lib/calendar_subscriptions.rb
# Copyright (C) 2012-2024 Zammad Foundation, https://zammad-foundation.org/
require 'icalendar/tzinfo'
class CalendarSubscriptions
def initialize(user)
@user = user
@time_zone = Setting.get('timezone_default')
@preferences = Service::User::CalendarSubscription::Preferences.new(@user).execute
end
def all
to_ical @preferences
.keys
.map { |object_name| generic_call(object_name) }
.flatten
end
def generic(object_name, method_name = 'all')
to_ical generic_call(object_name, method_name)
end
def generic_call(object_name, method_name = 'all')
return [] if @preferences[ object_name ].blank?
sub_class_name = object_name.to_s.capitalize
object = "CalendarSubscriptions::#{sub_class_name}".constantize
instance = object.new(@user, @preferences[ object_name ], @time_zone)
raise Exceptions::UnprocessableEntity, __('An unknown method name was requested.') if object::ALLOWED_METHODS.exclude?(method_name)
instance.send(method_name)
end
def to_ical(events_data)
cal = Icalendar::Calendar.new
tz = ActiveSupport::TimeZone.find_tzinfo(@time_zone)
# https://github.com/zammad/zammad/issues/3989
# https://datatracker.ietf.org/doc/html/rfc5545#section-3.2.19
if events_data.any?
cal.add_timezone tz.ical_timezone(DateTime.parse(events_data.first[:dtstart].to_s))
end
events_data.each do |event_data|
cal.event do |e|
dtstart = DateTime.parse(event_data[:dtstart].to_s)
dtend = DateTime.parse(event_data[:dtend].to_s)
# by design all new/open ticket events are scheduled at midnight:
# skip adding TZ offset
if event_data[:type] != 'new_open'
dtstart = tz.utc_to_local(dtstart)
dtend = tz.utc_to_local(dtend)
end
e.dtstart = Icalendar::Values::DateTime.new(dtstart, 'tzid' => @time_zone)
e.dtend = Icalendar::Values::DateTime.new(dtend, 'tzid' => @time_zone)
if event_data[:alarm]
e.alarm do |a|
a.action = 'DISPLAY'
a.summary = event_data[:alarm][:summary]
a.trigger = event_data[:alarm][:trigger]
end
end
e.summary = event_data[:summary]
e.description = event_data[:description]
e.ip_class = 'PRIVATE'
end
end
cal.to_ical
end
end