Added emails for reminding past PRO members to upgrade again

• Added:
- emails for reminding past PRO members to upgrade again

app/workers/remind_expired_account_pro_worker.rb

@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+class RemindExpiredAccountProWorker
+  include Sidekiq::Worker
+
+  sidekiq_options queue: 'mailers', retry: 2
+
+  attr_reader :user
+
+  def perform(acct_id, date_range)
+    @acct = Account.find(acct_id)
+    deliver_email(date_range)
+  end
+
+  private
+
+  def deliver_email(date_range)
+    UserMailer.remind_expired_pro(@acct.user, date_range).deliver_now!
+    @acct.user.touch(:last_emailed_at)
+  end
+end

app/workers/scheduler/remind_expired_pro_scheduler.rb

@@ -0,0 +1,45 @@
+# frozen_string_literal: true
+
+class Scheduler::RemindExpiredProScheduler
+  include Sidekiq::Worker
+
+  sidekiq_options retry: 1
+  
+  def perform
+    expired_accounts(8.days.ago, 7.days.ago).find_each do |acct|
+      RemindExpiredAccountProWorker.perform_async(acct.id, '7')
+    end
+
+    expired_accounts(17.days.ago, 16.days.ago).find_each do |acct|
+      RemindExpiredAccountProWorker.perform_async(acct.id, '16')
+    end
+
+    expired_accounts(31.days.ago, 30.days.ago).find_each do |acct|
+      RemindExpiredAccountProWorker.perform_async(acct.id, '30')
+    end
+
+    expired_accounts(46.days.ago, 45.days.ago).find_each do |acct|
+      RemindExpiredAccountProWorker.perform_async(acct.id, '45')
+    end
+
+    expired_accounts(61.days.ago, 60.days.ago).find_each do |acct|
+      RemindExpiredAccountProWorker.perform_async(acct.id, '60')
+    end
+
+    expired_accounts(76.days.ago, 75.days.ago).find_each do |acct|
+      RemindExpiredAccountProWorker.perform_async(acct.id, '75')
+    end
+
+    expired_accounts(91.days.ago, 90.days.ago).find_each do |acct|
+      RemindExpiredAccountProWorker.perform_async(acct.id, '90')
+    end
+  end
+
+  private
+
+  def expired_accounts(start_date, end_date)
+    Account.where('is_pro=FALSE AND pro_expires_at BETWEEN ? AND ?', start_date, end_date)
+  end
+
+  
+end