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 [];
  }
});