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

app/controllers/conferences_controller.rb

@@ -68,42 +68,22 @@ class ConferencesController < ApplicationController
   end
 
   def calendar
+    i_calendar = Icalendar::Calendar.new
+
     respond_to do |format|
       format.ics do
-        calendar = Icalendar::Calendar.new
-        Conference.all.each do |conf|
-          if params[:full]
-            event_schedules = conf.program.selected_event_schedules(
-              includes: [{ event: %i[event_type speakers submitter] }]
-            )
-            calendar = icalendar_proposals(calendar, event_schedules.map(&:event), conf)
-          else
-            calendar.event do |e|
-              e.dtstart = conf.start_date
-              e.dtstart.ical_params = { 'VALUE'=>'DATE' }
-              e.dtend = conf.end_date
-              e.dtend.ical_params = { 'VALUE'=>'DATE' }
-              e.duration = "P#{(conf.end_date - conf.start_date + 1).floor}D"
-              e.created = conf.created_at
-              e.last_modified = conf.updated_at
-              e.summary = conf.title
-              e.description = conf.description
-              e.uid = conf.guid
-              e.url = conference_url(conf.short_title)
-              v = conf.venue
-              if v
-                e.geo = v.latitude, v.longitude if v.latitude && v.longitude
-                location = ''
-                location += "#{v.street}, " if v.street
-                location += "#{v.postalcode} #{v.city}, " if v.postalcode && v.city
-                location += v.country_name if v.country_name
-                e.location = location if location
-              end
-            end
-          end
+        Conference.all.each do |conference|
+          conference_url = conference_url(conference.short_title)
+          Conference::Calendar::EventBuilder.call(
+            conference: conference,
+            conference_url: conference_url,
+            calendar: i_calendar,
+            is_full_calendar: params[:full]
+          )
         end
-        calendar.publish
-        render inline: calendar.to_ical
+
+        i_calendar.publish
+        render inline: i_calendar.to_ical
       end
     end
   end

app/services/conference/calendar.rb

@@ -0,0 +1,64 @@
+class Conferences::Calendar
+  private_class_method :new
+
+  def self.call(conference:, is_full_calendar:)
+    new(conference, is_full_calendar).call
+  end
+
+  def initialize(conference:, is_full_calendar:)
+    @calendar = Icalendar::Calendar.new
+    @conference = conference
+    @is_full_calendar = is_full_calendar
+  end
+
+  def not_full_calendar
+    calendar.event do |e|
+      default_calendar_params(e)
+      if @conference.venue
+        venue_calendar_params(e)
+      end
+    end
+    calendar
+  end
+
+  def full_calendar
+    icalendar_proposals(@calendar, event_schedules.map(&:event), @conference)
+  end
+
+  private
+
+  def default_calendar_params(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(@conference.short_title)
+  end
+
+  def venue_calendar_params(event)
+    venue = @conference.venue
+    event.geo = venue.latitude, venue.longitude if venue.latitude && venue.longitude
+    location = location(venue)
+    event.location = location if location
+  end
+
+  def location(venue)
+    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
+
+  def event_schedules
+    @conference.program.selected_event_schedules(
+        includes: [{ event: %i[event_type speakers submitter] }]
+      )
+  end
+end

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

config/routes.rb

@@ -215,7 +215,7 @@ Osem::Application.routes.draw do
 
   get '/admin' => redirect('/admin/conferences')
 
-  get '/calendar' => 'conferences#calendar'
+  get '/calendar' => 'conferences#calendar', action: :calendar
 
   if ENV.fetch('OSEM_ROOT_CONFERENCE', nil)
     root to: redirect("/conferences/#{ENV.fetch('OSEM_ROOT_CONFERENCE')}")

spec/controllers/conferences_controller_spec.rb

@@ -49,4 +49,44 @@ describe ConferencesController do
     end
   end
 
+  describe 'GET#calendar' do
+    let(:i_calendar) do
+      instance_double(Icalendar::Calendar, publish: true, to_ical: true)
+    end
+    let!(:conference) { create(:conference) }
+    let(:params) { { full: double(:full), format: :ics } }
+    let(:user) { create :user, is_admin: true }
+    
+    setup do
+      user.update!(is_admin: true)
+      
+      sign_in user
+
+      allow(Conference::Calendar::EventBuilder)
+        .to receive(:call)
+
+      allow(Icalendar::Calendar)
+        .to receive(:new)
+        .and_return(i_calendar)
+    end
+
+    it 'calls Conference::Calendar::EventBuilder with correct params' do
+      expect(Conference::Calendar::EventBuilder)
+        .to receive(:call)
+        .with(
+          conference: conference,
+          conference_url: conference_url(conference.short_title),
+          calendar: i_calendar,
+          is_full_calendar: params[:full].to_s
+        )
+      
+      get :calendar, params: params
+    end
+
+    it 'calls calendar#publish' do
+      expect(i_calendar).to receive(:publish)
+
+      get :calendar, params: params
+    end
+  end
 end

spec/services/conference/calendar/event_builder_spec.rb

@@ -0,0 +1,64 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Conference::Calendar::EventBuilder, type: :serializer do
+  describe '.call' do
+    let(:conference_url) { 'www.sample.com' }
+    let!(:calendar) { Icalendar::Calendar.new }
+    let(:conference) { create :full_conference }
+    
+    context 'when is a full calendar' do
+      let(:proposals_calendar) { double(:proposals_calendar) }
+
+      setup do
+        allow_any_instance_of(ConferenceHelper)
+          .to receive(:icalendar_proposals)
+          .and_return(proposals_calendar)
+      end
+    
+      it 'returns icalendar_proposals' do
+        result = described_class.call(
+          conference: conference, 
+          calendar: calendar, 
+          is_full_calendar: true, 
+          conference_url: conference_url
+        )
+
+        expect(result).to eq(proposals_calendar)
+      end
+    end
+
+    context 'when is a not full calendar' do
+      let(:venue) { conference.venue }
+      setup do
+        venue.update(latitude: '-100', longitude:'-200')
+      end
+      
+      it 'set callendar params' do
+        calendar = Icalendar::Calendar.new
+        described_class.call(
+          conference: conference, 
+          calendar: calendar, 
+          is_full_calendar: false, 
+          conference_url: conference_url
+        )
+        event = calendar.events.first
+      
+        expect(event.location).to eq("#{venue.street}, #{venue.postalcode} #{venue.city}, #{venue.country_name}")
+        expect(event.dtstart).to eq(conference.start_date)
+        expect(event.dtstart.ical_params).to eq({ 'VALUE'=>'DATE' })
+        expect(event.dtend).to eq(conference.end_date)
+        expect(event.dtend.ical_params).to eq({ 'VALUE'=>'DATE' })
+        expect(event.duration.present?).to eq(true)
+        expect(event.created).to eq(conference.created_at)
+        expect(event.last_modified).to eq(conference.updated_at)
+        expect(event.summary).to eq(conference.title)
+        expect(event.description).to eq(conference.description)
+        expect(event.uid).to eq(conference.guid)
+        expect(event.url.value_ical).to eq(conference_url)
+        expect(event.geo).to eq([conference.venue.latitude.to_f, conference.venue.longitude.to_f])
+      end 
+    end
+  end
+end