[mob] Minor fixes (#1724)

## Description
In case of semantic search, the cache update was taking time due to
debouncer.
It was resulting in re-indexing of certain files. Also, the status of
indexing was stale as we were relying on same event to schedule update
of cache and refresh status (which relies on cache).
## Tests

mobile/lib/db/embeddings_db.dart

@@ -63,6 +63,19 @@ class EmbeddingsDB {
     return _convertToEmbeddings(results);
   }
 
+  // Get FileIDs for a specific model
+  Future<Set<int>> getFileIDs(Model model) async {
+    final db = await _database;
+    final results = await db.getAll(
+      'SELECT $columnFileID FROM $tableName WHERE $columnModel = ?',
+      [modelToInt(model)!],
+    );
+    if (results.isEmpty) {
+      return <int>{};
+    }
+    return results.map((e) => e[columnFileID] as int).toSet();
+  }
+
   Future<void> put(Embedding embedding) async {
     final db = await _database;
     await db.execute(

mobile/lib/db/upload_locks_db.dart

@@ -90,7 +90,7 @@ class UploadLocksDB {
   static List<String> _createTrackUploadsTable() {
     return [
       '''
-                CREATE TABLE ${_trackUploadTable.table} (
+                CREATE TABLE IF NOT EXISTS ${_trackUploadTable.table} (
                   ${_trackUploadTable.columnID} INTEGER PRIMARY KEY,
                   ${_trackUploadTable.columnLocalID} TEXT NOT NULL,
                   ${_trackUploadTable.columnFileHash} TEXT NOT NULL,
@@ -109,7 +109,7 @@ class UploadLocksDB {
                 )
                 ''',
       '''
-                CREATE TABLE ${_partsTable.table} (
+                CREATE TABLE IF NOT EXISTS ${_partsTable.table} (
                   ${_partsTable.columnObjectKey} TEXT NOT NULL REFERENCES ${_trackUploadTable.table}(${_trackUploadTable.columnObjectKey}) ON DELETE CASCADE,
                   ${_partsTable.columnPartNumber} INTEGER NOT NULL,
                   ${_partsTable.columnPartUrl} TEXT NOT NULL,

mobile/lib/events/embedding_updated_event.dart

@@ -1,3 +1,5 @@
 import "package:photos/events/event.dart";
 
 class EmbeddingUpdatedEvent extends Event {}
+
+class EmbeddingCacheUpdatedEvent extends Event {}

mobile/lib/generated/intl/messages_pt.dart

@@ -631,8 +631,9 @@ class MessageLookup extends MessageLookupByLibrary {
             MessageLookupByLibrary.simpleMessage("Dobre seu armazenamento"),
         "download": MessageLookupByLibrary.simpleMessage("Baixar"),
         "downloadFailed":
-            MessageLookupByLibrary.simpleMessage("Falha ao baixar"),
-        "downloading": MessageLookupByLibrary.simpleMessage("Baixando..."),
+            MessageLookupByLibrary.simpleMessage("Falha no download"),
+        "downloading":
+            MessageLookupByLibrary.simpleMessage("Fazendo download..."),
         "dropSupportEmail": m17,
         "duplicateFileCountWithStorageSaved": m18,
         "duplicateItemsGroup": m19,
@@ -718,8 +719,8 @@ class MessageLookup extends MessageLookupByLibrary {
             MessageLookupByLibrary.simpleMessage("Falha ao aplicar o código"),
         "failedToCancel":
             MessageLookupByLibrary.simpleMessage("Falha ao cancelar"),
-        "failedToDownloadVideo":
-            MessageLookupByLibrary.simpleMessage("Falha ao baixar vídeo"),
+        "failedToDownloadVideo": MessageLookupByLibrary.simpleMessage(
+            "Falha ao fazer download do vídeo"),
         "failedToFetchOriginalForEdit": MessageLookupByLibrary.simpleMessage(
             "Falha ao obter original para edição"),
         "failedToFetchReferralDetails": MessageLookupByLibrary.simpleMessage(
@@ -737,7 +738,7 @@ class MessageLookup extends MessageLookupByLibrary {
         "familyPlans": MessageLookupByLibrary.simpleMessage("Plano familiar"),
         "faq": MessageLookupByLibrary.simpleMessage("Perguntas frequentes"),
         "faqs": MessageLookupByLibrary.simpleMessage("Perguntas frequentes"),
-        "favorite": MessageLookupByLibrary.simpleMessage("Favoritar"),
+        "favorite": MessageLookupByLibrary.simpleMessage("Favorito"),
         "feedback": MessageLookupByLibrary.simpleMessage("Comentários"),
         "fileFailedToSaveToGallery": MessageLookupByLibrary.simpleMessage(
             "Falha ao salvar o arquivo na galeria"),
@@ -904,8 +905,8 @@ class MessageLookup extends MessageLookupByLibrary {
             MessageLookupByLibrary.simpleMessage("Carregando galeria..."),
         "loadingMessage":
             MessageLookupByLibrary.simpleMessage("Carregando suas fotos..."),
-        "loadingModel":
-            MessageLookupByLibrary.simpleMessage("Baixando modelos..."),
+        "loadingModel": MessageLookupByLibrary.simpleMessage(
+            "Fazendo download de modelos..."),
         "localGallery": MessageLookupByLibrary.simpleMessage("Galeria local"),
         "location": MessageLookupByLibrary.simpleMessage("Local"),
         "locationName": MessageLookupByLibrary.simpleMessage("Nome do Local"),

mobile/lib/generated/intl/messages_zh.dart

@@ -124,7 +124,7 @@ class MessageLookup extends MessageLookupByLibrary {
 
   static String m37(providerName) => "如果您被收取费用，请用英语与 ${providerName} 的客服聊天";
 
-  static String m38(endDate) => "免费试用有效期至 ${endDate}。\n之后您可以选择付费计划。";
+  static String m38(endDate) => "免费试用有效期至 ${endDate}。\n您可以随后购买付费计划。";
 
   static String m39(toEmail) => "请给我们发送电子邮件至 ${toEmail}";
 

mobile/lib/services/machine_learning/semantic_search/semantic_search_service.dart

@@ -190,6 +190,7 @@ class SemanticSearchService {
     _logger.info(
       "Loading ${_cachedEmbeddings.length} took: ${(endTime.millisecondsSinceEpoch - startTime.millisecondsSinceEpoch)}ms",
     );
+    Bus.instance.fire(EmbeddingCacheUpdatedEvent());
     _logger.info("Cached embeddings: " + _cachedEmbeddings.length.toString());
   }
 
@@ -225,7 +226,9 @@ class SemanticSearchService {
   Future<List<int>> _getFileIDsToBeIndexed() async {
     final uploadedFileIDs = await FilesDB.instance
         .getOwnedFileIDs(Configuration.instance.getUserID()!);
-    final embeddedFileIDs = _cachedEmbeddings.map((e) => e.fileID).toSet();
+    final embeddedFileIDs =
+        await EmbeddingsDB.instance.getFileIDs(_currentModel);
+
     uploadedFileIDs.removeWhere(
       (id) => embeddedFileIDs.contains(id),
     );

mobile/lib/ui/settings/machine_learning_settings_page.dart

@@ -228,13 +228,13 @@ class MagicSearchIndexStatsWidget extends StatefulWidget {
 class _MagicSearchIndexStatsWidgetState
     extends State<MagicSearchIndexStatsWidget> {
   IndexStatus? _status;
-  late StreamSubscription<EmbeddingUpdatedEvent> _eventSubscription;
+  late StreamSubscription<EmbeddingCacheUpdatedEvent> _eventSubscription;
 
   @override
   void initState() {
     super.initState();
     _eventSubscription =
-        Bus.instance.on<EmbeddingUpdatedEvent>().listen((event) {
+        Bus.instance.on<EmbeddingCacheUpdatedEvent>().listen((event) {
       _fetchIndexStatus();
     });
     _fetchIndexStatus();