from datetime import timedelta

from fastapi import APIRouter, Depends, HTTPException, status
from sqlalchemy.orm import Session
from typing import Annotated
from apps.users.services import authenticate_user, fake_users_db, create_access_token, get_current_active_user
from fastapi.security import OAuth2PasswordRequestForm

from apps.users import crud, models, schemas
from middleware.db_connection import get_db

from apps.users.schemas import User, UserCreate, Token
from settings import config

router = APIRouter(prefix="/users", tags=["users"])


@router.post("/token", response_model=Token)
async def login_for_access_token(form_data: Annotated[OAuth2PasswordRequestForm, Depends()], db: Session = Depends(get_db)):
    user = authenticate_user(db, form_data.username, form_data.password)
    if not user:
        raise HTTPException(
            status_code=status.HTTP_401_UNAUTHORIZED,
            detail="Incorrect username or password",
            headers={"WWW-Authenticate": "Bearer"},
        )
    access_token_expires = timedelta(minutes=config.ACCESS_TOKEN_EXPIRE_MINUTES)
    access_token = create_access_token(data={"sub": user.email}, expires_delta=access_token_expires)
    return Token(access_token=access_token, token_type="bearer")


@router.get("/list", response_model=list[User])
async def list_users(db: Session = Depends(get_db)):
    db_users = crud.get_users(db)
    return db_users


@router.get("/me", response_model=User)
async def read_users_me(current_user: Annotated[User, Depends(get_current_active_user)]):
    return current_user


@router.post("/", response_model=User)
def create_user(user: UserCreate, db: Session = Depends(get_db)):
    db_user = crud.get_user_by_email(db, email=user.email)
    if db_user:
        raise HTTPException(status_code=400, detail="Email already registered")
    return crud.create_user(db=db, user=user)