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

from app.schemas.user import UserResponse, UserCreate, UserUpdate
from app.services.user_service import user_service
from app.database.connection import get_db

router = APIRouter()

@router.get("/", response_model=List[UserResponse])
async def get_users(db: Session = Depends(get_db)):
    """获取所有用户列表"""
    users = user_service.get_all_users(db)
    return users

@router.get("/{user_id}", response_model=UserResponse)
async def get_user(user_id: int, db: Session = Depends(get_db)):
    """根据ID获取单个用户"""
    user = user_service.get_user_by_id(db, user_id)
    if not user:
        raise HTTPException(status_code=404, detail="User not found")
    return user

@router.post("/", response_model=UserResponse, status_code=201)
async def create_user(user: UserCreate, db: Session = Depends(get_db)):
    """创建新用户"""
    return user_service.create_user(db, user)

@router.put("/{user_id}", response_model=UserResponse)
async def update_user(user_id: int, user: UserUpdate, db: Session = Depends(get_db)):
    """更新用户信息"""
    updated_user = user_service.update_user(db, user_id, user)
    if not updated_user:
        raise HTTPException(status_code=404, detail="User not found")
    return updated_user

@router.delete("/{user_id}", status_code=204)
async def delete_user(user_id: int, db: Session = Depends(get_db)):
    """删除用户"""
    deleted = user_service.delete_user(db, user_id)
    if not deleted:
        raise HTTPException(status_code=404, detail="User not found")