app/models/recurring_todos/monthly_recurrence_pattern.rb
module RecurringTodos
class MonthlyRecurrencePattern < AbstractRecurrencePattern
def initialize(user)
super user
end
def recurrence_selector
get :recurrence_selector
end
def every_x_day?
get(:recurrence_selector) == 0
end
def every_x_day
get(:every_other1)
end
def every_xth_day?
get(:recurrence_selector) == 1
end
def every_x_month
# in case monthly pattern is every day x, return every_other2 otherwise
# return a default value
get(:recurrence_selector) == 0 ? get(:every_other2) : 1
end
def every_x_month2
# in case monthly pattern is every xth day, return every_other2 otherwise
# return a default value
get(:recurrence_selector) == 1 ? get(:every_other2) : 1
end
def every_xth_day(default = nil)
get(:every_other3) || default
end
def day_of_week
get :every_count
end
def recurrence_pattern
if recurrence_selector == 0
recurrence_pattern_for_specific_day
else
recurrence_pattern_for_relative_day_in_month
end
end
def validate
super
case recurrence_selector
when 0 # 'monthly_every_x_day'
validate_not_blank(every_x_month, "Every other nth month may not be empty for recurrence setting")
when 1 # 'monthly_every_xth_day'
validate_not_blank(every_x_month2, "Every other nth month may not be empty for recurrence setting")
validate_not_blank(day_of_week, "The day of the month may not be empty for recurrence setting")
else
raise Exception.new, "unexpected value of recurrence selector '#{recurrence_selector}'"
end
end
def get_next_date(previous)
start = determine_start(previous)
n = get(:every_other2)
case recurrence_selector
when 0 # specific day of the month
return find_specific_day_of_month(previous, start, n)
when 1 # relative weekday of a month
return find_relative_day_of_month(start, n)
end
nil
end
private
def find_specific_day_of_month(previous, start, n)
if (previous && start.mday >= every_x_day) || (previous.nil? && start.mday > every_x_day)
# there is no next day n in this month, search in next month
start += n.months
end
start.in_time_zone.change(day: every_x_day)
end
def find_relative_day_of_month(start, n)
the_next = get_xth_day_of_month(every_xth_day, day_of_week, start.month, start.year)
if the_next.nil? || the_next <= start
# the nth day is already passed in this month, go to next month and try
# again
the_next += n.months
# TODO: if there is still no match, start will be set to nil. if we ever
# support 5th day of the month, we need to handle this case
the_next = get_xth_day_of_month(every_xth_day, day_of_week, the_next.month, the_next.year)
end
the_next
end
def recurrence_pattern_for_specific_day
on_day = " #{I18n.t('todos.recurrence.pattern.on_day_n', :n => every_x_day)}"
if every_x_month > 1
I18n.t("todos.recurrence.pattern.every_n_months", :n => every_x_month) + on_day
else
I18n.t("todos.recurrence.pattern.every_month") + on_day
end
end
def recurrence_pattern_for_relative_day_in_month
n_months = if every_x_month2 > 1
"#{every_x_month2} #{I18n.t('common.months')}"
else
I18n.t('common.month')
end
I18n.t('todos.recurrence.pattern.every_xth_day_of_every_n_months',
x: xth(every_xth_day),
day: day_of_week_as_text(day_of_week),
n_months: n_months)
end
end
end