Gab Social. All are welcome.

app/workers/scheduler/email_scheduler.rb

@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+class Scheduler::EmailScheduler
+  include Sidekiq::Worker
+
+  sidekiq_options unique: :until_executed, retry: 0
+
+  FREQUENCY      = 7.days.freeze
+  SIGN_IN_OFFSET = 1.day.freeze
+
+  def perform
+    eligible_users.reorder(nil).find_each do |user|
+      next unless user.allows_digest_emails?
+      DigestMailerWorker.perform_async(user.id)
+    end
+  end
+
+  private
+
+  def eligible_users
+    User.emailable
+        .where('current_sign_in_at < ?', (FREQUENCY + SIGN_IN_OFFSET).ago)
+        .where('last_emailed_at IS NULL OR last_emailed_at < ?', FREQUENCY.ago)
+  end
+end