from fastapi import APIRouter, Depends, Query
from sqlalchemy.orm import Session
from app.models.point_product import (
    PointProductDB, 
    PointProductCreate, 
    PointProductUpdate,
    PointProductInfo
)
from app.models.database import get_db
from app.api.deps import get_admin_user
from app.models.user import UserDB
from app.core.response import success_response, error_response, ResponseModel
from typing import Optional

router = APIRouter()

@router.post("", response_model=ResponseModel)
async def create_point_product(
    product: PointProductCreate,
    db: Session = Depends(get_db),
    admin: UserDB = Depends(get_admin_user)
):
    """创建积分商品（管理员）"""
    db_product = PointProductDB(**product.model_dump())
    db.add(db_product)
    
    try:
        db.commit()
        db.refresh(db_product)
        return success_response(data=PointProductInfo.model_validate(db_product))
    except Exception as e:
        db.rollback()
        return error_response(code=500, message=f"创建失败: {str(e)}")

@router.get("", response_model=ResponseModel)
async def get_point_products(
    is_active: Optional[bool] = None,
    skip: int = Query(0, ge=0),
    limit: int = Query(20, ge=1, le=100),
    db: Session = Depends(get_db)
):
    """获取积分商品列表"""
    query = db.query(PointProductDB)
    
    if is_active is not None:
        query = query.filter(PointProductDB.is_active == is_active)
    
    total = query.count()
    
    products = query.order_by(PointProductDB.create_time.desc())\
        .offset(skip)\
        .limit(limit)\
        .all()
    
    return success_response(data={
        "total": total,
        "items": [PointProductInfo.model_validate(p) for p in products]
    })

@router.get("/{product_id}", response_model=ResponseModel)
async def get_point_product(
    product_id: int,
    db: Session = Depends(get_db)
):
    """获取积分商品详情"""
    product = db.query(PointProductDB).filter(
        PointProductDB.id == product_id
    ).first()
    
    if not product:
        return error_response(code=404, message="商品不存在")
    
    return success_response(data=PointProductInfo.model_validate(product))

@router.put("/{product_id}", response_model=ResponseModel)
async def update_point_product(
    product_id: int,
    product: PointProductUpdate,
    db: Session = Depends(get_db),
    admin: UserDB = Depends(get_admin_user)
):
    """更新积分商品（管理员）"""
    db_product = db.query(PointProductDB).filter(
        PointProductDB.id == product_id
    ).first()
    
    if not db_product:
        return error_response(code=404, message="商品不存在")
    
    update_data = product.model_dump(exclude_unset=True)
    for key, value in update_data.items():
        setattr(db_product, key, value)
    
    try:
        db.commit()
        db.refresh(db_product)
        return success_response(data=PointProductInfo.model_validate(db_product))
    except Exception as e:
        db.rollback()
        return error_response(code=500, message=f"更新失败: {str(e)}")