website/www/conservancy/local_context_processors.py

from datetime import datetime as DateTime
from pytz import utc as UTC

import conservancy.settings
from conservancy.apps.fundgoal.models import FundraisingGoal as FundraisingGoal

SITE_FUNDGOAL = 'cy2018-end-year-match'
# FIXME: Move this information into the model.
FUNDGOAL_ENDTIMES = {
    # End of 2019-01-15 AOE is 2019-01-16 noon UTC.
    'cy2018-end-year-match': DateTime(2019, 1, 16, 12, tzinfo=UTC),
}

def fundgoal_lookup(fundraiser_sought):
    try:
        return FundraisingGoal.objects.get(fundraiser_code_name=fundraiser_sought)
    except FundraisingGoal.DoesNotExist:
        # we have no object!  do something
        return None

def sitefundraiser(request):
    return {
        'sitefundgoal': fundgoal_lookup(SITE_FUNDGOAL),
        'sitefundgoal_timeleft': FUNDGOAL_ENDTIMES[SITE_FUNDGOAL] - DateTime.now(UTC),
    }

if conservancy.settings.FORCE_CANONICAL_HOSTNAME:
    _HOST_URL_VAR = {'host_url': 'https://' + conservancy.settings.FORCE_CANONICAL_HOSTNAME}
    def host_url(request):
        return _HOST_URL_VAR
else:
    def host_url(request):
        return {'host_url': request.build_absolute_uri('/').rstrip('/')}