move weekly digest email to sidekiq-cron and remove whenever

Gemfile

@@ -17,17 +17,13 @@ gem 'unicorn'
 gem 'kaminari', '~> 1.1.1'
 gem "simple_form", ">= 3.0.0"
 gem 'rollbar', '2.8.3'
-gem 'whenever', require: false
 gem 'prawn', '~> 2.2.0'
 gem 'prawn-table', '~> 0.2.2'
 gem 'elasticsearch-model'
 gem 'elasticsearch-rails'
 gem 'skylight'
 gem 'sidekiq', '5.1.3'
-gem 'sidekiq-cron', '0.6.3'
-# TODO: remove this once the following issue has been addressed
-#       https://github.com/ondrejbartas/sidekiq-cron/issues/199
-gem 'rufus-scheduler', '~> 3.4.2'
+gem 'sidekiq-cron', '~> 1.0.4'
 
 # Assets
 gem 'jquery-rails', '>= 4.2.0'

Gemfile.lock

@@ -101,7 +101,6 @@ GEM
     chromedriver-helper (1.2.0)
       archive-zip (~> 0.10)
       nokogiri (~> 1.8)
-    chronic (0.10.2)
     coderay (1.1.2)
     coffee-rails (4.1.0)
       coffee-script (>= 2.2.0)
@@ -144,7 +143,7 @@ GEM
       multi_json
     erubi (1.7.1)
     erubis (2.7.0)
-    et-orbi (1.1.2)
+    et-orbi (1.1.4)
       tzinfo
     execjs (2.6.0)
     fabrication (2.11.3)
@@ -156,6 +155,9 @@ GEM
     formtastic (3.1.5)
       actionpack (>= 3.2.13)
     formtastic_i18n (0.6.0)
+    fugit (1.1.5)
+      et-orbi (~> 1.1, >= 1.1.3)
+      raabro (~> 1.1)
     gli (2.16.0)
     globalid (0.4.1)
       activesupport (>= 4.2.0)
@@ -241,6 +243,7 @@ GEM
     public_suffix (2.0.5)
     pundit (0.3.0)
       activesupport (>= 3.0.0)
+    raabro (1.1.6)
     rack (1.6.10)
     rack-protection (2.0.1)
       rack
@@ -324,8 +327,6 @@ GEM
       unicode-display_width (~> 1.0, >= 1.0.1)
     ruby-progressbar (1.9.0)
     rubyzip (1.2.1)
-    rufus-scheduler (3.4.2)
-      et-orbi (~> 1.0)
     sass (3.4.21)
     sass-rails (5.0.7)
       railties (>= 4.0.0, < 6)
@@ -345,8 +346,8 @@ GEM
       connection_pool (~> 2.2, >= 2.2.0)
       rack-protection (>= 1.5.0)
       redis (>= 3.3.5, < 5)
-    sidekiq-cron (0.6.3)
-      rufus-scheduler (>= 3.3.0)
+    sidekiq-cron (1.0.4)
+      fugit (~> 1.1)
       sidekiq (>= 4.2.1)
     simple_form (3.1.0)
       actionpack (~> 4.0)
@@ -389,8 +390,6 @@ GEM
       binding_of_caller (>= 0.7.2)
       railties (>= 4.0)
       sprockets-rails (>= 2.0, < 4.0)
-    whenever (0.9.4)
-      chronic (>= 0.6.3)
     xpath (3.0.0)
       nokogiri (~> 1.8)
 
@@ -438,18 +437,16 @@ DEPENDENCIES
   rollbar (= 2.8.3)
   rspec-rails (~> 3.7.2)
   rubocop (~> 0.52.1)
-  rufus-scheduler (~> 3.4.2)
   sass-rails (~> 5.0.7)
   select2-rails
   shoulda-matchers (~> 3.1.2)
   sidekiq (= 5.1.3)
-  sidekiq-cron (= 0.6.3)
+  sidekiq-cron (~> 1.0.4)
   simple_form (>= 3.0.0)
   skylight
   uglifier (= 2.7.2)
   unicorn
   web-console (= 2.1.3)
-  whenever
 
 RUBY VERSION
    ruby 2.3.0p0

app/jobs/organization_notifier_job.rb

@@ -0,0 +1,12 @@
+class OrganizationNotifierJob < ActiveJob::Base
+  queue_as :cron
+
+  def perform
+    Organization.all.find_each do |org|
+      posts = org.posts.active.of_active_members.from_last_week
+      if posts.present?
+        OrganizationNotifier.recent_posts(posts).deliver_later
+      end
+    end
+  end
+end

config/schedule.yml

@@ -0,0 +1,4 @@
+weekly_digest:
+  cron: '0 9 * * 1' # every monday at 9am
+  class: 'OrganizationNotifierJob'
+  queue: cron