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 = 'cy2020-end-year-match'
# FIXME: Move this information into the model.
FUNDGOAL_ENDTIMES = {
    # Noon UTC = the end of the previous day anywhere on Earth (AOE)
    'cy2018-end-year-match': DateTime(2019, 1, 16, 12, tzinfo=UTC),
    'cy2019-end-year-match': DateTime(2020, 1, 16, 12, tzinfo=UTC),
    'cy2020-end-year-match': DateTime(2021, 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 {
        'datetime_now': DateTime.now(UTC),
        'sitefundgoal': fundgoal_lookup(SITE_FUNDGOAL),
        'sitefundgoal_endtime': FUNDGOAL_ENDTIMES[SITE_FUNDGOAL],
    }

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('/')}