from fastapi import APIRouter, HTTPException, Depends
from typing import List
from sqlalchemy.orm import Session

from app.schemas.product import ProductResponse, ProductCreate, ProductUpdate
from app.services.product_service import product_service
from app.database.connection import get_db

router = APIRouter()

@router.get("/", response_model=List[ProductResponse])
async def get_products(db: Session = Depends(get_db)):
    """获取所有商品列表"""
    products = product_service.get_all_products(db)
    return products

@router.get("/{product_id}", response_model=ProductResponse)
async def get_product(product_id: int, db: Session = Depends(get_db)):
    """根据ID获取单个商品"""
    product = product_service.get_product_by_id(db, product_id)
    if not product:
        raise HTTPException(status_code=404, detail="Product not found")
    return product

@router.post("/", response_model=ProductResponse, status_code=201)
async def create_product(product: ProductCreate, db: Session = Depends(get_db)):
    """创建新产品"""
    return product_service.create_product(db, product)

@router.put("/{product_id}", response_model=ProductResponse)
async def update_product(product_id: int, product: ProductUpdate, db: Session = Depends(get_db)):
    """更新产品信息"""
    updated_product = product_service.update_product(db, product_id, product)
    if not updated_product:
        raise HTTPException(status_code=404, detail="Product not found")
    return updated_product

@router.delete("/{product_id}", status_code=204)
async def delete_product(product_id: int, db: Session = Depends(get_db)):
    """删除产品"""
    deleted = product_service.delete_product(db, product_id)
    if not deleted:
        raise HTTPException(status_code=404, detail="Product not found")