUnsettled = inv.status != 'PAID' && inv.status != 'SETTLED' && inv.status != 'RETURNED';
+      return isChannelOrder && isUnsettled;
+    }).toList();
+
+    return Scaffold(
+      backgroundColor: isDark ? const Color(0xFF090D16) : const Color(0xFFF4F6F9),
+      appBar: AppBar(
+        title: const Text('Marketplace Settlements & Fees', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 18)),
+        elevation: 0,
+        backgroundColor: isDark ? const Color(0xFF131B2E) : Colors.white,
+        foregroundColor: isDark ? Colors.white : Colors.black87,
+        centerTitle: false,
+        actions: [
+          IconButton(
+            icon: const Icon(LucideIcons.refreshCw, size: 18),
+            tooltip: 'Refresh Settlements',
+            onPressed: () {
+              ref.refresh(marketplaceSettlementsProvider);
+              ref.refresh(invoicesProvider);
+            },
+          ),
+          const SizedBox(width: 8),
+        ],
+      ),
+      body: settlementsState.when(
+        data: (settlements) {
+          final filteredSettlements = settlements.where((s) {
+            final q = _searchQuery.toLowerCase();
+            final invoice = invoices.where((i) => i.id == s.invoiceId).firstOrNull;
+
+            final matchesRef = s.settlementRef?.toLowerCase().contains(q) ?? false;
+            final matchesChannel = s.channelName?.toLowerCase().contains(q) ?? false;
+            final matchesInvoice = invoice != null &&
+                (invoice.invoiceNumber.toLowerCase().contains(q) ||
+                    (invoice.marketplaceOrderId?.toLowerCase().contains(q) ?? false));
+
+            final matchesSearch = q.isEmpty || matchesRef || matchesChannel || matchesInvoice;
+            final matchesFilter = _selectedChannelFilter == null || s.channelName == _selectedChannelFilter;
+
+            return matchesSearch && matchesFilter;
+          }).toList();
+
+          // Aggregate Metrics
+          double totalGross = 0.0;
+          double totalNetPayout = 0.0;
+          double totalDeductions = 0.0;
+          double totalTcsTds = 0.0;
+
+          for (var s in settlements) {
+            totalGross += s.grossAmount;
+            totalNetPayout += s.netPayoutAmount;
+            totalDeductions += s.totalDeductions;
+            totalTcsTds += (s.tcsGstAmount + s.tdsAmount);
+          }
+
+          final uniqueChannels = settlements
+              .map((s) => s.channelName)
+              .whereType<String>()
+              .toSet()
+              .toList();
+
+          return Center(
+            child: ConstrainedBox(
+              constraints: const BoxConstraints(maxWidth: 1040),
+              child: CustomScrollView(
+                slivers: [
+                  // 1. Overview Header & Explanation Card
+                  SliverToBoxAdapter(
+                    child: Padding(
+                      padding: const EdgeInsets.fromLTRB(16, 16, 16, 8),
+                      child: Container(
+                        padding: const EdgeInsets.all(18),
+                        decoration: BoxDecoration(
+                          gradient: LinearGradient(
+                            colors: isDark
+                                ? [const Color(0xFF1E293B), const Color(0xFF0F172A)]
+                                : [Colors.white, const Color(0xFFF1F5F9)],
+                            begin: Alignment.topLeft,
+                            end: Alignment.bottomRight,
+                          ),
+                          borderRadius: BorderRadius.circular(16),
+                          border: Border.all(color: isDark ? Colors.white10 : Colors.grey.shade200),
+                          boxShadow: [
+                            BoxShadow(
+                              color: Colors.black.withValues(alpha: isDark ? 0.2 : 0.03),
+                              blurRadius: 10,
+                              offset: const Offset(0, 4),
+                            ),
+                          ],
+                        ),
+                        child: Row(
+                          crossAxisAlignment: CrossAxisAlignment.start,
+                          children: [
+                            Container(
+                              padding: const EdgeInsets.all(12),
+                              decoration: BoxDecoration(
+                                color: Colors.indigo.withValues(alpha: 0.12),
+                                borderRadius: BorderRadius.circular(12),
+                              ),
+                              child: const Icon(LucideIcons.landmark, color: Colors.indigo, size: 28),
+                            ),
+                            const SizedBox(width: 14),
+                            Expanded(
+                              child: Column(
+                                crossAxisAlignment: CrossAxisAlignment.start,
+                                children: [
+                                  const Text(
+                                    'Marketplace Payout & Tax Reconciliation Hub',
+                                    style: TextStyle(fontWeight: FontWeight.bold, fontSize: 16),
+                                  ),
+                                  const SizedBox(height: 4),
+                                  Text(
+                                    'Reconcile actual bank remittances against marketplace orders (Amazon, Flipkart, Shopify). Automatically track referral commissions, shipping deductions, 18% fee GST, and claimable 1% TCS / 0.1% TDS tax credits.',
+                                    style: TextStyle(
+                                      fontSize: 13,
+                                      color: isDark ? Colors.grey.shade400 : Colors.grey.shade600,
+                                      height: 1.4,
+                                    ),
+                                  ),
+                                ],
+                              ),
+                            ),
+                          ],
+                        ),
+                      ),
+                    ),
+                  ),
+
+                  // 2. Metric KPI Cards (2x2 Grid)
+                  SliverToBoxAdapter(
+                    child: Padding(
+                      padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
+                      child: LayoutBuilder(
+                        builder: (context, constraints) {
+                          final isWide = constraints.maxWidth > 700;
+                          return isWide
+                              ? Row(
+                                  children: [
+                                    Expanded(
+                                      child: _buildMetricCard(
+                                        title: 'Gross Channel Sales',
+                                        value: formatCurrency.format(totalGross),
+                                        subtitle: 'Total invoiced order value',
+                                        icon: LucideIcons.shoppingBag,
+                                        color: Colors.blue,
+                                        isDark: isDark,
+                                      ),
+                                    ),
+                                    const SizedBox(width: 12),
+                                    Expanded(
+                                      child: _buildMetricCard(
+                                        title: 'Net Bank Remittances',
+                                        value: formatCurrency.format(totalNetPayout),
+                                        subtitle: 'Deposited into bank accounts',
+                                        icon: LucideIcons.landmark,
+                                        color: const Color(0xFF10B981),
+                                        isDark: isDark,
+                                      ),
+                                    ),
+                                    const SizedBox(width: 12),
+                                    Expanded(
+                                      child: _buildMetricCard(
+                                        title: 'Fee Deductions',
+                                        value: formatCurrency.format(totalDeductions),
+                                        subtitle: 'Commissions, shipping & 18% GST',
+                                        icon: LucideIcons.scissors,
+                                        color: Colors.orange,
+                                        isDark: isDark,
+                                      ),
+                                    ),
+                                    const SizedBox(width: 12),
+                                    Expanded(
+                                      child: _buildMetricCard(
+                                        title: 'TCS & TDS Tax Credits',
+                                        value: formatCurrency.format(totalTcsTds),
+                                        subtitle: '1% GST TCS + 0.1% TDS 194O',
+                                        icon: LucideIcons.shieldCheck,
+                                        color: Colors.purple,
+                                        isDark: isDark,
+                                      ),
+                                    ),
+                                  ],
+                                )
+                              : Column(
+                                  children: [
+                                    Row(
+                                      children: [
+                                        Expanded(
+                                          child: _buildMetricCard(
+                                            title: 'Gross Sales',
+                                            value: formatCurrency.format(totalGross),
+                                            subtitle: 'Invoiced value',
+                                            icon: LucideIcons.shoppingBag,
+                                            color: Colors.blue,
+                                            isDark: isDark,
+                                          ),
+                                        ),
+                                        const SizedBox(width: 10),
+                                        Expanded(
+                                          child: _buildMetricCard(
+                                            title: 'Net Remitted',
+                                            value: formatCurrency.format(totalNetPayout),
+                                            subtitle: 'Bank deposits',
+                                            icon: LucideIcons.landmark,
+                                            color: const Color(0xFF10B981),
+                                            isDark: isDark,
+                                          ),
+                                        ),
+                                      ],
+                                    ),
+                                    const SizedBox(height: 10),
+                                    Row(
+                                      children: [
+                                        Expanded(
+                                          child: _buildMetricCard(
+                                            title: 'Fee Deductions',
+                                            value: formatCurrency.format(totalDeductions),
+                                            subtitle: 'Platform fees',
+                                            icon: LucideIcons.scissors,
+                                            color: Colors.orange,
+                                            isDark: isDark,
+                                          ),
+                                        ),
+                                        const SizedBox(width: 10),
+                                        Expanded(
+                                          child: _buildMetricCard(
+                                            title: 'TCS / TDS Credits',
+                                            value: formatCurrency.format(totalTcsTds),
+                                            subtitle: 'Tax withholdings',
+                                            icon: LucideIcons.shieldCheck,
+                                            color: Colors.purple,
+                                            isDark: isDark,
+                                          ),
+                                        ),
+                                      ],
+                                    ),
+                                  ],
+                                );
+                        },
+                      ),
+                    ),
+                  ),
+
+                  // 3. Tab Bar (Reconciled vs Unsettled Orders)
+                  SliverToBoxAdapter(
+                    child: Padding(
+                      padding: const EdgeInsets.fromLTRB(16, 12, 16, 8),
+                      child: Container(
+                        decoration: BoxDecoration(
+                          color: isDark ? const Color(0xFF1E293B) : Colors.white,
+                          borderRadius: BorderRadius.circular(12),
+                          border: Border.all(color: isDark ? Colors.white10 : Colors.grey.shade200),
+                        ),
+                        child: TabBar(
+                          controller: _tabController,
+                          labelColor: Colors.blue,
+                          unselectedLabelColor: isDark ? Colors.grey.shade400 : Colors.grey.shade600,
+                          indicatorColor: Colors.blue,
+                          indicatorWeight: 3,
+                          tabs: [
+                            Tab(
+                              child: Row(
+                                mainAxisAlignment: MainAxisAlignment.center,
+                                children: [
+                                  const Icon(LucideIcons.checkCheck, size: 16),
+                                  const SizedBox(width: 8),
+                                  Text('Reconciled Settlements (${settlements.length})', style: const TextStyle(fontWeight: FontWeight.bold)),
+                                ],
+                              ),
+                            ),
+                            Tab(
+                              child: Row(
+                                mainAxisAlignment: MainAxisAlignment.center,
+                                children: [
+                                  const Icon(LucideIcons.clock, size: 16),
+                                  const SizedBox(width: 8),
+                                  Text('Unsettled Channel Orders (${pendingChannelInvoices.length})', style: const TextStyle(fontWeight: FontWeight.bold)),
+                                ],
+                              ),
+                            ),
+                          ],
+                          onTap: (_) => setState(() {}),
+                        ),
+                      ),
+                    ),
+                  ),
+
+                  // 4. Tab Content View
+                  _tabController.index == 0
+                      ? _buildReconciledTab(
+                          context,
+                          filteredSettlements,
+                          invoices,
+                          uniqueChannels,
+                          isDark,
+                          onSwitchToPending: () {
+                            _tabController.animateTo(1);
+                            setState(() {});
+                          },
+                        )
+                      : _buildUnsettledOrdersTab(
+                          context,
+                          pendingChannelInvoices,
+                          isDark,
+                        ),
+                ],
+              ),
+            ),
+          );
+        },
+        loading: () => const Center(child: CircularProgressIndicator()),
+        error: (e, stack) => Center(child: Text('Error: $e')),
+      ),
+    );
+  }
+
+  Widget _buildReconciledTab(
+    BuildContext context,
+    List<MarketplaceSettlement> settlements,
+    List<Invoice> invoices,
+    List<String> uniqueChannels,
+    bool isDark, {
+    required VoidCallback onSwitchToPending,
+  }) {
+    if (settlements.isEmpty) {
+      return SliverToBoxAdapter(
+        child: Padding(
+          padding: const EdgeInsets.all(24.0),
+          child: Container(
+            padding: const EdgeInsets.all(32),
+            decoration: BoxDecoration(
+              color: isDark ? const Color(0xFF1E293B) : Colors.white,
+              borderRadius: BorderRadius.circular(16),
+              border: Border.all(color: isDark ? Colors.white10 : Colors.grey.shade200),
+            ),
+            child: Column(
+              children: [
+                Container(
+                  padding: const EdgeInsets.all(16),
+                  decoration: BoxDecoration(
+                    color: Colors.blue.withValues(alpha: 0.1),
+                    shape: BoxShape.circle,
+                  ),
+                  child: const Icon(LucideIcons.fileSpreadsheet, size: 40, color: Colors.blue),
+                ),
+                const SizedBox(height: 16),
+                const Text(
+                  'No Reconciled Settlements Yet',
+                  style: TextStyle(fontWeight: FontWeight.bold, fontSize: 18),
+                ),
+                const SizedBox(height: 8),
+                Text(
+                  'When you receive platform payout reports from Amazon, Flipkart, or Shopify, reconcile them here to record fee deductions, claim TCS/TDS, and update your bank balance.',
+                  textAlign: TextAlign.center,
+                  style: TextStyle(
+                    fontSize: 13,
+                    color: isDark ? Colors.grey.shade400 : Colors.grey.shade600,
+                  ),
+                ),
+                const SizedBox(height: 20),
+                ElevatedButton.icon(
+                  onPressed: onSwitchToPending,
+                  icon: const Icon(LucideIcons.arrowRight, size: 16),
+                  label: const Text('View Unsettled Channel Orders', style: TextStyle(fontWeight: FontWeight.bold)),
+                  style: ElevatedButton.styleFrom(
+                    backgroundColor: Colors.blue,
+                    foregroundColor: Colors.white,
+                    padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 12),
+                    shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(10)),
+                  ),
+                ),
+              ],
+            ),
+          ),
+        ),
+      );
+    }
+
+    return SliverList(
+      delegate: SliverChildListDelegate([
+        // Search & Channel Filter Bar
+        Padding(
+          padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
+          child: Container(
+            padding: const EdgeInsets.all(12),
+            decoration: BoxDecoration(
+              color: isDark ? const Color(0xFF1E293B) : Colors.white,
+              borderRadius: BorderRadius.circular(12),
+              border: Border.all(color: isDark ? Colors.white10 : Colors.grey.shade200),
+            ),
+            child: Column(
+              children: [
+                TextField(
+                  controller: _searchController,
+                  decoration: InputDecoration(
+                    hintText: 'Search by Order ID, Bank UTR, or Channel...',
+                    prefixIcon: const Icon(LucideIcons.search, size: 18, color: Colors.grey),
+                    contentPadding: const EdgeInsets.symmetric(vertical: 8),
+                    border: OutlineInputBorder(borderRadius: BorderRadius.circular(10), borderSide: BorderSide.none),
+                    filled: true,
+                    fillColor: isDark ? const Color(0xFF0F172A) : const Color(0xFFF1F5F9),
+                    isDense: true,
+                    suffixIcon: _searchQuery.isNotEmpty
+                        ? IconButton(
+                            icon: const Icon(LucideIcons.xCircle, size: 16),
+                            onPressed: () {
+                              _searchController.clear();
+                              setState(() => _searchQuery = '');
+                            },
+                          )
+                        : null,
+                  ),
+                  onChanged: (val) => setState(() => _searchQuery = val.trim()),
+                ),
+                if (uniqueChannels.isNotEmpty) ...[
+                  const SizedBox(height: 8),
+                  SingleChildScrollView(
+                    scrollDirection: Axis.horizontal,
+                    child: Row(
+                      children: [
+                        FilterChip(
+                          label: const Text('All Channels', style: TextStyle(fontSize: 12)),
+                          selected: _selectedChannelFilter == null,
+                          onSelected: (selected) {
+                            if (selected) setState(() => _selectedChannelFilter = null);
+                          },
+                        ),
+                        const SizedBox(width: 8),
+                        ...uniqueChannels.map((ch) {
+                          final isSelected = _selectedChannelFilter == ch;
+                          return Padding(
+                            padding: const EdgeInsets.only(right: 8.0),
+                            child: FilterChip(
+                              label: Text(ch, style: const TextStyle(fontSize: 12)),
+                              selected: isSelected,
+                              onSelected: (selected) {
+                                setState(() => _selectedChannelFilter = selected ? ch : null);
+                              },
+                            ),
+                          );
+                        }),
+                      ],
+                    ),
+                  ),
+                ],
+              ],
+            ),
+          ),
+        ),
+
+        // Settlements List Cards
+        Padding(
+          padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 4),
+          child: Column(
+            children: settlements.map((s) {
+              final invoice = invoices.where((i) => i.id == s.invoiceId).firstOrNull;
+              return Container(
+                margin: const EdgeInsets.only(bottom: 12),
+                padding: const EdgeInsets.all(16),
+                decoration: BoxDecoration(
+                  color: isDark ? const Color(0xFF1E293B) : Colors.white,
+                  borderRadius: BorderRadius.circular(16),
+                  border: Border.all(color: isDark ? Colors.white10 : Colors.grey.shade200),
+                  boxShadow: [
+                    BoxShadow(
+                      color: Colors.black.withValues(alpha: isDark ? 0.2 : 0.02),
+                      blurRadius: 6,
+                      offset: const Offset(0, 2),
+                    ),
+                  ],
+                ),
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Row(
+                      mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                      children: [
+                        Row(
+                          children: [
+                            Container(
+                              padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 4),
+                              decoration: BoxDecoration(
+                                color: Colors.blue.withValues(alpha: 0.12),
+                                borderRadius: BorderRadius.circular(8),
+                              ),
+                              child: Text(
+                                s.channelName ?? 'Marketplace',
+                                style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 13, color: Colors.blue),
+                              ),
+                            ),
+                            if (s.settlementRef != null) ...[
+                              const SizedBox(width: 10),
+                              Text(
+                                'UTR: ${s.settlementRef}',
+                                style: TextStyle(fontSize: 12, color: isDark ? Colors.grey.shade400 : Colors.grey.shade600),
+                              ),
+                            ],
+                          ],
+                        ),
+                        Container(
+                          padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
+                          decoration: BoxDecoration(
+                            color: const Color(0xFF10B981).withValues(alpha: 0.12),
+                            borderRadius: BorderRadius.circular(8),
+                          ),
+                          child: const Row(
+                            children: [
+                              Icon(LucideIcons.checkCheck, size: 12, color: Color(0xFF10B981)),
+                              SizedBox(width: 4),
+                              Text('Reconciled', style: TextStyle(fontSize: 12, fontWeight: FontWeight.bold, color: Color(0xFF10B981))),
+                            ],
+                          ),
+                        ),
+                      ],
+                    ),
+                    const SizedBox(height: 12),
+
+                    if (invoice != null) ...[
+                      InkWell(
+                        onTap: () {
+                          Navigator.push(
+                            context,
+                            MaterialPageRoute(builder: (_) => InvoiceDetailsScreen(invoice: invoice)),
+                          );
+                        },
+                        child: Row(
+                          children: [
+                            const Icon(LucideIcons.fileText, size: 15, color: Colors.blue),
+                            const SizedBox(width: 6),
+                            Text(
+                              'Invoice #${invoice.invoiceNumber}  •  Order #${invoice.marketplaceOrderId ?? "-"}',
+                              style: const TextStyle(fontSize: 13, fontWeight: FontWeight.bold, color: Colors.blue),
+                            ),
+                            const Spacer(),
+                            const Icon(LucideIcons.chevronRight, size: 16, color: Colors.blue),
+                          ],
+                        ),
+                      ),
+                      const SizedBox(height: 12),
+                    ],
+
+                    // Deductions breakdown strip
+                    Container(
+                      padding: const EdgeInsets.all(12),
+                      decoration: BoxDecoration(
+                        color: isDark ? const Color(0xFF0F172A) : const Color(0xFFF8FAFC),
+                        borderRadius: BorderRadius.circular(12),
+                      ),
+                      child: Row(
+                        mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                        children: [
+                          _buildDetailStat('Gross Value', formatCurrency.format(s.grossAmount)),
+                          _buildDetailStat('Deductions', '- ${formatCurrency.format(s.totalDeductions)}', isRed: true),
+                          _buildDetailStat('Net Remitted', formatCurrency.format(s.netPayoutAmount), isGreen: true),
+                        ],
+                      ),
+                    ),
+                    const SizedBox(height: 8),
+
+                    Row(
+                      mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                      children: [
+                        Text(
+                          'Settled on ${formatDate.format(s.settlementDate)}',
+                          style: TextStyle(fontSize: 12, color: isDark ? Colors.grey.shade400 : Colors.grey.shade600),
+                        ),
+                        if (s.tcsGstAmount > 0 || s.tdsAmount > 0)
+                          Text(
+                            'TCS/TDS Claimable: ${formatCurrency.format(s.tcsGstAmount + s.tdsAmount)}',
+                            style: TextStyle(fontSize: 12, color: Colors.purple.shade700, fontWeight: FontWeight.bold),
+                          ),
+                      ],
+                    ),
+                  ],
+                ),
+              );
+            }).toList(),
+          ),
+        ),
+        const SizedBox(height: 40),
+      ]),
+    );
+  }
+
+  Widget _buildUnsettledOrdersTab(
+    BuildContext context,
+    List<Invoice> pendingInvoices,
+    bool isDark,
+  ) {
+    if (pendingInvoices.isEmpty) {
+      return SliverToBoxAdapter(
+        child: Padding(
+          padding: const EdgeInsets.all(24.0),
+          child: Container(
+            padding: const EdgeInsets.all(32),
+            decoration: BoxDecoration(
+              color: isDark ? const Color(0xFF1E293B) : Colors.white,
+              borderRadius: BorderRadius.circular(16),
+              border: Border.all(color: isDark ? Colors.white10 : Colors.grey.shade200),
+            ),
+            child: Column(
+              children: [
+                Container(
+                  padding: const EdgeInsets.all(16),
+                  decoration: BoxDecoration(
+                    color: const Color(0xFF10B981).withValues(alpha: 0.1),
+                    shape: BoxShape.circle,
+                  ),
+                  child: const Icon(LucideIcons.checkCheck, size: 40, color: Color(0xFF10B981)),
+                ),
+                const SizedBox(height: 16),
+                const Text(
+                  'All Marketplace Orders Reconciled!',
+                  style: TextStyle(fontWeight: FontWeight.bold, fontSize: 18),
+                ),
+                const SizedBox(height: 8),
+                Text(
+                  'There are currently no outstanding marketplace invoices waiting for bank payout reconciliation.',
+                  textAlign: TextAlign.center,
+                  style: TextStyle(
+                    fontSize: 13,
+                    color: isDark ? Colors.grey.shade400 : Colors.grey.shade600,
+                  ),
+                ),
+              ],
+            ),
+          ),
+        ),
+      );
+    }
+
+    return SliverList(
+      delegate: SliverChildListDelegate([
+        Padding(
+          padding: const EdgeInsets.fromLTRB(16, 8, 16, 8),
+          child: Text(
+            'The following invoices are attributed to online channels and have not been reconciled with a bank payout:',
+            style: TextStyle(fontSize: 13, color: isDark ? Colors.grey.shade400 : Colors.grey.shade600),
+          ),
+        ),
+        Padding(
+          padding: const EdgeInsets.symmetric(horizontal: 16),
+          child: Column(
+            children: pendingInvoices.map((inv) {
+              return Container(
+                margin: const EdgeInsets.only(bottom: 12),
+                padding: const EdgeInsets.all(16),
+                decoration: BoxDecoration(
+                  color: isDark ? const Color(0xFF1E293B) : Colors.white,
+                  borderRadius: BorderRadius.circular(16),
+                  border: Border.all(color: isDark ? Colors.white10 : Colors.grey.shade200),
+                ),
+                child: Row(
+                  crossAxisAlignment: CrossAxisAlignment.center,
+                  children: [
+                    Expanded(
+                      child: Column(
+                        crossAxisAlignment: CrossAxisAlignment.start,
+                        children: [
+                          Row(
+                            children: [
+                              Container(
+                                padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 3),
+                                decoration: BoxDecoration(
+                                  color: Colors.blue.withValues(alpha: 0.12),
+                                  borderRadius: BorderRadius.circular(6),
+                                ),
+                                child: Text(
+                                  inv.salesChannel ?? 'Marketplace',
+                                  style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 12, color: Colors.blue),
+                                ),
+                              ),
+                              const SizedBox(width: 8),
+                              Text(
+                                'Order #${inv.marketplaceOrderId ?? "-"}',
+                                style: const TextStyle(fontSize: 12, fontWeight: FontWeight.w600),
+                              ),
+                            ],
+                          ),
+                          const SizedBox(height: 8),
+                          Text(
+                            'Invoice #${inv.invoiceNumber}',
+                            style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 15),
+                          ),
+                          const SizedBox(height: 4),
+                          Text(
+                            'Invoice Date: ${formatDate.format(inv.issueDate)}  •  Gross Amount: ${formatCurrency.format(inv.totalAmount)}',
+                            style: TextStyle(fontSize: 12, color: isDark ? Colors.grey.shade400 : Colors.grey.shade600),
+                          ),
+                        ],
+                      ),
+                    ),
+                    const SizedBox(width: 12),
+                    ElevatedButton.icon(
+                      onPressed: () async {
+                        final result = await showModalBottomSheet(
+                          context: context,
+                          isScrollControlled: true,
+                          shape: const RoundedRectangleBorder(
+                            borderRadius: BorderRadius.vertical(top: Radius.circular(24)),
+                          ),
+                          builder: (_) => SettleMarketplaceOrderSheet(invoice: inv),
+                        );
+                        if (result != null) {
+                          ref.refresh(marketplaceSettlementsProvider);
+                          ref.refresh(invoicesProvider);
+                        }
+                      },
+                      icon: const Icon(LucideIcons.landmark, size: 14),
+                      label: const Text('Settle Payout', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 12)),
+                      style: ElevatedButton.styleFrom(
+                        backgroundColor: const Color(0xFF10B981),
+                        foregroundColor: Colors.white,
+                        padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 10),
+                        shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(10)),
+                      ),
+                    ),
+                  ],
+                ),
+              );
+            }).toList(),
+          ),
+        ),
+        const SizedBox(height: 40),
+      ]),
+    );
+  }
+
+  Widget _buildMetricCard({
+    required String title,
+    required String value,
+    required String subtitle,
+    required IconData icon,
+    required Color color,
+    required bool isDark,
+  }) {
+    return Container(
+      padding: const EdgeInsets.all(16),
+      decoration: BoxDecoration(
+        color: isDark ? const Color(0xFF1E293B) : Colors.white,
+        borderRadius: BorderRadius.circular(16),
+        border: Border.all(color: color.withValues(alpha: 0.2)),
+        boxShadow: [
+          BoxShadow(
+            color: color.withValues(alpha: isDark ? 0.1 : 0.04),
+            blurRadius: 10,
+            offset: const Offset(0, 4),
+          ),
+        ],
+      ),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Row(
+            children: [
+              Container(
+                padding: const EdgeInsets.all(8),
+                decoration: BoxDecoration(
+                  color: color.withValues(alpha: 0.12),
+                  borderRadius: BorderRadius.circular(10),
+                ),
+                child: Icon(icon, size: 18, color: color),
+              ),
+              const SizedBox(width: 8),
+              Expanded(
+                child: Text(
+                  title,
+                  style: TextStyle(
+                    fontSize: 12,
+                    fontWeight: FontWeight.bold,
+                    color: isDark ? Colors.grey.shade400 : Colors.grey.shade700,
+                  ),
+                  maxLines: 1,
+                  overflow: TextOverflow.ellipsis,
+                ),
+              ),
+            ],
+          ),
+          const SizedBox(height: 12),
+          Text(
+            value,
+            style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold, color: color),
+          ),
+          const SizedBox(height: 4),
+          Text(
+            subtitle,
+            style: TextStyle(fontSize: 11, color: isDark ? Colors.grey.shade500 : Colors.grey.shade500),
+            maxLines: 1,
+            overflow: TextOverflow.ellipsis,
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildDetailStat(String label, String value, {bool isGreen = false, bool isRed = false}) {
+    Color valColor = Colors.black87;
+    if (isGreen) valColor = const Color(0xFF10B981);
+    if (isRed) valColor = Colors.red;
+
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        Text(label, style: const TextStyle(fontSize: 11, color: Colors.grey)),
+        const SizedBox(height: 3),
+        Text(
+          value,
+          style: TextStyle(fontSize: 13, fontWeight: FontWeight.bold, color: valColor),
+        ),
+      ],
+    );
+  }
+}

kifi-app/lib/features/sales/presentation/widgets/create_credit_note_sheet.dart

@@ -0,0 +1,594 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:lucide_icons_flutter/lucide_icons.dart';
+import 'package:intl/intl.dart';
+import '../../domain/invoice.dart';
+import '../../domain/credit_note.dart';
+import '../../../transactions/providers/providers.dart';
+import '../../providers/credit_notes_provider.dart';
+
+class CreateCreditNoteSheet extends ConsumerStatefulWidget {
+  final Invoice invoice;
+
+  const CreateCreditNoteSheet({
+    super.key,
+    required this.invoice,
+  });
+
+  @override
+  ConsumerState<CreateCreditNoteSheet> createState() => _CreateCreditNoteSheetState();
+}
+
+class _CreateCreditNoteSheetState extends ConsumerState<CreateCreditNoteSheet> {
+  final _creditNoteNumberCtrl = TextEditingController();
+  final _notesCtrl = TextEditingController();
+
+  DateTime _returnDate = DateTime.now();
+  String _reason = 'CUSTOMER_RETURN';
+  bool _restockItems = true;
+  String _refundStatus = 'ADJUSTED_TO_AR';
+  int? _selectedWalletId;
+  bool _isLoading = false;
+
+  // Selected item IDs and their return quantities
+  final Set<int> _selectedItemIndices = {};
+  final Map<int, double> _returnQuantities = {};
+
+  final formatCurrency = NumberFormat.currency(symbol: '₹');
+  final formatDate = DateFormat('MMM dd, yyyy');
+
+  @override
+  void initState() {
+    super.initState();
+    _creditNoteNumberCtrl.text = 'CN-${DateTime.now().millisecondsSinceEpoch.toString().substring(6)}';
+    
+    // Select all items by default for convenience
+    for (int i = 0; i < widget.invoice.items.length; i++) {
+      _selectedItemIndices.add(i);
+      final item = widget.invoice.items[i];
+      final qty = item.weight != null && item.weight! > 0 ? item.weight! : (item.quantity > 0 ? item.quantity : 1.0);
+      _returnQuantities[i] = qty;
+    }
+  }
+
+  @override
+  void dispose() {
+    _creditNoteNumberCtrl.dispose();
+    _notesCtrl.dispose();
+    super.dispose();
+  }
+
+  double _calculateReturnSubtotal() {
+    double subtotal = 0.0;
+    for (var idx in _selectedItemIndices) {
+      if (idx < widget.invoice.items.length) {
+        final item = widget.invoice.items[idx];
+        final maxQty = item.weight != null && item.weight! > 0 ? item.weight! : (item.quantity > 0 ? item.quantity : 1.0);
+        final retQty = _returnQuantities[idx] ?? maxQty;
+        final ratio = maxQty > 0 ? (retQty / maxQty).clamp(0.0, 1.0) : 1.0;
+        subtotal += (item.unitPrice * retQty) + (item.makingCharge * ratio);
+      }
+    }
+    return subtotal;
+  }
+
+  double _calculateReturnTax() {
+    double tax = 0.0;
+    for (var idx in _selectedItemIndices) {
+      if (idx < widget.invoice.items.length) {
+        final item = widget.invoice.items[idx];
+        final maxQty = item.weight != null && item.weight! > 0 ? item.weight! : (item.quantity > 0 ? item.quantity : 1.0);
+        final retQty = _returnQuantities[idx] ?? maxQty;
+        final ratio = maxQty > 0 ? (retQty / maxQty).clamp(0.0, 1.0) : 1.0;
+        final taxable = (item.unitPrice * retQty) + (item.makingCharge * ratio) + (item.otherCharges * ratio) - (item.discount * ratio);
+        tax += (taxable * item.taxRate) / 100.0;
+      }
+    }
+    return tax;
+  }
+
+  double _calculateReturnTotal() {
+    double total = 0.0;
+    for (var idx in _selectedItemIndices) {
+      if (idx < widget.invoice.items.length) {
+        final item = widget.invoice.items[idx];
+        final maxQty = item.weight != null && item.weight! > 0 ? item.weight! : (item.quantity > 0 ? item.quantity : 1.0);
+        final retQty = _returnQuantities[idx] ?? maxQty;
+        final ratio = maxQty > 0 ? (retQty / maxQty).clamp(0.0, 1.0) : 1.0;
+        total += item.total * ratio;
+      }
+    }
+    return total;
+  }
+
+  Future<void> _submitCreditNote() async {
+    if (_selectedItemIndices.isEmpty) {
+      ScaffoldMessenger.of(context).showSnackBar(
+        const SnackBar(content: Text('Please select at least one item to return.')),
+      );
+      return;
+    }
+
+    setState(() => _isLoading = true);
+
+    try {
+      final List<CreditNoteItem> creditNoteItems = [];
+      double subtotal = 0.0;
+      double cgstTotal = 0.0;
+      double sgstTotal = 0.0;
+      double igstTotal = 0.0;
+      double taxTotal = 0.0;
+      double discountTotal = 0.0;
+      double totalAmount = 0.0;
+
+      for (var idx in _selectedItemIndices) {
+        final item = widget.invoice.items[idx];
+        final maxQty = item.weight != null && item.weight! > 0 ? item.weight! : (item.quantity > 0 ? item.quantity : 1.0);
+        final retQty = _returnQuantities[idx] ?? maxQty;
+        final ratio = maxQty > 0 ? (retQty / maxQty).clamp(0.0, 1.0) : 1.0;
+
+        final lineTotal = item.total * ratio;
+        final lineCgst = item.cgst * ratio;
+        final lineSgst = item.sgst * ratio;
+        final lineIgst = item.igst * ratio;
+        final lineDiscount = item.discount * ratio;
+
+        subtotal += (item.unitPrice * retQty);
+        cgstTotal += lineCgst;
+        sgstTotal += lineSgst;
+        igstTotal += lineIgst;
+        taxTotal += (lineCgst + lineSgst + lineIgst);
+        discountTotal += lineDiscount;
+        totalAmount += lineTotal;
+
+        creditNoteItems.add(CreditNoteItem(
+          invoiceItemId: item.id,
+          productId: item.productId,
+          inventoryItemId: item.inventoryItemId,
+          productName: item.productName ?? item.description,
+          sku: item.sku,
+          huid: item.huid,
+          hsnCode: item.hsnCode,
+          quantity: item.weight != null && item.weight! > 0 ? 1.0 : retQty,
+          weight: item.weight != null && item.weight! > 0 ? retQty : null,
+          unitPrice: item.unitPrice,
+          taxRate: item.taxRate,
+          cgst: lineCgst,
+          sgst: lineSgst,
+          igst: lineIgst,
+          discount: lineDiscount,
+          makingCharge: item.makingCharge * ratio,
+          otherCharges: item.otherCharges * ratio,
+          total: lineTotal,
+        ));
+      }
+
+      final creditNote = CreditNote(
+        invoiceId: widget.invoice.id!,
+        creditNoteNumber: _creditNoteNumberCtrl.text.trim().isNotEmpty
+            ? _creditNoteNumberCtrl.text.trim()
+            : 'CN-${DateTime.now().millisecondsSinceEpoch.toString().substring(6)}',
+        customerId: widget.invoice.customerId,
+        returnDate: _returnDate,
+        reason: _reason,
+        restockItems: _restockItems,
+        subtotal: double.parse(subtotal.toStringAsFixed(2)),
+        taxTotal: double.parse(taxTotal.toStringAsFixed(2)),
+        cgstTotal: double.parse(cgstTotal.toStringAsFixed(2)),
+        sgstTotal: double.parse(sgstTotal.toStringAsFixed(2)),
+        igstTotal: double.parse(igstTotal.toStringAsFixed(2)),
+        discountTotal: double.parse(discountTotal.toStringAsFixed(2)),
+        totalAmount: double.parse(totalAmount.toStringAsFixed(2)),
+        refundStatus: _refundStatus,
+        refundWalletId: _refundStatus == 'REFUNDED_TO_WALLET' ? _selectedWalletId : null,
+        notes: _notesCtrl.text.trim().isNotEmpty ? _notesCtrl.text.trim() : null,
+        items: creditNoteItems,
+      );
+
+      final result = await ref
+          .read(creditNotesProvider.notifier)
+          .createCreditNote(widget.invoice.id!, creditNote);
+
+      if (mounted) {
+        Navigator.pop(context, result);
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(
+            content: Text('Credit Note #${creditNote.creditNoteNumber} issued successfully!'),
+            backgroundColor: Colors.green,
+          ),
+        );
+      }
+    } catch (e) {
+      if (mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(content: Text('Error creating credit note: $e'), backgroundColor: Colors.red),
+        );
+      }
+    } finally {
+      if (mounted) setState(() => _isLoading = false);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final isDark = Theme.of(context).brightness == Brightness.dark;
+    final wallets = ref.watch(walletProvider).value ?? [];
+    final returnTotal = _calculateReturnTotal();
+
+    final returnReasons = [
+      {'code': 'CUSTOMER_RETURN', 'label': 'Customer Return', 'icon': LucideIcons.rotateCcw},
+      {'code': 'RTO_UNDELIVERED', 'label': 'RTO / Courier Undelivered', 'icon': LucideIcons.truck},
+      {'code': 'DEFECTIVE', 'label': 'Defective / Damaged', 'icon': LucideIcons.shieldAlert},
+      {'code': 'EXCHANGE', 'label': 'Exchange / Replacement', 'icon': LucideIcons.refreshCw},
+      {'code': 'OTHER', 'label': 'Other', 'icon': LucideIcons.fileText},
+    ];
+
+    return Container(
+      decoration: BoxDecoration(
+        color: isDark ? const Color(0xFF0F172A) : Colors.white,
+        borderRadius: const BorderRadius.vertical(top: Radius.circular(24)),
+      ),
+      padding: EdgeInsets.only(
+        bottom: MediaQuery.of(context).viewInsets.bottom + 20,
+        left: 20,
+        right: 20,
+        top: 20,
+      ),
+      constraints: BoxConstraints(
+        maxHeight: MediaQuery.of(context).size.height * 0.9,
+      ),
+      child: Column(
+        mainAxisSize: MainAxisSize.min,
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          // Header Bar
+          Row(
+            mainAxisAlignment: MainAxisAlignment.spaceBetween,
+            children: [
+              Row(
+                children: [
+                  Container(
+                    padding: const EdgeInsets.all(8),
+                    decoration: BoxDecoration(
+                      color: Colors.red.withValues(alpha: 0.12),
+                      borderRadius: BorderRadius.circular(10),
+                    ),
+                    child: const Icon(LucideIcons.undo2, color: Colors.red, size: 20),
+                  ),
+                  const SizedBox(width: 10),
+                  Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    children: [
+                      const Text(
+                        'Sales Return & Credit Note',
+                        style: TextStyle(fontSize: 17, fontWeight: FontWeight.bold),
+                      ),
+                      Text(
+                        'Invoice #${widget.invoice.invoiceNumber}',
+                        style: TextStyle(fontSize: 12, color: Colors.grey.shade600),
+                      ),
+                    ],
+                  ),
+                ],
+              ),
+              IconButton(
+                icon: const Icon(LucideIcons.x),
+                onPressed: () => Navigator.pop(context),
+              ),
+            ],
+          ),
+          const SizedBox(height: 16),
+
+          Expanded(
+            child: SingleChildScrollView(
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  // Return Meta Card (Credit Note #, Return Date)
+                  Container(
+                    padding: const EdgeInsets.all(14),
+                    decoration: BoxDecoration(
+                      color: isDark ? const Color(0xFF1E293B) : Colors.grey.shade50,
+                      borderRadius: BorderRadius.circular(14),
+                      border: Border.all(color: isDark ? Colors.white10 : Colors.grey.shade200),
+                    ),
+                    child: Column(
+                      children: [
+                        Row(
+                          children: [
+                            Expanded(
+                              child: TextFormField(
+                                controller: _creditNoteNumberCtrl,
+                                decoration: InputDecoration(
+                                  labelText: 'Credit Note #',
+                                  prefixIcon: const Icon(LucideIcons.hash, size: 16),
+                                  border: OutlineInputBorder(borderRadius: BorderRadius.circular(10)),
+                                  isDense: true,
+                                ),
+                              ),
+                            ),
+                            const SizedBox(width: 10),
+                            Expanded(
+                              child: InkWell(
+                                onTap: () async {
+                                  final picked = await showDatePicker(
+                                    context: context,
+                                    initialDate: _returnDate,
+                                    firstDate: DateTime(2020),
+                                    lastDate: DateTime.now().add(const Duration(days: 30)),
+                                  );
+                                  if (picked != null) setState(() => _returnDate = picked);
+                                },
+                                child: InputDecorator(
+                                  decoration: InputDecoration(
+                                    labelText: 'Return Date',
+                                    prefixIcon: const Icon(LucideIcons.calendar, size: 16),
+                                    border: OutlineInputBorder(borderRadius: BorderRadius.circular(10)),
+                                    isDense: true,
+                                  ),
+                                  child: Text(formatDate.format(_returnDate), style: const TextStyle(fontSize: 13)),
+                                ),
+                              ),
+                            ),
+                          ],
+                        ),
+                        const SizedBox(height: 12),
+                        // Reason Selector
+                        DropdownButtonFormField<String>(
+                          value: _reason,
+                          decoration: InputDecoration(
+                            labelText: 'Return Reason',
+                            prefixIcon: const Icon(LucideIcons.helpCircle, size: 16),
+                            border: OutlineInputBorder(borderRadius: BorderRadius.circular(10)),
+                            isDense: true,
+                          ),
+                          items: returnReasons.map((r) {
+                            return DropdownMenuItem<String>(
+                              value: r['code'] as String,
+                              child: Row(
+                                children: [
+                                  Icon(r['icon'] as IconData, size: 15, color: Colors.red.shade700),
+                                  const SizedBox(width: 8),
+                                  Text(r['label'] as String, style: const TextStyle(fontSize: 13)),
+                                ],
+                              ),
+                            );
+                          }).toList(),
+                          onChanged: (val) {
+                            if (val != null) setState(() => _reason = val);
+                          },
+                        ),
+                      ],
+                    ),
+                  ),
+                  const SizedBox(height: 16),
+
+                  // Items Selection
+                  Row(
+                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                    children: [
+                      const Text(
+                        'Select Items to Return',
+                        style: TextStyle(fontWeight: FontWeight.bold, fontSize: 14),
+                      ),
+                      TextButton.icon(
+                        onPressed: () {
+                          setState(() {
+                            if (_selectedItemIndices.length == widget.invoice.items.length) {
+                              _selectedItemIndices.clear();
+                            } else {
+                              _selectedItemIndices.addAll(List.generate(widget.invoice.items.length, (i) => i));
+                            }
+                          });
+                        },
+                        icon: Icon(
+                          _selectedItemIndices.length == widget.invoice.items.length ? LucideIcons.checkSquare : LucideIcons.square,
+                          size: 14,
+                        ),
+                        label: Text(
+                          _selectedItemIndices.length == widget.invoice.items.length ? 'Deselect All' : 'Select All',
+                          style: const TextStyle(fontSize: 12),
+                        ),
+                      ),
+                    ],
+                  ),
+                  const SizedBox(height: 6),
+
+                  // Item list tiles
+                  ...widget.invoice.items.asMap().entries.map((entry) {
+                    final idx = entry.key;
+                    final item = entry.value;
+                    final isSelected = _selectedItemIndices.contains(idx);
+                    final maxQty = item.weight != null && item.weight! > 0 ? item.weight! : (item.quantity > 0 ? item.quantity : 1.0);
+                    final isWeight = item.weight != null && item.weight! > 0;
+
+                    return Container(
+                      margin: const EdgeInsets.only(bottom: 8),
+                      padding: const EdgeInsets.all(10),
+                      decoration: BoxDecoration(
+                        color: isSelected
+                            ? Colors.red.withValues(alpha: isDark ? 0.1 : 0.04)
+                            : (isDark ? const Color(0xFF1E293B) : Colors.white),
+                        borderRadius: BorderRadius.circular(12),
+                        border: Border.all(
+                          color: isSelected ? Colors.red.withValues(alpha: 0.4) : (isDark ? Colors.white10 : Colors.grey.shade200),
+                        ),
+                      ),
+                      child: Row(
+                        children: [
+                          Checkbox(
+                            value: isSelected,
+                            activeColor: Colors.red,
+                            onChanged: (val) {
+                              setState(() {
+                                if (val == true) {
+                                  _selectedItemIndices.add(idx);
+                                } else {
+                                  _selectedItemIndices.remove(idx);
+                                }
+                              });
+                            },
+                          ),
+                          Expanded(
+                            child: Column(
+                              crossAxisAlignment: CrossAxisAlignment.start,
+                              children: [
+                                Text(
+                                  item.productName ?? item.description ?? 'Product Item',
+                                  style: const TextStyle(fontWeight: FontWeight.w600, fontSize: 13),
+                                  maxLines: 1,
+                                  overflow: TextOverflow.ellipsis,
+                                ),
+                                const SizedBox(height: 2),
+                                Text(
+                                  'Sold: ${isWeight ? "${item.weight!.toStringAsFixed(3)} g" : "${item.quantity.toInt()} pcs"} • Rate: ${formatCurrency.format(item.unitPrice)}',
+                                  style: TextStyle(fontSize: 11, color: Colors.grey.shade600),
+                                ),
+                              ],
+                            ),
+                          ),
+                          Text(
+                            formatCurrency.format(item.total),
+                            style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 13),
+                          ),
+                        ],
+                      ),
+                    );
+                  }),
+                  const SizedBox(height: 14),
+
+                  // Restock Switch
+                  Container(
+                    padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 8),
+                    decoration: BoxDecoration(
+                      color: isDark ? const Color(0xFF1E293B) : Colors.grey.shade50,
+                      borderRadius: BorderRadius.circular(12),
+                      border: Border.all(color: isDark ? Colors.white10 : Colors.grey.shade200),
+                    ),
+                    child: SwitchListTile(
+                      contentPadding: EdgeInsets.zero,
+                      dense: true,
+                      activeColor: Colors.green,
+                      title: const Text('Restock returned items to inventory', style: TextStyle(fontWeight: FontWeight.w600, fontSize: 13)),
+                      subtitle: const Text('Re-inward weights & items back to available stock', style: TextStyle(fontSize: 11)),
+                      value: _restockItems,
+                      onChanged: (val) => setState(() => _restockItems = val),
+                    ),
+                  ),
+                  const SizedBox(height: 14),
+
+                  // Settlement / Refund Method
+                  const Text('Settlement / Refund Method', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 14)),
+                  const SizedBox(height: 6),
+                  DropdownButtonFormField<String>(
+                    value: _refundStatus,
+                    decoration: InputDecoration(
+                      prefixIcon: const Icon(LucideIcons.wallet, size: 16),
+                      border: OutlineInputBorder(borderRadius: BorderRadius.circular(10)),
+                      isDense: true,
+                    ),
+                    items: const [
+                      DropdownMenuItem(
+                        value: 'ADJUSTED_TO_AR',
+                        child: Text('Adjust Customer Outstanding (Credit Note)', style: TextStyle(fontSize: 13)),
+                      ),
+                      DropdownMenuItem(
+                        value: 'REFUNDED_TO_WALLET',
+                        child: Text('Refund to Cash / Bank Account', style: TextStyle(fontSize: 13)),
+                      ),
+                      DropdownMenuItem(
+                        value: 'STORE_CREDIT',
+                        child: Text('Issue Store Credit', style: TextStyle(fontSize: 13)),
+                      ),
+                    ],
+                    onChanged: (val) {
+                      if (val != null) setState(() => _refundStatus = val);
+                    },
+                  ),
+                  if (_refundStatus == 'REFUNDED_TO_WALLET') ...[
+                    const SizedBox(height: 10),
+                    DropdownButtonFormField<int>(
+                      value: _selectedWalletId ?? (wallets.isNotEmpty ? wallets.first.id : null),
+                      decoration: InputDecoration(
+                        labelText: 'Payout From Account',
+                        prefixIcon: const Icon(LucideIcons.arrowUpRight, size: 16, color: Colors.red),
+                        border: OutlineInputBorder(borderRadius: BorderRadius.circular(10)),
+                        isDense: true,
+                      ),
+                      items: wallets.map((w) {
+                        return DropdownMenuItem<int>(
+                          value: w.id,
+                          child: Text('${w.name} (${w.nature})', style: const TextStyle(fontSize: 13)),
+                        );
+                      }).toList(),
+                      onChanged: (val) => setState(() => _selectedWalletId = val),
+                    ),
+                  ],
+                  const SizedBox(height: 14),
+
+                  // Remarks
+                  TextFormField(
+                    controller: _notesCtrl,
+                    maxLines: 2,
+                    decoration: InputDecoration(
+                      labelText: 'Return Remarks / Notes (Optional)',
+                      prefixIcon: const Icon(LucideIcons.alignLeft, size: 16),
+                      border: OutlineInputBorder(borderRadius: BorderRadius.circular(10)),
+                      isDense: true,
+                    ),
+                  ),
+                  const SizedBox(height: 20),
+
+                  // Total Refund Summary Box
+                  Container(
+                    padding: const EdgeInsets.all(14),
+                    decoration: BoxDecoration(
+                      color: Colors.red.withValues(alpha: 0.08),
+                      borderRadius: BorderRadius.circular(12),
+                      border: Border.all(color: Colors.red.withValues(alpha: 0.25)),
+                    ),
+                    child: Row(
+                      mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                      children: [
+                        const Text(
+                          'Credit Note Value:',
+                          style: TextStyle(fontWeight: FontWeight.bold, fontSize: 14),
+                        ),
+                        Text(
+                          formatCurrency.format(returnTotal),
+                          style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 18, color: Colors.red),
+                        ),
+                      ],
+                    ),
+                  ),
+                  const SizedBox(height: 20),
+                ],
+              ),
+            ),
+          ),
+
+          // Submit Action Button
+          SizedBox(
+            width: double.infinity,
+            child: ElevatedButton.icon(
+              onPressed: _isLoading ? null : _submitCreditNote,
+              icon: _isLoading
+                  ? const SizedBox(width: 16, height: 16, child: CircularProgressIndicator(strokeWidth: 2, color: Colors.white))
+                  : const Icon(LucideIcons.checkCircle2, size: 18),
+              label: Text(
+                _isLoading ? 'Processing Return...' : 'Issue Credit Note (${formatCurrency.format(returnTotal)})',
+                style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 15),
+              ),
+              style: ElevatedButton.styleFrom(
+                backgroundColor: Colors.red.shade700,
+                foregroundColor: Colors.white,
+                padding: const EdgeInsets.symmetric(vertical: 14),
+                shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}

kifi-app/lib/features/sales/presentation/widgets/settle_marketplace_order_sheet.dart

@@ -0,0 +1,508 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:lucide_icons_flutter/lucide_icons.dart';
+import 'package:intl/intl.dart';
+import '../../domain/invoice.dart';
+import '../../domain/marketplace_settlement.dart';
+import '../../providers/marketplace_settlements_provider.dart';
+import '../../../transactions/providers/providers.dart';
+
+class SettleMarketplaceOrderSheet extends ConsumerStatefulWidget {
+  final Invoice invoice;
+
+  const SettleMarketplaceOrderSheet({
+    super.key,
+    required this.invoice,
+  });
+
+  @override
+  ConsumerState<SettleMarketplaceOrderSheet> createState() => _SettleMarketplaceOrderSheetState();
+}
+
+class _SettleMarketplaceOrderSheetState extends ConsumerState<SettleMarketplaceOrderSheet> {
+  final _commissionCtrl = TextEditingController();
+  final _shippingFeeCtrl = TextEditingController();
+  final _otherFeesCtrl = TextEditingController();
+  final _feeGstCtrl = TextEditingController();
+  final _tcsGstCtrl = TextEditingController();
+  final _tdsCtrl = TextEditingController();
+  final _settlementRefCtrl = TextEditingController();
+  final _notesCtrl = TextEditingController();
+
+  DateTime _settlementDate = DateTime.now();
+  int? _selectedWalletId;
+  bool _isLoading = false;
+
+  final formatCurrency = NumberFormat.currency(symbol: '₹');
+  final formatDate = DateFormat('MMM dd, yyyy');
+
+  @override
+  void initState() {
+    super.initState();
+    final gross = widget.invoice.totalAmount;
+    
+    // Auto-calculate suggested TCS (1% of net taxable) and TDS (0.1% of gross)
+    final suggestedTcs = double.parse(((gross * 0.01)).toStringAsFixed(2));
+    final suggestedTds = double.parse(((gross * 0.001)).toStringAsFixed(2));
+    
+    _tcsGstCtrl.text = suggestedTcs > 0 ? suggestedTcs.toString() : '0';
+    _tdsCtrl.text = suggestedTds > 0 ? suggestedTds.toString() : '0';
+
+    _commissionCtrl.addListener(_autoUpdateGstOnFees);
+    _shippingFeeCtrl.addListener(_autoUpdateGstOnFees);
+    _otherFeesCtrl.addListener(_autoUpdateGstOnFees);
+  }
+
+  void _autoUpdateGstOnFees() {
+    final comm = double.tryParse(_commissionCtrl.text) ?? 0.0;
+    final ship = double.tryParse(_shippingFeeCtrl.text) ?? 0.0;
+    final other = double.tryParse(_otherFeesCtrl.text) ?? 0.0;
+    final taxableFees = comm + ship + other;
+    if (taxableFees > 0) {
+      final gst = double.parse((taxableFees * 0.18).toStringAsFixed(2));
+      _feeGstCtrl.text = gst.toString();
+    }
+    setState(() {});
+  }
+
+  @override
+  void dispose() {
+    _commissionCtrl.dispose();
+    _shippingFeeCtrl.dispose();
+    _otherFeesCtrl.dispose();
+    _feeGstCtrl.dispose();
+    _tcsGstCtrl.dispose();
+    _tdsCtrl.dispose();
+    _settlementRefCtrl.dispose();
+    _notesCtrl.dispose();
+    super.dispose();
+  }
+
+  double _calculateTotalDeductions() {
+    final comm = double.tryParse(_commissionCtrl.text) ?? 0.0;
+    final ship = double.tryParse(_shippingFeeCtrl.text) ?? 0.0;
+    final other = double.tryParse(_otherFeesCtrl.text) ?? 0.0;
+    final feeGst = double.tryParse(_feeGstCtrl.text) ?? 0.0;
+    final tcs = double.tryParse(_tcsGstCtrl.text) ?? 0.0;
+    final tds = double.tryParse(_tdsCtrl.text) ?? 0.0;
+    return comm + ship + other + feeGst + tcs + tds;
+  }
+
+  double _calculateNetPayout() {
+    return widget.invoice.totalAmount - _calculateTotalDeductions();
+  }
+
+  Future<void> _submitSettlement() async {
+    setState(() => _isLoading = true);
+
+    try {
+      final comm = double.tryParse(_commissionCtrl.text) ?? 0.0;
+      final ship = double.tryParse(_shippingFeeCtrl.text) ?? 0.0;
+      final other = double.tryParse(_otherFeesCtrl.text) ?? 0.0;
+      final feeGst = double.tryParse(_feeGstCtrl.text) ?? 0.0;
+      final tcs = double.tryParse(_tcsGstCtrl.text) ?? 0.0;
+      final tds = double.tryParse(_tdsCtrl.text) ?? 0.0;
+      final totalDeductions = _calculateTotalDeductions();
+      final netPayout = _calculateNetPayout();
+
+      final settlement = MarketplaceSettlement(
+        invoiceId: widget.invoice.id!,
+        salesChannelId: widget.invoice.salesChannelId,
+        channelName: widget.invoice.salesChannel ?? 'Marketplace',
+        settlementRef: _settlementRefCtrl.text.trim().isNotEmpty ? _settlementRefCtrl.text.trim() : null,
+        settlementDate: _settlementDate,
+        grossAmount: widget.invoice.totalAmount,
+        commissionFee: comm,
+        shippingFee: ship,
+        otherFees: other,
+        feeGst: feeGst,
+        tcsGstAmount: tcs,
+        tdsAmount: tds,
+        totalDeductions: totalDeductions,
+        netPayoutAmount: netPayout,
+        payoutWalletId: _selectedWalletId,
+        status: 'SETTLED',
+        notes: _notesCtrl.text.trim().isNotEmpty ? _notesCtrl.text.trim() : null,
+      );
+
+      final result = await ref
+          .read(marketplaceSettlementsProvider.notifier)
+          .createSettlement(widget.invoice.id!, settlement);
+
+      if (mounted) {
+        Navigator.pop(context, result);
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(
+            content: Text('Marketplace settlement for Invoice #${widget.invoice.invoiceNumber} recorded successfully!'),
+            backgroundColor: Colors.green,
+          ),
+        );
+      }
+    } catch (e) {
+      if (mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(content: Text('Error recording settlement: $e'), backgroundColor: Colors.red),
+        );
+      }
+    } finally {
+      if (mounted) setState(() => _isLoading = false);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final isDark = Theme.of(context).brightness == Brightness.dark;
+    final wallets = ref.watch(walletProvider).value ?? [];
+    final bankWallets = wallets.where((w) => w.nature == 'SAVINGS' || w.nature == 'CURRENT' || w.nature == 'BANK' || w.nature == 'CASH').toList();
+    final effectiveWallets = bankWallets.isNotEmpty ? bankWallets : wallets;
+
+    final totalDeductions = _calculateTotalDeductions();
+    final netPayout = _calculateNetPayout();
+
+    return Container(
+      decoration: BoxDecoration(
+        color: isDark ? const Color(0xFF0F172A) : Colors.white,
+        borderRadius: const BorderRadius.vertical(top: Radius.circular(24)),
+      ),
+      padding: EdgeInsets.only(
+        bottom: MediaQuery.of(context).viewInsets.bottom + 20,
+        left: 20,
+        right: 20,
+        top: 20,
+      ),
+      constraints: BoxConstraints(
+        maxHeight: MediaQuery.of(context).size.height * 0.9,
+      ),
+      child: Column(
+        mainAxisSize: MainAxisSize.min,
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          // Header Bar
+          Row(
+            mainAxisAlignment: MainAxisAlignment.spaceBetween,
+            children: [
+              Row(
+                children: [
+                  Container(
+                    padding: const EdgeInsets.all(8),
+                    decoration: BoxDecoration(
+                      color: Colors.indigo.withValues(alpha: 0.12),
+                      borderRadius: BorderRadius.circular(10),
+                    ),
+                    child: const Icon(LucideIcons.landmark, color: Colors.indigo, size: 20),
+                  ),
+                  const SizedBox(width: 10),
+                  Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    children: [
+                      const Text(
+                        'Marketplace Settlement',
+                        style: TextStyle(fontSize: 17, fontWeight: FontWeight.bold),
+                      ),
+                      Text(
+                        '${widget.invoice.salesChannel ?? "Marketplace"} • Order #${widget.invoice.marketplaceOrderId ?? widget.invoice.invoiceNumber}',
+                        style: TextStyle(fontSize: 12, color: Colors.grey.shade600),
+                      ),
+                    ],
+                  ),
+                ],
+              ),
+              IconButton(
+                icon: const Icon(LucideIcons.x),
+                onPressed: () => Navigator.pop(context),
+              ),
+            ],
+          ),
+          const SizedBox(height: 16),
+
+          Expanded(
+            child: SingleChildScrollView(
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  // Gross Invoice Value Banner
+                  Container(
+                    padding: const EdgeInsets.all(14),
+                    decoration: BoxDecoration(
+                      color: isDark ? const Color(0xFF1E293B) : Colors.grey.shade50,
+                      borderRadius: BorderRadius.circular(14),
+                      border: Border.all(color: isDark ? Colors.white10 : Colors.grey.shade200),
+                    ),
+                    child: Row(
+                      mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                      children: [
+                        Column(
+                          crossAxisAlignment: CrossAxisAlignment.start,
+                          children: [
+                            const Text('Gross Invoice Value', style: TextStyle(fontSize: 12, color: Colors.grey)),
+                            const SizedBox(height: 2),
+                            Text(
+                              formatCurrency.format(widget.invoice.totalAmount),
+                              style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 18),
+                            ),
+                          ],
+                        ),
+                        Container(
+                          padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 4),
+                          decoration: BoxDecoration(
+                            color: Colors.blue.withValues(alpha: 0.1),
+                            borderRadius: BorderRadius.circular(8),
+                          ),
+                          child: Text(
+                            widget.invoice.salesChannel ?? 'Marketplace',
+                            style: const TextStyle(fontSize: 12, fontWeight: FontWeight.bold, color: Colors.blue),
+                          ),
+                        ),
+                      ],
+                    ),
+                  ),
+                  const SizedBox(height: 16),
+
+                  // Fee Deductions Breakdown
+                  const Text('Channel Fee Deductions', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 14)),
+                  const SizedBox(height: 10),
+
+                  Row(
+                    children: [
+                      Expanded(
+                        child: TextFormField(
+                          controller: _commissionCtrl,
+                          keyboardType: const TextInputType.numberWithOptions(decimal: true),
+                          decoration: InputDecoration(
+                            labelText: 'Referral / Commission',
+                            prefixText: '₹ ',
+                            border: OutlineInputBorder(borderRadius: BorderRadius.circular(10)),
+                            isDense: true,
+                          ),
+                          onChanged: (_) => setState(() {}),
+                        ),
+                      ),
+                      const SizedBox(width: 10),
+                      Expanded(
+                        child: TextFormField(
+                          controller: _shippingFeeCtrl,
+                          keyboardType: const TextInputType.numberWithOptions(decimal: true),
+                          decoration: InputDecoration(
+                            labelText: 'Logistics / Shipping',
+                            prefixText: '₹ ',
+                            border: OutlineInputBorder(borderRadius: BorderRadius.circular(10)),
+                            isDense: true,
+                          ),
+                          onChanged: (_) => setState(() {}),
+                        ),
+                      ),
+                    ],
+                  ),
+                  const SizedBox(height: 12),
+
+                  Row(
+                    children: [
+                      Expanded(
+                        child: TextFormField(
+                          controller: _otherFeesCtrl,
+                          keyboardType: const TextInputType.numberWithOptions(decimal: true),
+                          decoration: InputDecoration(
+                            labelText: 'Closing / Fixed Fees',
+                            prefixText: '₹ ',
+                            border: OutlineInputBorder(borderRadius: BorderRadius.circular(10)),
+                            isDense: true,
+                          ),
+                          onChanged: (_) => setState(() {}),
+                        ),
+                      ),
+                      const SizedBox(width: 10),
+                      Expanded(
+                        child: TextFormField(
+                          controller: _feeGstCtrl,
+                          keyboardType: const TextInputType.numberWithOptions(decimal: true),
+                          decoration: InputDecoration(
+                            labelText: 'GST on Fees (18%)',
+                            prefixText: '₹ ',
+                            border: OutlineInputBorder(borderRadius: BorderRadius.circular(10)),
+                            isDense: true,
+                          ),
+                          onChanged: (_) => setState(() {}),
+                        ),
+                      ),
+                    ],
+                  ),
+                  const SizedBox(height: 16),
+
+                  // Statutory Tax Deductions (TCS & TDS)
+                  const Text('Tax Withholdings (TCS & TDS)', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 14)),
+                  const SizedBox(height: 10),
+
+                  Row(
+                    children: [
+                      Expanded(
+                        child: TextFormField(
+                          controller: _tcsGstCtrl,
+                          keyboardType: const TextInputType.numberWithOptions(decimal: true),
+                          decoration: InputDecoration(
+                            labelText: 'GST TCS (1%)',
+                            prefixText: '₹ ',
+                            border: OutlineInputBorder(borderRadius: BorderRadius.circular(10)),
+                            isDense: true,
+                            helperText: 'Tax Asset Claimable in GST',
+                          ),
+                          onChanged: (_) => setState(() {}),
+                        ),
+                      ),
+                      const SizedBox(width: 10),
+                      Expanded(
+                        child: TextFormField(
+                          controller: _tdsCtrl,
+                          keyboardType: const TextInputType.numberWithOptions(decimal: true),
+                          decoration: InputDecoration(
+                            labelText: 'TDS u/s 194O (0.1%)',
+                            prefixText: '₹ ',
+                            border: OutlineInputBorder(borderRadius: BorderRadius.circular(10)),
+                            isDense: true,
+                            helperText: 'Claimable in Income Tax',
+                          ),
+                          onChanged: (_) => setState(() {}),
+                        ),
+                      ),
+                    ],
+                  ),
+                  const SizedBox(height: 16),
+
+                  // Net Payout Calculation Summary Box
+                  Container(
+                    padding: const EdgeInsets.all(14),
+                    decoration: BoxDecoration(
+                      color: const Color(0xFF10B981).withValues(alpha: 0.1),
+                      borderRadius: BorderRadius.circular(14),
+                      border: Border.all(color: const Color(0xFF10B981).withValues(alpha: 0.3)),
+                    ),
+                    child: Column(
+                      children: [
+                        Row(
+                          mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                          children: [
+                            const Text('Total Marketplace Deductions:', style: TextStyle(fontSize: 13, color: Colors.grey)),
+                            Text(
+                              '- ${formatCurrency.format(totalDeductions)}',
+                              style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 13, color: Colors.red),
+                            ),
+                          ],
+                        ),
+                        const Divider(height: 14),
+                        Row(
+                          mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                          children: [
+                            const Text('Net Bank Remittance Payout:', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 14)),
+                            Text(
+                              formatCurrency.format(netPayout),
+                              style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 18, color: Color(0xFF10B981)),
+                            ),
+                          ],
+                        ),
+                      ],
+                    ),
+                  ),
+                  const SizedBox(height: 16),
+
+                  // Bank & Settlement Reference Details
+                  const Text('Payout Deposit Details', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 14)),
+                  const SizedBox(height: 10),
+
+                  DropdownButtonFormField<int>(
+                    value: _selectedWalletId ?? (effectiveWallets.isNotEmpty ? effectiveWallets.first.id : null),
+                    decoration: InputDecoration(
+                      labelText: 'Bank / Payout Account',
+                      prefixIcon: const Icon(LucideIcons.landmark, size: 16),
+                      border: OutlineInputBorder(borderRadius: BorderRadius.circular(10)),
+                      isDense: true,
+                    ),
+                    items: effectiveWallets.map((w) {
+                      return DropdownMenuItem<int>(
+                        value: w.id,
+                        child: Text('${w.name} (${w.nature ?? "Bank"})', style: const TextStyle(fontSize: 13)),
+                      );
+                    }).toList(),
+                    onChanged: (val) => setState(() => _selectedWalletId = val),
+                  ),
+                  const SizedBox(height: 12),
+
+                  Row(
+                    children: [
+                      Expanded(
+                        child: TextFormField(
+                          controller: _settlementRefCtrl,
+                          decoration: InputDecoration(
+                            labelText: 'Bank UTR / Payout Ref',
+                            prefixIcon: const Icon(LucideIcons.hash, size: 16),
+                            border: OutlineInputBorder(borderRadius: BorderRadius.circular(10)),
+                            isDense: true,
+                          ),
+                        ),
+                      ),
+                      const SizedBox(width: 10),
+                      Expanded(
+                        child: InkWell(
+                          onTap: () async {
+                            final picked = await showDatePicker(
+                              context: context,
+                              initialDate: _settlementDate,
+                              firstDate: DateTime(2020),
+                              lastDate: DateTime.now().add(const Duration(days: 30)),
+                            );
+                            if (picked != null) setState(() => _settlementDate = picked);
+                          },
+                          child: InputDecorator(
+                            decoration: InputDecoration(
+                              labelText: 'Payout Date',
+                              prefixIcon: const Icon(LucideIcons.calendar, size: 16),
+                              border: OutlineInputBorder(borderRadius: BorderRadius.circular(10)),
+                              isDense: true,
+                            ),
+                            child: Text(formatDate.format(_settlementDate), style: const TextStyle(fontSize: 13)),
+                          ),
+                        ),
+                      ),
+                    ],
+                  ),
+                  const SizedBox(height: 12),
+
+                  TextFormField(
+                    controller: _notesCtrl,
+                    maxLines: 2,
+                    decoration: InputDecoration(
+                      labelText: 'Settlement Notes / Remarks (Optional)',
+                      prefixIcon: const Icon(LucideIcons.alignLeft, size: 16),
+                      border: OutlineInputBorder(borderRadius: BorderRadius.circular(10)),
+                      isDense: true,
+                    ),
+                  ),
+                  const SizedBox(height: 20),
+                ],
+              ),
+            ),
+          ),
+
+          // Submit Button
+          SizedBox(
+            width: double.infinity,
+            child: ElevatedButton.icon(
+              onPressed: _isLoading ? null : _submitSettlement,
+              icon: _isLoading
+                  ? const SizedBox(width: 16, height: 16, child: CircularProgressIndicator(strokeWidth: 2, color: Colors.white))
+                  : const Icon(LucideIcons.checkCheck, size: 18),
+              label: Text(
+                _isLoading ? 'Reconciling Payout...' : 'Confirm Settlement (${formatCurrency.format(netPayout)})',
+                style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 15),
+              ),
+              style: ElevatedButton.styleFrom(
+                backgroundColor: const Color(0xFF10B981),
+                foregroundColor: Colors.white,
+                padding: const EdgeInsets.symmetric(vertical: 14),
+                shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}

kifi-app/lib/features/sales/providers/credit_notes_provider.dart

@@ -0,0 +1,75 @@
+import 'dart:async';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:dio/dio.dart';
+import '../../../core/network/dio_client.dart';
+import '../domain/credit_note.dart';
+import 'invoices_provider.dart';
+
+class CreditNotesNotifier extends AsyncNotifier<List<CreditNote>> {
+  @override
+  FutureOr<List<CreditNote>> build() async {
+    return _fetchCreditNotes();
+  }
+
+  Future<List<CreditNote>> _fetchCreditNotes() async {
+    try {
+      final response = await DioClient().dio.get('/credit-notes');
+      if (response.statusCode == 200) {
+        final List<dynamic> data = response.data;
+        return data.map((e) => CreditNote.fromJson(e)).toList();
+      }
+      return [];
+    } catch (e) {
+      return [];
+    }
+  }
+
+  Future<void> refresh() async {
+    state = const AsyncValue.loading();
+    try {
+      final creditNotes = await _fetchCreditNotes();
+      state = AsyncValue.data(creditNotes);
+    } catch (e, stack) {
+      state = AsyncValue.error(e, stack);
+    }
+  }
+
+  Future<CreditNote?> createCreditNote(int invoiceId, CreditNote creditNote) async {
+    try {
+      final response = await DioClient().dio.post(
+        '/invoices/$invoiceId/credit-notes',
+        data: creditNote.toJson(),
+      );
+      await refresh();
+      ref.refresh(invoicesProvider);
+      if (response.data != null) {
+        return CreditNote.fromJson(response.data);
+      }
+      return null;
+    } catch (e) {
+      if (e is DioException) {
+        throw Exception(
+          'Failed to process return: ${e.response?.statusCode} - ${e.response?.data}',
+        );
+      }
+      throw Exception('Failed to process return: $e');
+    }
+  }
+}
+
+final creditNotesProvider =
+    AsyncNotifierProvider<CreditNotesNotifier, List<CreditNote>>(CreditNotesNotifier.new);
+
+final invoiceCreditNotesProvider =
+    FutureProvider.family<List<CreditNote>, int>((ref, invoiceId) async {
+  try {
+    final response = await DioClient().dio.get('/invoices/$invoiceId/credit-notes');
+    if (response.statusCode == 200) {
+      final List<dynamic> data = response.data;
+      return data.map((e) => CreditNote.fromJson(e)).toList();
+    }
+    return [];
+  } catch (e) {
+    return [];
+  }
+});

kifi-app/lib/features/sales/providers/marketplace_settlements_provider.dart

@@ -0,0 +1,78 @@
+import 'dart:async';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:dio/dio.dart';
+import '../../../core/network/dio_client.dart';
+import '../domain/marketplace_settlement.dart';
+import 'invoices_provider.dart';
+
+class MarketplaceSettlementsNotifier extends AsyncNotifier<List<MarketplaceSettlement>> {
+  @override
+  FutureOr<List<MarketplaceSettlement>> build() async {
+    return _fetchSettlements();
+  }
+
+  Future<List<MarketplaceSettlement>> _fetchSettlements() async {
+    try {
+      final response = await DioClient().dio.get('/marketplace-settlements');
+      if (response.statusCode == 200) {
+        final List<dynamic> data = response.data;
+        return data.map((e) => MarketplaceSettlement.fromJson(e)).toList();
+      }
+      return [];
+    } catch (e) {
+      return [];
+    }
+  }
+
+  Future<void> refresh() async {
+    state = const AsyncValue.loading();
+    try {
+      final settlements = await _fetchSettlements();
+      state = AsyncValue.data(settlements);
+    } catch (e, stack) {
+      state = AsyncValue.error(e, stack);
+    }
+  }
+
+  Future<MarketplaceSettlement?> createSettlement(int invoiceId, MarketplaceSettlement settlement) async {
+    try {
+      final response = await DioClient().dio.post(
+        '/invoices/$invoiceId/settlements',
+        data: settlement.toJson(),
+      );
+      await refresh();
+      ref.refresh(invoicesProvider);
+      if (response.data != null) {
+        return MarketplaceSettlement.fromJson(response.data);
+      }
+      return null;
+    } catch (e) {
+      if (e is DioException) {
+        throw Exception(
+          'Failed to record settlement: ${e.response?.statusCode} - ${e.response?.data}',
+        );
+      }
+      throw Exception('Failed to record settlement: $e');
+    }
+  }
+}
+
+final marketplaceSettlementsProvider =
+    AsyncNotifierProvider<MarketplaceSettlementsNotifier, List<MarketplaceSettlement>>(
+        MarketplaceSettlementsNotifier.new);
+
+final invoiceSettlementProvider =
+    FutureProvider.family<MarketplaceSettlement?, int>((ref, invoiceId) async {
+  try {
+    final response = await DioClient().dio.get('/invoices/$invoiceId/settlements');
+    if (response.statusCode == 200) {
+      final List<dynamic> data = response.data;
+      if (data.isNotEmpty) {
+        return MarketplaceSettlement.fromJson(data.first);
+      }
+    }
+    return null;
+  } catch (e) {
+    return null;
+  }
+});

kifi-app/lib/features/vendor/presentation/purchase_order_builder_screen.dart

@@ -788,7 +788,10 @@ class _PurchaseOrderBuilderScreenState
               builder: (context) {
                 final products = ref.watch(productsProvider).value ?? [];
                 final categories = ref.watch(productCategoriesProvider).value ?? [];
-                final businessState = ref.watch(businessProfileProvider).value?.stateId;
+                final businessProfile = ref.watch(businessProfileProvider).value;
+                final nature = (businessProfile?.natureOfBusiness ?? businessProfile?.industry ?? 'JEWELLERY').toUpperCase();
+                final isJewellery = nature == 'JEWELLERY';
+                final businessState = businessProfile?.stateId;
                 final vendorState = _selectedVendorId == null
                     ? null
                     : vendorsState.value?.where((v) => v.id == _selectedVendorId).firstOrNull?.stateId;
@@ -812,7 +815,7 @@ class _PurchaseOrderBuilderScreenState
 
                 final effectiveGstRate = (effectiveTaxable > 0 && taxTotal > 0)
                     ? (taxTotal / effectiveTaxable) * 100.0
-                    : (_items.isNotEmpty ? _items.first.gstRate : (isJewellery ? 3.0 : 18.0));
+                    : (_items.isNotEmpty ? _items.first.taxRate : (isJewellery ? 3.0 : 18.0));
                 final cgstRate = effectiveGstRate / 2.0;
                 final sgstRate = effectiveGstRate / 2.0;
                 final igstRate = effectiveGstRate;