[mob] Start offline mode journey

mobile/android/app/build.gradle

@@ -71,9 +71,9 @@ android {
             dimension "default"
             applicationIdSuffix ".dev"
         }
-        face {
+        offline {
             dimension "default"
-            applicationIdSuffix ".face"
+            applicationIdSuffix ".offline"
         }
         playstore {
             dimension "default"

mobile/android/app/src/face/res/values/strings.xml

@@ -1,4 +0,0 @@
-<resources>
-    <string name="app_name">Ente Face</string>
-    <string name="backup">backup face</string>
-</resources>

mobile/android/app/src/offline/res/values/strings.xml

@@ -0,0 +1,4 @@
+<resources>
+    <string name="app_name">Ente Offline</string>
+    <string name="backup">backup Offline</string>
+</resources>

mobile/lib/services/local_sync_service.dart

@@ -78,8 +78,8 @@ class LocalSyncService {
       return _existingSync!.future;
     }
     _existingSync = Completer<void>();
-    final int ownerID = Configuration.instance.getUserID()!;
+    final int ownerID = Configuration.instance.getUserID() ?? 0;
-    
+
     // We use a lock to prevent synchronisation to occur while it is downloading
     // as this introduces wrong entry in FilesDB due to race condition
     // This is a fix for https://github.com/ente-io/ente/issues/4296
@@ -98,7 +98,8 @@ class LocalSyncService {
         );
       } else {
         // Load from 0 - 01.01.2010
-        Bus.instance.fire(SyncStatusUpdate(SyncStatus.startedFirstGalleryImport));
+        Bus.instance
+            .fire(SyncStatusUpdate(SyncStatus.startedFirstGalleryImport));
         var startTime = 0;
         var toYear = 2010;
         var toTime = DateTime(toYear).microsecondsSinceEpoch;

mobile/lib/services/machine_learning/machine_learning_controller.dart

@@ -5,6 +5,7 @@ import "package:battery_info/battery_info_plugin.dart";
 import "package:battery_info/model/android_battery_info.dart";
 import "package:battery_info/model/iso_battery_info.dart";
 import "package:logging/logging.dart";
+import "package:photos/core/configuration.dart";
 import "package:photos/core/event_bus.dart";
 import "package:photos/events/machine_learning_control_event.dart";
 
@@ -25,6 +26,9 @@ class MachineLearningController {
   bool get isDeviceHealthy => _isDeviceHealthy;
 
   MachineLearningController() {
+    if (Configuration.instance.getUserID() == null) {
+      return;
+    }
     _logger.info('MachineLearningController constructor');
     _startInteractionTimer(kDefaultInteractionTimeout);
     if (Platform.isIOS) {
@@ -45,6 +49,9 @@ class MachineLearningController {
   }
 
   void onUserInteraction() {
+    if (Configuration.instance.getUserID() == null) {
+      return;
+    }
     if (!_isUserInteracting) {
       _logger.info("User is interacting with the app");
       _isUserInteracting = true;

mobile/lib/ui/home/home_gallery_widget.dart

@@ -77,7 +77,7 @@ class _HomeGalleryWidgetState extends State<HomeGalleryWidget> {
     final gallery = Gallery(
       key: ValueKey(_shouldHideSharedItems),
       asyncLoader: (creationStartTime, creationEndTime, {limit, asc}) async {
-        final ownerID = Configuration.instance.getUserID();
+        final ownerID = Configuration.instance.getUserID() ?? 0;
         final hasSelectedAllForBackup =
             Configuration.instance.hasSelectedAllFoldersForBackup();
         final collectionsToHide =
@@ -89,7 +89,7 @@ class _HomeGalleryWidgetState extends State<HomeGalleryWidget> {
           ignoredCollectionIDs: collectionsToHide,
           ignoreSavedFiles: true,
         );
-        if (hasSelectedAllForBackup) {
+        if (hasSelectedAllForBackup || ownerID == 0) {
           result = await FilesDB.instance.getAllLocalAndUploadedFiles(
             creationStartTime,
             creationEndTime,

mobile/lib/ui/tabs/home_widget.dart

@@ -638,15 +638,18 @@ class _HomeWidgetState extends State<HomeWidget> {
     );
   }
 
+  bool isOfflineMode = true;
   Widget _getBody(BuildContext context) {
-    if (!Configuration.instance.hasConfiguredAccount()) {
+    if (!Configuration.instance.hasConfiguredAccount() && !isOfflineMode) {
       _closeDrawerIfOpen(context);
       return const LandingPageWidget();
     }
     if (!LocalSyncService.instance.hasGrantedPermissions()) {
-      entityService.syncEntities().then((_) {
+      if (isOfflineMode) {
-        PersonService.instance.resetEmailToPartialPersonDataCache();
+        entityService.syncEntities().then((_) {
-      });
+          PersonService.instance.resetEmailToPartialPersonDataCache();
+        });
+      }
       return const GrantPermissionsWidget();
     }
     if (!LocalSyncService.instance.hasCompletedFirstImport()) {
@@ -672,7 +675,8 @@ class _HomeWidgetState extends State<HomeWidget> {
     _showShowBackupHook =
         !Configuration.instance.hasSelectedAnyBackupFolder() &&
             !LocalSyncService.instance.hasGrantedLimitedPermissions() &&
-            CollectionsService.instance.getActiveCollections().isEmpty;
+            CollectionsService.instance.getActiveCollections().isEmpty &&
+            !isOfflineMode;
 
     return Stack(
       children: [
@@ -694,15 +698,17 @@ class _HomeWidgetState extends State<HomeWidget> {
                 _showShowBackupHook
                     ? const StartBackupHookWidget(headerWidget: HeaderWidget())
                     : HomeGalleryWidget(
-                        header: const HeaderWidget(),
+                        header: isOfflineMode
+                            ? const SizedBox.shrink()
+                            : const HeaderWidget(),
                         footer: const SizedBox(
                           height: 160,
                         ),
                         selectedFiles: _selectedFiles,
                       ),
-                _userCollectionsTab,
+                if (!isOfflineMode) _userCollectionsTab,
-                _sharedCollectionTab,
+                if (isOfflineMode) _sharedCollectionTab,
-                _searchTab,
+                if (!isOfflineMode) _searchTab,
               ],
             );
           },
@@ -745,10 +751,11 @@ class _HomeWidgetState extends State<HomeWidget> {
                               ),
                             )
                         : const SizedBox.shrink(),
-                    HomeBottomNavigationBar(
+                    if (!isOfflineMode)
-                      _selectedFiles,
+                      HomeBottomNavigationBar(
-                      selectedTabIndex: _selectedTabIndex,
+                        _selectedFiles,
-                    ),
+                        selectedTabIndex: _selectedTabIndex,
+                      ),
                   ],
                 ),
               );

mobile/lib/ui/tabs/shared_collections_tab.dart

@@ -3,6 +3,7 @@ import "dart:math";
 
 import 'package:flutter/material.dart';
 import 'package:logging/logging.dart';
+import "package:photos/core/configuration.dart";
 import 'package:photos/core/event_bus.dart';
 import 'package:photos/events/collection_updated_event.dart';
 import 'package:photos/events/local_photos_updated_event.dart';
@@ -71,6 +72,11 @@ class _SharedCollectionsTabState extends State<SharedCollectionsTab>
 
   @override
   Widget build(BuildContext context) {
+    if (Configuration.instance.getUserID() == null) {
+      return const Center(
+        child: Text("Please login to view shared collections"),
+      );
+    }
     super.build(context);
     return FutureBuilder<SharedCollections>(
       future: Future.value(CollectionsService.instance.getSharedCollections()),

mobile/lib/ui/viewer/file/file_details_widget.dart

@@ -79,7 +79,7 @@ class _FileDetailsWidgetState extends State<FileDetailsWidget> {
   @override
   void initState() {
     debugPrint('file_details_sheet initState');
-    _currentUserID = Configuration.instance.getUserID()!;
+    _currentUserID = Configuration.instance.getUserID() ?? 0;
     hasLocationData.value = widget.file.hasLocation;
     _isImage = widget.file.fileType == FileType.image ||
         widget.file.fileType == FileType.livePhoto;

mobile/lib/ui/viewer/file/thumbnail_widget.dart

@@ -3,6 +3,7 @@ import "dart:async";
 import 'package:flutter/material.dart';
 import 'package:logging/logging.dart';
 import 'package:photos/core/cache/thumbnail_in_memory_cache.dart';
+import "package:photos/core/configuration.dart";
 import 'package:photos/core/constants.dart';
 import 'package:photos/core/errors.dart';
 import 'package:photos/core/event_bus.dart';
@@ -119,6 +120,7 @@ class _ThumbnailWidgetState extends State<ThumbnailWidget> {
 
   @override
   Widget build(BuildContext context) {
+    int? user = Configuration.instance.getUserID();
     if (widget.file.isRemoteFile) {
       _loadNetworkImage();
     } else {
@@ -193,7 +195,9 @@ class _ThumbnailWidgetState extends State<ThumbnailWidget> {
       const ThumbnailPlaceHolder(),
       content ?? const SizedBox(),
     ];
-    if (widget.shouldShowSyncStatus && !widget.file.isUploaded) {
+    if (widget.shouldShowSyncStatus &&
+        !widget.file.isUploaded &&
+        user != null) {
       viewChildren.add(const UnSyncedIcon());
     }
 

mobile/lib/ui/viewer/search_tab/search_tab.dart

@@ -3,6 +3,7 @@ import "package:flutter/foundation.dart";
 import "package:flutter/material.dart";
 import "package:flutter_animate/flutter_animate.dart";
 import "package:logging/logging.dart";
+import "package:photos/core/configuration.dart";
 import "package:photos/generated/l10n.dart";
 import "package:photos/models/search/album_search_result.dart";
 import "package:photos/models/search/generic_search_result.dart";
@@ -57,6 +58,10 @@ class _SearchTabState extends State<SearchTab> {
 
   @override
   Widget build(BuildContext context) {
+    if (Configuration.instance.getUserID() == null) {
+      return const Text("Not logged in");
+    }
+
     return AllSectionsExamplesProvider(
       child: FadeIndexedStack(
         lazy: false,