rake task for deleting comments with external URIs in summary

Author: madoleary

lib/tasks/spam.rake

@@ -1,5 +1,5 @@
 namespace :spam do
-  desc "Clean out objects marked as spam by curators"
+  desc 'Clean out objects marked as spam by curators'
   task clean_spam: :environment do
     if Spam.where(cleaned: false, flagged_by_admin_or_curator: true).any?
       object_types = Spam.where(cleaned: false, flagged_by_admin_or_curator: true).pluck(:spammable_type).uniq
@@ -10,4 +10,34 @@ namespace :spam do
       end
     end
   end
+
+  desc 'Delete comment objects with external URIs'
+
+  def extract_uris(value)
+    URI.extract(value)
+  end
+
+  def find_spam(items)
+    items.select do |item|
+      summary = item.summary
+      uris = extract_uris(summary)
+      return uris.length.positive?
+    end
+
+    items
+  end
+
+  task clean_comments: :environment do
+    case_comments = find_spam(CaseComment.all)
+    case_comments.delete_all if case_comments.length.positive?
+
+    document_comments = find_spam(DocumentComment.all)
+    document_comments.delete_all if document_comments.length.positive?
+
+    point_comments = find_spam(PointComment.all)
+    point_comments.delete_all if point_comments.length.positive?
+
+    topic_comments = find_spam(TopicComment.all)
+    topic_comments.delete_all if topic_comments.length.positive?
+  end
 end