"""Methods for app lifecycle (before/after request, ...)"""

from flask import g, session

from app.models import User


def authenticate():
    """read session to authenticate user. Stores user object in flask.g
    
    For use in before_request
    """
    g.user = None
    if session.get('auth') is not None:
        user = User.query.get(session['auth'])
        g.user = user