def get_num_missed_windows(case):
"""
Get the number of reminder events that were missed on registration day.
"""
domain_obj = Domain.get_by_name(case.domain, strict=True)
# unlike in most other projects, case.opened_on is actually in UTC
# because it was submitted from cloudcare
opened_timestamp = PhoneTime(case.opened_on, pytz.UTC).user_time(domain_obj.get_default_timezone()).done()
day_of_week = opened_timestamp.weekday()
time_of_day = opened_timestamp.time()
# In order to use timedelta, we need a datetime
current_time = datetime.combine(date(2000, 1, 1), time_of_day)
window_time = datetime.combine(date(2000, 1, 1), WINDOWS[day_of_week][0])
if current_time < window_time:
return 0
window_interval = (WINDOWS[day_of_week][1] - 60) / 5
for i in range(1, 5):
window_time += timedelta(minutes=window_interval)
if current_time < window_time:
return i
return 5
