from datetime import timedelta
from typing import Any

from fastapi import APIRouter, Depends, HTTPException, status
from fastapi.security import OAuth2PasswordRequestForm
from sqlalchemy.orm import Session

from app.core.config import settings
from app.core.deps import authenticate_user, get_db
from app.core.security import create_access_token
from app.schemas.token import Token

router = APIRouter()


@router.post("/login", response_model=Token)
def login_access_token(
    db: Session = Depends(get_db),
    form_data: OAuth2PasswordRequestForm = Depends()
) -> Any:
    """
    OAuth2 compatible token login, get an access token for future requests
    """
    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"},
        )

    # Create access token
    access_token_expires = timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES)

    return {
        "access_token": create_access_token(
            user.id, expires_delta=access_token_expires
        ),
        "token_type": "bearer",
    }