from datetime import timedelta
from fastapi import APIRouter, Depends, HTTPException, status
from fastapi.security import OAuth2PasswordRequestForm
from sqlalchemy.orm import Session
from app.api.deps import get_db
from app.core.config import settings
from app.core.security import create_access_token
from app.crud.crud_user import user as crud_user
from app.schemas.ppr import Token

router = APIRouter()


@router.post("/login", response_model=Token)
async def login_for_access_token(
    db: Session = Depends(get_db),
    form_data: OAuth2PasswordRequestForm = Depends()
):
    """OAuth2 compatible token login, get an access token for future requests"""
    user = crud_user.authenticate(
        db, username=form_data.username, password=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=settings.access_token_expire_minutes)
    access_token = create_access_token(
        subject=user.username, expires_delta=access_token_expires
    )
    
    return {"access_token": access_token, "token_type": "bearer"}


@router.post("/test-token")
async def test_token(current_user = Depends(get_db)):
    """Test access token"""
    return current_user