from datetime import timedelta
from typing import Any

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

from app import crud, schemas
from app.api.api_v1 import deps
from app.core import security
from app.core.config import settings

router = APIRouter()


@router.post("/login", response_model=schemas.Token)
async def login_access_token(
    db: Session = Depends(deps.get_db), form_data: OAuth2PasswordRequestForm = Depends()
) -> Any:
    """
    OAuth2 compatible token login, get an access token for future requests
    """
    user = crud.user.authenticate(
        db, email=form_data.username, password=form_data.password
    )
    if not user:
        raise HTTPException(status_code=400, detail="Incorrect email or password")
    elif not crud.user.is_active(user):
        raise HTTPException(status_code=400, detail="Inactive user")
    access_token_expires = timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES)
    return {
        "access_token": security.create_access_token(
            user.id, expires_delta=access_token_expires
        ),
        "token_type": "bearer",
    }


@router.post("/register", response_model=schemas.User)
async def register_user(
    *,
    db: Session = Depends(deps.get_db),
    user_in: schemas.UserCreate,
) -> Any:
    """
    Register a new user
    """
    user = crud.user.get_by_email(db, email=user_in.email)
    if user:
        raise HTTPException(
            status_code=400,
            detail="A user with this email already exists",
        )
    user = crud.user.create(db, obj_in=user_in)
    return user