556 lines
22 KiB
Python
556 lines
22 KiB
Python
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from fastapi import FastAPI, HTTPException, UploadFile, File
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from fastapi.middleware.cors import CORSMiddleware
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from datetime import datetime
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from typing import List
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import uuid
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import csv
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import io
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import logging
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# Configure logging
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logging.basicConfig(
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level=logging.INFO,
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format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
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handlers=[
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logging.FileHandler('app.log'),
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logging.StreamHandler()
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]
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)
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logger = logging.getLogger(__name__)
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from api_models import (
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MatchingRequest, MatchingResponse, MatchResponse,
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ApprovalRequest, RuleRequest, DocumentUploadResponse,
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DocumentProcessResponse, TransactionRequest
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)
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from models import Receipt, Transaction, Match
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from matching_engine import MatchingEngine
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from ai_rules import AIRule
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from document_processor import DocumentProcessor
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app = FastAPI(
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title="AI Bookkeeper - Data Science Engine",
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description="AI-powered receipt-to-transaction matching engine. Receives transaction data and provides intelligent matching capabilities.",
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version="1.0.0"
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)
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# CORS middleware
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app.add_middleware(
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CORSMiddleware,
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allow_origins=["*"],
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allow_credentials=True,
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allow_methods=["*"],
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allow_headers=["*"],
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)
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# Initialize DS Engine components
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matching_engine = MatchingEngine()
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document_processor = DocumentProcessor()
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# In-memory storage for uploaded files (in production, use a database)
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uploaded_files = {}
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# Store imported transactions globally for easy access
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stored_transactions = []
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processed_receipts = {}
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@app.get("/")
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async def root():
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"""Health check endpoint"""
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return {
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"message": "AI Bookkeeper Data Science Engine is running",
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"version": "1.0.0",
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"status": "healthy"
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}
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# ============================================================================
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# TRANSACTION IMPORT ENDPOINTS
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# ============================================================================
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@app.post("/transactions/import/csv")
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async def import_transactions_csv(file: UploadFile = File(...)):
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"""
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Import transactions from a CSV file (custom bank export format).
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"""
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try:
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content = await file.read()
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decoded = content.decode('utf-8')
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reader = csv.DictReader(io.StringIO(decoded))
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transactions = []
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errors = []
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for idx, row in enumerate(reader):
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try:
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# Use correct headers and strip whitespace
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account_number = row.get('Account Number') or row.get('Account Number '.strip())
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txn_date_raw = row.get('Transaction Date') or row.get('Transaction Date '.strip())
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amount_raw = row.get('Amount') or row.get('Amount '.strip())
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payee_name = row.get('Description 2') or row.get('Description 2 '.strip())
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memo = f"{row.get('Account Type','').strip()} {row.get('Cheque Number','').strip()} {row.get('Description 1','').strip()}".strip()
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# Compose ID
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txn_id = f"{account_number}_{idx+1}"
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# Parse date (try multiple formats)
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txn_date_str = txn_date_raw.strip()
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txn_date = None
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for fmt in ("%m/%d/%y", "%m/%d/%Y"):
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try:
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txn_date = datetime.strptime(txn_date_str, fmt).strftime("%Y-%m-%d")
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break
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except Exception:
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continue
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if not txn_date:
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raise ValueError(f"Could not parse date: {txn_date_str}")
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# Parse amount
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amount = float(amount_raw.replace(',', '').strip())
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transactions.append({
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"id": txn_id,
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"txn_date": txn_date,
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"amount": amount,
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"payee_name": payee_name.strip(),
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"memo": memo
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})
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except Exception as e:
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errors.append(f"Row {idx+1}: {str(e)}")
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# Store transactions globally for auto-matching
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global stored_transactions
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stored_transactions = transactions
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return {
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"imported_count": len(transactions),
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"converted_transactions": transactions,
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"errors": errors
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}
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except Exception as e:
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raise HTTPException(status_code=500, detail=str(e))
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@app.post("/transactions/import/image")
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async def import_transactions_from_image(file: UploadFile = File(...)):
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"""
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Import transactions from an image (bank statement, credit card statement, etc.) using AI extraction.
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"""
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try:
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# Validate file type
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allowed_types = ['jpg', 'jpeg', 'png', 'gif', 'bmp', 'pdf']
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file_extension = file.filename.split('.')[-1].lower()
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if file_extension not in allowed_types:
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raise HTTPException(status_code=400, detail=f"Unsupported file type. Allowed: {allowed_types}")
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# Read file content
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content = await file.read()
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# Save file to disk
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image_path = await document_processor.save_uploaded_file(content, file.filename)
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# Extract transactions from image (pass file path)
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extraction_result = await document_processor.extract_transactions_from_image(image_path)
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if not extraction_result.get("extraction_success", False):
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raise HTTPException(status_code=500, detail=extraction_result.get("error", "Extraction failed"))
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extracted_transactions = extraction_result.get("transactions", [])
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# Store transactions globally for auto-matching
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global stored_transactions
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stored_transactions = []
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for idx, txn in enumerate(extracted_transactions):
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try:
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txn_id = f"img_{file.filename}_{idx+1}"
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txn_date_raw = txn.get("date")
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amount = txn.get("amount")
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vendor = txn.get("vendor")
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memo = txn.get("memo", "")
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# Parse date to YYYY-MM-DD format
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txn_date = document_processor._parse_date_to_iso(txn_date_raw)
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if not txn_date:
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# Fallback: use current year if parsing fails
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txn_date = f"2024-{txn_date_raw}"
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stored_transactions.append({
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"id": txn_id,
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"txn_date": txn_date,
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"amount": amount,
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"payee_name": vendor,
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"memo": memo
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})
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except Exception as e:
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continue
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return {
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"imported_count": len(stored_transactions),
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"converted_transactions": stored_transactions,
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"errors": []
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}
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except Exception as e:
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logger.error(f"Error importing transactions from image: {str(e)}")
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raise HTTPException(status_code=500, detail=str(e))
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# ============================================================================
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# DOCUMENT PROCESSING ENDPOINTS
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# ============================================================================
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@app.post("/upload-multiple", response_model=List[DocumentUploadResponse])
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async def upload_multiple_documents(files: List[UploadFile] = File(...)):
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"""
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Upload multiple receipt images for processing.
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This endpoint accepts multiple image files and returns file IDs
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that can be used with the /process/{file_id} endpoint.
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"""
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try:
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responses = []
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for file in files:
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# Validate file type
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allowed_types = ['jpg', 'jpeg', 'png', 'gif', 'bmp', 'pdf']
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file_extension = file.filename.split('.')[-1].lower()
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if file_extension not in allowed_types:
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raise HTTPException(status_code=400, detail=f"Unsupported file type for {file.filename}. Allowed: {allowed_types}")
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# Generate unique file ID
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file_id = str(uuid.uuid4())
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# Read and store file content
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content = await file.read()
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uploaded_files[file_id] = {
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"filename": file.filename,
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"content": content,
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"upload_date": datetime.now()
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}
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responses.append(DocumentUploadResponse(
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file_id=file_id,
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filename=file.filename,
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file_type=file_extension,
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upload_date=datetime.now(),
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status="uploaded"
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))
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return responses
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except Exception as e:
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logger.error(f"Error uploading documents: {str(e)}")
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raise HTTPException(status_code=500, detail=str(e))
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@app.post("/process/{file_id}", response_model=DocumentProcessResponse)
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async def process_document(file_id: str):
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"""
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Process a previously uploaded document to extract receipt information.
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This endpoint uses AI to extract structured data from receipt images,
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including vendor, amount, date, and category information.
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"""
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try:
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# Check if file exists
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if file_id not in uploaded_files:
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raise HTTPException(status_code=404, detail=f"File {file_id} not found")
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file_data = uploaded_files[file_id]
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# Save file temporarily and process it
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file_path = await document_processor.save_uploaded_file(file_data["content"], file_data["filename"])
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file_type = file_data["filename"].split('.')[-1].lower()
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receipt_data = await document_processor.process_file(file_path, file_type)
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# Store processed receipt
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processed_receipts[file_id] = receipt_data
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return DocumentProcessResponse(
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file_id=file_id,
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extraction_success=receipt_data.get("extraction_success", False),
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vendor=receipt_data.get("vendor", ""),
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description=receipt_data.get("description", ""),
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total_amount=receipt_data.get("total_amount", 0.0),
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tax_amount=receipt_data.get("tax_amount", 0.0),
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date=receipt_data.get("date", ""),
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category=receipt_data.get("category", ""),
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confidence=receipt_data.get("confidence", 0.0),
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error=receipt_data.get("error", None)
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)
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except Exception as e:
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logger.error(f"Error processing document {file_id}: {str(e)}")
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raise HTTPException(status_code=500, detail=str(e))
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# ============================================================================
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# MATCHING ENDPOINTS
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# ============================================================================
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@app.post("/match-specific", response_model=MatchingResponse)
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async def match_specific_receipts(file_ids: List[str]):
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"""
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Match specific receipts against imported transactions.
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This endpoint takes a list of receipt file IDs and matches them against
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the currently imported transactions using AI-powered matching logic.
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"""
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try:
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logger.info(f"Starting match-specific for file IDs: {file_ids}")
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# Check if transactions are imported
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if not stored_transactions:
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logger.warning("No transactions imported")
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raise HTTPException(status_code=400, detail="No transactions imported. Please upload CSV first.")
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logger.info(f"Found {len(stored_transactions)} stored transactions")
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# Convert stored transactions to Transaction objects
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transactions = []
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for txn in stored_transactions:
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try:
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txn_date = datetime.strptime(txn["txn_date"], "%Y-%m-%d")
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transaction = Transaction(
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id=txn["id"],
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transaction_date=txn_date,
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amount=txn["amount"],
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vendor=txn["payee_name"],
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notes=txn["memo"]
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)
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transactions.append(transaction)
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except Exception as e:
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logger.warning(f"Error converting transaction {txn['id']}: {str(e)}")
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continue
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logger.info(f"Converted {len(transactions)} transactions")
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# Get receipts for the specified file IDs
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receipts = []
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missing_files = []
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for file_id in file_ids:
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if file_id in processed_receipts:
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receipt_data = processed_receipts[file_id]
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logger.info(f"DEBUG: receipt_data for {file_id}: {receipt_data}")
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logger.info(f"DEBUG: receipt_data keys for {file_id}: {list(receipt_data.keys())}")
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try:
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# Handle missing date field
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if "date" not in receipt_data or not receipt_data["date"]:
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logger.warning(f"Missing date for receipt {file_id}, using current date")
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receipt_date = datetime.now()
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else:
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receipt_date = datetime.strptime(receipt_data["date"], "%Y-%m-%d")
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# Handle missing amount field - try multiple possible keys
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amount = receipt_data.get("amount")
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if amount is None:
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amount = receipt_data.get("total_amount")
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if amount is None:
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amount = receipt_data.get("amount_total")
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if amount is None:
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logger.warning(f"Missing amount for receipt {file_id}, using 0.0")
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amount = 0.0
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# Ensure amount is a float
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try:
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amount = float(amount)
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except (ValueError, TypeError):
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logger.warning(f"Invalid amount '{amount}' for receipt {file_id}, using 0.0")
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amount = 0.0
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logger.info(f"DEBUG: amount for {file_id}: {amount}")
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# Handle missing vendor field
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vendor = receipt_data.get("vendor", "")
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if not vendor:
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logger.warning(f"Missing vendor for receipt {file_id}, using 'Unknown'")
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vendor = "Unknown"
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# Handle missing category field
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category = receipt_data.get("category", "Other")
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# Handle description field
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description = receipt_data.get("description", "")
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# Handle tax field
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tax = receipt_data.get("tax", receipt_data.get("tax_amount", 0.0))
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try:
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tax = float(tax)
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except (ValueError, TypeError):
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tax = 0.0
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receipt = Receipt(
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id=file_id,
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file_name=uploaded_files[file_id]["filename"],
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upload_date=uploaded_files[file_id]["upload_date"],
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receipt_date=receipt_date,
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amount=amount,
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tax=tax,
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vendor=vendor,
|
||
|
|
category=category,
|
||
|
|
description=description
|
||
|
|
)
|
||
|
|
receipts.append(receipt)
|
||
|
|
logger.info(f"Added receipt: {receipt.vendor} - ${receipt.amount}")
|
||
|
|
except Exception as e:
|
||
|
|
logger.warning(f"Error creating receipt object for {file_id}: {str(e)}")
|
||
|
|
missing_files.append(f"{file_id} (error: {str(e)})")
|
||
|
|
else:
|
||
|
|
logger.warning(f"Receipt {file_id} not found in processed_receipts")
|
||
|
|
missing_files.append(f"{file_id} (not found)")
|
||
|
|
|
||
|
|
if missing_files:
|
||
|
|
logger.error(f"Missing files: {missing_files}")
|
||
|
|
raise HTTPException(status_code=400, detail=f"Missing files: {missing_files}")
|
||
|
|
|
||
|
|
logger.info(f"Processing {len(receipts)} receipts against {len(transactions)} transactions")
|
||
|
|
|
||
|
|
# Perform matching
|
||
|
|
try:
|
||
|
|
logger.info("Starting direct matching call (without ThreadPoolExecutor)")
|
||
|
|
logger.info(f"matching_engine type: {type(matching_engine)}")
|
||
|
|
logger.info(f"matching_engine.process_matching type: {type(matching_engine.process_matching)}")
|
||
|
|
logger.info(f"receipts type: {type(receipts)}, length: {len(receipts)}")
|
||
|
|
logger.info(f"transactions type: {type(transactions)}, length: {len(transactions)}")
|
||
|
|
|
||
|
|
matches = matching_engine.process_matching(receipts, transactions)
|
||
|
|
|
||
|
|
logger.info(f"Matching completed successfully. Found {len(matches)} matches")
|
||
|
|
|
||
|
|
# Convert matches to response format
|
||
|
|
match_responses = []
|
||
|
|
for match in matches:
|
||
|
|
logger.info(f"Raw match object: {match}")
|
||
|
|
logger.info(f" receipt_id: {match.receipt.id}")
|
||
|
|
logger.info(f" transaction_id: {match.transaction.id}")
|
||
|
|
logger.info(f" confidence_score: {match.confidence_score}")
|
||
|
|
logger.info(f" match_reason: {match.match_reason}")
|
||
|
|
logger.info(f" receipt_vendor: {match.receipt.vendor}")
|
||
|
|
logger.info(f" receipt_amount: {match.receipt.amount}")
|
||
|
|
logger.info(f" transaction_vendor: {match.transaction.vendor}")
|
||
|
|
logger.info(f" transaction_amount: {match.transaction.amount}")
|
||
|
|
|
||
|
|
match_response = MatchResponse(
|
||
|
|
receipt_id=match.receipt.id,
|
||
|
|
transaction_id=match.transaction.id,
|
||
|
|
confidence_score=match.confidence_score,
|
||
|
|
match_reason=match.match_reason,
|
||
|
|
receipt_vendor=match.receipt.vendor,
|
||
|
|
receipt_amount=match.receipt.amount,
|
||
|
|
receipt_description=match.receipt.description,
|
||
|
|
receipt_category=match.receipt.category,
|
||
|
|
receipt_tax_amount=match.receipt.tax,
|
||
|
|
transaction_vendor=match.transaction.vendor,
|
||
|
|
transaction_amount=match.transaction.amount
|
||
|
|
)
|
||
|
|
match_responses.append(match_response)
|
||
|
|
logger.info(f"Successfully created MatchResponse for {match.receipt.vendor} -> {match.transaction.vendor}")
|
||
|
|
|
||
|
|
logger.info(f"Formatted {len(match_responses)} match responses")
|
||
|
|
|
||
|
|
# Calculate statistics
|
||
|
|
if match_responses:
|
||
|
|
high_confidence = sum(1 for m in match_responses if m.confidence_score >= 0.8)
|
||
|
|
low_confidence = len(match_responses) - high_confidence
|
||
|
|
avg_score = sum(m.confidence_score for m in match_responses) / len(match_responses)
|
||
|
|
else:
|
||
|
|
high_confidence = low_confidence = avg_score = 0
|
||
|
|
|
||
|
|
stats = {
|
||
|
|
"total": len(match_responses),
|
||
|
|
"high_confidence": high_confidence,
|
||
|
|
"low_confidence": low_confidence,
|
||
|
|
"avg_score": round(avg_score, 2)
|
||
|
|
}
|
||
|
|
|
||
|
|
logger.info(f"Generated stats: {stats}")
|
||
|
|
logger.info(f"Match-specific completed successfully with {len(match_responses)} matches")
|
||
|
|
|
||
|
|
return MatchingResponse(
|
||
|
|
matches=match_responses,
|
||
|
|
stats=stats
|
||
|
|
)
|
||
|
|
|
||
|
|
except Exception as e:
|
||
|
|
logger.error(f"Exception in matching section: {str(e)}")
|
||
|
|
logger.error(f"Exception type: {type(e)}")
|
||
|
|
logger.error(f"Exception args: {e.args}")
|
||
|
|
logger.error(f"Traceback: {e.__traceback__}")
|
||
|
|
raise HTTPException(status_code=500, detail=f"Unexpected matching error: {str(e)}")
|
||
|
|
|
||
|
|
except HTTPException:
|
||
|
|
raise
|
||
|
|
except Exception as e:
|
||
|
|
logger.error(f"Unexpected error in match_specific_receipts: {str(e)}")
|
||
|
|
raise HTTPException(status_code=500, detail=str(e))
|
||
|
|
|
||
|
|
# ============================================================================
|
||
|
|
# RULES MANAGEMENT ENDPOINTS
|
||
|
|
# ============================================================================
|
||
|
|
|
||
|
|
@app.post("/rules")
|
||
|
|
async def add_rule(request: RuleRequest):
|
||
|
|
"""
|
||
|
|
Add a new AI rule for transaction matching.
|
||
|
|
"""
|
||
|
|
try:
|
||
|
|
new_rule = AIRule(
|
||
|
|
name=request.name,
|
||
|
|
condition=request.condition,
|
||
|
|
action=request.action,
|
||
|
|
source=request.source
|
||
|
|
)
|
||
|
|
|
||
|
|
matching_engine.rules_engine.rules.append(new_rule)
|
||
|
|
|
||
|
|
return {"message": f"Rule '{request.name}' added successfully"}
|
||
|
|
|
||
|
|
except Exception as e:
|
||
|
|
raise HTTPException(status_code=500, detail=str(e))
|
||
|
|
|
||
|
|
@app.get("/rules")
|
||
|
|
async def get_rules():
|
||
|
|
"""
|
||
|
|
Get all current AI rules.
|
||
|
|
"""
|
||
|
|
try:
|
||
|
|
rules = []
|
||
|
|
for rule in matching_engine.rules_engine.rules:
|
||
|
|
rules.append({
|
||
|
|
"name": rule.name,
|
||
|
|
"condition": rule.condition,
|
||
|
|
"action": rule.action,
|
||
|
|
"source": rule.source,
|
||
|
|
"status": rule.status
|
||
|
|
})
|
||
|
|
|
||
|
|
return {"rules": rules}
|
||
|
|
|
||
|
|
except Exception as e:
|
||
|
|
raise HTTPException(status_code=500, detail=str(e))
|
||
|
|
|
||
|
|
@app.delete("/rules/{rule_name}")
|
||
|
|
async def delete_rule(rule_name: str):
|
||
|
|
"""
|
||
|
|
Delete an AI rule by name.
|
||
|
|
"""
|
||
|
|
try:
|
||
|
|
rules = matching_engine.rules_engine.rules
|
||
|
|
for i, rule in enumerate(rules):
|
||
|
|
if rule.name == rule_name:
|
||
|
|
del rules[i]
|
||
|
|
return {"message": f"Rule '{rule_name}' deleted successfully"}
|
||
|
|
|
||
|
|
raise HTTPException(status_code=404, detail=f"Rule '{rule_name}' not found")
|
||
|
|
|
||
|
|
except HTTPException:
|
||
|
|
raise
|
||
|
|
except Exception as e:
|
||
|
|
raise HTTPException(status_code=500, detail=str(e))
|
||
|
|
|
||
|
|
# ============================================================================
|
||
|
|
# STATISTICS ENDPOINT
|
||
|
|
# ============================================================================
|
||
|
|
|
||
|
|
@app.get("/stats")
|
||
|
|
async def get_stats():
|
||
|
|
"""
|
||
|
|
Get system statistics.
|
||
|
|
"""
|
||
|
|
try:
|
||
|
|
return {
|
||
|
|
"total_transactions": len(stored_transactions),
|
||
|
|
"total_receipts": len(processed_receipts),
|
||
|
|
"total_uploaded_files": len(uploaded_files),
|
||
|
|
"rules_count": len(matching_engine.rules_engine.rules)
|
||
|
|
}
|
||
|
|
|
||
|
|
except Exception as e:
|
||
|
|
raise HTTPException(status_code=500, detail=str(e))
|
||
|
|
|
||
|
|
if __name__ == "__main__":
|
||
|
|
import uvicorn
|
||
|
|
uvicorn.run(app, host="0.0.0.0", port=8343)
|