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.security import create_access_token, verify_password
from app.db.session import get_db
from app.models.user import User
from app.schemas.token import Token
from app.api.deps import get_current_user

router = APIRouter()


@router.post("/login", response_model=Token)
async 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.
    """
    # Try to authenticate the user
    user = db.query(User).filter(User.email == form_data.username).first()

    if not user:
        raise HTTPException(
            status_code=status.HTTP_401_UNAUTHORIZED,
            detail="Incorrect email or password",
        )

    if not verify_password(form_data.password, user.hashed_password):
        raise HTTPException(
            status_code=status.HTTP_401_UNAUTHORIZED,
            detail="Incorrect email or password",
        )

    if not user.is_active:
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST, detail="Inactive user"
        )

    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",
    }


@router.post("/test-token", response_model=dict)
async def test_token(current_user: User = Depends(get_current_user)) -> Any:
    """
    Test access token endpoint.
    """
    return {"msg": "Token is valid", "user_id": current_user.id}