keep closed status when migrating poll to new style

plugins/poll/lib/tasks/migrate_old_polls.rake

@@ -1,3 +1,28 @@
+CLOSED_POLL_PREFIXES = {
+  "ar" => "هذا التصويت مغلق",
+  "ca" => "Enquesta tancada",
+  "de" => "Beendete Umfrage",
+  "es" => "Encuesta cerrada",
+  "fi" => "Suljettu kysely",
+  "fr" => "Sondage fermé",
+  "he" => "הצבעה סגורה",
+  "it" => "Sondaggio Chiuso",
+  "ko" => "투표 닫기",
+  "pl_PL" => "Zamknięta ankieta",
+  "pt" => "Votação encerrada",
+  "pt_BR" => "Votação encerrada",
+  "ru" => "Завершившийся опрос",
+  "sq" => "Sondazh i Mbyllur",
+  "te" => "మూసేసిన ఓటు",
+  "tr_TR" => "Bitmiş Anket",
+  "zh_CN" => "已关闭的投票：",
+}
+
+def poll_was_closed?(title)
+  prefix = CLOSED_POLL_PREFIXES[SiteSetting.default_locale] || "Closed Poll"
+  title.start_with?(prefix)
+end
+
 desc "Migrate old polls to new syntax"
 task "poll:migrate_old_polls" => :environment do
   require "timecop"
@@ -11,6 +36,8 @@ task "poll:migrate_old_polls" => :environment do
     # load the post from the db
     if post = Post.find_by(id: post_id)
       putc "."
+      # skip if already migrated
+      next if post.custom_fields.include?("polls")
       # go back in time
       Timecop.freeze(post.created_at + 1.minute) do
         post.raw = post.raw.gsub(/\n\n([ ]*[-\*\+] )/, "\n\\1") + "\n\n"
@@ -42,6 +69,11 @@ task "poll:migrate_old_polls" => :environment do
           # submit vote
           DiscoursePoll::Poll.vote(post_id, "poll", [selected_option["id"]], user_id) rescue nil
         end
+        # close the poll
+        if post.topic.archived? || post.topic.closed? || poll_was_closed?(post.topic.title)
+          post.custom_fields["polls"]["poll"]["status"] = "closed"
+          post.save_custom_fields(true)
+        end
       end
     end
   end