app/models/recurring_todos/weekly_recurrence_pattern.rb
module RecurringTodos
class WeeklyRecurrencePattern < AbstractRecurrencePattern
def initialize(user)
super user
end
def every_x_week
get :every_other1
end
{ monday: 1, tuesday: 2, wednesday: 3, thursday: 4, friday: 5, saturday: 6, sunday: 0 }.each do |day, number|
define_method("on_#{day}") do
on_xday number
end
end
def on_xday(n)
get(:every_day) && get(:every_day)[n, 1] != ' '
end
def recurrence_pattern
if every_x_week > 1
I18n.t("todos.recurrence.pattern.every_n", :n => every_x_week) + " " + I18n.t("common.weeks")
else
I18n.t('todos.recurrence.pattern.weekly')
end
end
def validate
super
validate_not_blank(every_x_week, "Every other nth week may not be empty for weekly recurrence setting")
something_set = %w{ sunday monday tuesday wednesday thursday friday saturday }.inject(false) { |set, day| set || send("on_#{day}") }
errors.add(:base, "You must specify at least one day on which the todo recurs") unless something_set
end
def get_next_date(previous)
start = determine_start_date(previous)
day = find_first_day_in_this_week(start)
return day unless day == -1
# we did not find anything this week, so check the nth next, starting from
# sunday
start = start + every_x_week.week - (start.wday).days
start = find_first_day_in_this_week(start)
return start unless start == -1
raise Exception.new, "unable to find next weekly date (#{every_day})"
end
private
def determine_start_date(previous)
if previous.nil?
return start_from || Time.zone.now
else
start = previous + 1.day
if start.wday == 0
# we went to a new week, go to the nth next week and find first match
# that week. Note that we already went into the next week, so -1
start += (every_x_week - 1).week
end
unless start_from.nil?
# check if the start_from date is later than previous. If so, use
# start_from as start to search for next date
start = start_from if start_from > previous
end
return start
end
end
def find_first_day_in_this_week(start)
# check if there are any days left this week for the next todo
start.wday.upto 6 do |i|
return start + (i - start.wday).days if on_xday(i)
end
-1
end
end
end