from flask_sqlalchemy import SQLAlchemy
from flask_login import LoginManager

db = SQLAlchemy()
login_manager = LoginManager()
login_manager.login_view = "auth.login"
login_manager.login_message_category = "warning"


@login_manager.user_loader
def load_user(user_id):
    from app.models.user import User
    try:
        return db.session.get(User, int(user_id))
    except (TypeError, ValueError):
        return None