def _cycle_end_date(self,
reference_date=None,
ignore_trial=None,
granulate=None):
ignore_trial_default = False
granulate_default = False
ignore_trial = ignore_trial or ignore_trial_default
granulate = granulate or granulate_default
if reference_date is None:
reference_date = timezone.now().date()
real_cycle_start_date = self._cycle_start_date(reference_date,
ignore_trial, granulate)
# we need a current start date in order to compute a current end date
if not real_cycle_start_date:
return None
# during trial and trial cycle is not separated into intervals
if self.on_trial(reference_date) and not (
self.separate_cycles_during_trial or granulate):
return min(self.trial_end, (self.ended_at or datetime.max.date()))
if self.plan.interval == self.plan.INTERVALS.YEAR:
relative_delta = {'years': self.plan.interval_count}
elif self.plan.interval == self.plan.INTERVALS.MONTH:
relative_delta = {'months': self.plan.interval_count}
elif self.plan.interval == self.plan.INTERVALS.WEEK:
relative_delta = {'weeks': self.plan.interval_count}
else: # plan.INTERVALS.DAY
relative_delta = {'days': self.plan.interval_count}
maximum_cycle_end_date = real_cycle_start_date + relativedelta(
**relative_delta) - ONE_DAY
# We know that the cycle end_date is the day before the next cycle start_date,
# therefore we check if the cycle start_date for our maximum cycle end_date is the same
# as the initial cycle start_date.
while True:
reference_cycle_start_date = self._cycle_start_date(
maximum_cycle_end_date, ignore_trial, granulate)
# it means the cycle end_date we got is the right one
if reference_cycle_start_date == real_cycle_start_date:
return min(maximum_cycle_end_date,
(self.ended_at or datetime.max.date()))
elif reference_cycle_start_date < real_cycle_start_date:
# This should never happen in normal conditions, but it may stop infinite looping
return None
maximum_cycle_end_date = reference_cycle_start_date - ONE_DAY
def _cycle_end_date(self, reference_date=None, ignore_trial=None, granulate=None):
ignore_trial_default = False
granulate_default = False
ignore_trial = ignore_trial or ignore_trial_default
granulate = granulate or granulate_default
if reference_date is None:
reference_date = timezone.now().date()
real_cycle_start_date = self._cycle_start_date(reference_date, ignore_trial, granulate)
# we need a current start date in order to compute a current end date
if not real_cycle_start_date:
return None
# during trial and trial cycle is not separated into intervals
if self.on_trial(reference_date) and not (self.separate_cycles_during_trial or
granulate):
return min(self.trial_end, (self.ended_at or datetime.max.date()))
if self.plan.interval == self.plan.INTERVALS.YEAR:
relative_delta = {'years': self.plan.interval_count}
elif self.plan.interval == self.plan.INTERVALS.MONTH:
relative_delta = {'months': self.plan.interval_count}
elif self.plan.interval == self.plan.INTERVALS.WEEK:
relative_delta = {'weeks': self.plan.interval_count}
else: # plan.INTERVALS.DAY
relative_delta = {'days': self.plan.interval_count}
maximum_cycle_end_date = real_cycle_start_date + relativedelta(**relative_delta) - ONE_DAY
# We know that the cycle end_date is the day before the next cycle start_date,
# therefore we check if the cycle start_date for our maximum cycle end_date is the same
# as the initial cycle start_date.
while True:
reference_cycle_start_date = self._cycle_start_date(maximum_cycle_end_date,
ignore_trial, granulate)
# it means the cycle end_date we got is the right one
if reference_cycle_start_date == real_cycle_start_date:
return min(maximum_cycle_end_date, (self.ended_at or datetime.max.date()))
elif reference_cycle_start_date < real_cycle_start_date:
# This should never happen in normal conditions, but it may stop infinite looping
return None
maximum_cycle_end_date = reference_cycle_start_date - ONE_DAY
def test_relative_delta(self):
# TODO: this
from silver.utils.dates import relativedelta, ONE_DAY
from dateutil.rrule import rrule, MONTHLY
from datetime import datetime, timedelta
from calendar import monthrange
# Billing by the last day of each month, with a start date that
# includes all possible months. (Same basic result)
# Set up the timescale.
cycle_start_dates = dt.date(2018, 1, 29)
# These are each month on the same day.
# [datetime.datetime(), ...]
intervals = list(
rrule(MONTHLY, count=12, bymonthday=-1, dtstart=cycle_start_dates))
relative_delta = relativedelta(months=1)
for interval in intervals:
end_date = interval + relative_delta - ONE_DAY