removed unnecessary files

SESSION_HANDOFF.md

@@ -0,0 +1,42 @@
+# Session Handoff & Context
+
+**Date Saved**: June 7, 2026
+**Conversation ID**: 43f3aa27-9124-446e-9713-4e31e083b4f5
+
+## Project: Template Mapping Engine (OCR)
+A system designed to extract document layouts via OCR and allow users to map specific bounding box regions to template fields using a drag-and-drop UI. Future documents from the same vendor are automatically recognized and mapped using a heuristic template engine.
+
+## What Has Been Completed So Far
+
+### 1. Backend Startup & Dependency Fixes:
+- **Auto-Bootstrapping**: Updated `run_docengine.sh` and `run_backend.sh` to automatically set up virtual environments and install missing dependencies if key modules (`uvicorn`, `numpy`, etc.) are missing.
+- **Python 3.13 Compatibility**: Upgraded `paddlepaddle` in `docengine/requirements.txt` to `>=3.0.0` to support Python 3.13 on macOS ARM64. Added missing dependencies (`numpy`, `opencv-python-headless`, `pdf2image`) to `backend/requirements.txt`.
+- **CORS Config Fix**: Corrected a missing double-quote in `CORS_ORIGINS` in both `.env` and `.env.example` in `docengine/`.
+
+### 2. Backend Code Integrity & Framework Alignment:
+- **SQLAlchemy 2.0 / Imperative Mapping Fix**: Updated `user_roles_table` in `docengine/app/models/user.py` to use SQLAlchemy `Column` objects instead of `mapped_column`, preventing a database initialization crash.
+- **Structlog Parameter Fix**: Replaced the `event` keyword argument with `phase` in `docengine/app/events/handlers.py` to prevent a duplicate parameter `TypeError` from the structlog library.
+- **Optional Development Auth Bypass**: Modified `get_current_user` in `docengine/app/core/dependencies.py` to automatically fallback to the first database user (or a fake dev admin model) when no authorization token is supplied and `APP_ENV` is set to `"development"`. This prevents `401 Unauthorized` errors when testing endpoints locally.
+
+### 3. Frontend Angular Implementation:
+- **API Endpoint Alignments**: Removed the duplicate `/api` prefix from endpoints in `TemplateService.ts` (e.g. changing `${this.apiUrl}/api/documents/upload` to `${this.apiUrl}/documents/upload`). This resolves the `404 Not Found` error by aligning with the backend prefix `/api/v1/documents/upload`.
+
+---
+
+## Where to Pick Up Next
+1. **Initialize Database Tables**:
+   - The database currently lacks the necessary schema tables (evidenced by the error: `relation "admin.users" does not exist`).
+   - Run the setup command to build the tables and apply migrations:
+     ```bash
+     ./run_docengine.sh setup
+     ```
+2. **Retest Upload Flow**:
+   - Once database tables exist, perform a document upload from the Angular frontend to visually verify the OCR bounding boxes and layout mapper.
+3. **Verify Heuristic Template Recognition**:
+   - Test the template matching and layout coordinate storage workflows.
+
+---
+
+## How to Resume with AI Assistant
+To resume this session in a new chat, you can tell the AI:
+*"Please read `SESSION_HANDOFF.md` in the root of the OCR project to get context on the Template Engine we were building and the startup fixes, and let's continue."*

backend/.env

@@ -1,7 +1,7 @@
 DB_USER=postgres
-DB_PASSWORD=M@tr!x#149@dm!N
-DB_HOST=192.168.0.111
-DB_PORT=7925
+DB_PASSWORD=M@triXPostgr3s@6202
+DB_HOST=103.125.129.116
+DB_PORT=5432
 DB_NAME=ocr
 
 # Mail Configuration (Gmail)

backend/alembic.ini

@@ -0,0 +1,149 @@
+# A generic, single database configuration.
+
+[alembic]
+# path to migration scripts.
+# this is typically a path given in POSIX (e.g. forward slashes)
+# format, relative to the token %(here)s which refers to the location of this
+# ini file
+script_location = %(here)s/alembic
+
+# template used to generate migration file names; The default value is %%(rev)s_%%(slug)s
+# Uncomment the line below if you want the files to be prepended with date and time
+# see https://alembic.sqlalchemy.org/en/latest/tutorial.html#editing-the-ini-file
+# for all available tokens
+# file_template = %%(year)d_%%(month).2d_%%(day).2d_%%(hour).2d%%(minute).2d-%%(rev)s_%%(slug)s
+# Or organize into date-based subdirectories (requires recursive_version_locations = true)
+# file_template = %%(year)d/%%(month).2d/%%(day).2d_%%(hour).2d%%(minute).2d_%%(second).2d_%%(rev)s_%%(slug)s
+
+# sys.path path, will be prepended to sys.path if present.
+# defaults to the current working directory.  for multiple paths, the path separator
+# is defined by "path_separator" below.
+prepend_sys_path = .
+
+
+# timezone to use when rendering the date within the migration file
+# as well as the filename.
+# If specified, requires the tzdata library which can be installed by adding
+# `alembic[tz]` to the pip requirements.
+# string value is passed to ZoneInfo()
+# leave blank for localtime
+# timezone =
+
+# max length of characters to apply to the "slug" field
+# truncate_slug_length = 40
+
+# set to 'true' to run the environment during
+# the 'revision' command, regardless of autogenerate
+# revision_environment = false
+
+# set to 'true' to allow .pyc and .pyo files without
+# a source .py file to be detected as revisions in the
+# versions/ directory
+# sourceless = false
+
+# version location specification; This defaults
+# to <script_location>/versions.  When using multiple version
+# directories, initial revisions must be specified with --version-path.
+# The path separator used here should be the separator specified by "path_separator"
+# below.
+# version_locations = %(here)s/bar:%(here)s/bat:%(here)s/alembic/versions
+
+# path_separator; This indicates what character is used to split lists of file
+# paths, including version_locations and prepend_sys_path within configparser
+# files such as alembic.ini.
+# The default rendered in new alembic.ini files is "os", which uses os.pathsep
+# to provide os-dependent path splitting.
+#
+# Note that in order to support legacy alembic.ini files, this default does NOT
+# take place if path_separator is not present in alembic.ini.  If this
+# option is omitted entirely, fallback logic is as follows:
+#
+# 1. Parsing of the version_locations option falls back to using the legacy
+#    "version_path_separator" key, which if absent then falls back to the legacy
+#    behavior of splitting on spaces and/or commas.
+# 2. Parsing of the prepend_sys_path option falls back to the legacy
+#    behavior of splitting on spaces, commas, or colons.
+#
+# Valid values for path_separator are:
+#
+# path_separator = :
+# path_separator = ;
+# path_separator = space
+# path_separator = newline
+#
+# Use os.pathsep. Default configuration used for new projects.
+path_separator = os
+
+# set to 'true' to search source files recursively
+# in each "version_locations" directory
+# new in Alembic version 1.10
+# recursive_version_locations = false
+
+# the output encoding used when revision files
+# are written from script.py.mako
+# output_encoding = utf-8
+
+# database URL.  This is consumed by the user-maintained env.py script only.
+# other means of configuring database URLs may be customized within the env.py
+# file.
+sqlalchemy.url = driver://user:pass@localhost/dbname
+
+
+[post_write_hooks]
+# post_write_hooks defines scripts or Python functions that are run
+# on newly generated revision scripts.  See the documentation for further
+# detail and examples
+
+# format using "black" - use the console_scripts runner, against the "black" entrypoint
+# hooks = black
+# black.type = console_scripts
+# black.entrypoint = black
+# black.options = -l 79 REVISION_SCRIPT_FILENAME
+
+# lint with attempts to fix using "ruff" - use the module runner, against the "ruff" module
+# hooks = ruff
+# ruff.type = module
+# ruff.module = ruff
+# ruff.options = check --fix REVISION_SCRIPT_FILENAME
+
+# Alternatively, use the exec runner to execute a binary found on your PATH
+# hooks = ruff
+# ruff.type = exec
+# ruff.executable = ruff
+# ruff.options = check --fix REVISION_SCRIPT_FILENAME
+
+# Logging configuration.  This is also consumed by the user-maintained
+# env.py script only.
+[loggers]
+keys = root,sqlalchemy,alembic
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARNING
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARNING
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S

backend/alembic/README

@@ -0,0 +1 @@
+Generic single-database configuration.

backend/alembic/env.py

@@ -0,0 +1,87 @@
+from logging.config import fileConfig
+
+from sqlalchemy import engine_from_config
+from sqlalchemy import pool
+
+from alembic import context
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+import os
+import sys
+sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+from database import Base, DATABASE_URL
+import models.template_models
+
+target_metadata = Base.metadata
+config.set_main_option("sqlalchemy.url", DATABASE_URL.replace("%", "%%"))
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+
+def run_migrations_offline() -> None:
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online() -> None:
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    with connectable.connect() as connection:
+        context.configure(
+            connection=connection, 
+            target_metadata=target_metadata,
+            include_schemas=True,
+            version_table_schema='public'
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

backend/alembic/script.py.mako

@@ -0,0 +1,28 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision: str = ${repr(up_revision)}
+down_revision: Union[str, Sequence[str], None] = ${repr(down_revision)}
+branch_labels: Union[str, Sequence[str], None] = ${repr(branch_labels)}
+depends_on: Union[str, Sequence[str], None] = ${repr(depends_on)}
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    ${downgrades if downgrades else "pass"}

backend/alembic/versions/91b2545f5a30_add_templates_schema.py

@@ -0,0 +1,28 @@
+"""Add templates schema
+
+Revision ID: 91b2545f5a30
+Revises: 
+Create Date: 2026-06-01 16:28:57.181829
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+import os
+
+# revision identifiers, used by Alembic.
+revision: str = '91b2545f5a30'
+down_revision: Union[str, None] = None
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+def upgrade() -> None:
+    # Read and execute the SQL schema script
+    sql_path = os.path.join(os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))), 'sql', '01_templates_schema.sql')
+    with open(sql_path, 'r') as f:
+        sql = f.read()
+    op.execute(sql)
+
+def downgrade() -> None:
+    op.execute("DROP SCHEMA IF EXISTS templates CASCADE;")

backend/api/documents.py

@@ -0,0 +1,54 @@
+import json
+from fastapi import APIRouter, Depends, HTTPException, status, UploadFile, File
+from sqlalchemy.orm import Session
+from typing import List
+
+from database import get_db
+from models.template_models import TemplateDocument, DocumentLayout
+from schemas.template_schemas import DocumentSchema, DocumentLayoutSchema, TemplateRecognitionResult
+from engine.ocr.document_processor import DocumentProcessor
+from engine.recognition.template_engine import TemplateRecognitionEngine
+
+router = APIRouter(prefix="/api/documents", tags=["Documents"])
+
+@router.post("/upload", response_model=DocumentSchema, status_code=status.HTTP_201_CREATED)
+async def upload_document(file: UploadFile = File(...), db: Session = Depends(get_db)):
+    # 1. Create document record
+    content = await file.read()
+    file_hash = hash(content) # Simple hash for demo
+    
+    db_doc = TemplateDocument(
+        document_name=file.filename,
+        document_type=file.content_type,
+        file_name=file.filename,
+        file_hash=str(file_hash),
+        status="processing"
+    )
+    db.add(db_doc)
+    db.commit()
+    db.refresh(db_doc)
+    
+    # 2. Process File (OCR & Layout)
+    processor = DocumentProcessor(db)
+    processor.process_file(db_doc.pk_document_id, file.filename, content)
+    
+    db.refresh(db_doc)
+    return db_doc
+
+@router.get("/{document_id}", response_model=DocumentSchema)
+def get_document(document_id: int, db: Session = Depends(get_db)):
+    doc = db.query(TemplateDocument).filter(TemplateDocument.pk_document_id == document_id).first()
+    if not doc:
+        raise HTTPException(status_code=404, detail="Document not found")
+    return doc
+
+@router.get("/{document_id}/layout", response_model=List[DocumentLayoutSchema])
+def get_document_layout(document_id: int, db: Session = Depends(get_db)):
+    layouts = db.query(DocumentLayout).filter(DocumentLayout.fk_document_id == document_id).order_by(DocumentLayout.sequence_no).all()
+    return layouts
+
+@router.post("/{document_id}/recognize", response_model=TemplateRecognitionResult)
+def recognize_template(document_id: int, db: Session = Depends(get_db)):
+    engine = TemplateRecognitionEngine(db)
+    return engine.recognize_template(document_id)
+

backend/api/templates.py

@@ -0,0 +1,53 @@
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+from typing import List
+
+from database import get_db
+from schemas.template_schemas import (
+    TemplateCreate, TemplateSchema, 
+    TemplateFieldCreate, TemplateFieldSchema,
+    TemplateFieldMappingCreate, TemplateFieldMappingSchema
+)
+from services.template_service import TemplateService
+
+router = APIRouter(prefix="/api/templates", tags=["Templates"])
+
+@router.post("", response_model=TemplateSchema, status_code=status.HTTP_201_CREATED)
+def create_template(template_data: TemplateCreate, db: Session = Depends(get_db)):
+    service = TemplateService(db)
+    return service.create_template(template_data)
+
+@router.get("", response_model=List[TemplateSchema])
+def get_templates(skip: int = 0, limit: int = 100, db: Session = Depends(get_db)):
+    service = TemplateService(db)
+    return service.get_all_templates(skip, limit)
+
+@router.get("/{template_id}", response_model=TemplateSchema)
+def get_template(template_id: int, db: Session = Depends(get_db)):
+    service = TemplateService(db)
+    template = service.get_template(template_id)
+    if not template:
+        raise HTTPException(status_code=404, detail="Template not found")
+    return template
+
+@router.delete("/{template_id}", status_code=status.HTTP_204_NO_CONTENT)
+def delete_template(template_id: int, db: Session = Depends(get_db)):
+    service = TemplateService(db)
+    if not service.delete_template(template_id):
+        raise HTTPException(status_code=404, detail="Template not found")
+    return None
+
+@router.post("/{template_id}/fields", response_model=TemplateFieldSchema, status_code=status.HTTP_201_CREATED)
+def add_template_field(template_id: int, field_data: TemplateFieldCreate, db: Session = Depends(get_db)):
+    service = TemplateService(db)
+    # Check if template exists
+    if not service.get_template(template_id):
+        raise HTTPException(status_code=404, detail="Template not found")
+    return service.add_template_field(template_id, field_data)
+
+@router.post("/{template_id}/mappings/save", response_model=List[TemplateFieldMappingSchema])
+def save_mappings(template_id: int, mappings: List[TemplateFieldMappingCreate], db: Session = Depends(get_db)):
+    service = TemplateService(db)
+    if not service.get_template(template_id):
+        raise HTTPException(status_code=404, detail="Template not found")
+    return service.save_mapping(template_id, mappings)

backend/engine/ocr/document_processor.py

@@ -0,0 +1,217 @@
+import io
+import re
+from typing import List, Dict, Any
+import numpy as np
+import cv2
+import pdfplumber
+import pytesseract
+from PIL import Image
+from pdf2image import convert_from_bytes
+from sqlalchemy.orm import Session
+from models.template_models import DocumentLayout, TemplateDocument
+from schemas.template_schemas import DocumentLayoutSchema
+
+class DocumentProcessor:
+    def __init__(self, db: Session):
+        self.db = db
+
+    def process_file(self, document_id: int, filename: str, file_bytes: bytes) -> List[DocumentLayout]:
+        document = self.db.query(TemplateDocument).filter(TemplateDocument.pk_document_id == document_id).first()
+        if not document:
+            raise ValueError("Document not found")
+            
+        layouts = []
+        if filename.lower().endswith('.pdf'):
+            layouts = self._process_pdf(document_id, file_bytes)
+        elif filename.lower().endswith(('.png', '.jpg', '.jpeg', '.tiff')):
+            layouts = self._process_image(document_id, file_bytes)
+            
+        # Update page count
+        if layouts:
+            document.page_count = max([l.page_no for l in layouts])
+            document.status = "processed"
+            self.db.commit()
+            
+        return layouts
+
+    def _process_pdf(self, document_id: int, file_bytes: bytes) -> List[DocumentLayout]:
+        layouts = []
+        try:
+            with pdfplumber.open(io.BytesIO(file_bytes)) as pdf:
+                sequence_no = 1
+                for page_no, page in enumerate(pdf.pages, start=1):
+                    # Check if it has text
+                    text = page.extract_text()
+                    if text and text.strip():
+                        # Extract words with bounding boxes
+                        words = page.extract_words()
+                        
+                        # Group words into blocks using simple proximity heuristics
+                        blocks = self._group_words_to_blocks(words, page.width, page.height)
+                        
+                        for block in blocks:
+                            db_layout = DocumentLayout(
+                                fk_document_id=document_id,
+                                page_no=page_no,
+                                text_value=block['text'],
+                                block_type=block['type'],
+                                x_coordinate=block['x0'],
+                                y_coordinate=block['top'],
+                                width=block['x1'] - block['x0'],
+                                height=block['bottom'] - block['top'],
+                                confidence=100.0,
+                                sequence_no=sequence_no
+                            )
+                            self.db.add(db_layout)
+                            layouts.append(db_layout)
+                            sequence_no += 1
+                    else:
+                        # Scanned PDF page -> convert to image and process
+                        # Handled separately to avoid complexity in this mock
+                        pass
+        except Exception as e:
+            print(f"Error processing PDF with pdfplumber: {e}")
+            
+        if not layouts:
+             # Fallback to image-based processing for scanned PDFs
+             images = convert_from_bytes(file_bytes, dpi=300)
+             sequence_no = 1
+             for page_no, img in enumerate(images, start=1):
+                  img_byte_arr = io.BytesIO()
+                  img.save(img_byte_arr, format='PNG')
+                  page_layouts = self._process_image(document_id, img_byte_arr.getvalue(), page_no=page_no, start_sequence=sequence_no)
+                  layouts.extend(page_layouts)
+                  sequence_no += len(page_layouts)
+                  
+        self.db.commit()
+        return layouts
+
+    def _process_image(self, document_id: int, file_bytes: bytes, page_no: int = 1, start_sequence: int = 1) -> List[DocumentLayout]:
+        layouts = []
+        try:
+            # Decode image
+            nparr = np.frombuffer(file_bytes, np.uint8)
+            img = cv2.imdecode(nparr, cv2.IMREAD_COLOR)
+            
+            # Preprocessing
+            gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
+            # Denoise & Threshold
+            gray = cv2.medianBlur(gray, 3)
+            gray = cv2.threshold(gray, 0, 255, cv2.THRESH_BINARY + cv2.THRESH_OTSU)[1]
+            
+            # OCR using PyTesseract with bounding boxes
+            data = pytesseract.image_to_data(gray, output_type=pytesseract.Output.DICT)
+            
+            sequence_no = start_sequence
+            
+            # Grouping words into lines/blocks simplified
+            height, width = gray.shape
+            blocks = self._tesseract_data_to_blocks(data, width, height)
+            
+            for block in blocks:
+                db_layout = DocumentLayout(
+                    fk_document_id=document_id,
+                    page_no=page_no,
+                    text_value=block['text'],
+                    block_type=block['type'],
+                    x_coordinate=block['x'],
+                    y_coordinate=block['y'],
+                    width=block['w'],
+                    height=block['h'],
+                    confidence=block['conf'],
+                    sequence_no=sequence_no
+                )
+                self.db.add(db_layout)
+                layouts.append(db_layout)
+                sequence_no += 1
+                
+        except Exception as e:
+            print(f"Error processing image with tesseract: {e}")
+            
+        self.db.commit()
+        return layouts
+
+    def _group_words_to_blocks(self, words: List[Dict], page_width: float, page_height: float) -> List[Dict]:
+        """Group nearby words into logical blocks and classify them."""
+        # Extremely simplified grouping by Y coordinate proximity
+        blocks = []
+        if not words:
+            return blocks
+            
+        # Sort words by Y then X
+        words.sort(key=lambda w: (w['top'], w['x0']))
+        
+        current_block = {
+            'text': words[0]['text'],
+            'x0': words[0]['x0'],
+            'top': words[0]['top'],
+            'x1': words[0]['x1'],
+            'bottom': words[0]['bottom']
+        }
+        
+        for word in words[1:]:
+            # If word is roughly on the same line (y diff is small) and close horizontally
+            if abs(word['top'] - current_block['top']) < 10 and (word['x0'] - current_block['x1']) < 50:
+                current_block['text'] += ' ' + word['text']
+                current_block['x1'] = word['x1']
+                current_block['top'] = min(current_block['top'], word['top'])
+                current_block['bottom'] = max(current_block['bottom'], word['bottom'])
+            else:
+                current_block['type'] = self._classify_block(current_block, page_height)
+                blocks.append(current_block)
+                current_block = {
+                    'text': word['text'],
+                    'x0': word['x0'],
+                    'top': word['top'],
+                    'x1': word['x1'],
+                    'bottom': word['bottom']
+                }
+        
+        current_block['type'] = self._classify_block(current_block, page_height)
+        blocks.append(current_block)
+        return blocks
+
+    def _tesseract_data_to_blocks(self, data: Dict, page_width: float, page_height: float) -> List[Dict]:
+        blocks = []
+        n_boxes = len(data['text'])
+        current_line = []
+        
+        for i in range(n_boxes):
+            if int(data['conf'][i]) > 10 and data['text'][i].strip():
+                # We can group by line_num
+                blocks.append({
+                    'text': data['text'][i],
+                    'x': data['left'][i],
+                    'y': data['top'][i],
+                    'w': data['width'][i],
+                    'h': data['height'][i],
+                    'conf': float(data['conf'][i]),
+                    'type': self._classify_block({'top': data['top'][i], 'text': data['text'][i]}, page_height)
+                })
+        return blocks
+
+    def _classify_block(self, block: Dict, page_height: float) -> str:
+        y = block.get('top') or block.get('y') or 0
+        text = block.get('text', '').lower()
+        
+        if y < page_height * 0.15:
+            return "HEADER"
+        elif y > page_height * 0.85:
+            return "FOOTER"
+            
+        if "total" in text:
+            return "TOTAL"
+        if "tax" in text or "gst" in text or "vat" in text:
+            return "TAX"
+        if re.search(r'\b(vendor|from)\b', text):
+            return "VENDOR"
+        if re.search(r'\b(bill to|sold to)\b', text):
+            return "BILL_TO"
+        if re.search(r'\b(ship to)\b', text):
+            return "SHIP_TO"
+            
+        # Very naive fallback for table check
+        if re.search(r'\b(qty|rate|amount|price|item)\b', text):
+            return "TABLE_HEADER"
+            
+        return "TEXT"

backend/engine/recognition/template_engine.py

@@ -0,0 +1,174 @@
+import hashlib
+import json
+from typing import List, Dict, Any, Tuple
+from sqlalchemy.orm import Session
+from models.template_models import Template, TemplateDocument, DocumentLayout, TemplateRecognitionHistory
+from schemas.template_schemas import TemplateRecognitionResult
+
+class TemplateRecognitionEngine:
+    def __init__(self, db: Session):
+        self.db = db
+        
+    def generate_fingerprint(self, layouts: List[DocumentLayout]) -> str:
+        """
+        Generate a structural fingerprint based on the document's layout.
+        We use relative positions of HEADER, VENDOR, TABLE_HEADER blocks.
+        """
+        key_blocks = []
+        for layout in layouts:
+            if layout.block_type in ["HEADER", "VENDOR", "TABLE_HEADER", "TOTAL"]:
+                key_blocks.append({
+                    "type": layout.block_type,
+                    "text": layout.text_value[:50] if layout.text_value else "", # first 50 chars
+                    "rx": round(float(layout.x_coordinate) / 100) if layout.x_coordinate else 0, # relative bucket x
+                    "ry": round(float(layout.y_coordinate) / 100) if layout.y_coordinate else 0  # relative bucket y
+                })
+        
+        # Sort top to bottom, left to right
+        key_blocks.sort(key=lambda b: (b['ry'], b['rx']))
+        
+        fingerprint_data = json.dumps(key_blocks)
+        return hashlib.sha256(fingerprint_data.encode('utf-8')).hexdigest()
+
+    def recognize_template(self, document_id: int) -> TemplateRecognitionResult:
+        """
+        Matches a document against existing templates using a 4-level weighted score:
+        Level 1: Vendor Match (40%)
+        Level 2: Header Similarity (20%)
+        Level 3: Layout/Fingerprint Similarity (20%)
+        Level 4: Coordinate Similarity (20%)
+        Threshold: 85%
+        """
+        layouts = self.db.query(DocumentLayout).filter(DocumentLayout.fk_document_id == document_id).all()
+        if not layouts:
+            return TemplateRecognitionResult(templateMatched=False)
+            
+        doc_fingerprint = self.generate_fingerprint(layouts)
+        
+        # Extract features for scoring
+        doc_vendor = self._extract_vendor_name(layouts)
+        doc_headers = self._extract_headers(layouts)
+        
+        templates = self.db.query(Template).filter(Template.active_flag == True).all()
+        best_match = None
+        highest_score = 0
+        
+        for template in templates:
+            score = 0.0
+            
+            # Level 1: Fingerprint Exact Match (counts for Layout + Vendor + Header if exact)
+            if template.template_fingerprint == doc_fingerprint:
+                score += 100.0
+            else:
+                # Need to load template sample mapping to compare heuristics
+                # In a real system, we'd compare against the mapped fields' coordinates
+                score += self._calculate_heuristic_score(template, doc_vendor, doc_headers, layouts)
+                
+            if score > highest_score:
+                highest_score = score
+                best_match = template
+                
+        # Store history
+        if best_match:
+            history = TemplateRecognitionHistory(
+                fk_template_id=best_match.pk_template_id,
+                fk_document_id=document_id,
+                recognition_score=highest_score,
+                matched_flag=(highest_score >= 85.0)
+            )
+            self.db.add(history)
+            self.db.commit()
+            
+        if best_match and highest_score >= 85.0:
+            extracted_fields = self._auto_map_fields(best_match, layouts)
+            return TemplateRecognitionResult(
+                templateMatched=True,
+                templateId=best_match.pk_template_id,
+                confidence=highest_score,
+                extractedFields=extracted_fields
+            )
+            
+        return TemplateRecognitionResult(templateMatched=False)
+
+    def _extract_vendor_name(self, layouts: List[DocumentLayout]) -> str:
+        for layout in layouts:
+            if layout.block_type == "VENDOR":
+                return layout.text_value.lower()
+        return ""
+        
+    def _extract_headers(self, layouts: List[DocumentLayout]) -> List[str]:
+        headers = []
+        for layout in layouts:
+            if layout.block_type == "TABLE_HEADER" and layout.text_value:
+                headers.append(layout.text_value.lower())
+        return headers
+
+    def _calculate_heuristic_score(self, template: Template, doc_vendor: str, doc_headers: List[str], layouts: List[DocumentLayout]) -> float:
+        score = 0.0
+        
+        # This requires the template to have some stored metadata or we check its fields
+        # E.g., if template has a field "Vendor Name" mapped to a specific text
+        
+        # 1. Vendor Match (40%)
+        # For this mockup, we check if the template name matches the vendor
+        if template.template_name.lower() in doc_vendor or doc_vendor in template.template_name.lower():
+            score += 40.0
+            
+        # 2. Header Similarity (20%)
+        # Check if template fields exist that match doc_headers
+        field_labels = [f.field_label.lower() for f in template.fields]
+        header_matches = sum(1 for h in doc_headers if any(h in fl or fl in h for fl in field_labels))
+        if len(doc_headers) > 0:
+             score += (header_matches / len(doc_headers)) * 20.0
+             
+        # 3. Layout / Coordinate Similarity
+        # We can check the template's previous mappings coordinates against current document
+        # If coordinates are within a tolerance, we add score
+        mapping_count = 0
+        match_count = 0
+        for mapping in template.mappings:
+            mapping_count += 1
+            # Find a layout block in current document that is near mapping coordinates
+            for layout in layouts:
+                if layout.page_no == mapping.page_no:
+                    # check distance
+                    if mapping.x_coordinate and mapping.y_coordinate and layout.x_coordinate and layout.y_coordinate:
+                        dx = abs(float(mapping.x_coordinate) - float(layout.x_coordinate))
+                        dy = abs(float(mapping.y_coordinate) - float(layout.y_coordinate))
+                        if dx < 50 and dy < 20: # arbitrary tolerance
+                            match_count += 1
+                            break
+        
+        if mapping_count > 0:
+            coord_score = (match_count / mapping_count) * 40.0 # Layout 20% + Coord 20%
+            score += coord_score
+            
+        return score
+
+    def _auto_map_fields(self, template: Template, layouts: List[DocumentLayout]) -> List[dict]:
+        extracted = []
+        for mapping in template.mappings:
+            # Find closest block in new document
+            best_block = None
+            min_dist = float('inf')
+            
+            for layout in layouts:
+                if layout.page_no == mapping.page_no:
+                    if mapping.x_coordinate and mapping.y_coordinate and layout.x_coordinate and layout.y_coordinate:
+                        dx = abs(float(mapping.x_coordinate) - float(layout.x_coordinate))
+                        dy = abs(float(mapping.y_coordinate) - float(layout.y_coordinate))
+                        dist = dx**2 + dy**2
+                        if dist < min_dist and dist < 5000: # tolerance squared
+                            min_dist = dist
+                            best_block = layout
+                            
+            if best_block:
+                extracted.append({
+                    "field_id": mapping.fk_template_field_id,
+                    "field_label": mapping.field.field_label if mapping.field else "",
+                    "value": best_block.text_value,
+                    "confidence": 95.0, # arbitrary high confidence for coordinate match
+                    "layout_id": best_block.pk_document_data_id
+                })
+                
+        return extracted

backend/main.py

@@ -48,6 +48,10 @@ from database import get_db, Email, Vendor, Document
 from scheduler import start_scheduler, stop_scheduler
 from mail_service import fetch_and_store_emails
 
+# Import the new routers
+from api.templates import router as templates_router
+from api.documents import router as documents_router
+
 # Lifespan for Scheduler
 @asynccontextmanager
 async def lifespan(app: FastAPI):
@@ -59,6 +63,10 @@ async def lifespan(app: FastAPI):
 
 app = FastAPI(lifespan=lifespan)
 
+# Include Routers
+app.include_router(templates_router)
+app.include_router(documents_router)
+
 # CORS configuration
 origins = [
     "http://localhost",

backend/models/template_models.py

@@ -0,0 +1,105 @@
+from sqlalchemy import Column, Integer, String, Text, DateTime, Boolean, ForeignKey, Numeric
+from sqlalchemy.sql import func
+from sqlalchemy.orm import relationship
+from database import Base
+
+class TemplateDocument(Base):
+    __tablename__ = "documents"
+    __table_args__ = {"schema": "templates"}
+    
+    pk_document_id = Column(Integer, primary_key=True, index=True)
+    document_name = Column(String(500))
+    document_type = Column(String(100))
+    file_name = Column(String(500))
+    file_hash = Column(String(500), index=True)
+    page_count = Column(Integer)
+    status = Column(String(50))
+    created_at = Column(DateTime, server_default=func.now())
+    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now())
+    
+    # Relationships
+    layouts = relationship("DocumentLayout", back_populates="document", cascade="all, delete")
+
+class DocumentLayout(Base):
+    __tablename__ = "document_layout"
+    __table_args__ = {"schema": "templates"}
+    
+    pk_document_data_id = Column(Integer, primary_key=True, index=True)
+    fk_document_id = Column(Integer, ForeignKey("templates.documents.pk_document_id", ondelete="CASCADE"), nullable=False, index=True)
+    page_no = Column(Integer, nullable=False, index=True)
+    text_value = Column(Text)
+    block_type = Column(String(100))
+    parent_block_id = Column(Integer, ForeignKey("templates.document_layout.pk_document_data_id", ondelete="SET NULL"))
+    x_coordinate = Column(Numeric)
+    y_coordinate = Column(Numeric)
+    width = Column(Numeric)
+    height = Column(Numeric)
+    confidence = Column(Numeric)
+    sequence_no = Column(Integer)
+    layout_path = Column(Text)
+    created_at = Column(DateTime, server_default=func.now())
+    
+    document = relationship("TemplateDocument", back_populates="layouts")
+    parent = relationship("DocumentLayout", remote_side=[pk_document_data_id])
+    mappings = relationship("TemplateFieldMapping", back_populates="document_layout", cascade="all, delete")
+
+class Template(Base):
+    __tablename__ = "templates"
+    __table_args__ = {"schema": "templates"}
+    
+    pk_template_id = Column(Integer, primary_key=True, index=True)
+    template_name = Column(String(255), nullable=False, index=True)
+    template_fingerprint = Column(Text)
+    active_flag = Column(Boolean, default=True)
+    created_at = Column(DateTime, server_default=func.now())
+    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now())
+    
+    fields = relationship("TemplateField", back_populates="template", cascade="all, delete")
+    mappings = relationship("TemplateFieldMapping", back_populates="template", cascade="all, delete")
+
+class TemplateField(Base):
+    __tablename__ = "template_fields"
+    __table_args__ = {"schema": "templates"}
+    
+    pk_template_field_id = Column(Integer, primary_key=True, index=True)
+    fk_template_id = Column(Integer, ForeignKey("templates.templates.pk_template_id", ondelete="CASCADE"), nullable=False, index=True)
+    field_label = Column(String(255), nullable=False)
+    field_type = Column(String(100), nullable=False)
+    display_order = Column(Integer)
+    required_flag = Column(Boolean, default=False)
+    created_at = Column(DateTime, server_default=func.now())
+    
+    template = relationship("Template", back_populates="fields")
+    mappings = relationship("TemplateFieldMapping", back_populates="field", cascade="all, delete")
+
+class TemplateFieldMapping(Base):
+    __tablename__ = "template_fields_mapping"
+    __table_args__ = {"schema": "templates"}
+    
+    pk_mapping_id = Column(Integer, primary_key=True, index=True)
+    fk_template_id = Column(Integer, ForeignKey("templates.templates.pk_template_id", ondelete="CASCADE"), nullable=False, index=True)
+    fk_template_field_id = Column(Integer, ForeignKey("templates.template_fields.pk_template_field_id", ondelete="CASCADE"), nullable=False, index=True)
+    fk_document_data_id = Column(Integer, ForeignKey("templates.document_layout.pk_document_data_id", ondelete="SET NULL"))
+    page_no = Column(Integer)
+    x_coordinate = Column(Numeric)
+    y_coordinate = Column(Numeric)
+    width = Column(Numeric)
+    height = Column(Numeric)
+    mapping_confidence = Column(Numeric)
+    layout_path = Column(Text)
+    created_at = Column(DateTime, server_default=func.now())
+    
+    template = relationship("Template", back_populates="mappings")
+    field = relationship("TemplateField", back_populates="mappings")
+    document_layout = relationship("DocumentLayout", back_populates="mappings")
+
+class TemplateRecognitionHistory(Base):
+    __tablename__ = "template_recognition_history"
+    __table_args__ = {"schema": "templates"}
+    
+    pk_history_id = Column(Integer, primary_key=True, index=True)
+    fk_template_id = Column(Integer, ForeignKey("templates.templates.pk_template_id", ondelete="CASCADE"), nullable=False)
+    fk_document_id = Column(Integer, ForeignKey("templates.documents.pk_document_id", ondelete="CASCADE"), nullable=False, index=True)
+    recognition_score = Column(Numeric)
+    matched_flag = Column(Boolean)
+    created_at = Column(DateTime, server_default=func.now())

backend/repositories/template_repository.py

@@ -0,0 +1,75 @@
+from sqlalchemy.orm import Session
+from sqlalchemy import desc
+from models.template_models import Template, TemplateField, TemplateFieldMapping, TemplateRecognitionHistory
+from schemas.template_schemas import TemplateCreate, TemplateFieldCreate, TemplateFieldMappingCreate
+
+class TemplateRepository:
+    def __init__(self, db: Session):
+        self.db = db
+
+    def get_template(self, template_id: int):
+        return self.db.query(Template).filter(Template.pk_template_id == template_id).first()
+
+    def get_templates(self, skip: int = 0, limit: int = 100):
+        return self.db.query(Template).offset(skip).limit(limit).all()
+
+    def create_template(self, template_data: TemplateCreate):
+        db_template = Template(template_name=template_data.template_name)
+        self.db.add(db_template)
+        self.db.commit()
+        self.db.refresh(db_template)
+        
+        # Create fields if provided
+        for field in template_data.fields:
+            db_field = TemplateField(
+                fk_template_id=db_template.pk_template_id,
+                field_label=field.field_label,
+                field_type=field.field_type,
+                display_order=field.display_order,
+                required_flag=field.required_flag
+            )
+            self.db.add(db_field)
+            
+        self.db.commit()
+        self.db.refresh(db_template)
+        return db_template
+
+    def add_template_field(self, template_id: int, field_data: TemplateFieldCreate):
+        db_field = TemplateField(
+            fk_template_id=template_id,
+            field_label=field_data.field_label,
+            field_type=field_data.field_type,
+            display_order=field_data.display_order,
+            required_flag=field_data.required_flag
+        )
+        self.db.add(db_field)
+        self.db.commit()
+        self.db.refresh(db_field)
+        return db_field
+
+    def delete_template(self, template_id: int):
+        template = self.get_template(template_id)
+        if template:
+            self.db.delete(template)
+            self.db.commit()
+            return True
+        return False
+
+    def save_mapping(self, template_id: int, mappings: list[TemplateFieldMappingCreate]):
+        saved_mappings = []
+        for mapping in mappings:
+            db_mapping = TemplateFieldMapping(
+                fk_template_id=template_id,
+                fk_template_field_id=mapping.fk_template_field_id,
+                fk_document_data_id=mapping.fk_document_data_id,
+                page_no=mapping.page_no,
+                x_coordinate=mapping.x_coordinate,
+                y_coordinate=mapping.y_coordinate,
+                width=mapping.width,
+                height=mapping.height,
+                mapping_confidence=mapping.mapping_confidence
+            )
+            self.db.add(db_mapping)
+            saved_mappings.append(db_mapping)
+        self.db.commit()
+        return saved_mappings

backend/requirements.txt

@@ -11,3 +11,7 @@ apscheduler
 python-dotenv
 pdfplumber
 ollama
+numpy
+opencv-python-headless
+pdf2image
+

backend/schemas/template_schemas.py

@@ -0,0 +1,80 @@
+from pydantic import BaseModel, ConfigDict
+from typing import List, Optional
+from datetime import datetime
+
+# Common
+class BaseSchema(BaseModel):
+    model_config = ConfigDict(from_attributes=True)
+
+# Document
+class DocumentLayoutSchema(BaseSchema):
+    pk_document_data_id: int
+    fk_document_id: int
+    page_no: int
+    text_value: Optional[str]
+    block_type: Optional[str]
+    parent_block_id: Optional[int]
+    x_coordinate: Optional[float]
+    y_coordinate: Optional[float]
+    width: Optional[float]
+    height: Optional[float]
+    confidence: Optional[float]
+    sequence_no: Optional[int]
+
+class DocumentSchema(BaseSchema):
+    pk_document_id: int
+    document_name: Optional[str]
+    document_type: Optional[str]
+    file_name: Optional[str]
+    page_count: Optional[int]
+    status: Optional[str]
+    created_at: datetime
+    layouts: List[DocumentLayoutSchema] = []
+
+# Template Field
+class TemplateFieldCreate(BaseSchema):
+    field_label: str
+    field_type: str
+    display_order: Optional[int] = 0
+    required_flag: Optional[bool] = False
+
+class TemplateFieldSchema(TemplateFieldCreate):
+    pk_template_field_id: int
+    fk_template_id: int
+    created_at: datetime
+
+# Template Field Mapping
+class TemplateFieldMappingCreate(BaseSchema):
+    fk_template_field_id: int
+    fk_document_data_id: Optional[int] = None
+    page_no: Optional[int] = None
+    x_coordinate: Optional[float] = None
+    y_coordinate: Optional[float] = None
+    width: Optional[float] = None
+    height: Optional[float] = None
+    mapping_confidence: Optional[float] = None
+
+class TemplateFieldMappingSchema(TemplateFieldMappingCreate):
+    pk_mapping_id: int
+    fk_template_id: int
+    created_at: datetime
+
+# Template
+class TemplateCreate(BaseSchema):
+    template_name: str
+    fields: Optional[List[TemplateFieldCreate]] = []
+
+class TemplateSchema(BaseSchema):
+    pk_template_id: int
+    template_name: str
+    template_fingerprint: Optional[str] = None
+    active_flag: bool
+    created_at: datetime
+    fields: List[TemplateFieldSchema] = []
+    mappings: List[TemplateFieldMappingSchema] = []
+
+class TemplateRecognitionResult(BaseSchema):
+    templateMatched: bool
+    templateId: Optional[int] = None
+    confidence: Optional[float] = None
+    extractedFields: List[dict] = []

backend/services/template_service.py

@@ -0,0 +1,25 @@
+from sqlalchemy.orm import Session
+from schemas.template_schemas import TemplateCreate, TemplateFieldCreate, TemplateFieldMappingCreate
+from repositories.template_repository import TemplateRepository
+
+class TemplateService:
+    def __init__(self, db: Session):
+        self.repository = TemplateRepository(db)
+
+    def get_template(self, template_id: int):
+        return self.repository.get_template(template_id)
+
+    def get_all_templates(self, skip: int = 0, limit: int = 100):
+        return self.repository.get_templates(skip, limit)
+
+    def create_template(self, template_data: TemplateCreate):
+        return self.repository.create_template(template_data)
+
+    def add_template_field(self, template_id: int, field_data: TemplateFieldCreate):
+        return self.repository.add_template_field(template_id, field_data)
+
+    def delete_template(self, template_id: int):
+        return self.repository.delete_template(template_id)
+
+    def save_mapping(self, template_id: int, mappings: list[TemplateFieldMappingCreate]):
+        return self.repository.save_mapping(template_id, mappings)

backend/sql/01_templates_schema.sql

@@ -0,0 +1,107 @@
+-- Schema for Template Engine
+CREATE SCHEMA IF NOT EXISTS templates;
+
+-- 1. documents table
+CREATE TABLE IF NOT EXISTS templates.documents (
+    pk_document_id BIGSERIAL PRIMARY KEY,
+    document_name VARCHAR(500),
+    document_type VARCHAR(100),
+    file_name VARCHAR(500),
+    file_hash VARCHAR(500),
+    page_count INTEGER,
+    status VARCHAR(50),
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+-- Index for quick lookups
+CREATE INDEX idx_documents_hash ON templates.documents(file_hash);
+
+-- 2. document_layout table
+CREATE TABLE IF NOT EXISTS templates.document_layout (
+    pk_document_data_id BIGSERIAL PRIMARY KEY,
+    fk_document_id BIGINT NOT NULL,
+    page_no INTEGER NOT NULL,
+    text_value TEXT,
+    block_type VARCHAR(100),
+    parent_block_id BIGINT,
+    x_coordinate NUMERIC,
+    y_coordinate NUMERIC,
+    width NUMERIC,
+    height NUMERIC,
+    confidence NUMERIC,
+    sequence_no INTEGER,
+    layout_path TEXT,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    
+    CONSTRAINT fk_dl_document FOREIGN KEY (fk_document_id) REFERENCES templates.documents(pk_document_id) ON DELETE CASCADE,
+    CONSTRAINT fk_dl_parent FOREIGN KEY (parent_block_id) REFERENCES templates.document_layout(pk_document_data_id) ON DELETE SET NULL
+);
+
+CREATE INDEX idx_doc_layout_doc_id ON templates.document_layout(fk_document_id);
+CREATE INDEX idx_doc_layout_page ON templates.document_layout(page_no);
+
+-- 3. templates table
+CREATE TABLE IF NOT EXISTS templates.templates (
+    pk_template_id BIGSERIAL PRIMARY KEY,
+    template_name VARCHAR(255) NOT NULL,
+    template_fingerprint TEXT,
+    active_flag BOOLEAN DEFAULT TRUE,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX idx_templates_name ON templates.templates(template_name);
+
+-- 4. template_fields table
+CREATE TABLE IF NOT EXISTS templates.template_fields (
+    pk_template_field_id BIGSERIAL PRIMARY KEY,
+    fk_template_id BIGINT NOT NULL,
+    field_label VARCHAR(255) NOT NULL,
+    field_type VARCHAR(100) NOT NULL,
+    display_order INTEGER,
+    required_flag BOOLEAN DEFAULT FALSE,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    
+    CONSTRAINT fk_tf_template FOREIGN KEY (fk_template_id) REFERENCES templates.templates(pk_template_id) ON DELETE CASCADE
+);
+
+CREATE INDEX idx_template_fields_tmpl_id ON templates.template_fields(fk_template_id);
+
+-- 5. template_fields_mapping table
+CREATE TABLE IF NOT EXISTS templates.template_fields_mapping (
+    pk_mapping_id BIGSERIAL PRIMARY KEY,
+    fk_template_id BIGINT NOT NULL,
+    fk_template_field_id BIGINT NOT NULL,
+    fk_document_data_id BIGINT,
+    page_no INTEGER,
+    x_coordinate NUMERIC,
+    y_coordinate NUMERIC,
+    width NUMERIC,
+    height NUMERIC,
+    mapping_confidence NUMERIC,
+    layout_path TEXT,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    
+    CONSTRAINT fk_tfm_template FOREIGN KEY (fk_template_id) REFERENCES templates.templates(pk_template_id) ON DELETE CASCADE,
+    CONSTRAINT fk_tfm_field FOREIGN KEY (fk_template_field_id) REFERENCES templates.template_fields(pk_template_field_id) ON DELETE CASCADE,
+    CONSTRAINT fk_tfm_doc_data FOREIGN KEY (fk_document_data_id) REFERENCES templates.document_layout(pk_document_data_id) ON DELETE SET NULL
+);
+
+CREATE INDEX idx_mapping_tmpl_id ON templates.template_fields_mapping(fk_template_id);
+CREATE INDEX idx_mapping_field_id ON templates.template_fields_mapping(fk_template_field_id);
+
+-- 6. template_recognition_history table
+CREATE TABLE IF NOT EXISTS templates.template_recognition_history (
+    pk_history_id BIGSERIAL PRIMARY KEY,
+    fk_template_id BIGINT NOT NULL,
+    fk_document_id BIGINT NOT NULL,
+    recognition_score NUMERIC,
+    matched_flag BOOLEAN,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    
+    CONSTRAINT fk_trh_template FOREIGN KEY (fk_template_id) REFERENCES templates.templates(pk_template_id) ON DELETE CASCADE,
+    CONSTRAINT fk_trh_document FOREIGN KEY (fk_document_id) REFERENCES templates.documents(pk_document_id) ON DELETE CASCADE
+);
+
+CREATE INDEX idx_recognition_history_doc ON templates.template_recognition_history(fk_document_id);

check_matches.py

@@ -0,0 +1,16 @@
+import sys
+import os
+sys.path.append(os.path.join(os.getcwd(), 'docengine'))
+
+from app.core.database import SessionLocal
+from app.models.document import TemplateMatch
+from app.models.template import DocumentFormat
+
+db = SessionLocal()
+matches = db.query(TemplateMatch).order_by(TemplateMatch.created_at.desc()).limit(10).all()
+print(f"Found {len(matches)} matches.")
+for m in matches:
+    fmt = db.query(DocumentFormat).filter(DocumentFormat.id == m.format_id).first()
+    fmt_name = fmt.name if fmt else 'Unknown'
+    print(f"Match: doc_id={m.document_id}, format_id={m.format_id}, name={fmt_name}, score={m.confidence_score}")
+    print(f"Details: {m.match_details}")

debug_match.py

@@ -0,0 +1,26 @@
+import sys
+import os
+sys.path.append(os.path.join(os.getcwd(), 'docengine'))
+
+from app.core.database import SessionLocal
+from app.models.document import Document
+from app.services.matching_service import MatchingService
+
+db = SessionLocal()
+doc = db.query(Document).order_by(Document.created_at.desc()).first()
+if not doc:
+    print("No documents found.")
+    sys.exit(0)
+
+print(f"Latest document: {doc.id} (status: {doc.status})")
+
+svc = MatchingService(db)
+try:
+    # Match with min_confidence=0.0 so it returns EVERYTHING
+    matches = svc.match_document(doc.id, min_confidence=0.0)
+    print(f"Returned {len(matches)} matches.")
+    for m in matches:
+        print(f"Match: format_id={m.format_id}, score={m.confidence_score}")
+        print(f"Details: {m.match_details}")
+except Exception as e:
+    print(f"Error matching: {e}")

docengine/.env.example

@@ -10,7 +10,7 @@ APP_WORKERS=4
 # Database
 DB_HOST=localhost
 DB_PORT=5432
-DB_NAME=document_engine
+DB_NAME=ocr
 DB_USER=postgres
 DB_PASSWORD=changeme
 DB_SCHEMA=admin
@@ -48,7 +48,7 @@ LOG_LEVEL=INFO
 LOG_FORMAT=json
 
 # CORS
-CORS_ORIGINS=["http://localhost:3000","http://localhost:8080"]
+CORS_ORIGINS=["http://localhost:3000","http://localhost:8080","http://localhost:4200"]
 CORS_ALLOW_CREDENTIALS=true
 
 # Rate Limiting

docengine/.gitignore

@@ -58,7 +58,7 @@ ENV/
 *~
 .DS_Store
 Thumbs.db
-storage/
+/storage/
 *.pid
 celerybeat-schedule
 celerybeat.pid

docengine/README.md

@@ -13,7 +13,7 @@ A production-ready system for scanning documents, detecting layouts, extracting
         ▼                      ▼
 ┌───────────────────────────────────────┐
 │       PostgreSQL (Schema: admin)       │
-│       192.168.0.111:7925              │
+│       192.168.0.111:5432               │
 └───────────────────────────────────────┘
 ```
 
@@ -92,7 +92,7 @@ docengine/
 ### Prerequisites
 
 - Python 3.12+
-- PostgreSQL 16 (running at `192.168.0.111:7925`)
+- PostgreSQL 16 (running at `192.168.0.111:5432`)
 - Redis (for Celery)
 - `poppler-utils` and `ghostscript` (for pdf2image/camelot)
 
@@ -116,8 +116,8 @@ mkdir -p storage/{documents,templates,images,temp,rendered}
 alembic upgrade head
 
 # (Optional) Seed default data
-psql -h 192.168.0.111 -p 7925 -U postgres -d document_engine -f sql/003_seed_data.sql
-psql -h 192.168.0.111 -p 7925 -U postgres -d document_engine -f sql/004_indexes.sql
+psql -h 192.168.0.111 -p 5432 -U postgres -d ocr -f sql/003_seed_data.sql
+psql -h 192.168.0.111 -p 5432 -U postgres -d ocr -f sql/004_indexes.sql
 
 # Start the application
 python -m app.main
@@ -142,7 +142,7 @@ docker compose up --build -d
 docker compose exec app alembic upgrade head
 
 # Seed data
-docker compose exec app bash -c "psql -h db -U postgres -d document_engine -f sql/003_seed_data.sql"
+docker compose exec app bash -c "psql -h db -U postgres -d ocr -f sql/003_seed_data.sql"
 ```
 
 ---
@@ -403,7 +403,7 @@ When a document is uploaded, the following Celery task pipeline executes asynchr
 
 ## Database
 
-**Connection**: `postgresql://postgres:***@192.168.0.111:7925/document_engine`
+**Connection**: `postgresql://postgres:***@192.168.0.111:5432/ocr`
 **Schema**: `admin`
 
 ### Migrations
@@ -474,11 +474,11 @@ All configuration is via environment variables (`.env` file). Key settings:
 |------------------------------------|------------------------|---------------------------------|
 | `APP_PORT`                         | `7989`                 | Application port                |
 | `DB_HOST`                          | `192.168.0.111`        | PostgreSQL host                 |
-| `DB_PORT`                          | `7925`                 | PostgreSQL port                 |
-| `DB_NAME`                          | `document_engine`      | Database name                   |
+| `DB_PORT`                          | `5432`                 | PostgreSQL port                 |
+| `DB_NAME`                          | `ocr`                  | Database name                   |
 | `DB_SCHEMA`                        | `admin`                | PostgreSQL schema               |
-| `REDIS_HOST`                       | `localhost`            | Redis host                      |
-| `CELERY_BROKER_URL`                | `redis://localhost:6379/0` | Celery broker                |
+| `REDIS_HOST`                       | `192.168.0.111`        | Redis host                      |
+| `CELERY_BROKER_URL`                | `redis://:***@192.168.0.111:7901/0` | Celery broker         |
 | `JWT_SECRET_KEY`                   | *(see .env)*           | JWT signing key                 |
 | `JWT_ACCESS_TOKEN_EXPIRE_MINUTES`  | `30`                   | Access token TTL                |
 | `STORAGE_LOCAL_PATH`               | `./storage`            | Local file storage path         |

docengine/alembic.ini

@@ -2,7 +2,7 @@
 script_location = alembic
 prepend_sys_path = .
 version_path_separator = os
-sqlalchemy.url = postgresql+psycopg2://postgres:M%%40tr%%21x%%23149%%40dm%%21N@192.168.0.111:7925/document_engine
+sqlalchemy.url = postgresql+psycopg2://postgres:M%%40triXPostgr3s%%406202@192.168.0.111:5432/ocr
 
 [post_write_hooks]
 

docengine/alembic/env.py

@@ -17,7 +17,7 @@ if config.config_file_name is not None:
 target_metadata = Base.metadata
 
 # Override the database URL from settings
-config.set_main_option("sqlalchemy.url", settings.database_url)
+config.set_main_option("sqlalchemy.url", settings.database_url.replace('%', '%%'))
 
 
 def run_migrations_offline() -> None:

docengine/app/api/v1/templates.py

@@ -10,7 +10,13 @@ from app.core.database import get_db
 from app.core.dependencies import CurrentUser
 from app.core.logging_config import get_logger
 from app.repositories.document_repository import DocumentRepository, TemplateMatchRepository
-from app.repositories.template_repository import TemplateRepository
+from app.repositories.template_repository import (
+    TemplateRepository, 
+    DocumentRegionRepository, 
+    DocumentCellRepository,
+    TableFormatRepository,
+    TableColumnRepository
+)
 from app.schemas.common import PaginatedResponse, SuccessResponse
 from app.schemas.document import TemplateMatchRequest, TemplateMatchResponse
 from app.schemas.template import (
@@ -18,6 +24,8 @@ from app.schemas.template import (
     TemplateRenderRequest,
     TemplateRenderResponse,
     TemplateResponse,
+    TemplateCreateRequest,
+    TemplateMappingSaveRequest,
 )
 
 logger = get_logger(__name__)
@@ -25,6 +33,198 @@ logger = get_logger(__name__)
 router = APIRouter(prefix="/templates", tags=["Templates"])
 
 
+@router.post(
+    "",
+    response_model=dict,
+    summary="Create Template",
+    description="Create a new template.",
+)
+def create_template(
+    payload: TemplateCreateRequest,
+    current_user: CurrentUser,
+    db: Session = Depends(get_db),
+) -> dict:
+    """Create a template."""
+    template_repo = TemplateRepository(db)
+    
+    template = template_repo.create_template(
+        name=payload.template_name,
+        page_width=1000.0,
+        page_height=1000.0,
+        source_document_id=uuid.UUID(payload.source_document_id) if payload.source_document_id else None
+    )
+    cell_repo = DocumentCellRepository(db)
+    saved_fields = []
+    
+    for index, field in enumerate(payload.fields):
+        cell = cell_repo.create_cell(
+            format_id=template.id,
+            page_number=1,
+            x=0.0,
+            y=0.0,
+            width=0.0,
+            height=0.0,
+            data_type=field.field_type,
+            field_name=field.field_label,
+            sequence=field.display_order or index,
+            is_dynamic=True
+        )
+        saved_fields.append({
+            "field_label": cell.field_name,
+            "field_type": cell.data_type
+        })
+        
+    db.commit()
+
+    return {
+        "pk_template_id": str(template.id),
+        "template_name": template.name,
+        "fields": saved_fields
+    }
+
+
+@router.put(
+    "/{template_id}",
+    response_model=dict,
+    summary="Update Template",
+    description="Update an existing template name and its fields.",
+)
+def update_template(
+    template_id: uuid.UUID,
+    payload: TemplateCreateRequest,
+    current_user: CurrentUser,
+    db: Session = Depends(get_db),
+) -> dict:
+    """Update a template."""
+    template_repo = TemplateRepository(db)
+    template = template_repo.get_by_id(template_id)
+    if not template:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=f"Template '{template_id}' not found",
+        )
+
+    if template.name != payload.template_name:
+        template.name = payload.template_name
+
+    from app.models.template import DocumentCell
+    db.query(DocumentCell).filter(DocumentCell.format_id == template_id).delete()
+    
+    saved_fields = []
+    cell_repo = DocumentCellRepository(db)
+    for index, field in enumerate(payload.fields):
+        cell = cell_repo.create_cell(
+            format_id=template.id,
+            page_number=1,
+            row_no=0,
+            column_no=0,
+            field_name=field.field_label,
+            data_type=field.field_type,
+            x=0.0,
+            y=0.0,
+            width=0.0,
+            height=0.0,
+            is_dynamic=True
+        )
+        saved_fields.append({
+            "field_label": cell.field_name,
+            "field_type": cell.data_type
+        })
+        
+    db.commit()
+
+    return {
+        "pk_template_id": str(template.id),
+        "template_name": template.name,
+        "fields": saved_fields
+    }
+
+
+@router.post(
+    "/{template_id}/mappings/save",
+    response_model=SuccessResponse,
+    summary="Save Template Mappings",
+    description="Save the field mappings for a template.",
+)
+def save_mappings(
+    template_id: uuid.UUID,
+    payload: list[TemplateMappingSaveRequest],
+    current_user: CurrentUser,
+    db: Session = Depends(get_db),
+) -> SuccessResponse:
+    """Save template mappings."""
+    template_repo = TemplateRepository(db)
+    template = template_repo.get_by_id(template_id)
+    if not template:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=f"Template '{template_id}' not found",
+        )
+
+    region_repo = DocumentRegionRepository(db)
+    cell_repo = DocumentCellRepository(db)
+    table_repo = TableFormatRepository(db)
+    table_col_repo = TableColumnRepository(db)
+    
+    # Delete existing field mappings and table formats for this template
+    from app.models.template import DocumentRegion, TableFormat
+    db.query(DocumentRegion).filter(
+        DocumentRegion.format_id == template_id, 
+        DocumentRegion.region_type == "field_mapping"
+    ).delete()
+    db.query(TableFormat).filter(TableFormat.format_id == template_id).delete()
+    db.flush()
+
+    cells = cell_repo.get_template_cells(template_id)
+    cell_map = {c.field_name: c for c in cells}
+    table_format = None
+    
+    # Save each mapped node
+    for mapping in payload:
+        cell = cell_map.get(mapping.field_name)
+        is_table_column = cell and cell.data_type == 'TABLE_COLUMN'
+        
+        for node_idx, node in enumerate(mapping.mapped_nodes):
+            if is_table_column:
+                if not table_format:
+                    table_format = table_repo.create_table_format(
+                        format_id=template_id,
+                        page_number=node.page_no or 1,
+                        x=0.0, y=0.0, width=1000.0, height=1000.0,
+                        rows=1, columns=10
+                    )
+                table_col_repo.create_column(
+                    table_format_id=table_format.id,
+                    column_index=node_idx,
+                    width=node.width,
+                    header_text=mapping.field_name,
+                    data_type="text"
+                )
+
+            region_repo.create_region(
+                format_id=template_id,
+                page_number=node.page_no or 1,
+                region_type="field_mapping",
+                x=node.x_coordinate,
+                y=node.y_coordinate,
+                width=node.width,
+                height=node.height,
+                content={
+                    "field_name": mapping.field_name,
+                    "text_value": node.text_value
+                }
+            )
+            
+    db.commit()
+    
+    # Generate fingerprint now that mappings are populated
+    from app.services.fingerprint_service import FingerprintService
+    FingerprintService(db).generate_fingerprint(template)
+    db.commit()
+    
+    return SuccessResponse(message="Mappings saved successfully")
+
+
 @router.get(
     "",
     response_model=PaginatedResponse[TemplateListResponse],
@@ -32,9 +232,9 @@ router = APIRouter(prefix="/templates", tags=["Templates"])
     description="List all active templates with pagination.",
 )
 def list_templates(
+    current_user: CurrentUser,
     page: int = Query(default=1, ge=1),
     page_size: int = Query(default=20, ge=1, le=100),
-    current_user: CurrentUser = None,
     db: Session = Depends(get_db),
 ) -> PaginatedResponse[TemplateListResponse]:
     """List all active templates."""
@@ -61,7 +261,7 @@ def list_templates(
 )
 def get_template(
     template_id: uuid.UUID,
-    current_user: CurrentUser = None,
+    current_user: CurrentUser,
     db: Session = Depends(get_db),
 ) -> TemplateResponse:
     """Get a template by ID."""
@@ -83,7 +283,7 @@ def get_template(
 )
 def delete_template(
     template_id: uuid.UUID,
-    current_user: CurrentUser = None,
+    current_user: CurrentUser,
     db: Session = Depends(get_db),
 ) -> SuccessResponse:
     """Soft-delete a template."""
@@ -109,7 +309,7 @@ def delete_template(
 )
 def match_template(
     payload: TemplateMatchRequest,
-    current_user: CurrentUser = None,
+    current_user: CurrentUser,
     db: Session = Depends(get_db),
 ) -> list[TemplateMatchResponse]:
     """Match a document against existing templates."""
@@ -162,7 +362,7 @@ def match_template(
 )
 def render_template(
     payload: TemplateRenderRequest,
-    current_user: CurrentUser = None,
+    current_user: CurrentUser,
     db: Session = Depends(get_db),
 ) -> TemplateRenderResponse:
     """Render a template to PDF."""
@@ -199,8 +399,8 @@ def render_template(
 )
 def download_rendered_pdf(
     template_id: uuid.UUID,
+    current_user: CurrentUser,
     filename: str = Query(..., description="Filename of the rendered PDF"),
-    current_user: CurrentUser = None,
     db: Session = Depends(get_db),
 ) -> FileResponse:
     """Download a rendered PDF."""

docengine/app/core/aes.py

@@ -0,0 +1,38 @@
+import base64
+from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
+
+def decrypt(base64_input: str, secret: bytes) -> str | None:
+    try:
+        combined = base64.b64decode(base64_input)
+        
+        # IV length is 12 bytes in the Java implementation
+        iv_length = 12
+        if len(combined) <= iv_length + 16:
+            return None
+            
+        iv = combined[:iv_length]
+        
+        # Java AES/GCM appends a 16-byte authentication tag at the end of cipherBytes
+        # cryptography library expects it to be passed into the modes.GCM(iv, tag)
+        cipher_bytes_with_tag = combined[iv_length:]
+        actual_ciphertext = cipher_bytes_with_tag[:-16]
+        tag = cipher_bytes_with_tag[-16:]
+        
+        cipher = Cipher(algorithms.AES(secret), modes.GCM(iv, tag))
+        decryptor = cipher.decryptor()
+        
+        plain_bytes = decryptor.update(actual_ciphertext) + decryptor.finalize()
+        return plain_bytes.decode('utf-8')
+    except Exception:
+        return None
+
+def get_string_value(encrypted_id: str, secret: str, secret_key_internal: str) -> str | None:
+    if not secret or not secret_key_internal:
+        return None
+    try:
+        # Replicate Java's logic: (s + secretKeyInternal).substring(0, Math.min(..., 16))
+        combined_str = secret + secret_key_internal
+        combined_secret = combined_str[:16].encode('utf-8')
+        return decrypt(encrypted_id, combined_secret)
+    except Exception:
+        return None

docengine/app/core/config.py

@@ -28,30 +28,32 @@ class Settings(BaseSettings):
 
     # Database
     db_host: str = "192.168.0.111"
-    db_port: int = 7925
-    db_name: str = "document_engine"
+    db_port: int = 5432
+    db_name: str = "ocr"
     db_user: str = "postgres"
-    db_password: str = "M@tr!x#149@dm!N"
+    db_password: str = "M@triXPostgr3s@6202"
     db_schema: str = "admin"
     db_pool_size: int = 20
     db_max_overflow: int = 10
     db_echo: bool = False
 
     # Redis
-    redis_host: str = "localhost"
-    redis_port: int = 6379
+    redis_host: str = "192.168.0.111"
+    redis_port: int = 7901
     redis_db: int = 0
-    redis_password: str = ""
+    redis_password: str = "M@triXR3d1s@6202"
 
     # Celery
-    celery_broker_url: str = "redis://localhost:6379/0"
-    celery_result_backend: str = "redis://localhost:6379/1"
+    celery_broker_url: str = "redis://:M@triXR3d1s@6202@192.168.0.111:7901/0"
+    celery_result_backend: str = "redis://:M@triXR3d1s@6202@192.168.0.111:7901/1"
 
     # JWT
     jwt_secret_key: str = "a7f3c9e1d4b8f2a6c0e5d7b3a9f1c4e8d2b6a0f5c3e7d1b9a4f8c2e6d0b5a3"
     jwt_algorithm: str = "HS256"
     jwt_access_token_expire_minutes: int = 30
     jwt_refresh_token_expire_days: int = 7
+    session_encryption_secret: str = ""
+    session_encryption_secret_internal: str = ""
 
     # Storage
     storage_provider: str = "local"
@@ -67,7 +69,7 @@ class Settings(BaseSettings):
     log_format: str = "json"
 
     # CORS
-    cors_origins: list[str] = ["http://localhost:3000", "http://localhost:8080"]
+    cors_origins: list[str] = ["http://localhost:3000", "http://localhost:8080", "http://localhost:4200"]
     cors_allow_credentials: bool = True
 
     # Rate Limiting

docengine/app/core/dependencies.py

@@ -11,17 +11,63 @@ from app.core.security import InvalidTokenError, decode_token
 from app.models.user import User
 from app.repositories.user_repository import UserRepository
 
-security_scheme = HTTPBearer(auto_error=True)
+import uuid
+from app.core.config import settings
+
+security_scheme = HTTPBearer(auto_error=False)
 
 
 def get_current_user(
-    credentials: Annotated[HTTPAuthorizationCredentials, Depends(security_scheme)],
+    credentials: Annotated[HTTPAuthorizationCredentials | None, Depends(security_scheme)],
     db: Annotated[Session, Depends(get_db)],
 ) -> User:
     """Extract and validate the current user from the JWT token."""
+    if credentials is None:
+        if settings.app_env == "development":
+            # Auto-login as default dev admin user if no token provided in dev
+            user_repo = UserRepository(db)
+            user = db.query(User).first()
+            if user:
+                return user
+            dev_user = User(
+                id=uuid.uuid4(),
+                username="dev_admin",
+                email="admin@docengine.local",
+                hashed_password="mock_password",
+                is_active=True,
+                is_superuser=True,
+            )
+            db.add(dev_user)
+            db.commit()
+            db.refresh(dev_user)
+            return dev_user
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Not authenticated",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
+
     try:
         payload = decode_token(credentials.credentials)
     except InvalidTokenError:
+        if settings.app_env == "development":
+            # Fallback to dev admin user on token decode failure in dev
+            user_repo = UserRepository(db)
+            user = db.query(User).first()
+            if user:
+                return user
+            dev_user = User(
+                id=uuid.uuid4(),
+                username="dev_admin",
+                email="admin@docengine.local",
+                hashed_password="mock_password",
+                is_active=True,
+                is_superuser=True,
+            )
+            db.add(dev_user)
+            db.commit()
+            db.refresh(dev_user)
+            return dev_user
         raise HTTPException(
             status_code=status.HTTP_401_UNAUTHORIZED,
             detail="Invalid or expired token",

docengine/app/core/security.py

@@ -8,6 +8,7 @@ from jose import JWTError, jwt
 from passlib.context import CryptContext
 
 from app.core.config import settings
+from app.core.aes import get_string_value
 
 pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
 
@@ -44,8 +45,14 @@ def create_refresh_token(data: dict[str, Any], expires_delta: timedelta | None =
 
 def decode_token(token: str) -> dict[str, Any]:
     """Decode and validate a JWT token."""
+    decrypted_token = get_string_value(
+        token, 
+        settings.session_encryption_secret, 
+        settings.session_encryption_secret_internal
+    )
+    final_token = decrypted_token if decrypted_token else token
     try:
-        payload = jwt.decode(token, settings.jwt_secret_key, algorithms=[settings.jwt_algorithm])
+        payload = jwt.decode(final_token, settings.jwt_secret_key, algorithms=[settings.jwt_algorithm])
         return payload
     except JWTError as e:
         raise InvalidTokenError(str(e)) from e

docengine/app/events/handlers.py

@@ -8,7 +8,7 @@ logger = get_logger(__name__)
 def on_startup() -> None:
     """Application startup event handler."""
     setup_logging()
-    logger.info("application_starting", event="startup")
+    logger.info("application_starting", phase="startup")
 
     # Ensure storage directories exist
     from app.storage.provider import get_storage_provider
@@ -25,15 +25,15 @@ def on_startup() -> None:
     else:
         logger.error("database_connection_failed")
 
-    logger.info("application_started", event="startup_complete")
+    logger.info("application_started", phase="startup_complete")
 
 
 def on_shutdown() -> None:
     """Application shutdown event handler."""
-    logger.info("application_shutting_down", event="shutdown")
+    logger.info("application_shutting_down", phase="shutdown")
 
     # Cleanup resources
     from app.core.database import engine
     engine.dispose()
 
-    logger.info("application_stopped", event="shutdown_complete")
+    logger.info("application_stopped", phase="shutdown_complete")

docengine/app/main.py

@@ -37,9 +37,9 @@ app = FastAPI(
 )
 
 # Setup middleware (order matters: last added = first executed)
-setup_cors(app)
 app.add_middleware(AuditMiddleware)
 app.add_middleware(RateLimitMiddleware)
+setup_cors(app)
 
 # Setup Prometheus metrics
 setup_metrics(app)

docengine/app/middleware/cors.py

@@ -13,13 +13,7 @@ def setup_cors(app: FastAPI) -> None:
         allow_origins=settings.cors_origins,
         allow_credentials=settings.cors_allow_credentials,
         allow_methods=["GET", "POST", "PUT", "PATCH", "DELETE", "OPTIONS"],
-        allow_headers=[
-            "Authorization",
-            "Content-Type",
-            "Accept",
-            "X-Request-ID",
-            "X-Requested-With",
-        ],
+        allow_headers=["*"],
         expose_headers=[
             "X-Request-ID",
             "X-Process-Time",

docengine/app/models/user.py

@@ -3,7 +3,7 @@ from __future__ import annotations
 import uuid
 from datetime import datetime
 
-from sqlalchemy import Boolean, DateTime, ForeignKey, String, Table, Text, func
+from sqlalchemy import Boolean, Column, DateTime, ForeignKey, String, Table, Text, func
 from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy.orm import Mapped, mapped_column, relationship
 
@@ -13,8 +13,8 @@ from app.models.base import TimestampMixin, UUIDPrimaryKeyMixin
 user_roles_table = Table(
     "user_roles",
     Base.metadata,
-    mapped_column("user_id", UUID(as_uuid=True), ForeignKey("users.id", ondelete="CASCADE"), primary_key=True),
-    mapped_column("role_id", UUID(as_uuid=True), ForeignKey("roles.id", ondelete="CASCADE"), primary_key=True),
+    Column("user_id", UUID(as_uuid=True), ForeignKey("users.id", ondelete="CASCADE"), primary_key=True),
+    Column("role_id", UUID(as_uuid=True), ForeignKey("roles.id", ondelete="CASCADE"), primary_key=True),
 )
 
 

docengine/app/repositories/template_repository.py

@@ -70,6 +70,7 @@ class TemplateRepository(BaseRepository[DocumentFormat]):
         fingerprint: dict | None = None,
         source_document_id: uuid.UUID | None = None,
         created_by: uuid.UUID | None = None,
+        is_active: bool = True,
     ) -> DocumentFormat:
         """Create a new template."""
         template = DocumentFormat(
@@ -85,6 +86,7 @@ class TemplateRepository(BaseRepository[DocumentFormat]):
             fingerprint=fingerprint,
             source_document_id=source_document_id,
             created_by=created_by,
+            is_active=is_active,
         )
         return self.create(template)
 

docengine/app/schemas/template.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 import uuid
 from datetime import datetime
-from typing import Any
+from typing import Any, List, Optional, Union
 
 from pydantic import Field
 
@@ -248,3 +248,30 @@ class TemplateRenderResponse(BaseSchema):
     file_size: int
     page_count: int
     rendered_at: datetime
+
+
+class TemplateFieldCreate(BaseSchema):
+    field_label: str
+    field_type: str = "text"
+    display_order: int = 0
+    required_flag: bool = False
+
+class TemplateCreateRequest(BaseSchema):
+    template_name: str
+    source_document_id: Optional[str] = None
+    fields: List[TemplateFieldCreate] = Field(default_factory=list)
+
+class MappingNodeRequest(BaseSchema):
+    pk_document_data_id: Union[int, str, None] = None
+    x_coordinate: float
+    y_coordinate: float
+    width: float
+    height: float
+    text_value: Optional[str] = None
+    page_width: Optional[float] = None
+    page_height: Optional[float] = None
+    page_no: Optional[int] = None
+
+class TemplateMappingSaveRequest(BaseSchema):
+    field_name: str
+    mapped_nodes: List[MappingNodeRequest] = Field(default_factory=list)

docengine/app/services/document_service.py

@@ -54,13 +54,11 @@ class DocumentProcessingService:
 
             # Step 2: Analyze layout
             layout_results = self.layout_service.analyze_document_layout(document)
-            document.document_metadata = document.document_metadata or {}
-            document.document_metadata["layout"] = layout_results
+            metadata = document.document_metadata or {}
+            metadata["layout"] = layout_results
+            document.document_metadata = metadata
 
-            # Step 3: Generate template
-            template = self.template_service.generate_template(document)
-
-            # Step 4: Update document status
+            # Step 3: Update document status
             self.doc_repo.update_status(document_id, "completed")
             self.db.commit()
 
@@ -68,7 +66,6 @@ class DocumentProcessingService:
                 "processing_completed",
                 document_id=str(document_id),
                 pages=document.page_count,
-                template_id=str(template.id),
             )
 
             return document

docengine/app/services/fingerprint_service.py

@@ -145,6 +145,11 @@ class FingerprintService:
         if not template.table_formats:
             return None
 
+        # Filter out dummy tables created by manual mappings (width=1000, height=1000)
+        valid_tables = [tf for tf in template.table_formats if tf.width != 1000.0 and tf.height != 1000.0]
+        if not valid_tables:
+            return None
+
         return {
             "items": [
                 {
@@ -156,15 +161,36 @@ class FingerprintService:
                     "rows": tf.rows,
                     "columns": tf.columns,
                 }
-                for tf in template.table_formats
+                for tf in valid_tables
             ]
         }
 
     def _extract_cell_coordinates(self, template: DocumentFormat) -> dict[str, Any] | None:
         """Extract cell coordinates from template."""
+        # For manually mapped templates, prefer the actual mapped regions
+        field_regions = [r for r in template.regions if r.region_type == "field_mapping"]
+        if field_regions:
+            return {
+                "items": [
+                    {
+                        "page": r.page_number,
+                        "x": r.x,
+                        "y": r.y,
+                        "width": r.width,
+                        "height": r.height,
+                    }
+                    for r in field_regions
+                ]
+            }
+
+        # Otherwise fallback to template cells, but skip if they are all 0,0 (unmapped placeholders)
         if not template.cells:
             return None
             
+        has_real_coords = any(c.width > 0 or c.height > 0 for c in template.cells)
+        if not has_real_coords:
+            return None
+
         return {
             "items": [
                 {
@@ -187,7 +213,7 @@ class FingerprintService:
         serialized = json.dumps(normalized, sort_keys=True, default=str)
         return hashlib.sha256(serialized.encode()).hexdigest()
 
-    def _normalize_coordinates(self, data: dict[str, Any]) -> dict[str, Any]:
+    def _normalize_coordinates(self, data: Any) -> Any:
         """Normalize coordinates by rounding to reduce sensitivity to small variations."""
         if isinstance(data, dict):
             return {k: self._normalize_coordinates(v) for k, v in data.items()}
@@ -215,44 +241,49 @@ class FingerprintService:
         weights.append(3.0)
 
         # Logo coordinates similarity
-        logo_score = self._compare_coordinates(
-            fingerprint1.logo_coordinates,
-            fingerprint2_data.get("logo_coordinates"),
-        )
-        scores.append(logo_score)
-        weights.append(2.0)
+        if fingerprint1.logo_coordinates and fingerprint1.logo_coordinates.get("items"):
+            logo_score = self._compare_coordinates(
+                fingerprint1.logo_coordinates,
+                fingerprint2_data.get("logo_coordinates"),
+            )
+            scores.append(logo_score)
+            weights.append(2.0)
 
         # Header coordinates similarity
-        header_score = self._compare_coordinates(
-            fingerprint1.header_coordinates,
-            fingerprint2_data.get("header_coordinates"),
-        )
-        scores.append(header_score)
-        weights.append(2.0)
+        if fingerprint1.header_coordinates and fingerprint1.header_coordinates.get("items"):
+            header_score = self._compare_coordinates(
+                fingerprint1.header_coordinates,
+                fingerprint2_data.get("header_coordinates"),
+            )
+            scores.append(header_score)
+            weights.append(2.0)
 
         # Footer coordinates similarity
-        footer_score = self._compare_coordinates(
-            fingerprint1.footer_coordinates,
-            fingerprint2_data.get("footer_coordinates"),
-        )
-        scores.append(footer_score)
-        weights.append(1.5)
+        if fingerprint1.footer_coordinates and fingerprint1.footer_coordinates.get("items"):
+            footer_score = self._compare_coordinates(
+                fingerprint1.footer_coordinates,
+                fingerprint2_data.get("footer_coordinates"),
+            )
+            scores.append(footer_score)
+            weights.append(1.5)
 
         # Table coordinates similarity
-        table_score = self._compare_coordinates(
-            fingerprint1.table_coordinates,
-            fingerprint2_data.get("table_coordinates"),
-        )
-        scores.append(table_score)
-        weights.append(2.5)
+        if fingerprint1.table_coordinates and fingerprint1.table_coordinates.get("items"):
+            table_score = self._compare_coordinates(
+                fingerprint1.table_coordinates,
+                fingerprint2_data.get("table_coordinates"),
+            )
+            scores.append(table_score)
+            weights.append(2.0)
 
         # Cell coordinates similarity
-        cell_score = self._compare_coordinates(
-            fingerprint1.cell_coordinates,
-            fingerprint2_data.get("cell_coordinates"),
-        )
-        scores.append(cell_score)
-        weights.append(1.5)
+        if fingerprint1.cell_coordinates and fingerprint1.cell_coordinates.get("items"):
+            cell_score = self._compare_coordinates(
+                fingerprint1.cell_coordinates,
+                fingerprint2_data.get("cell_coordinates"),
+            )
+            scores.append(cell_score)
+            weights.append(1.5)
 
         # Weighted average
         total_weight = sum(weights)

docengine/app/services/pdf_service.py

@@ -107,49 +107,94 @@ class NativePDFService:
 
     def _extract_text_blocks(self, doc_page: DocumentPage, page: fitz.Page) -> None:
         """Extract text blocks with positioning and font information."""
-        blocks = page.get_text("dict", flags=fitz.TEXT_PRESERVE_WHITESPACE)["blocks"]
+        blocks = page.get_text("rawdict")["blocks"]
         sequence = 0
+        chunks = []
 
         for block in blocks:
-            if block["type"] != 0:  # Skip non-text blocks
+            if block["type"] != 0:
                 continue
 
-            block_text_parts = []
-            font_info = {"family": None, "size": None, "color": None, "style": None}
+            current_chunk = None
+            space_count = 0
 
             for line in block.get("lines", []):
                 for span in line.get("spans", []):
-                    text = span.get("text", "").strip()
-                    if text:
-                        block_text_parts.append(text)
-                        # Capture font info from the first non-empty span
-                        if font_info["family"] is None:
-                            font_info["family"] = span.get("font", None)
-                            font_info["size"] = span.get("size", None)
-                            color_int = span.get("color", 0)
-                            font_info["color"] = f"#{color_int:06x}" if isinstance(color_int, int) else None
-                            flags = span.get("flags", 0)
-                            styles = []
-                            if flags & 1:
-                                styles.append("superscript")
-                            if flags & 2:
-                                styles.append("italic")
-                            if flags & 4:
-                                styles.append("serif")
-                            if flags & 8:
-                                styles.append("monospace")
-                            if flags & 16:
-                                styles.append("bold")
-                            font_info["style"] = ",".join(styles) if styles else "regular"
+                    font_size = span.get("size", 12.0)
                     
-            full_text = " ".join(block_text_parts)
-            if not full_text.strip():
-                continue
+                    # Ignore massive text (like diagonal watermarks)
+                    if font_size > 60:
+                        continue
+                        
+                    space_threshold = font_size * 1.5
+                    
+                    font_family = span.get("font", None)
+                    color_int = span.get("color", 0)
+                    font_color = f"#{color_int:06x}" if isinstance(color_int, int) else None
+                    
+                    flags = span.get("flags", 0)
+                    styles = []
+                    if flags & 1: styles.append("superscript")
+                    if flags & 2: styles.append("italic")
+                    if flags & 4: styles.append("serif")
+                    if flags & 8: styles.append("monospace")
+                    if flags & 16: styles.append("bold")
+                    font_style = ",".join(styles) if styles else "regular"
+                    
+                    font_info = {
+                        "family": font_family,
+                        "size": font_size,
+                        "color": font_color,
+                        "style": font_style
+                    }
+                    
+                    for char in span.get("chars", []):
+                        c = char["c"]
+                        bbox = char["bbox"]
+                        
+                        if c == ' ':
+                            space_count += 1
+                            if space_count >= 2:
+                                if current_chunk and current_chunk["text"].strip():
+                                    chunks.append(current_chunk)
+                                    current_chunk = None
+                            elif current_chunk:
+                                current_chunk["text"] += c
+                                current_chunk["bbox"][2] = max(current_chunk["bbox"][2], bbox[2])
+                                current_chunk["bbox"][3] = max(current_chunk["bbox"][3], bbox[3])
+                            continue
+                        else:
+                            space_count = 0
+                        
+                        if current_chunk is None:
+                            current_chunk = {"text": c, "bbox": list(bbox), "font_info": font_info}
+                            continue
+                        
+                        prev_x1 = current_chunk["bbox"][2]
+                        distance = bbox[0] - prev_x1
+                        
+                        if distance > space_threshold:
+                            if current_chunk["text"].strip():
+                                chunks.append(current_chunk)
+                            current_chunk = {"text": c, "bbox": list(bbox), "font_info": font_info}
+                        else:
+                            current_chunk["text"] += c
+                            current_chunk["bbox"][2] = max(current_chunk["bbox"][2], bbox[2])
+                            current_chunk["bbox"][3] = max(current_chunk["bbox"][3], bbox[3])
+                            current_chunk["bbox"][1] = min(current_chunk["bbox"][1], bbox[1])
+                            current_chunk["bbox"][0] = min(current_chunk["bbox"][0], bbox[0])
+
+                if current_chunk and current_chunk["text"].strip():
+                    chunks.append(current_chunk)
+                    current_chunk = None
+
+        for chunk in chunks:
+            bbox = chunk["bbox"]
+            font_info = chunk["font_info"]
             
-            bbox = block["bbox"]
             self.text_block_repo.create_text_block(
                 page_id=doc_page.id,
-                text=full_text,
+                text=chunk["text"].strip(),
                 x=bbox[0],
                 y=bbox[1],
                 width=bbox[2] - bbox[0],

docengine/app/services/template_service.py

@@ -80,6 +80,7 @@ class TemplateService:
             description=f"Auto-generated template from {document.original_filename}",
             source_document_id=document.id,
             created_by=user_id,
+            is_active=False,
         )
 
         # Process each page

docengine/app/storage/__init__.py

@@ -0,0 +1 @@
+# Storage module

docengine/app/storage/provider.py

@@ -0,0 +1,163 @@
+from __future__ import annotations
+
+import hashlib
+import os
+import shutil
+import uuid
+from abc import ABC, abstractmethod
+from pathlib import Path
+
+from app.core.config import settings
+from app.core.exceptions import StorageError
+from app.core.logging_config import get_logger
+
+logger = get_logger(__name__)
+
+
+class StorageProvider(ABC):
+    """Abstract base class for storage providers."""
+
+    @abstractmethod
+    def save_file(self, file_data: bytes, directory: str, filename: str | None = None) -> str:
+        """Save file data and return the storage path."""
+        ...
+
+    @abstractmethod
+    def read_file(self, storage_path: str) -> bytes:
+        """Read file data from storage."""
+        ...
+
+    @abstractmethod
+    def delete_file(self, storage_path: str) -> bool:
+        """Delete a file from storage. Returns True if successful."""
+        ...
+
+    @abstractmethod
+    def file_exists(self, storage_path: str) -> bool:
+        """Check if a file exists in storage."""
+        ...
+
+    @abstractmethod
+    def get_file_size(self, storage_path: str) -> int:
+        """Get the file size in bytes."""
+        ...
+
+    @abstractmethod
+    def get_absolute_path(self, storage_path: str) -> str:
+        """Get the absolute filesystem path for a storage path."""
+        ...
+
+    @staticmethod
+    def compute_checksum(data: bytes, algorithm: str = "sha256") -> str:
+        """Compute checksum of file data."""
+        hasher = hashlib.new(algorithm)
+        hasher.update(data)
+        return hasher.hexdigest()
+
+    @staticmethod
+    def generate_filename(original_filename: str) -> str:
+        """Generate a unique filename preserving the original extension."""
+        ext = Path(original_filename).suffix.lower()
+        return f"{uuid.uuid4().hex}{ext}"
+
+
+class LocalStorageProvider(StorageProvider):
+    """Local filesystem storage provider."""
+
+    def __init__(self, base_path: str | None = None) -> None:
+        self.base_path = Path(base_path or settings.storage_local_path).resolve()
+        self._ensure_directories()
+
+    def _ensure_directories(self) -> None:
+        """Create required storage directories."""
+        for subdir in ("documents", "templates", "images", "temp", "rendered"):
+            (self.base_path / subdir).mkdir(parents=True, exist_ok=True)
+
+    def _resolve_path(self, storage_path: str) -> Path:
+        """Resolve a storage path to an absolute path."""
+        resolved = (self.base_path / storage_path).resolve()
+        if not str(resolved).startswith(str(self.base_path)):
+            raise StorageError(f"Path traversal detected: {storage_path}")
+        return resolved
+
+    def save_file(self, file_data: bytes, directory: str, filename: str | None = None) -> str:
+        """Save file data to local storage."""
+        if filename is None:
+            filename = f"{uuid.uuid4().hex}.bin"
+
+        dir_path = self.base_path / directory
+        dir_path.mkdir(parents=True, exist_ok=True)
+
+        file_path = dir_path / filename
+        try:
+            file_path.write_bytes(file_data)
+            storage_path = str(file_path.relative_to(self.base_path))
+            logger.info("file_saved", storage_path=storage_path, size=len(file_data))
+            return storage_path
+        except OSError as e:
+            raise StorageError(f"Failed to save file: {e}") from e
+
+    def read_file(self, storage_path: str) -> bytes:
+        """Read file data from local storage."""
+        file_path = self._resolve_path(storage_path)
+        if not file_path.exists():
+            raise StorageError(f"File not found: {storage_path}")
+        try:
+            return file_path.read_bytes()
+        except OSError as e:
+            raise StorageError(f"Failed to read file: {e}") from e
+
+    def delete_file(self, storage_path: str) -> bool:
+        """Delete a file from local storage."""
+        file_path = self._resolve_path(storage_path)
+        if not file_path.exists():
+            return False
+        try:
+            file_path.unlink()
+            logger.info("file_deleted", storage_path=storage_path)
+            return True
+        except OSError as e:
+            logger.error("file_delete_failed", storage_path=storage_path, error=str(e))
+            raise StorageError(f"Failed to delete file: {e}") from e
+
+    def file_exists(self, storage_path: str) -> bool:
+        """Check if a file exists in local storage."""
+        file_path = self._resolve_path(storage_path)
+        return file_path.exists()
+
+    def get_file_size(self, storage_path: str) -> int:
+        """Get the file size in bytes."""
+        file_path = self._resolve_path(storage_path)
+        if not file_path.exists():
+            raise StorageError(f"File not found: {storage_path}")
+        return file_path.stat().st_size
+
+    def get_absolute_path(self, storage_path: str) -> str:
+        """Get the absolute filesystem path."""
+        return str(self._resolve_path(storage_path))
+
+    def save_temp_file(self, file_data: bytes, filename: str) -> str:
+        """Save a temporary file."""
+        return self.save_file(file_data, "temp", filename)
+
+    def cleanup_temp(self) -> int:
+        """Remove all files in the temp directory."""
+        temp_dir = self.base_path / "temp"
+        count = 0
+        if temp_dir.exists():
+            for item in temp_dir.iterdir():
+                if item.is_file():
+                    item.unlink()
+                    count += 1
+                elif item.is_dir():
+                    shutil.rmtree(item)
+                    count += 1
+        logger.info("temp_cleanup", files_removed=count)
+        return count
+
+
+def get_storage_provider() -> StorageProvider:
+    """Factory function to get the configured storage provider."""
+    if settings.storage_provider == "local":
+        return LocalStorageProvider()
+    raise StorageError(f"Unknown storage provider: {settings.storage_provider}")

docengine/app/utils/sanitizers.py

@@ -0,0 +1,62 @@
+import re
+from typing import Optional
+from datetime import datetime
+from dateutil import parser
+
+def sanitize_amount(text: str) -> Optional[float]:
+    """
+    Sanitizes a string representing an amount/number (e.g., "$1,234.56", "€ 50,000", "50 USD")
+    by removing currency symbols, commas, and other non-numeric characters (except for the decimal separator),
+    and casts it to a float.
+    
+    Args:
+        text (str): The raw extracted text from the document.
+        
+    Returns:
+        Optional[float]: The sanitized numeric value, or None if no number could be extracted.
+    """
+    if not text:
+        return None
+        
+    # Remove obvious alphabetic currency codes, spaces, and commas
+    # We keep digits, period, and minus sign
+    cleaned_text = re.sub(r'[^\d\.-]', '', text)
+    
+    if not cleaned_text:
+        return None
+        
+    try:
+        # Handle cases where multiple periods or dashes might exist incorrectly
+        # We just try to cast to float. If the OCR produced something like "1.23.45", this will fail.
+        # A more robust regex can handle exact capture if needed.
+        # But this basic cast covers 95% of standard sanitized strings.
+        return float(cleaned_text)
+    except ValueError:
+        return None
+
+def sanitize_date(text: str, field_type: str = 'DATE') -> Optional[str]:
+    """
+    Sanitizes a string representing a date or datetime and converts it to ISO 8601 format.
+    
+    Args:
+        text (str): The raw extracted text from the document.
+        field_type (str): 'DATE' or 'DATETIME'. Determines the output format.
+        
+    Returns:
+        Optional[str]: The sanitized date string in ISO format, or None if it could not be parsed.
+    """
+    if not text:
+        return None
+        
+    try:
+        # dateutil.parser is very robust at handling formats like "Dec 11, 2020", "11/12/2020", etc.
+        # fuzzy=True allows it to ignore extra words/characters around the date
+        parsed_date = parser.parse(text, fuzzy=True)
+        
+        if field_type == 'DATETIME':
+            return parsed_date.strftime('%Y-%m-%dT%H:%M:%S')
+        else:
+            return parsed_date.strftime('%Y-%m-%d')
+    except (ValueError, TypeError, OverflowError):
+        return None
+

docengine/app/workers/celery_app.py

@@ -25,6 +25,7 @@ celery_app.conf.update(
     task_reject_on_worker_lost=True,
     broker_connection_retry_on_startup=True,
     result_expires=86400,
+    task_default_queue="docengine_default",
     task_routes={
         "app.tasks.document_tasks.*": {"queue": "document_processing"},
     },
@@ -40,4 +41,9 @@ celery_app.conf.update(
     },
 )
 
-celery_app.autodiscover_tasks(["app.tasks"])
+celery_app.conf.update(
+    imports=[
+        "app.tasks.document_tasks",
+        "app.tasks.maintenance_tasks"
+    ]
+)

docengine/application.properties

@@ -2,7 +2,7 @@
 server.port=7989
 
 db.host=192.168.0.111
-db.port=7925
+db.port=5432
 db.user=postgres
-db.password=M@tr!x#149@dm!N
+db.password=M@triXPostgr3s@6202
 db.schema=admin

docengine/docker-compose.prod.yml

@@ -7,14 +7,14 @@ services:
     environment:
       POSTGRES_USER: postgres
       POSTGRES_PASSWORD: "${DB_PASSWORD}"
-      POSTGRES_DB: document_engine
+      POSTGRES_DB: ocr
     ports:
-      - "7925:5432"
+      - "5432:5432"
     volumes:
       - docengine_pgdata_prod:/var/lib/postgresql/data
       - ./sql/001_create_schema.sql:/docker-entrypoint-initdb.d/001_create_schema.sql
     healthcheck:
-      test: ["CMD-SHELL", "pg_isready -U postgres -d document_engine"]
+      test: ["CMD-SHELL", "pg_isready -U postgres -d ocr"]
       interval: 10s
       timeout: 5s
       retries: 5

docengine/docker-compose.yml

@@ -6,15 +6,15 @@ services:
     container_name: docengine_db
     environment:
       POSTGRES_USER: postgres
-      POSTGRES_PASSWORD: "M@tr!x#149@dm!N"
-      POSTGRES_DB: document_engine
+      POSTGRES_PASSWORD: "M@triXPostgr3s@6202"
+      POSTGRES_DB: ocr
     ports:
-      - "7925:5432"
+      - "5432:5432"
     volumes:
       - docengine_pgdata:/var/lib/postgresql/data
       - ./sql/001_create_schema.sql:/docker-entrypoint-initdb.d/001_create_schema.sql
     healthcheck:
-      test: ["CMD-SHELL", "pg_isready -U postgres -d document_engine"]
+      test: ["CMD-SHELL", "pg_isready -U postgres -d ocr"]
       interval: 10s
       timeout: 5s
       retries: 5

docengine/requirements.txt

@@ -21,7 +21,7 @@ bcrypt==4.2.1
 # Document Processing
 PyMuPDF==1.25.3
 paddleocr==2.9.1
-paddlepaddle==3.0.0b1
+paddlepaddle>=3.0.0
 layoutparser==0.3.4
 opencv-python-headless==4.10.0.84
 camelot-py[cv]==0.11.0

docengine/sql/001_create_schema.sql

@@ -2,7 +2,7 @@
 CREATE SCHEMA IF NOT EXISTS admin;
 
 -- Set the default search path
-ALTER DATABASE document_engine SET search_path TO admin, public;
+ALTER DATABASE ocr SET search_path TO admin, public;
 
 -- Grant privileges
 GRANT ALL ON SCHEMA admin TO postgres;

docengine/sql/002_create_tables.sql

@@ -1,6 +1,6 @@
 -- DocEngine: Complete table creation script
 -- Schema: admin
--- Database: document_engine
+-- Database: ocr
 
 SET search_path TO admin, public;
 

frontend/src/app/app.routes.ts

@@ -3,6 +3,7 @@ import { LoginComponent } from './login/login.component';
 import { DashboardComponent } from './pages/dashboard/dashboard.component';
 import { OcrComponent } from './ocr/ocr.component';
 import { MailboxComponent } from './mailbox/mailbox.component';
+import { TemplatesComponent } from './templates/templates.component';
 
 import { AuthorizeComponent } from './pages/session/auth/authorize.component';
 import { AuthorizeGuard } from './interceptors/authorize.guard';
@@ -23,7 +24,8 @@ export const routes: Routes = [
     children: [
       { path: 'profile', component: ProfileComponent },
       { path: 'mailbox', component: MailboxComponent },
-      { path: 'ocr', component: OcrComponent }
+      { path: 'ocr', component: OcrComponent },
+      { path: 'templates', component: TemplatesComponent }
     ]
   },
   { path: 'account',

frontend/src/app/services/template.service.ts

@@ -0,0 +1,103 @@
+import { Injectable } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
+import { Observable } from 'rxjs';
+import { map } from 'rxjs/operators';
+import { environment } from '../../environments/environment';
+
+export interface DocumentLayout {
+  pk_document_data_id: number;
+  fk_document_id: number;
+  page_no: number;
+  text_value: string;
+  block_type: string;
+  parent_block_id?: number;
+  x_coordinate: number;
+  y_coordinate: number;
+  width: number;
+  height: number;
+  confidence: number;
+  sequence_no: number;
+  page_width: number;
+  page_height: number;
+}
+
+export interface TemplateField {
+  pk_template_field_id?: number;
+  field_label: string;
+  field_type: string;
+  display_order: number;
+  required_flag: boolean;
+}
+
+export interface Template {
+  pk_template_id: number;
+  template_name: string;
+  fields: TemplateField[];
+}
+
+@Injectable({
+  providedIn: 'root'
+})
+export class TemplateService {
+  private apiUrl = environment.docEngineService;
+
+  constructor(private http: HttpClient) {}
+
+  uploadDocument(file: File): Observable<any> {
+    const formData = new FormData();
+    formData.append('file', file);
+    return this.http.post(`${this.apiUrl}/documents/upload`, formData);
+  }
+
+  getDocumentLayout(documentId: string): Observable<DocumentLayout[]> {
+    return this.http.get<any>(`${this.apiUrl}/documents/${documentId}`).pipe(
+      map(doc => {
+        const layouts: DocumentLayout[] = [];
+        if (doc.pages) {
+          doc.pages.forEach((page: any) => {
+            if (page.text_blocks) {
+              page.text_blocks.forEach((tb: any) => {
+                layouts.push({
+                  pk_document_data_id: tb.id,
+                  fk_document_id: doc.id,
+                  page_no: page.page_number,
+                  text_value: tb.text,
+                  block_type: tb.block_type,
+                  x_coordinate: tb.x,
+                  y_coordinate: tb.y,
+                  width: tb.width,
+                  height: tb.height,
+                  confidence: tb.confidence || 0,
+                  sequence_no: tb.sequence || 0,
+                  page_width: page.width || 1000,
+                  page_height: page.height || 1000
+                });
+              });
+            }
+          });
+        }
+        return layouts;
+      })
+    );
+  }
+
+  createTemplate(payload: any): Observable<any> {
+    return this.http.post<any>(`${this.apiUrl}/templates`, payload);
+  }
+
+  updateTemplate(templateId: string, payload: any): Observable<any> {
+    return this.http.put<any>(`${this.apiUrl}/templates/${templateId}`, payload);
+  }
+
+  saveMappings(templateId: string, mappings: any[]): Observable<any> {
+    return this.http.post(`${this.apiUrl}/templates/${templateId}/mappings/save`, mappings);
+  }
+  
+  getTemplate(templateId: string): Observable<any> {
+    return this.http.get(`${this.apiUrl}/templates/${templateId}`);
+  }
+
+  recognizeTemplate(documentId: string): Observable<any[]> {
+    return this.http.post<any[]>(`${this.apiUrl}/templates/match`, { document_id: documentId });
+  }
+}

frontend/src/app/templates/templates.component.html

@@ -0,0 +1,144 @@
+<p-toast></p-toast>
+<div class="template-mapping-container">
+  <p-splitter [panelSizes]="[50, 50]" [minSizes]="[30, 30]" styleClass="h-full w-full">
+    
+    <!-- LEFT PANEL: DOCUMENT PREVIEW -->
+    <ng-template pTemplate>
+      <div class="panel-container">
+        <div class="header-section">
+          <h2>Document Preview</h2>
+          <div class="upload-section">
+            <input type="file" #fileInput style="display: none" (change)="onFileUpload($event)" accept=".pdf,.png,.jpg,.jpeg,.tiff">
+            <p-button label="Upload Document" icon="pi pi-upload" (onClick)="fileInput.click()"></p-button>
+          </div>
+        </div>
+        
+        <div class="preview-area p-4" style="overflow-y: auto; position: relative;">
+          <div *ngIf="layoutNodes.length === 0 && !isScanning" class="empty-state">
+            <i class="pi pi-file text-4xl mb-3"></i>
+            <p>Upload a document to view its extracted layout structure.</p>
+          </div>
+
+          <!-- Scanning Overlay -->
+          <div *ngIf="isScanning" class="scanning-overlay">
+            <div class="scanner-container">
+              <i class="pi pi-file text-6xl text-gray-400 mb-4 scanner-doc"></i>
+              <div class="laser-beam"></div>
+              <div class="scanner-grid"></div>
+            </div>
+            <div class="scanning-text mt-4">
+              <i class="pi pi-spin pi-cog mr-2"></i>
+              <span class="font-semibold text-lg text-primary">Analyzing Document Layout...</span>
+            </div>
+            <p class="text-sm text-gray-500 mt-2">Extracting text, tables, and regions</p>
+          </div>
+
+          <div *ngFor="let page of pages; let i = index" class="document-page-container mb-5">
+            <div class="page-header text-sm font-semibold text-gray-500 mb-2">Page {{ page.page_number }}</div>
+            
+            <div class="document-canvas" 
+                 [id]="'document-layout-list-' + i"
+                 cdkDropList
+                 [cdkDropListData]="page.nodes"
+                 [cdkDropListConnectedTo]="getConnectedDropLists()"
+                 (cdkDropListDropped)="drop($event)"
+                 [style.aspect-ratio]="page.width + ' / ' + page.height">
+                 
+              <div *ngFor="let node of page.nodes; let j = index" 
+                   cdkDrag 
+                   [cdkDragData]="node"
+                   class="layout-node" 
+                   (mouseup)="onNodeMouseUp(node, $event)"
+                   [ngClass]="node.block_type.toLowerCase()"
+                   [style.left.%]="(node.x_coordinate / node.page_width) * 100"
+                   [style.top.%]="(node.y_coordinate / node.page_height) * 100"
+                   [style.width.%]="(node.width / node.page_width) * 100"
+                   [style.height.%]="(node.height / node.page_height) * 100">
+                <i class="pi pi-bars drag-handle" cdkDragHandle title="Drag Item"></i>
+                <i class="pi pi-times close-icon" (click)="removeNode(i, j, $event)" title="Delete Item"></i>
+                <div class="node-type" *ngIf="node.height > 20">{{ node.block_type }}</div>
+                <div class="node-text">{{ node.text_value }}</div>
+              </div>
+            </div>
+          </div>
+        </div>
+      </div>
+    </ng-template>
+
+    <!-- RIGHT PANEL: TEMPLATE MAPPING -->
+    <ng-template pTemplate>
+      <div class="panel-container">
+        <div class="header-section">
+          <div class="template-controls">
+            <span class="p-input-icon-left w-full">
+              <i class="pi pi-file"></i>
+              <input pInputText type="text" [(ngModel)]="templateName" placeholder="Template Name" class="w-full" style="padding-left: 2.5rem;" />
+            </span>
+            <div class="button-group mt-2 flex gap-2">
+              <p-button label="Add Field" icon="pi pi-plus" styleClass="p-button-outlined" (onClick)="showAddFieldDialog()"></p-button>
+            </div>
+          </div>
+        </div>
+
+        <div class="mapping-area">
+          <div *ngIf="templateFields.length === 0" class="empty-state">
+            <p>Add template fields to start mapping.</p>
+          </div>
+
+          <div class="field-list">
+            <div *ngFor="let field of templateFields" class="template-field-container">
+              <div class="field-header flex justify-content-between align-items-center">
+                <div>
+                  <strong>{{ field.field_label }}</strong> 
+                  <span class="badge ml-2">{{ field.field_type }}</span>
+                </div>
+                <p-button icon="pi pi-trash" styleClass="p-button-rounded p-button-danger p-button-text p-button-sm" (onClick)="removeField(field.pk_template_field_id)"></p-button>
+              </div>
+              
+              <div class="drop-zone"
+                   [id]="'field-' + field.pk_template_field_id"
+                   cdkDropList
+                   [cdkDropListData]="mappings[field.pk_template_field_id]"
+                   [cdkDropListConnectedTo]="getCanvasDropLists()"
+                   (cdkDropListDropped)="drop($event, field.pk_template_field_id)">
+                
+                <div class="placeholder" *ngIf="mappings[field.pk_template_field_id].length === 0">
+                  Drop value here...
+                </div>
+
+                <div *ngFor="let mappedNode of mappings[field.pk_template_field_id]; let k = index" cdkDrag [cdkDragData]="mappedNode" class="mapped-node">
+                  <i class="pi pi-arrow-left text-xs mr-2"></i> 
+                  <span class="flex-1 overflow-hidden white-space-nowrap text-overflow-ellipsis">{{ mappedNode.text_value }}</span>
+                  <i class="pi pi-times cursor-pointer text-red-500 hover:text-red-700 ml-2" (click)="removeFromField(field.pk_template_field_id!, k)" title="Remove"></i>
+                </div>
+              </div>
+            </div>
+          </div>
+        </div>
+
+        <div class="footer-section p-3 border-t">
+          <p-button label="Save Template & Mappings" icon="pi pi-save" styleClass="w-full p-button-success" (onClick)="saveTemplateAndMappings()" [disabled]="templateFields.length === 0"></p-button>
+        </div>
+      </div>
+    </ng-template>
+    
+  </p-splitter>
+</div>
+
+<!-- Add Field Dialog -->
+<p-dialog header="Add Template Field" [(visible)]="displayAddField" [modal]="true" [style]="{width: '400px'}">
+  <div class="flex flex-column gap-4 py-3">
+    <div class="field flex flex-column gap-2">
+      <label for="fieldLabel" class="font-semibold">Field Label</label>
+      <input id="fieldLabel" type="text" pInputText [(ngModel)]="newField.field_label" class="w-full" autofocus />
+    </div>
+    <div class="field flex flex-column gap-2">
+      <label for="fieldType" class="font-semibold">Field Type</label>
+      <p-dropdown id="fieldType" [options]="fieldTypes" [(ngModel)]="newField.field_type" [style]="{'width':'100%'}" appendTo="body"></p-dropdown>
+    </div>
+  </div>
+  <ng-template pTemplate="footer">
+    <p-button label="Cancel" icon="pi pi-times" (onClick)="displayAddField = false" styleClass="p-button-text"></p-button>
+    <p-button label="Save" icon="pi pi-check" (onClick)="addField()" [disabled]="!newField.field_label"></p-button>
+  </ng-template>
+</p-dialog>

frontend/src/app/templates/templates.component.scss

@@ -0,0 +1,298 @@
+.template-mapping-container {
+  height: calc(100vh - 100px);
+  padding: 1rem;
+  background-color: var(--surface-ground);
+}
+
+.panel-container {
+  display: flex;
+  flex-direction: column;
+  height: calc(100% - 1rem);
+  width: calc(100% - 1rem);
+  margin: 0.5rem;
+  background: var(--surface-card);
+  overflow: hidden;
+  border-radius: 8px;
+  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
+}
+
+.header-section {
+  padding: 1rem;
+  border-bottom: 1px solid var(--surface-border);
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+
+  h2 {
+    margin: 0;
+    font-size: 1.25rem;
+    font-weight: 600;
+  }
+}
+
+.preview-area, .mapping-area {
+  flex: 1;
+  overflow-y: auto;
+  padding: 1rem;
+  background-color: var(--surface-ground);
+}
+
+.empty-state {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  height: 100%;
+  color: var(--text-color-secondary);
+  text-align: center;
+}
+
+.document-canvas {
+  position: relative;
+  width: 100%;
+  background: white;
+  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
+  border-radius: 4px;
+  overflow: hidden;
+}
+
+/* Draggable Nodes */
+.layout-node {
+  position: absolute;
+  padding: 0.1rem;
+  background: rgba(255, 255, 255, 0.85);
+  border: 1px solid var(--surface-border);
+  border-radius: 2px;
+  transition: box-shadow 0.2s, border-color 0.2s;
+  overflow: hidden;
+  resize: both;
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+
+  &:hover {
+    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
+    z-index: 10;
+    border-color: var(--primary-color);
+  }
+  
+  &:active {
+    cursor: grabbing;
+  }
+
+  .node-type {
+    font-size: 0.5rem;
+    color: var(--text-color-secondary);
+    text-transform: uppercase;
+    font-weight: 600;
+    margin-bottom: 0.1rem;
+    line-height: 1;
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+  }
+
+  .node-text {
+    font-size: 0.7rem;
+    color: var(--text-color);
+    line-height: 1.1;
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+  }
+  
+  /* Color coding by block type - use borders now instead of thick left border */
+  &.header { border-color: #3B82F6; }
+  &.vendor { border-color: #8B5CF6; }
+  &.table_header { border-color: #F59E0B; }
+  &.total { border-color: #10B981; }
+  &.tax { border-color: #EF4444; }
+
+  .drag-handle {
+    position: absolute;
+    top: 2px;
+    left: 2px;
+    font-size: 0.6rem;
+    color: var(--text-color-secondary);
+    background: rgba(255, 255, 255, 0.9);
+    border-radius: 2px;
+    padding: 2px;
+    cursor: grab;
+    opacity: 0;
+    transition: opacity 0.2s;
+    z-index: 20;
+
+    &:active {
+      cursor: grabbing;
+    }
+    
+    &:hover {
+      color: var(--primary-color);
+      background: var(--primary-50);
+    }
+  }
+
+  &:hover .drag-handle {
+    opacity: 1;
+  }
+
+  .close-icon {
+    position: absolute;
+    top: 2px;
+    right: 2px;
+    font-size: 0.6rem;
+    color: var(--text-color-secondary);
+    background: rgba(255, 255, 255, 0.9);
+    border-radius: 50%;
+    padding: 2px;
+    cursor: pointer;
+    opacity: 0;
+    transition: opacity 0.2s;
+    z-index: 20;
+
+    &:hover {
+      color: var(--red-500);
+      background: var(--red-50);
+    }
+  }
+
+  &:hover .close-icon {
+    opacity: 1;
+  }
+}
+
+/* Template Mapping Side */
+.template-field-container {
+  background: white;
+  border: 1px solid var(--surface-border);
+  border-radius: 6px;
+  margin-bottom: 1rem;
+  overflow: hidden;
+
+  .field-header {
+    background: var(--surface-ground);
+    padding: 0.75rem 1rem;
+    border-bottom: 1px solid var(--surface-border);
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    
+    .badge {
+      font-size: 0.7rem;
+      padding: 0.2rem 0.5rem;
+      background: var(--primary-color);
+      color: var(--primary-color-text);
+      border-radius: 12px;
+    }
+  }
+
+  .drop-zone {
+    padding: 1rem;
+    min-height: 60px;
+    
+    .placeholder {
+      color: var(--text-color-secondary);
+      font-style: italic;
+      font-size: 0.85rem;
+    }
+  }
+}
+
+.mapped-node {
+  background: var(--primary-50);
+  color: var(--primary-900);
+  padding: 0.5rem;
+  border-radius: 4px;
+  font-size: 0.9rem;
+  border: 1px solid var(--primary-200);
+  display: flex;
+  align-items: center;
+}
+
+/* CDK Drag Drop */
+.cdk-drag-preview {
+  box-sizing: border-box;
+  border-radius: 4px;
+  box-shadow: 0 5px 5px -3px rgba(0, 0, 0, 0.2),
+              0 8px 10px 1px rgba(0, 0, 0, 0.14),
+              0 3px 14px 2px rgba(0, 0, 0, 0.12);
+}
+
+.cdk-drag-placeholder {
+  opacity: 0.3;
+}
+
+.cdk-drag-animating {
+  transition: transform 250ms cubic-bezier(0, 0, 0.2, 1);
+}
+
+/* Scanning Overlay Animation */
+.scanning-overlay {
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  background: rgba(255, 255, 255, 0.9);
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  z-index: 100;
+}
+
+.scanner-container {
+  position: relative;
+  width: 120px;
+  height: 120px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  border-radius: 8px;
+  overflow: hidden;
+  background: #f8f9fa;
+  box-shadow: inset 0 0 10px rgba(0,0,0,0.05);
+  border: 1px solid #e9ecef;
+}
+
+.scanner-doc {
+  z-index: 1;
+}
+
+.laser-beam {
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 3px;
+  background: var(--primary-color, #3b82f6);
+  box-shadow: 0 0 10px 2px var(--primary-color, #3b82f6);
+  z-index: 2;
+  animation: scan-laser 2s ease-in-out infinite alternate;
+}
+
+.scanner-grid {
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 100%;
+  background-image: linear-gradient(var(--primary-100, #dbeafe) 1px, transparent 1px),
+                    linear-gradient(90deg, var(--primary-100, #dbeafe) 1px, transparent 1px);
+  background-size: 10px 10px;
+  z-index: 0;
+  opacity: 0.5;
+  animation: scan-grid 4s linear infinite;
+}
+
+@keyframes scan-laser {
+  0% { top: -5%; opacity: 0; }
+  10% { opacity: 1; }
+  90% { opacity: 1; }
+  100% { top: 105%; opacity: 0; }
+}
+
+@keyframes scan-grid {
+  0% { background-position: 0 0; }
+  100% { background-position: 20px 20px; }
+}

frontend/src/app/templates/templates.component.ts

@@ -0,0 +1,394 @@
+import { Component, OnInit } from '@angular/core';
+import { CommonModule } from '@angular/common';
+import { FormsModule } from '@angular/forms';
+import { DragDropModule, CdkDragDrop, moveItemInArray, transferArrayItem, copyArrayItem } from '@angular/cdk/drag-drop';
+import { SplitterModule } from 'primeng/splitter';
+import { ButtonModule } from 'primeng/button';
+import { DialogModule } from 'primeng/dialog';
+import { InputTextModule } from 'primeng/inputtext';
+import { DropdownModule } from 'primeng/dropdown';
+import { TableModule } from 'primeng/table';
+import { ToastModule } from 'primeng/toast';
+import { MessageService } from 'primeng/api';
+
+import { TemplateService, DocumentLayout, TemplateField } from '../services/template.service';
+
+@Component({
+  selector: 'app-templates',
+  standalone: true,
+  imports: [
+    CommonModule,
+    FormsModule,
+    DragDropModule,
+    SplitterModule,
+    ButtonModule,
+    DialogModule,
+    InputTextModule,
+    DropdownModule,
+    TableModule,
+    ToastModule
+  ],
+  providers: [MessageService],
+  templateUrl: './templates.component.html',
+  styleUrls: ['./templates.component.scss']
+})
+export class TemplatesComponent implements OnInit {
+  // Document State
+  documentId: string | null = null;
+  layoutNodes: DocumentLayout[] = [];
+  pages: { page_number: number, nodes: DocumentLayout[], width: number, height: number }[] = [];
+  pageWidth: number = 800;
+  pageHeight: number = 1100;
+  
+  // Template State
+  templateName: string = '';
+  templateFields: TemplateField[] = [];
+  mappings: { [fieldId: number]: DocumentLayout[] } = {};
+  
+  // UI State
+  displayAddField: boolean = false;
+  isScanning: boolean = false;
+  scanProgress: number = 0;
+  currentTemplateId: string | null = null;
+  newField: TemplateField = { field_label: '', field_type: 'TEXT', display_order: 0, required_flag: false };
+  fieldTypes = [
+    { label: 'TEXT', value: 'TEXT' },
+    { label: 'NUMBER', value: 'NUMBER' },
+    { label: 'DATE', value: 'DATE' },
+    { label: 'DATETIME', value: 'DATETIME' },
+    { label: 'AMOUNT', value: 'AMOUNT' },
+    { label: 'ADDRESS', value: 'ADDRESS' },
+    { label: 'TABLE_COLUMN', value: 'TABLE_COLUMN' }
+  ];
+
+  constructor(
+    private templateService: TemplateService,
+    private messageService: MessageService
+  ) {}
+
+  ngOnInit(): void {}
+
+  onFileUpload(event: any) {
+    const file = event.target.files[0];
+    if (file) {
+      this.currentTemplateId = null;
+      this.templateName = '';
+      this.templateFields = [];
+      this.mappings = {};
+      
+      this.templateService.uploadDocument(file).subscribe({
+        next: (res) => {
+          this.documentId = res.id || res.pk_document_id;
+          this.messageService.add({ severity: 'success', summary: 'Uploaded', detail: 'Document uploaded successfully.' });
+          this.isScanning = true;
+          this.fetchLayout();
+        },
+        error: (err) => {
+          this.messageService.add({ severity: 'error', summary: 'Error', detail: 'Upload failed.' });
+        }
+      });
+    }
+  }
+
+  fetchLayout() {
+    if (!this.documentId) return;
+    this.templateService.getDocumentLayout(this.documentId).subscribe({
+      next: (layouts) => {
+        if (layouts.length === 0) {
+          // Document might still be processing in the background Celery worker
+          // Poll again after 2 seconds
+          setTimeout(() => this.fetchLayout(), 2000);
+          return;
+        }
+        
+        this.isScanning = false;
+        this.layoutNodes = layouts;
+        
+        const pageMap = new Map<number, { page_number: number, nodes: DocumentLayout[], width: number, height: number }>();
+        
+        layouts.forEach(node => {
+          if (!pageMap.has(node.page_no)) {
+            pageMap.set(node.page_no, {
+              page_number: node.page_no,
+              nodes: [],
+              width: node.page_width,
+              height: node.page_height
+            });
+          }
+          pageMap.get(node.page_no)!.nodes.push(node);
+        });
+        
+        this.pages = Array.from(pageMap.values()).sort((a, b) => a.page_number - b.page_number);
+        
+        if (this.pages.length > 0) {
+          this.pageWidth = this.pages[0].width;
+          this.pageHeight = this.pages[0].height;
+        }
+        // Trigger auto-recognition
+        this.autoRecognize();
+      }
+    });
+  }
+  
+  autoRecognize() {
+    if (!this.documentId) return;
+    this.templateService.recognizeTemplate(this.documentId).subscribe({
+      next: (matches) => {
+        if (matches && matches.length > 0 && matches[0].confidence_score > 0.5) {
+          const match = matches[0];
+          this.messageService.add({ severity: 'info', summary: 'Template Recognized', detail: `Confidence: ${(match.confidence_score * 100).toFixed(1)}%` });
+          
+            this.templateService.getTemplate(match.format_id).subscribe({
+              next: (templateData) => {
+                this.templateName = templateData.name;
+                this.currentTemplateId = match.format_id;
+                this.templateFields = [];
+                this.mappings = {};
+              
+              if (templateData.cells) {
+                templateData.cells.forEach((cell: any) => {
+                  if (cell.is_dynamic) {
+                    const fieldId = new Date().getTime() + Math.random();
+                    this.templateFields.push({
+                      pk_template_field_id: fieldId as any,
+                      field_label: cell.field_name,
+                      field_type: cell.data_type,
+                      display_order: cell.sequence,
+                      required_flag: false
+                    });
+                    this.mappings[fieldId] = [];
+                  }
+                });
+              }
+              
+              if (templateData.regions) {
+                templateData.regions.forEach((region: any) => {
+                  if (region.region_type === 'field_mapping' && region.content && region.content.field_name) {
+                    const field = this.templateFields.find(f => f.field_label === region.content.field_name);
+                    if (field && field.pk_template_field_id) {
+                      // Find the corresponding page in the current document
+                      const page = this.pages.find(p => p.page_number === region.page_number);
+                      if (page) {
+                        let bestMatchIdx = -1;
+                        let bestOverlap = 0;
+                        
+                        // Find the text node on the canvas that overlaps most with this region's bounding box
+                        for (let i = 0; i < page.nodes.length; i++) {
+                          const node = page.nodes[i];
+                          const x_overlap = Math.max(0, Math.min(region.x + region.width, node.x_coordinate + node.width) - Math.max(region.x, node.x_coordinate));
+                          const y_overlap = Math.max(0, Math.min(region.y + region.height, node.y_coordinate + node.height) - Math.max(region.y, node.y_coordinate));
+                          const overlapArea = x_overlap * y_overlap;
+                          
+                          if (overlapArea > bestOverlap) {
+                            bestOverlap = overlapArea;
+                            bestMatchIdx = i;
+                          }
+                        }
+                        
+                        // If we found a matching node (at least some overlap), clone it to mappings
+                        if (bestMatchIdx !== -1) {
+                          const matchedNode = page.nodes[bestMatchIdx];
+                          
+                          // Because *ngFor tracks objects by reference, we clone it
+                          this.mappings[field.pk_template_field_id].push({...matchedNode});
+                        }
+                      }
+                    }
+                  }
+                });
+              }
+            }
+          });
+        }
+      }
+    });
+  }
+
+  showAddFieldDialog() {
+    this.newField = { field_label: '', field_type: 'TEXT', display_order: this.templateFields.length, required_flag: false };
+    this.displayAddField = true;
+  }
+
+  addField() {
+    if (!this.newField.field_label) return;
+    this.newField.pk_template_field_id = new Date().getTime(); // mock ID until saved
+    this.templateFields.push({ ...this.newField });
+    this.mappings[this.newField.pk_template_field_id] = [];
+    this.displayAddField = false;
+  }
+
+  removeField(fieldId?: number) {
+    if (!fieldId) return;
+    this.templateFields = this.templateFields.filter(f => f.pk_template_field_id !== fieldId);
+    delete this.mappings[fieldId];
+  }
+
+  saveTemplateAndMappings() {
+    if (!this.templateName || this.templateName.trim() === '') {
+      this.messageService.add({ severity: 'warn', summary: 'Warning', detail: 'Please provide a template name.' });
+      return;
+    }
+    
+    if (this.templateFields.length === 0) {
+      this.messageService.add({ severity: 'warn', summary: 'Warning', detail: 'Please add at least one template field.' });
+      return;
+    }
+    
+    const payload = {
+      template_name: this.templateName,
+      source_document_id: this.documentId || undefined,
+      fields: this.templateFields
+    };
+
+    const saveRequest = this.currentTemplateId
+      ? this.templateService.updateTemplate(this.currentTemplateId, payload)
+      : this.templateService.createTemplate(payload);
+
+    saveRequest.subscribe({
+      next: (res: any) => {
+        const templateId = res.pk_template_id;
+        
+        // Construct the mappings payload
+        const mappingsPayload: any[] = [];
+        this.templateFields.forEach(field => {
+          const fieldId = field.pk_template_field_id;
+          if (fieldId && this.mappings[fieldId] && this.mappings[fieldId].length > 0) {
+            mappingsPayload.push({
+              field_name: field.field_label,
+              mapped_nodes: this.mappings[fieldId]
+            });
+          }
+        });
+        
+        if (mappingsPayload.length > 0) {
+          this.templateService.saveMappings(templateId, mappingsPayload).subscribe({
+            next: () => {
+              this.messageService.add({ severity: 'success', summary: 'Success', detail: 'Template & Mappings saved successfully.' });
+            },
+            error: (err) => {
+              this.messageService.add({ severity: 'error', summary: 'Error', detail: 'Failed to save mappings.' });
+            }
+          });
+        } else {
+          this.messageService.add({ severity: 'success', summary: 'Success', detail: 'Template saved successfully (No mappings).' });
+        }
+      },
+      error: (err) => {
+        this.messageService.add({ severity: 'error', summary: 'Error', detail: 'Failed to save template.' });
+      }
+    });
+  }
+
+  // Drag and Drop Logic
+  drop(event: CdkDragDrop<DocumentLayout[]>, fieldId?: number) {
+    if (event.previousContainer === event.container) {
+      // Do nothing! This allows the item to naturally snap back to its original position 
+      // since it's a failed drop (didn't land in a mapping field).
+    } else {
+      const isFromCanvas = event.previousContainer.id.startsWith('document-layout-list');
+      const isToCanvas = event.container.id.startsWith('document-layout-list');
+      
+      if (isFromCanvas && !isToCanvas) {
+        // Drag from Canvas -> Field
+        // We use event.item.data which perfectly tracks the dragged object regardless of DOM indexes
+        const clonedNode = JSON.parse(JSON.stringify(event.item.data));
+        
+        // Sanitize the value if dropped on an AMOUNT or NUMBER field
+        if (fieldId) {
+          const field = this.templateFields.find(f => f.pk_template_field_id === fieldId);
+          if (field && (field.field_type === 'AMOUNT' || field.field_type === 'NUMBER') && clonedNode.text_value) {
+            const numericText = clonedNode.text_value.replace(/[^\d\.-]/g, '');
+            const floatValue = parseFloat(numericText);
+            if (!isNaN(floatValue)) {
+              clonedNode.text_value = floatValue.toString();
+            } else {
+              clonedNode.text_value = '';
+            }
+          } else if (field && (field.field_type === 'DATE' || field.field_type === 'DATETIME') && clonedNode.text_value) {
+            // Attempt to parse the date and output standard format
+            const timestamp = Date.parse(clonedNode.text_value);
+            if (!isNaN(timestamp)) {
+              const parsedDate = new Date(timestamp);
+              // Extract YYYY-MM-DD
+              const yyyy = parsedDate.getFullYear();
+              const mm = String(parsedDate.getMonth() + 1).padStart(2, '0');
+              const dd = String(parsedDate.getDate()).padStart(2, '0');
+              if (field.field_type === 'DATE') {
+                clonedNode.text_value = `${yyyy}-${mm}-${dd}`;
+              } else {
+                const hh = String(parsedDate.getHours()).padStart(2, '0');
+                const min = String(parsedDate.getMinutes()).padStart(2, '0');
+                const ss = String(parsedDate.getSeconds()).padStart(2, '0');
+                clonedNode.text_value = `${yyyy}-${mm}-${dd}T${hh}:${min}:${ss}`;
+              }
+            } else {
+              // If we can't parse it reliably on frontend, we leave it or let backend handle it
+              // We'll leave it as is to give user visual feedback, backend parser is more robust (dateutil)
+            }
+          }
+        }
+        
+        // Insert the clone into the destination mapping field
+        event.container.data.splice(event.currentIndex, 0, clonedNode);
+        
+        // Force Angular to completely recreate the DOM elements for this specific canvas page.
+        // By using .map(node => ({...node})), we change every object's identity. 
+        // This forces Angular to destroy the corrupted DOM element (which CDK moved and left a translate3d on) 
+        // and recreate it fresh with its original absolute coordinates!
+        const pageIndex = parseInt(event.previousContainer.id.split('-').pop() || '0');
+        if (!isNaN(pageIndex) && this.pages[pageIndex]) {
+          this.pages[pageIndex].nodes = this.pages[pageIndex].nodes.map(node => ({...node}));
+          
+          // Also explicitly clear the transform on the dragged element just in case CDK holds a ref to it
+          event.item.element.nativeElement.style.transform = '';
+        }
+        
+      } else if (!isFromCanvas && isToCanvas) {
+        // Drag from Field -> Canvas (Delete from Field)
+        event.previousContainer.data.splice(event.previousIndex, 1);
+      } else {
+        // Drag from Field -> Field (Move)
+        transferArrayItem(
+          event.previousContainer.data,
+          event.container.data,
+          event.previousIndex,
+          event.currentIndex,
+        );
+      }
+    }
+  }
+  
+  onNodeMouseUp(node: DocumentLayout, event: MouseEvent) {
+    // If the user resized the node using the native CSS resize handle, save the new size
+    const el = event.currentTarget as HTMLElement;
+    if (el.style.width && el.style.width.endsWith('px')) {
+      const parentRect = el.parentElement!.getBoundingClientRect();
+      node.width = (el.offsetWidth / parentRect.width) * node.page_width;
+      node.height = (el.offsetHeight / parentRect.height) * node.page_height;
+      
+      // Clear the inline pixel styles so Angular bindings take over smoothly
+      el.style.width = '';
+      el.style.height = '';
+    }
+  }
+  
+  getConnectedDropLists() {
+    // Return all field ID strings as drop lists
+    return this.templateFields.map(f => 'field-' + f.pk_template_field_id);
+  }
+
+  getCanvasDropLists() {
+    return this.pages.map((_, i) => 'document-layout-list-' + i);
+  }
+
+  removeNode(pageIndex: number, nodeIndex: number, event: Event) {
+    event.stopPropagation();
+    this.pages[pageIndex].nodes.splice(nodeIndex, 1);
+  }
+
+  removeFromField(fieldId: number, nodeIndex: number) {
+    if (this.mappings[fieldId]) {
+      this.mappings[fieldId].splice(nodeIndex, 1);
+    }
+  }
+}

frontend/src/app/templates/templates.html

@@ -0,0 +1 @@
+<p>templates works!</p>

frontend/src/app/templates/templates.ts

@@ -0,0 +1,11 @@
+import { Component } from '@angular/core';
+
+@Component({
+  selector: 'app-templates',
+  imports: [],
+  templateUrl: './templates.html',
+  styleUrl: './templates.scss',
+})
+export class Templates {
+
+}

frontend/src/environments/environment.ts

@@ -6,5 +6,6 @@ export const environment = {
   userService: 'http://localhost:1701/cygnus/app/api/v1/user',
   masterService: 'http://localhost:1702/cygnus/app/api/v1/master',
   toolsService: 'http://localhost:1703/cygnus/app/api/v1/tools',
+  docEngineService: 'http://localhost:7989/api/v1',
   rsaPublicKey: `MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAq3RFV/f6ybsOF2m7NBLPUTMBq9b0frJG1HdIDYmrD9Wr1/aGBxTSJwq8IHFlatNpBF3OlJv9uEOybWMM1vXli4IgsuPPmcTOZsQ/O/9UGyBSL6apevNCw6pC1oa0MVLaN6COMAhDr+ri/PYiPQUcYsjDqghmAghMk99umHGUihz/oY/qgxzO+Q9cqePmjpH5c5RaXGBrOQxKoPlm7Uj6MqAfBhLC360VbcMot4XDoV+VeQXMzH0o6e870jdClsLOq1VsCA27jVvafj+HwaJ15ny9UWWilDuS/X8Sd7v+Rmd+qNezi6ROcglyaisXwKfeTWM8/o7HiUco2fL230+jEQIDAQAB`
 };

list_templates.py

@@ -0,0 +1,11 @@
+import sys
+import os
+sys.path.append(os.path.join(os.getcwd(), 'docengine'))
+
+from app.core.database import SessionLocal
+from app.models.template import DocumentFormat
+
+db = SessionLocal()
+templates = db.query(DocumentFormat).all()
+for t in templates:
+    print(f"ID: {t.id}, Name: {t.name}, Source: {t.source_document_id}, Active: {t.is_active}")

oss-microservices/.env

@@ -1,5 +0,0 @@
-DB_HOST=192.168.0.111
-DB_PORT=7925
-DB_NAME=ocr
-DB_USER=postgres
-DB_PASSWORD=M@tr!x#149@dm!N

oss-microservices/AdminService/AdminService.API/AdminService.API.csproj

@@ -1,26 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk.Web">
-
-  <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
-    <Nullable>enable</Nullable>
-    <ImplicitUsings>enable</ImplicitUsings>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="8.0.27" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="8.0.8">
-      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
-      <PrivateAssets>all</PrivateAssets>
-    </PackageReference>
-    <PackageReference Include="Swashbuckle.AspNetCore" Version="6.6.2" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\AdminService.Infrastructure\AdminService.Infrastructure.csproj" />
-    <ProjectReference Include="..\AdminService.Domain\AdminService.Domain.csproj" />
-    <ProjectReference Include="..\..\Shared.Contracts\Shared.Contracts.csproj" />
-    <ProjectReference Include="..\..\Shared.Commons\Shared.Commons.csproj" />
-    <ProjectReference Include="..\AdminService.Application\AdminService.Application.csproj" />
-  </ItemGroup>
-
-</Project>

oss-microservices/AdminService/AdminService.API/AdminService.API.http

@@ -1,6 +0,0 @@
-@AdminService.API_HostAddress = http://localhost:5066
-
-GET {{AdminService.API_HostAddress}}/weatherforecast/
-Accept: application/json
-
-###

oss-microservices/AdminService/AdminService.API/Program.cs

@@ -1,26 +0,0 @@
-using AdminService.Infrastructure;
-
-var builder = WebApplication.CreateBuilder(args);
-
-builder.Services.AddControllers();
-
-builder.Services.AddInfrastructure(builder.Configuration);
-
-builder.Services.AddEndpointsApiExplorer();
-builder.Services.AddSwaggerGen();
-
-var app = builder.Build();
-
-if (app.Environment.IsDevelopment())
-{
-    app.UseSwagger();
-    app.UseSwaggerUI();
-}
-
-app.UseHttpsRedirection();
-
-app.UseAuthorization();
-
-app.MapControllers();
-
-app.Run();

oss-microservices/AdminService/AdminService.API/Properties/launchSettings.json

@@ -1,41 +0,0 @@
-{
-  "$schema": "http://json.schemastore.org/launchsettings.json",
-  "iisSettings": {
-    "windowsAuthentication": false,
-    "anonymousAuthentication": true,
-    "iisExpress": {
-      "applicationUrl": "http://localhost:20091",
-      "sslPort": 44325
-    }
-  },
-  "profiles": {
-    "http": {
-      "commandName": "Project",
-      "dotnetRunMessages": true,
-      "launchBrowser": true,
-      "launchUrl": "swagger",
-      "applicationUrl": "http://localhost:5066",
-      "environmentVariables": {
-        "ASPNETCORE_ENVIRONMENT": "Development"
-      }
-    },
-    "https": {
-      "commandName": "Project",
-      "dotnetRunMessages": true,
-      "launchBrowser": true,
-      "launchUrl": "swagger",
-      "applicationUrl": "https://localhost:7244;http://localhost:5066",
-      "environmentVariables": {
-        "ASPNETCORE_ENVIRONMENT": "Development"
-      }
-    },
-    "IIS Express": {
-      "commandName": "IISExpress",
-      "launchBrowser": true,
-      "launchUrl": "swagger",
-      "environmentVariables": {
-        "ASPNETCORE_ENVIRONMENT": "Development"
-      }
-    }
-  }
-}

oss-microservices/AdminService/AdminService.API/appsettings.Development.json

@@ -1,11 +0,0 @@
-{
-  "ConnectionStrings": {
-    "DefaultConnection": "Host=192.168.0.111;Port=7925;Database=ocr;Username=postgres;Password=M@tr!x#149@dm!N"
-  },
-  "Logging": {
-    "LogLevel": {
-      "Default": "Information",
-      "Microsoft.AspNetCore": "Warning"
-    }
-  }
-}

oss-microservices/AdminService/AdminService.API/appsettings.json

@@ -1,9 +0,0 @@
-{
-  "Logging": {
-    "LogLevel": {
-      "Default": "Information",
-      "Microsoft.AspNetCore": "Warning"
-    }
-  },
-  "AllowedHosts": "*"
-}

oss-microservices/AdminService/AdminService.API/bin/Debug/net8.0/AdminService.API.deps.json

@@ -1,968 +0,0 @@
-{
-  "runtimeTarget": {
-    "name": ".NETCoreApp,Version=v8.0",
-    "signature": ""
-  },
-  "compilationOptions": {},
-  "targets": {
-    ".NETCoreApp,Version=v8.0": {
-      "AdminService.API/1.0.0": {
-        "dependencies": {
-          "AdminService.Application": "1.0.0",
-          "AdminService.Domain": "1.0.0",
-          "AdminService.Infrastructure": "1.0.0",
-          "Microsoft.AspNetCore.OpenApi": "8.0.27",
-          "Microsoft.EntityFrameworkCore.Design": "8.0.8",
-          "Shared.Commons": "1.0.0",
-          "Shared.Contracts": "1.0.0",
-          "Swashbuckle.AspNetCore": "6.6.2"
-        },
-        "runtime": {
-          "AdminService.API.dll": {}
-        }
-      },
-      "Humanizer.Core/2.14.1": {
-        "runtime": {
-          "lib/net6.0/Humanizer.dll": {
-            "assemblyVersion": "2.14.0.0",
-            "fileVersion": "2.14.1.48190"
-          }
-        }
-      },
-      "Microsoft.AspNetCore.OpenApi/8.0.27": {
-        "dependencies": {
-          "Microsoft.OpenApi": "1.6.14"
-        },
-        "runtime": {
-          "lib/net8.0/Microsoft.AspNetCore.OpenApi.dll": {
-            "assemblyVersion": "8.0.27.0",
-            "fileVersion": "8.0.2726.23008"
-          }
-        }
-      },
-      "Microsoft.Bcl.AsyncInterfaces/6.0.0": {
-        "runtime": {
-          "lib/netstandard2.1/Microsoft.Bcl.AsyncInterfaces.dll": {
-            "assemblyVersion": "6.0.0.0",
-            "fileVersion": "6.0.21.52210"
-          }
-        }
-      },
-      "Microsoft.CodeAnalysis.Analyzers/3.3.3": {},
-      "Microsoft.CodeAnalysis.Common/4.5.0": {
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oss-microservices/AdminService/AdminService.API/bin/Debug/net8.0/AdminService.API.runtimeconfig.json

@@ -1,20 +0,0 @@
-{
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-        "version": "8.0.0"
-      },
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-        "version": "8.0.0"
-      }
-    ],
-    "configProperties": {
-      "System.GC.Server": true,
-      "System.Reflection.NullabilityInfoContext.IsSupported": true,
-      "System.Runtime.Serialization.EnableUnsafeBinaryFormatterSerialization": false
-    }
-  }
-}