class SameNthWeekdayFromBeginningInMonthBase(SameNthWeekdayInMonthBase):
"""Base class
For recurrings on the same day nth weekday in month counting from the
beginning of the month.
"""
grok.baseclass()
n_mapping = {
0: _('1st'),
1: _('2nd'),
2: _('3rd'),
3: _('4th'),
4: _('5th')
}
@zope.cachedescriptors.property.Lazy
def n(self):
return int(math.ceil(self.context.day / 7.0)) - 1
@property
def info(self):
return _(self.message_id,
mapping={
'recurrence': self.n_mapping[self.n],
'weekday': self._weekday
})
class SameNthWeekdayFromEndInMonthBase(SameNthWeekdayInMonthBase):
"""Base class for recurrings on the same day nth weekday in month ...
... counting from the end of the month.
"""
grok.baseclass()
n_mapping = {
1: _('last'),
2: _('last but one'),
3: _('last but two'),
4: _('last but three'),
5: _('last but four')
}
@zope.cachedescriptors.property.Lazy
def n_from_end(self):
last_of_month = gocept.month.IMonth(self.context).lastOfMonth()
return int(
math.ceil((last_of_month.day - (self.context.day - 1)) / 7.0))
@property
def n(self):
return recurrences_of_weekday_in_month(
self.context, self.current_month) - self.n_from_end
@property
def info(self):
return _(self.message_id,
mapping={
'recurrence': self.n_mapping[self.n_from_end],
'weekday': self._weekday
})
class MonthlyNthWeekday(SameNthWeekdayFromBeginningInMonthBase):
"""Recurring monthly on same recurrence of the weekday in the month as ...
... in `self.context`.
"""
grok.name('nth weekday of month')
weight = 20
title = _('monthly, same weekday (e. g. each 3rd Sunday)')
month_interval = 1
message_id = _('${recurrence} ${weekday} every month')
class Daily(StaticIntervalBase):
"""Recurring each day."""
grok.name('daily')
weight = 5
interval = ONE_DAY
title = _('daily')
info = _('each day')
def _get_start_date(self):
return self.interval_start
class BiMonthlyNthWeekday(SameNthWeekdayFromBeginningInMonthBase):
"""Recurring monthly on same recurrence of the weekday in the month as ...
... in `self.context` but only every other month.
"""
grok.name('nth weekday every other month')
weight = 25
title = _('every other month, same weekday '
'(e. g. each 3rd Sunday in other month)')
month_interval = 2
message_id = _('${recurrence} ${weekday} every other month')
class BiMonthlyNthWeekdayFromEnd(SameNthWeekdayFromEndInMonthBase):
"""Recurring monthly on same recurrence of the weekday in the month as ...
... in `self.context` but only each other month.
"""
grok.name('nth weekday from end of other month')
weight = 26
title = _('every other month on same weekday counted from the end of the '
'month (e. g. each last but one Sunday every other month)')
month_interval = 2
message_id = _('${recurrence} ${weekday} every other month')
class MonthlyNthWeekdayFromEnd(SameNthWeekdayFromEndInMonthBase):
"""Recurring monthly on same recurrence of the weekday in the month as ...
... in `self.context`.
"""
grok.name('nth weekday from end of month')
weight = 21
title = _('monthly, same weekday counted from the end of the month '
'(e. g. each last but one Sunday)')
month_interval = 1
message_id = _('${recurrence} ${weekday} every month')
class BiWeekly(SameWeekdayBase):
"""Recurring biweekly on the same weekday."""
grok.name('biweekly')
weight = 11
title = _('every other week, same weekday (e. g. each second Friday)')
interval = TWO_WEEKS
def _get_start_date(self):
candiate = next_date_of_same_weekday(self.context, self.interval_start)
# We have to compare the naive datetimes as otherwise the DST
# difference might be computed into the difference of the two dates:
naive_candiate = self.combine_with_time_of_context(
candiate).replace(tzinfo=None)
naive_context = self.context.replace(tzinfo=None)
interval = (naive_candiate - naive_context).days
assert interval % 7 == 0, \
'Interval has {} days. This is {} weeks and {} days!'.format(
interval, interval / 7, interval % 7)
if interval % 14 != 0:
# odd number of weeks
candiate = next_date_of_same_weekday(
self.context, self.interval_start + ONE_WEEK)
return candiate
@property
def info(self):
return _('${weekday} every other week',
mapping={'weekday': self._weekday})
class Yearly(RecurringDateTime):
"""Recurring on the same date each year."""
grok.name('yearly')
weight = 100
title = _('yearly (e. g. 24th of December)')
def compute(self):
if self.context > self.interval_end:
return # no need to compute: there will be no results
date = self.context
index = 0
# Find first date after interval_start:
while date < self.interval_start:
index += 1
date = add_years(self.context, index)
# Yield dates in the interval:
while date < self.interval_end:
yield date
index += 1
date = add_years(self.context, index)
@property
def info(self):
return _('${date} every year',
mapping={'date': self.context.strftime('%d.%m.')})
class Weekly(SameWeekdayBase):
"""Recurring weekly on the same weekday."""
grok.name('weekly')
weight = 10
title = _('weekly, same weekday (e. g. each Friday)')
interval = ONE_WEEK
@property
def info(self):
return _('${weekday} every week',
mapping={'weekday': self._weekday})
def info(self):
return _(self.message_id,
mapping={
'recurrence': self.n_mapping[self.n],
'weekday': self._weekday
})
def info(self):
return _('${weekday} every other week',
mapping={'weekday': self._weekday})
def info(self):
return _('${date} every year',
mapping={'date': self.context.strftime('%d.%m.')})
