from fastapi import FastAPI, Depends, HTTPException, Request
from database import engine, SessionLocal
from models import User
from sqlalchemy.orm import Session
import uvicorn
from models import User


app = FastAPI()

# 创建所有表
User.metadata.create_all(bind=engine)

# 依赖注入：获取数据库会话
def get_db():
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()


@app.post("/login")
async def login(request: Request, db: Session = Depends(get_db)):
    user_data =await request.json()
    print(user_data)
    user=db.query(User).filter(User.username==user_data['username']).first()
    if user:
        if user.password==user_data['password']:
            return {"code":200,"msg":"登录成功"}
        else:
            return {"code":400,"msg":"密码错误"}
    return {"code":501,"msg":"账号不存在"}

@app.post("/register")
async def register(request: Request, db: Session = Depends(get_db)):
    user_data =await request.json()
    users=db.query(User).filter(User.username==user_data['username']).first()
    if users:
        return {"code":501,"msg":"账号已存在"}
    else:
        new_user=User(username=user_data['username'],password=user_data['password'])
        db.add(new_user)
        db.commit()
        db.refresh(new_user)
        print(new_user)
        return {"code":200,"msg":"注册成功"}










from fastapi.middleware.cors import CORSMiddleware
 
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

if __name__ == '__main__':
    # 运行fastapi程序
    uvicorn.run(app="main:app", host="127.0.0.1", port=8000, reload=True)