Rename janitor pruner to approver pruner

app/logical/approver_pruner.rb

@@ -0,0 +1,33 @@
+class ApproverPruner
+  def inactive_approvers
+    User.where("bit_prefs & ? > 0", User.flag_value_for("can_approve_posts")).select do |user|
+      approval_count = Post.where("created_at >= ? and approver_id = ?", 3.months.ago, user.id).count
+      approval_count == 0
+    end
+  end
+
+  def prune!
+    admin = User.admins.first
+
+    inactive_approvers.each do |user|
+      CurrentUser.scoped(admin, "127.0.0.1") do
+        next if user.is_admin?
+
+        janitor_trial = JanitorTrial.where(user_id: user.id).first
+
+        if janitor_trial && user.can_approve_posts?
+          janitor_trial.demote!
+        else
+          user.can_approve_posts = false
+          user.save
+        end
+ 
+        Dmail.create_split(
+          :to_id => user.id,
+          :title => "Approver inactivity",
+          :body => "You haven't approved a post in the past three months. In order to make sure the list of active approvers is up-to-date, you have lost your approver privileges. Please reply to this message if you want to be reinstated."
+        )
+      end
+    end
+  end
+end