Merge pull request #3749 from alphagov/pnp-9732-redirect-orphaned-html-publications-to-their-paren

Add rake task to find semi-orphaned html_publications and redirect to their parents

Author: KludgeKML

lib/tasks/redirect_semi_orphaned_html_publications.rake

@@ -0,0 +1,46 @@
+desc "Finds HTML Publications that were deleted from their publication without being redirected to it, and fixes that"
+task redirect_semi_orphaned_html_publications: :environment do
+  successes = 0
+  editions = Edition.where(phase: "live", rendering_app: "government-frontend", schema_name: "html_publication", state: "published")
+  found = editions.count
+
+  editions.each do |orphan_edition|
+    successes += 1 if redirect_orphaned_document(orphan_edition.document)
+  end
+
+  Rails.logger.info("Of #{found} orphans, #{successes} were redirected to their parent")
+end
+
+def redirect_orphaned_document(document)
+  parent_link = document.live.links.find_by(link_type: "parent")
+  if parent_link.nil?
+    puts("ERROR: Couldn't find parent link for #{document.content_id}")
+    return false
+  end
+
+  parent = parent_link.target_documents.find_by(locale: [document.locale, "en"])
+  if parent.nil?
+    puts("ERROR: Couldn't find parent for #{document.content_id}")
+    return false
+  end
+
+  if document.draft.present?
+    Commands::V2::DiscardDraft.call(
+      {
+        content_id: document.content_id,
+        locale: document.locale,
+      },
+    )
+  end
+
+  Commands::V2::Unpublish.call(
+    {
+      content_id: document.content_id,
+      locale: document.locale,
+      type: "redirect",
+      alternative_path: parent.live.base_path,
+    },
+  )
+
+  true
+end