Refactoring

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

@@ -63,31 +63,31 @@ public class WorkerFts extends Worker {
 
         try {
             Log.i("FTS index");
+            Context context = getApplicationContext();
 
             int indexed = 0;
             List<Long> ids = new ArrayList<>(INDEX_BATCH_SIZE);
-            DB db = DB.getInstance(getApplicationContext());
-            SQLiteDatabase sdb = FtsDbHelper.getInstance(getApplicationContext());
-            SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
+            DB db = DB.getInstance(context);
+            SQLiteDatabase sdb = FtsDbHelper.getInstance(context);
+            SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
             try (Cursor cursor = db.message().getMessageFts()) {
                 while (cursor.moveToNext()) {
-                    boolean fts = prefs.getBoolean("fts", false);
-                    if (!fts)
-                        break;
-
                     long id = cursor.getLong(0);
-                    EntityMessage message = db.message().getMessage(id);
-                    if (message != null)
                     try {
-                            Log.i("FTS index=" + message.id);
+                        Log.i("FTS index=" + id);
 
-                            File file = message.getFile(getApplicationContext());
+                        EntityMessage message = db.message().getMessage(id);
+                        if (message == null)
+                            throw new FileNotFoundException("Message gone");
+
+                        File file = message.getFile(context);
                         String text = HtmlHelper.getFullText(file);
+                        if (TextUtils.isEmpty(text))
+                            throw new FileNotFoundException("Message empty");
 
                         if (BuildConfig.DEBUG) {
                             EntityFolder folder = db.folder().getFolder(message.folder);
                             if (folder != null) {
-                                    // \\P{L}+
                                 List<String> features = new ArrayList<>();
                                 for (String word : text.trim().toLowerCase().split("\\W+")) {
                                     if (word.matches(".*\\d.*"))
@@ -108,6 +108,8 @@ public class WorkerFts extends Worker {
                             }
                         }
 
+                        boolean fts = prefs.getBoolean("fts", false);
+                        if (fts)
                             try {
                                 sdb.beginTransaction();
                                 FtsDbHelper.insert(sdb, message, text);
@@ -128,6 +130,7 @@ public class WorkerFts extends Worker {
                         Log.e(ex);
                     }
                 }
+
                 markIndexed(db, ids);
             }