refactored ConferencesController#calendar: separated calendar event creation into an specific service

app/services/conference/calendar/event_builder.rb

@@ -0,0 +1,67 @@
+class Conference::Calendar::EventBuilder
+  include ConferenceHelper
+
+  def self.call(conference:, is_full_calendar:, calendar:, conference_url:)
+    new(conference:, is_full_calendar:, calendar:, conference_url:).call
+  end
+
+  def initialize(conference:, is_full_calendar:, calendar:, conference_url:)
+    @calendar = calendar
+    @conference_url = conference_url
+    @conference = conference
+    @is_full_calendar = is_full_calendar
+    @venue = conference.venue
+  end
+
+  def call
+    return build_full_calendar if is_full_calendar
+     
+    build_not_full_calendar
+  end
+
+  private
+  attr :conference, :is_full_calendar, :calendar, :conference_url, :venue
+
+  def build_full_calendar
+    event_schedules = conference.program.selected_event_schedules(
+      includes: [{ event: %i[event_type speakers submitter] }]
+    )
+    icalendar_proposals(calendar, event_schedules.map(&:event), conference)
+  end
+
+  def build_not_full_calendar
+    calendar.event do |event|
+      build_event_general_informations(event)
+      build_event_venue(event) if venue
+    end
+    calendar
+  end
+
+  def build_event_general_informations(event)
+    event.dtstart = conference.start_date
+    event.dtstart.ical_params = { 'VALUE'=>'DATE' }
+    event.dtend = conference.end_date
+    event.dtend.ical_params = { 'VALUE'=>'DATE' }
+    event.duration = "P#{(conference.end_date - conference.start_date + 1).floor}D"
+    event.created = conference.created_at
+    event.last_modified = conference.updated_at
+    event.summary = conference.title
+    event.description = conference.description
+    event.uid = conference.guid
+    event.url = conference_url
+  end
+
+  def build_event_venue(event)
+    event.geo = venue.latitude, venue.longitude if venue.latitude && venue.longitude
+    location = build_venue_location
+    event.location = location if location
+  end
+  
+  def build_venue_location
+    location = ''
+    location += "#{venue.street}, " if venue.street
+    location += "#{venue.postalcode} #{venue.city}, " if venue.postalcode && venue.city
+    location += venue.country_name if venue.country_name
+    location
+  end
+end