added post pruner, added mod action notifications when approving/deleting posts

app/logical/post_pruner.rb

@@ -0,0 +1,47 @@
+class PostPruner
+  attr_reader :admin
+  
+  def initialize
+    @admin = User.where(:level => User::Levels::ADMIN).first
+  end
+  
+  def prune!
+    prune_pending!
+    prune_flagged!
+    prune_mod_actions!
+  end
+  
+protected
+
+  def prune_pending!
+    CurrentUser.scoped(admin, "127.0.0.1") do
+      Post.where("is_deleted = ? and is_pending = ? and created_at < ?", false, true, 3.days.ago).each do |post|
+        begin
+          post.flag!("Unapproved in three days")
+        rescue PostFlag::Error
+          # swallow
+        end
+        post.delete!
+      end
+    end
+  end
+  
+  def prune_flagged!
+    CurrentUser.scoped(admin, "127.0.0.1") do
+      Post.where("is_deleted = ? and is_flagged = ?", false, true).each do |post|
+        if post.flags.unresolved.old.any?
+          begin
+            post.flag!("Unapproved in three days after returning to moderation queue")
+          rescue PostFlag::Error
+            # swallow
+          end
+          post.delete!
+        end
+      end
+    end
+  end
+  
+  def prune_mod_actions!
+    ModAction.destroy_all(["creator_id = ? and description like ?", admin.id, "deleted post %"])
+  end
+end