FTS index without content

app/src/main/java/eu/faircode/email/DaoMessage.java

@@ -334,8 +334,7 @@ public interface DaoMessage {
     @Transaction
     @Query("SELECT message.id FROM message" +
             " JOIN folder_view AS folder ON folder.id = message.folder" +
-            " WHERE content" +
+            " WHERE NOT fts" +
-            " AND NOT fts" +
             " AND folder.type <> '" + EntityFolder.OUTBOX + "'" +
             " ORDER BY message.received")
     Cursor getMessageFts();

app/src/main/java/eu/faircode/email/WorkerFts.java

@@ -81,10 +81,11 @@ public class WorkerFts extends Worker {
                             continue;
                         }
 
+                        String text = null;
+                        if (message.content) {
                             File file = message.getFile(context);
-                        String text = HtmlHelper.getFullText(file);
+                            text = HtmlHelper.getFullText(file);
-                        if (text == null)
+                        }
-                            text = "";
 
                         try {
                             sdb.beginTransaction();