authenticate api

authenticate_api.py

@app.post("/authenticate", response_model=schemas.Token)
def authenticate_user(user: schemas.UserAuthenticate, db: Session = Depends(get_db)):
    db_user = crud.get_user_by_username(db, username=user.username)
    if db_user is None:
        raise HTTPException(status_code=400, detail="Username not existed")
    else:
        is_password_correct = crud.check_username_password(db, user)
        if is_password_correct is False:
            raise HTTPException(status_code=400, detail="Password is not correct")
        else:
            from datetime import timedelta
            access_token_expires = timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
            from sql_app.app_utils import create_access_token
            access_token = create_access_token(
                data={"sub": user.username}, expires_delta=access_token_expires)
            return {"access_token": access_token, "token_type": "Bearer"}