from datetime import datetime, timedelta

from typing import Annotated
from fastapi import Depends, FastAPI, HTTPException, status, APIRouter
from fastapi.security import OAuth2PasswordBearer, OAuth2PasswordRequestForm
from ..dependencies import users_active
from ..models import token

router = APIRouter()
ACCESS_TOKEN_EXPIRE_MINUTES = 30

@router.post("/token", response_model=token.Token, tags=["token"])
async def login_for_access_token(
    form_data: Annotated[OAuth2PasswordRequestForm, Depends()]
):
    user = users_active.authenticate_user(users_active.fake_users, 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=ACCESS_TOKEN_EXPIRE_MINUTES)
    access_token = users_active.create_access_token(
        data={"sub": user.username}, expires_delta=access_token_expires
    )
    return {"access_token": access_token, "token_type": "bearer"}