from typing import Dict
import json

from fastapi import APIRouter, Depends, HTTPException
from fastapi.security import OAuth2PasswordBearer
from passlib.context import CryptContext
from sqlalchemy.orm import Session

from app.api import Response
from app.config.config import settings
from app.models.base_model import get_db
from app.models.token_model import upsert_token
from app.models.user import User, UserCreate, LoginData
from app.models.user_model import UserModel
from app.service.auth import authenticate_user, create_access_token
from app.service.bisheng import BishengService
from app.service.ragflow import RagflowService

router = APIRouter()

pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
oauth2_scheme = OAuth2PasswordBearer(tokenUrl="token")


@router.post("/register", response_model=Response)
async def register(user: UserCreate, db=Depends(get_db)):
    db_user = db.query(UserModel).filter(UserModel.username == user.username).first()
    if db_user:
        return Response(code=200, msg="Username already registered")

    bisheng_service = BishengService(settings.bisheng_base_url)
    ragflow_service = RagflowService(settings.ragflow_base_url)

    # 注册到毕昇
    try:
        await bisheng_service.register(user.username, user.password)
    except Exception as e:
        return Response(code=500, msg=f"Failed to register with Bisheng: {str(e)}")

    # 注册到ragflow
    try:
        await ragflow_service.register(user.username, user.password)
    except Exception as e:
        return Response(code=500, msg=f"Failed to register with Ragflow: {str(e)}")

    # 存储用户信息
    hashed_password = pwd_context.hash(user.password)
    db_user = UserModel(username=user.username, hashed_password=hashed_password)
    db.add(db_user)
    db.commit()
    db.refresh(db_user)
    return Response(code=200, msg="User registered successfully",data={"username": db_user.username})


@router.post("/login", response_model=Response)
async def login(login_data: LoginData, db: Session = Depends(get_db)):
    user = authenticate_user(db, login_data.username, login_data.password)
    if not user:
        return Response(code=400, msg="Incorrect username or password")

    bisheng_service = BishengService(settings.bisheng_base_url)
    ragflow_service = RagflowService(settings.ragflow_base_url)

    # 登录到毕昇
    try:
        bisheng_token = await bisheng_service.login(login_data.username, login_data.password)
    except Exception as e:
        return Response(code=500, msg=f"Failed to login with Bisheng: {str(e)}")

    # 登录到ragflow
    try:
        ragflow_token = await ragflow_service.login(login_data.username, login_data.password)
    except Exception as e:
        return Response(code=500, msg=f"Failed to login with Ragflow: {str(e)}")

    # 创建本地token
    access_token = create_access_token(data={"sub": user.username})

    upsert_token(db, user.id, access_token, bisheng_token, ragflow_token)

    return Response(code=200, msg="Login successful", data={
        "access_token": access_token,
        "token_type": "bearer"
    })