Refactoring code for modular approach
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261
app/api/v1/products.py
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261
app/api/v1/products.py
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from typing import Optional
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from fastapi import APIRouter, Depends, HTTPException, Query
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from fastapi.responses import StreamingResponse
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from sqlalchemy.orm import Session
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from app.core.database import get_db
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from app.api.deps import get_current_user
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from models.api_models import (ProductListResponse, ProductResponse, ProductCreate, ProductDetailResponse,
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StockLocationResponse, StockSummaryResponse, ProductUpdate)
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from models.database_models import User, Product, Stock
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from datetime import datetime
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import logging
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from utils.data_processing import GTINProcessor, PriceProcessor
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router = APIRouter()
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logger = logging.getLogger(__name__)
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# Initialize processors
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gtin_processor = GTINProcessor()
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price_processor = PriceProcessor()
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# Enhanced Product Routes with Marketplace Support
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@router.get("/products", response_model=ProductListResponse)
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def get_products(
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skip: int = Query(0, ge=0),
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limit: int = Query(100, ge=1, le=1000),
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brand: Optional[str] = Query(None),
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category: Optional[str] = Query(None),
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availability: Optional[str] = Query(None),
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marketplace: Optional[str] = Query(None, description="Filter by marketplace"),
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shop_name: Optional[str] = Query(None, description="Filter by shop name"),
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search: Optional[str] = Query(None),
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db: Session = Depends(get_db),
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current_user: User = Depends(get_current_user)
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):
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"""Get products with advanced filtering including marketplace and shop (Protected)"""
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query = db.query(Product)
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# Apply filters
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if brand:
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query = query.filter(Product.brand.ilike(f"%{brand}%"))
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if category:
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query = query.filter(Product.google_product_category.ilike(f"%{category}%"))
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if availability:
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query = query.filter(Product.availability == availability)
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if marketplace:
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query = query.filter(Product.marketplace.ilike(f"%{marketplace}%"))
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if shop_name:
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query = query.filter(Product.shop_name.ilike(f"%{shop_name}%"))
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if search:
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# Search in title, description, and marketplace
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search_term = f"%{search}%"
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query = query.filter(
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(Product.title.ilike(search_term)) |
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(Product.description.ilike(search_term)) |
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(Product.marketplace.ilike(search_term)) |
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(Product.shop_name.ilike(search_term))
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)
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# Get total count for pagination
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total = query.count()
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# Apply pagination
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products = query.offset(skip).limit(limit).all()
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return ProductListResponse(
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products=products,
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total=total,
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skip=skip,
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limit=limit
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)
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@router.post("/products", response_model=ProductResponse)
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def create_product(
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product: ProductCreate,
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db: Session = Depends(get_db),
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current_user: User = Depends(get_current_user)
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):
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"""Create a new product with validation and marketplace support (Protected)"""
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# Check if product_id already exists
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existing = db.query(Product).filter(Product.product_id == product.product_id).first()
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if existing:
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raise HTTPException(status_code=400, detail="Product with this ID already exists")
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# Process and validate GTIN if provided
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if product.gtin:
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normalized_gtin = gtin_processor.normalize(product.gtin)
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if not normalized_gtin:
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raise HTTPException(status_code=400, detail="Invalid GTIN format")
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product.gtin = normalized_gtin
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# Process price if provided
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if product.price:
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parsed_price, currency = price_processor.parse_price_currency(product.price)
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if parsed_price:
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product.price = parsed_price
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product.currency = currency
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# Set default marketplace if not provided
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if not product.marketplace:
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product.marketplace = "Letzshop"
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db_product = Product(**product.dict())
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db.add(db_product)
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db.commit()
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db.refresh(db_product)
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logger.info(
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f"Created product {db_product.product_id} for marketplace {db_product.marketplace}, "
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f"shop {db_product.shop_name}")
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return db_product
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@router.get("/products/{product_id}", response_model=ProductDetailResponse)
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def get_product(product_id: str, db: Session = Depends(get_db), current_user: User = Depends(get_current_user)):
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"""Get product with stock information (Protected)"""
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product = db.query(Product).filter(Product.product_id == product_id).first()
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if not product:
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raise HTTPException(status_code=404, detail="Product not found")
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# Get stock information if GTIN exists
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stock_info = None
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if product.gtin:
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stock_entries = db.query(Stock).filter(Stock.gtin == product.gtin).all()
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if stock_entries:
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total_quantity = sum(entry.quantity for entry in stock_entries)
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locations = [
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StockLocationResponse(location=entry.location, quantity=entry.quantity)
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for entry in stock_entries
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]
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stock_info = StockSummaryResponse(
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gtin=product.gtin,
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total_quantity=total_quantity,
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locations=locations
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)
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return ProductDetailResponse(
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product=product,
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stock_info=stock_info
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)
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@router.put("/products/{product_id}", response_model=ProductResponse)
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def update_product(
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product_id: str,
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product_update: ProductUpdate,
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db: Session = Depends(get_db),
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current_user: User = Depends(get_current_user)
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):
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"""Update product with validation and marketplace support (Protected)"""
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product = db.query(Product).filter(Product.product_id == product_id).first()
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if not product:
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raise HTTPException(status_code=404, detail="Product not found")
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# Update fields
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update_data = product_update.dict(exclude_unset=True)
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# Validate GTIN if being updated
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if "gtin" in update_data and update_data["gtin"]:
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normalized_gtin = gtin_processor.normalize(update_data["gtin"])
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if not normalized_gtin:
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raise HTTPException(status_code=400, detail="Invalid GTIN format")
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update_data["gtin"] = normalized_gtin
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# Process price if being updated
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if "price" in update_data and update_data["price"]:
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parsed_price, currency = price_processor.parse_price_currency(update_data["price"])
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if parsed_price:
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update_data["price"] = parsed_price
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update_data["currency"] = currency
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for key, value in update_data.items():
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setattr(product, key, value)
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product.updated_at = datetime.utcnow()
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db.commit()
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db.refresh(product)
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return product
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@router.delete("/products/{product_id}")
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def delete_product(
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product_id: str,
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db: Session = Depends(get_db),
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current_user: User = Depends(get_current_user)
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):
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"""Delete product and associated stock (Protected)"""
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product = db.query(Product).filter(Product.product_id == product_id).first()
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if not product:
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raise HTTPException(status_code=404, detail="Product not found")
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# Delete associated stock entries if GTIN exists
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if product.gtin:
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db.query(Stock).filter(Stock.gtin == product.gtin).delete()
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db.delete(product)
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db.commit()
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return {"message": "Product and associated stock deleted successfully"}
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# Export with streaming for large datasets (Protected)
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@router.get("/export-csv")
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async def export_csv(
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marketplace: Optional[str] = Query(None, description="Filter by marketplace"),
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shop_name: Optional[str] = Query(None, description="Filter by shop name"),
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db: Session = Depends(get_db),
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current_user: User = Depends(get_current_user)
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):
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"""Export products as CSV with streaming and marketplace filtering (Protected)"""
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def generate_csv():
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# Stream CSV generation for memory efficiency
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yield "product_id,title,description,link,image_link,availability,price,currency,brand,gtin,marketplace,shop_name\n"
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batch_size = 1000
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offset = 0
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while True:
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query = db.query(Product)
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# Apply marketplace filters
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if marketplace:
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query = query.filter(Product.marketplace.ilike(f"%{marketplace}%"))
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if shop_name:
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query = query.filter(Product.shop_name.ilike(f"%{shop_name}%"))
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products = query.offset(offset).limit(batch_size).all()
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if not products:
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break
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for product in products:
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# Create CSV row with marketplace fields
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row = (f'"{product.product_id}","{product.title or ""}","{product.description or ""}",'
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f'"{product.link or ""}","{product.image_link or ""}","{product.availability or ""}",'
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f'"{product.price or ""}","{product.currency or ""}","{product.brand or ""}",'
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f'"{product.gtin or ""}","{product.marketplace or ""}","{product.shop_name or ""}"\n')
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yield row
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offset += batch_size
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filename = "products_export"
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if marketplace:
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filename += f"_{marketplace}"
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if shop_name:
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filename += f"_{shop_name}"
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filename += ".csv"
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return StreamingResponse(
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generate_csv(),
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media_type="text/csv",
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headers={"Content-Disposition": f"attachment; filename={filename}"}
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)
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