import json
from flask import session
import sanitize


def collect_tokens(cfg):
    blank = [{'value': '', 'label': '-- Select timezone --'}]
    return {
        'PREF_EMAIL':       session.get('email_address', ''),
        'PREF_TIMEZONE':    session.get('timezone', ''),
        'TIMEZONE_OPTIONS': json.dumps(blank + [{'value': tz, 'label': tz} for tz in sanitize.VALID_TIMEZONES]),
    }