added FixRejectedEditStatesTask to retroactively fix up broken rejected suggested edits

Author: Oaphi

app/tasks/maintenance/fix_rejected_edit_states_task.rb

@@ -0,0 +1,60 @@
+# frozen_string_literal: true
+
+module Maintenance
+  class FixRejectedEditStatesTask < MaintenanceTasks::Task
+    include ApplicationHelper
+
+    def collection
+      SuggestedEdit.rejected
+    end
+
+    def last_revision_before_decided(edit)
+      PostHistory.of_type('post_edited')
+                 .where(post: edit.post)
+                 .where(created_at: edit.post.created_at..edit.decided_at)
+                 .order(created_at: :desc)
+                 .first
+    end
+
+    def initial_revision_before_decided(edit)
+      PostHistory.of_type('initial_revision')
+                 .where(post: edit.post)
+                 .where(created_at: edit.post.created_at..edit.decided_at)
+                 .order(created_at: :desc)
+                 .first
+    end
+
+    def valid_before_attributes?(edit)
+      [
+        :before_body,
+        :before_body_markdown,
+        :before_tags_cache,
+        :before_title
+      ].all? do |attr|
+        edit.send(attr).present?
+      end
+    end
+
+    def process(edit)
+      return if valid_before_attributes?(edit)
+
+      last_revision = last_revision_before_decided(edit).presence || initial_revision_before_decided(edit)
+
+      return unless last_revision.present?
+
+      begin
+        status = edit.update({ before_body: render_markdown(last_revision.after_state),
+                               before_body_markdown: last_revision.after_state,
+                               before_tags: last_revision.after_tags.dup,
+                               before_tags_cache: last_revision.after_tags.map(&:name),
+                               before_title: last_revision.after_title })
+
+        unless status
+          Rails.logger.warn("Failed to fix edit ##{edit.id}")
+        end
+      rescue StandardError => e
+        Rails.logger.warn(e)
+      end
+    end
+  end
+end