fix(mobile): keep drag select going while the grid auto scrolls

CODEOWNERS

@@ -5,4 +5,3 @@
 /machine-learning/ @mertalev
 /e2e/ @danieldietzler
 /mobile/ @shenlong-tanwen @santoshakil
-/native/ @santoshakil @mertalev

mobile/integration_test/native_core_test.dart

@@ -1,33 +0,0 @@
-// Plumbing check: proves immich_native_core is usable from the real immich app on
-// a real device/sim — the build-hook compiled the Rust for this target, the code
-// asset bundled into the app, and the @Native symbols resolve at runtime.
-// Self-contained: does NOT boot the immich app or need a server.
-//
-// Run:  flutter test integration_test/native_core_test.dart -d <device>
-import 'dart:convert';
-import 'dart:typed_data';
-
-import 'package:flutter_test/flutter_test.dart';
-import 'package:immich_native_core/immich_native_core.dart';
-import 'package:integration_test/integration_test.dart';
-
-void main() {
-  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
-
-  test('native core loads: coreVersion is non-empty', () {
-    expect(coreVersion(), isNotEmpty);
-  });
-
-  test('sha1Hex matches the FIPS-180 vector', () {
-    expect(
-      sha1Hex(Uint8List.fromList(utf8.encode('abc'))),
-      'a9993e364706816aba3e25717850c26c9cd0d89d',
-    );
-  });
-
-  test('rotateRgba8888 (the PR #29337 algorithm) rotates 180', () {
-    // 2x1: red, green -> green, red
-    final src = Uint8List.fromList([255, 0, 0, 255, 0, 255, 0, 255]);
-    expect(rotateRgba8888(src, 8, 2, 1, 3), [0, 255, 0, 255, 255, 0, 0, 255]);
-  });
-}

mobile/lib/domain/services/timeline.service.dart

@@ -182,6 +182,18 @@ class TimelineService {
     return _buffer.slice(start, start + count);
   }
 
+  /// Reads a range without disturbing the buffer; queries the source if it isn't resident.
+  Future<List<BaseAsset>> getAssetsRange(int index, int count) async {
+    if (index < 0 || count <= 0 || index >= _totalAssets) {
+      return const [];
+    }
+    final clamped = math.min(count, _totalAssets - index);
+    if (hasRange(index, clamped)) {
+      return getAssets(index, clamped);
+    }
+    return _assetSource(index, clamped);
+  }
+
   // Preload assets around the given index for asset viewer
   Future<void> preloadAssets(int index) => _mutex.run(() => _loadAssets(index, math.min(5, _totalAssets - index)));
 

mobile/lib/presentation/widgets/timeline/drag_selection_controller.dart

@@ -0,0 +1,175 @@
+import 'dart:collection';
+
+import 'package:immich_mobile/domain/models/asset/base_asset.model.dart';
+
+// Tracks the [anchor..current] range selected by a drag. The in-buffer part of
+// each tick is selected synchronously so it follows the finger without racing;
+// the rare beyond-buffer part is read async (applied only if still in range) and
+// [end] reads whatever is still missing so the final range always lands.
+class DragSelectionController {
+  DragSelectionController({required this.getAssetSafe, required this.getAssetsRange, required this.onChange});
+
+  final BaseAsset? Function(int index) getAssetSafe;
+  final Future<List<BaseAsset>> Function(int index, int count) getAssetsRange;
+  final void Function(Set<BaseAsset> select, Set<BaseAsset> deselect) onChange;
+
+  final HashMap<int, BaseAsset> _selected = HashMap();
+  // Indices the buffer didn't hold yet (the edge outran the async buffer-load on a
+  // fast scroll); read in by _extendPending and guaranteed by end().
+  final Set<int> _pending = {};
+  int? _anchor;
+  int? _lo;
+  int? _hi;
+  bool _disposed = false;
+
+  // Call before starting a new drag so a previous drag's in-flight read can't
+  // leak into the new selection.
+  void dispose() => _disposed = true;
+
+  void _emit(Set<BaseAsset> select, Set<BaseAsset> deselect) {
+    if (_disposed) {
+      return;
+    }
+    onChange(select, deselect);
+  }
+
+  void start(int anchor) {
+    _selected.clear();
+    _pending.clear();
+    _anchor = anchor;
+    _lo = anchor;
+    _hi = anchor;
+    _select(anchor);
+    _extendPending();
+  }
+
+  void enter(int current) {
+    final anchor = _anchor;
+    if (anchor == null || _lo == null || _hi == null) {
+      return;
+    }
+    final ns = current < anchor ? current : anchor;
+    final ne = current < anchor ? anchor : current;
+    final ps = _lo!;
+    final pe = _hi!;
+    if (ns == ps && ne == pe) {
+      return;
+    }
+
+    final toSelect = <BaseAsset>{};
+    final toDeselect = <BaseAsset>{};
+
+    _forEach(ps, ns - 1, (k) => _removeIndex(k, toDeselect));
+    _forEach(ne + 1, pe, (k) => _removeIndex(k, toDeselect));
+    _forEach(ns, ps - 1, (k) => _addIndex(k, toSelect));
+    _forEach(pe + 1, ne, (k) => _addIndex(k, toSelect));
+
+    _lo = ns;
+    _hi = ne;
+
+    if (toSelect.isNotEmpty || toDeselect.isNotEmpty) {
+      _emit(toSelect, toDeselect);
+    }
+    _extendPending();
+  }
+
+  Future<void> end() async {
+    final lo = _lo;
+    final hi = _hi;
+    if (lo == null || hi == null) {
+      return;
+    }
+    final missing = <int>[];
+    for (var k = lo; k <= hi; k++) {
+      if (!_selected.containsKey(k)) {
+        missing.add(k);
+      }
+    }
+    if (missing.isEmpty) {
+      return;
+    }
+    final from = missing.first;
+    final assets = await getAssetsRange(from, missing.last - from + 1);
+    final missingSet = missing.toSet();
+    final toSelect = <BaseAsset>{};
+    for (var i = 0; i < assets.length; i++) {
+      final idx = from + i;
+      if (missingSet.contains(idx) && !_selected.containsKey(idx)) {
+        _selected[idx] = assets[i];
+        _pending.remove(idx);
+        toSelect.add(assets[i]);
+      }
+    }
+    if (toSelect.isNotEmpty) {
+      _emit(toSelect, const {});
+    }
+  }
+
+  void _select(int index) {
+    final asset = getAssetSafe(index);
+    if (asset != null) {
+      _selected[index] = asset;
+      _pending.remove(index);
+      _emit({asset}, const {});
+    } else {
+      _pending.add(index);
+    }
+  }
+
+  void _addIndex(int index, Set<BaseAsset> toSelect) {
+    if (_selected.containsKey(index)) {
+      return;
+    }
+    final asset = getAssetSafe(index);
+    if (asset != null) {
+      _selected[index] = asset;
+      _pending.remove(index);
+      toSelect.add(asset);
+    } else {
+      _pending.add(index);
+    }
+  }
+
+  void _removeIndex(int index, Set<BaseAsset> toDeselect) {
+    _pending.remove(index);
+    final asset = _selected.remove(index);
+    if (asset != null) {
+      toDeselect.add(asset);
+    }
+  }
+
+  Future<void> _extendPending() async {
+    if (_pending.isEmpty) {
+      return;
+    }
+    var from = _pending.first;
+    var to = _pending.first;
+    for (final k in _pending) {
+      if (k < from) {
+        from = k;
+      }
+      if (k > to) {
+        to = k;
+      }
+    }
+    final assets = await getAssetsRange(from, to - from + 1);
+    final toSelect = <BaseAsset>{};
+    for (var i = 0; i < assets.length; i++) {
+      final idx = from + i;
+      if (_pending.contains(idx) && _lo != null && idx >= _lo! && idx <= _hi!) {
+        _selected[idx] = assets[i];
+        toSelect.add(assets[i]);
+      }
+    }
+    _pending.removeWhere((idx) => _selected.containsKey(idx));
+    if (toSelect.isNotEmpty) {
+      _emit(toSelect, const {});
+    }
+  }
+
+  void _forEach(int lo, int hi, void Function(int) fn) {
+    for (var k = lo; k <= hi; k++) {
+      fn(k);
+    }
+  }
+}

mobile/lib/presentation/widgets/timeline/timeline.widget.dart

@@ -1,5 +1,4 @@
 import 'dart:async';
-import 'dart:collection';
 import 'dart:math' as math;
 
 import 'package:collection/collection.dart';
@@ -8,7 +7,6 @@ import 'package:flutter/gestures.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
-import 'package:immich_mobile/domain/models/asset/base_asset.model.dart';
 import 'package:immich_mobile/domain/models/events.model.dart';
 import 'package:immich_mobile/domain/models/timeline.model.dart';
 import 'package:immich_mobile/domain/utils/event_stream.dart';
@@ -20,6 +18,7 @@ import 'package:immich_mobile/presentation/widgets/timeline/constants.dart';
 import 'package:immich_mobile/presentation/widgets/timeline/scrubber.widget.dart';
 import 'package:immich_mobile/presentation/widgets/timeline/segment.model.dart';
 import 'package:immich_mobile/presentation/widgets/timeline/timeline.state.dart';
+import 'package:immich_mobile/presentation/widgets/timeline/drag_selection_controller.dart';
 import 'package:immich_mobile/presentation/widgets/timeline/timeline_drag_region.dart';
 import 'package:immich_mobile/providers/infrastructure/readonly_mode.provider.dart';
 import 'package:immich_mobile/providers/infrastructure/settings.provider.dart';
@@ -29,6 +28,27 @@ import 'package:immich_mobile/widgets/common/immich_sliver_app_bar.dart';
 import 'package:immich_mobile/widgets/common/mesmerizing_sliver_app_bar.dart';
 import 'package:immich_mobile/widgets/common/selection_sliver_app_bar.dart';
 
+// First asset index of the row shown at [offset]. Pure for testing.
+@visibleForTesting
+int? assetIndexAtOffset(
+  List<Segment> segments,
+  double offset, {
+  required int columnCount,
+  required double maxScrollExtent,
+}) {
+  final clamped = offset.clamp(0.0, maxScrollExtent);
+  final segment = segments.findByOffset(clamped) ?? segments.lastOrNull;
+  if (segment == null) {
+    return null;
+  }
+  final rowIndex = segment.getMinChildIndexForScrollOffset(clamped);
+  if (rowIndex > segment.firstIndex) {
+    final rowIndexInSegment = rowIndex - (segment.firstIndex + 1);
+    return segment.firstAssetIndex + rowIndexInSegment * columnCount;
+  }
+  return segment.firstAssetIndex;
+}
+
 class Timeline extends StatelessWidget {
   const Timeline({
     super.key,
@@ -140,9 +160,10 @@ class _SliverTimelineState extends ConsumerState<_SliverTimeline> {
   StreamSubscription? _eventSubscription;
 
   // Drag selection state
+  static const _autoScrollStep = 175.0;
+  static const _autoScrollDuration = Duration(milliseconds: 125);
   bool _dragging = false;
-  TimelineAssetIndex? _dragAnchorIndex;
-  final Set<BaseAsset> _draggedAssets = HashSet();
+  DragSelectionController? _dragController;
   ScrollPhysics? _scrollPhysics;
 
   int _perRow = 4;
@@ -226,26 +247,18 @@ class _SliverTimelineState extends ConsumerState<_SliverTimeline> {
     EventStream.shared.emit(MultiSelectToggleEvent(isEnabled));
   }
 
-  int? _getCurrentAssetIndex(List<Segment> segments) {
-    final currentOffset = _scrollController.offset.clamp(0.0, _scrollController.position.maxScrollExtent);
-    final segment = segments.findByOffset(currentOffset) ?? segments.lastOrNull;
-    int? targetAssetIndex;
-    if (segment != null) {
-      final rowIndex = segment.getMinChildIndexForScrollOffset(currentOffset);
-      if (rowIndex > segment.firstIndex) {
-        final rowIndexInSegment = rowIndex - (segment.firstIndex + 1);
-        final assetsPerRow = ref.read(timelineArgsProvider).columnCount;
-        final assetIndexInSegment = rowIndexInSegment * assetsPerRow;
-        targetAssetIndex = segment.firstAssetIndex + assetIndexInSegment;
-      } else {
-        targetAssetIndex = segment.firstAssetIndex;
-      }
-    }
-    return targetAssetIndex;
-  }
+  int? _getCurrentAssetIndex(List<Segment> segments) => _assetIndexAtOffset(segments, _scrollController.offset);
+
+  int? _assetIndexAtOffset(List<Segment> segments, double offset) => assetIndexAtOffset(
+    segments,
+    offset,
+    columnCount: ref.read(timelineArgsProvider).columnCount,
+    maxScrollExtent: _scrollController.position.maxScrollExtent,
+  );
 
   @override
   void dispose() {
+    _dragController?.dispose();
     _scrollController.dispose();
     _eventSubscription?.cancel();
     super.dispose();
@@ -295,9 +308,21 @@ class _SliverTimelineState extends ConsumerState<_SliverTimeline> {
 
   // Drag selection methods
   void _setDragStartIndex(TimelineAssetIndex index) {
+    // Stop the old drag's controller so its in-flight read can't leak into this one.
+    _dragController?.dispose();
+    final timelineService = ref.read(timelineServiceProvider);
+    _dragController = DragSelectionController(
+      getAssetSafe: timelineService.getAssetSafe,
+      getAssetsRange: timelineService.getAssetsRange,
+      onChange: (select, deselect) {
+        if (!mounted) {
+          return;
+        }
+        ref.read(multiSelectProvider.notifier).selectRange(select, deselect);
+      },
+    )..start(index.assetIndex);
     setState(() {
       _scrollPhysics = const ClampingScrollPhysics();
-      _dragAnchorIndex = index;
       _dragging = true;
     });
   }
@@ -313,8 +338,12 @@ class _SliverTimelineState extends ConsumerState<_SliverTimeline> {
     });
     setState(() {
       _dragging = false;
-      _draggedAssets.clear();
     });
+    // Apply the full final range even if a read is still in flight on lift.
+    final finishing = _dragController?.end();
+    if (finishing != null) {
+      unawaited(finishing);
+    }
     final timelineState = ref.read(timelineStateProvider.notifier);
     Future.delayed(const Duration(milliseconds: 300), () {
       timelineState.setScrolling(false);
@@ -322,42 +351,33 @@ class _SliverTimelineState extends ConsumerState<_SliverTimeline> {
   }
 
   void _dragScroll(ScrollDirection direction) {
-    _scrollController.animateTo(
-      _scrollController.offset + (direction == ScrollDirection.forward ? 175 : -175),
-      duration: const Duration(milliseconds: 125),
-      curve: Curves.easeOut,
-    );
+    final position = _scrollController.position;
+    final step = direction == ScrollDirection.forward ? _autoScrollStep : -_autoScrollStep;
+    final target = (_scrollController.offset + step).clamp(0.0, position.maxScrollExtent);
+    _scrollController.animateTo(target, duration: _autoScrollDuration, curve: Curves.easeOut);
+
+    // A held finger emits no move events, so extend the selection to the asset
+    // at the leading edge of the scroll instead.
+    final controller = _dragController;
+    if (controller == null) {
+      return;
+    }
+    final segments = ref.read(timelineSegmentProvider).valueOrNull;
+    if (segments == null) {
+      return;
+    }
+    final edgeOffset = direction == ScrollDirection.forward ? target + position.viewportDimension : target;
+    final edgeIndex = _assetIndexAtOffset(segments, edgeOffset);
+    if (edgeIndex != null) {
+      controller.enter(edgeIndex);
+    }
   }
 
   void _handleDragAssetEnter(TimelineAssetIndex index) {
-    if (_dragAnchorIndex == null || !_dragging) {
+    if (!_dragging) {
       return;
     }
-
-    final timelineService = ref.read(timelineServiceProvider);
-    final dragAnchorIndex = _dragAnchorIndex!;
-
-    // Calculate the range of assets to select
-    final startIndex = math.min(dragAnchorIndex.assetIndex, index.assetIndex);
-    final endIndex = math.max(dragAnchorIndex.assetIndex, index.assetIndex);
-    final count = endIndex - startIndex + 1;
-
-    // Load the assets in the range
-    if (timelineService.hasRange(startIndex, count)) {
-      final selectedAssets = timelineService.getAssets(startIndex, count);
-
-      // Clear previous drag selection and add new range
-      final multiSelectNotifier = ref.read(multiSelectProvider.notifier);
-      for (final asset in _draggedAssets) {
-        multiSelectNotifier.deselectAsset(asset);
-      }
-      _draggedAssets.clear();
-
-      for (final asset in selectedAssets) {
-        multiSelectNotifier.selectAsset(asset);
-        _draggedAssets.add(asset);
-      }
-    }
+    _dragController?.enter(index.assetIndex);
   }
 
   @override

mobile/lib/providers/timeline/multiselect.provider.dart

@@ -97,6 +97,15 @@ class MultiSelectNotifier extends Notifier<MultiSelectState> {
     }
   }
 
+  // Drops the previous drag range and adds the new one in a single update. The
+  // full-set copy per drag tick is the accepted cost of immutable state.
+  void selectRange(Set<BaseAsset> toSelect, Set<BaseAsset> toDeselect) {
+    final selectedAssets = state.selectedAssets.toSet()
+      ..removeAll(toDeselect)
+      ..addAll(toSelect);
+    state = state.copyWith(selectedAssets: selectedAssets);
+  }
+
   void reset() {
     state = const MultiSelectState(selectedAssets: {}, lockedSelectionAssets: {}, forceEnable: false);
   }

mobile/pubspec.lock

@@ -912,13 +912,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.2.2"
-  immich_native_core:
-    dependency: "direct main"
-    description:
-      path: "../native/immich_native_core"
-      relative: true
-    source: path
-    version: "0.1.0"
   immich_ui:
     dependency: "direct main"
     description:
@@ -1131,14 +1124,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.19.1"
-  native_toolchain_rust:
-    dependency: transitive
-    description:
-      name: native_toolchain_rust
-      sha256: faa57d2258a3b0fd2a634054f54e4496c9fcbd971977e7d2b7e6916d56892857
-      url: "https://pub.dev"
-    source: hosted
-    version: "1.0.4+0"
   native_video_player:
     dependency: "direct main"
     description:
@@ -1770,14 +1755,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.9.4"
-  toml:
-    dependency: transitive
-    description:
-      name: toml
-      sha256: "35a35f782228656a2af31e8c73d1353cc4ef3d683fd68af1111b44631879c05e"
-      url: "https://pub.dev"
-    source: hosted
-    version: "0.18.0"
   typed_data:
     dependency: transitive
     description:

mobile/pubspec.yaml

@@ -39,8 +39,6 @@ dependencies:
   hooks_riverpod: ^2.6.1
   http: ^1.6.0
   image_picker: ^1.2.1
-  immich_native_core:
-    path: ../native/immich_native_core
   immich_ui:
     path: './packages/ui'
   intl: ^0.20.2

mobile/test/flutter_test_config.dart

@@ -1,13 +0,0 @@
-import 'dart:async';
-
-import 'package:easy_localization/easy_localization.dart';
-import 'package:flutter/foundation.dart';
-import 'package:logging/logging.dart';
-
-Future<void> testExecutable(FutureOr<void> Function() testMain) async {
-  Logger.root.level = Level.OFF;
-  EasyLocalization.logger.enableBuildModes = [];
-  // ignore: banned-usage
-  debugPrint = (String? message, {int? wrapWidth}) {};
-  return testMain();
-}

mobile/test/modules/map/map_theme_override_test.dart

@@ -1,4 +1,5 @@
 @Skip('Flaky test, needs investigation')
+@Tags(['widget'])
 library;
 
 import 'package:drift/drift.dart';

mobile/test/unit/mocks.dart

@@ -1,10 +1,7 @@
 import 'dart:typed_data';
 
 import 'package:immich_mobile/constants/enums.dart';
-import 'package:immich_mobile/domain/models/album/local_album.model.dart';
-import 'package:immich_mobile/domain/models/asset/base_asset.model.dart';
 import 'package:immich_mobile/domain/models/user.model.dart';
-import 'package:immich_mobile/platform/native_sync_api.g.dart';
 import 'package:mocktail/mocktail.dart' as mock;
 import 'package:mocktail/mocktail.dart';
 
@@ -15,11 +12,11 @@ import 'factories/local_asset_factory.dart';
 import 'factories/user_factory.dart';
 
 class RepositoryMocks {
-  final localAlbum = LocalAlbumRepositoryStub(MockLocalAlbumRepository());
-  final localAsset = LocalAssetRepositoryStub(MockDriftLocalAssetRepository());
+  final localAlbum = MockLocalAlbumRepository();
+  final localAsset = MockDriftLocalAssetRepository();
   final trashedAsset = MockTrashedLocalAssetRepository();
 
-  final nativeApi = NativeSyncApiStub(MockNativeSyncApi());
+  final nativeApi = MockNativeSyncApi();
 
   RepositoryMocks() {
     resetAll();
@@ -27,34 +24,17 @@ class RepositoryMocks {
 
   void resetAll() {
     _registerFallbacks();
-    localAlbum.reset();
-    localAsset.reset();
+    reset(localAlbum);
+    reset(localAsset);
     reset(trashedAsset);
-    nativeApi.reset();
-    _stubLocalAlbumRepository();
-    _stubLocalAssetRepository();
-    _stubNativeSyncApi();
-  }
-
-  void _stubLocalAlbumRepository() {
-    when(localAlbum.getBackupAlbums).thenAnswer((_) async => []);
-    when(localAlbum.getAssetsToHash).thenAnswer((_) async => []);
-  }
-
-  void _stubLocalAssetRepository() {
-    when(localAsset.reconcileHashesFromCloudId).thenAnswer((_) async => {});
-    when(localAsset.updateHashes).thenAnswer((_) async => {});
-  }
-
-  void _stubNativeSyncApi() {
-    when(nativeApi.hashAssets).thenAnswer((_) async => []);
+    reset(nativeApi);
   }
 }
 
 class ServiceMocks {
-  final partner = PartnerServiceStub(MockPartnerService());
-  final user = UserServiceStub(MockUserService());
-  final asset = AssetServiceStub(MockAssetService());
+  final PartnerStub partner = PartnerStub(MockPartnerService());
+  final UserStub user = UserStub(MockUserService());
+  final asset = AssetStub(MockAssetService());
 
   ServiceMocks() {
     resetAll();
@@ -98,28 +78,11 @@ void _registerFallbacks() {
   registerFallbackValue(Uint8List(0));
 }
 
-extension type const Stub<T extends Mock>(T mockedClass) {
-  void reset() => mock.reset(mockedClass);
+extension type const Stub<T extends Mock>(T mockedService) {
+  void reset() => mock.reset(mockedService);
 }
 
-extension type const LocalAlbumRepositoryStub(MockLocalAlbumRepository repo) implements Stub<MockLocalAlbumRepository> {
-  Future<List<LocalAlbum>> Function() get getBackupAlbums =>
-      () => repo.getBackupAlbums();
-
-  Future<List<LocalAsset>> Function() get getAssetsToHash =>
-      () => repo.getAssetsToHash(any());
-}
-
-extension type const LocalAssetRepositoryStub(MockDriftLocalAssetRepository repo)
-    implements Stub<MockDriftLocalAssetRepository> {
-  Future<void> Function() get reconcileHashesFromCloudId =>
-      () => repo.reconcileHashesFromCloudId();
-
-  Future<void> Function() get updateHashes =>
-      () => repo.updateHashes(any());
-}
-
-extension type const PartnerServiceStub(MockPartnerService service) implements Stub<MockPartnerService> {
+extension type const PartnerStub(MockPartnerService service) implements Stub<MockPartnerService> {
   Stream<Iterable<User>> Function() get getCandidates =>
       () => service.getCandidates(any());
 
@@ -147,7 +110,7 @@ extension type const PartnerServiceStub(MockPartnerService service) implements S
       );
 }
 
-extension type const UserServiceStub(MockUserService service) implements Stub<MockUserService> {
+extension type const UserStub(MockUserService service) implements Stub<MockUserService> {
   UserDto Function() get getMyUser =>
       () => service.getMyUser();
 
@@ -164,12 +127,7 @@ extension type const UserServiceStub(MockUserService service) implements Stub<Mo
       () => service.createProfileImage(any(), any());
 }
 
-extension type const AssetServiceStub(MockAssetService service) implements Stub<MockAssetService> {
+extension type const AssetStub(MockAssetService service) implements Stub<MockAssetService> {
   Future<void> Function() get updateFavorite =>
       () => service.updateFavorite(any(), any());
 }
-
-extension type const NativeSyncApiStub(MockNativeSyncApi api) implements Stub<MockNativeSyncApi> {
-  Future<List<HashResult>> Function() get hashAssets =>
-      () => api.hashAssets(any(), allowNetworkAccess: any(named: 'allowNetworkAccess'));
-}

mobile/test/unit/presentation/actions/asset_debug_action_test.dart

@@ -6,7 +6,7 @@ import 'package:immich_mobile/presentation/actions/asset_debug.action.dart';
 import 'package:immich_ui/immich_ui.dart';
 
 import '../../factories/remote_asset_factory.dart';
-import '../presentation_context.dart';
+import '../../presentation_context.dart';
 
 void main() {
   late PresentationContext context;
@@ -23,8 +23,8 @@ void main() {
   group('AssetDebugAction', () {
     testWidgets('visible for a single asset when advanced troubleshooting is on', (tester) async {
       await tester.pumpTestWidget(
-        context,
         ActionIconButtonWidget(action: AssetDebugAction(assets: [RemoteAssetFactory.create()])),
+        overrides: context.overrides,
       );
 
       expect(find.byType(ImmichIconButton), findsOneWidget);
@@ -32,10 +32,10 @@ void main() {
 
     testWidgets('hidden for multiple assets', (tester) async {
       await tester.pumpTestWidget(
-        context,
         ActionIconButtonWidget(
           action: AssetDebugAction(assets: [RemoteAssetFactory.create(), RemoteAssetFactory.create()]),
         ),
+        overrides: context.overrides,
       );
 
       expect(find.byType(ImmichIconButton), findsNothing);
@@ -44,8 +44,8 @@ void main() {
     testWidgets('hidden when advanced troubleshooting is off', (tester) async {
       await StoreService.I.put(StoreKey.advancedTroubleshooting, false);
       await tester.pumpTestWidget(
-        context,
         ActionIconButtonWidget(action: AssetDebugAction(assets: [RemoteAssetFactory.create()])),
+        overrides: context.overrides,
       );
 
       expect(find.byType(ImmichIconButton), findsNothing);

mobile/test/unit/presentation/actions/favorite_action_test.dart

@@ -1,26 +1,30 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:hooks_riverpod/hooks_riverpod.dart';
 import 'package:immich_mobile/domain/models/asset/base_asset.model.dart';
 import 'package:immich_mobile/presentation/actions/favorite.action.dart';
+import 'package:immich_mobile/providers/infrastructure/asset.provider.dart';
 import 'package:mocktail/mocktail.dart';
 
-import '../../../domain/service.mock.dart';
 import '../../factories/remote_asset_factory.dart';
-import '../presentation_context.dart';
+import '../../presentation_context.dart';
 
 void main() {
   late PresentationContext context;
-  late MockAssetService assetService;
 
   setUp(() async {
     context = await PresentationContext.create();
-    assetService = context.service.asset.service;
   });
 
   tearDown(() {
     context.dispose();
   });
 
+  List<Override> overrides() => [
+    ...context.overrides,
+    assetServiceProvider.overrideWithValue(context.mocks.asset.service),
+  ];
+
   RemoteAsset owned({bool isFavorite = false}) =>
       RemoteAssetFactory.create(ownerId: context.currentUser.id, isFavorite: isFavorite);
 
@@ -28,48 +32,48 @@ void main() {
     testWidgets('favorites the eligible owned assets', (tester) async {
       final asset = owned();
 
-      await tester.pumpTestAction(context, FavoriteAction(assets: [asset]));
+      await tester.pumpTestAction(FavoriteAction(assets: [asset]), overrides: overrides());
 
-      verify(() => assetService.updateFavorite([asset.id], true)).called(1);
+      verify(() => context.mocks.asset.service.updateFavorite([asset.id], true)).called(1);
     });
 
     testWidgets('unfavorite the eligible owned assets', (tester) async {
       final asset = owned(isFavorite: true);
 
-      await tester.pumpTestAction(context, FavoriteAction(assets: [asset]));
+      await tester.pumpTestAction(FavoriteAction(assets: [asset]), overrides: overrides());
 
-      verify(() => assetService.updateFavorite([asset.id], false)).called(1);
+      verify(() => context.mocks.asset.service.updateFavorite([asset.id], false)).called(1);
     });
 
     testWidgets('ignores assets owned by someone else', (tester) async {
       final mine = owned();
       final theirs = RemoteAssetFactory.create();
 
-      await tester.pumpTestAction(context, FavoriteAction(assets: [mine, theirs]));
+      await tester.pumpTestAction(FavoriteAction(assets: [mine, theirs]), overrides: overrides());
 
-      verify(() => assetService.updateFavorite([mine.id], true)).called(1);
+      verify(() => context.mocks.asset.service.updateFavorite([mine.id], true)).called(1);
     });
 
     testWidgets('batches every eligible owned asset into a single call', (tester) async {
       final first = owned();
       final second = owned();
 
-      await tester.pumpTestAction(context, FavoriteAction(assets: [first, second]));
+      await tester.pumpTestAction(FavoriteAction(assets: [first, second]), overrides: overrides());
 
-      verify(() => assetService.updateFavorite([first.id, second.id], true)).called(1);
+      verify(() => context.mocks.asset.service.updateFavorite([first.id, second.id], true)).called(1);
     });
 
     testWidgets('skips owned assets already in the target state', (tester) async {
       final stale = owned();
       final alreadyFavorite = owned(isFavorite: true);
 
-      await tester.pumpTestAction(context, FavoriteAction(assets: [stale, alreadyFavorite]));
+      await tester.pumpTestAction(FavoriteAction(assets: [stale, alreadyFavorite]), overrides: overrides());
 
-      verify(() => assetService.updateFavorite([stale.id], true)).called(1);
+      verify(() => context.mocks.asset.service.updateFavorite([stale.id], true)).called(1);
     });
 
     testWidgets('shows a confirmation snackbar on success', (tester) async {
-      await tester.pumpTestAction(context, FavoriteAction(assets: [owned()]));
+      await tester.pumpTestAction(FavoriteAction(assets: [owned()]), overrides: overrides());
       await tester.pumpUntilFound(find.byType(SnackBar));
 
       expect(find.byType(SnackBar), findsOneWidget);

mobile/test/unit/presentation/actions/partner_action_test.dart

@@ -4,19 +4,17 @@ import 'package:flutter_test/flutter_test.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
 import 'package:immich_mobile/domain/models/user.model.dart';
 import 'package:immich_mobile/presentation/actions/partner.action.dart';
+import 'package:immich_mobile/providers/infrastructure/user.provider.dart';
 import 'package:mocktail/mocktail.dart';
 
-import '../../../domain/service.mock.dart';
 import '../../factories/user_factory.dart';
-import '../presentation_context.dart';
+import '../../presentation_context.dart';
 
 void main() {
   late PresentationContext context;
-  late MockPartnerService partnerService;
 
   setUp(() async {
     context = await PresentationContext.create();
-    partnerService = context.service.partner.service;
   });
 
   tearDown(() {
@@ -24,6 +22,8 @@ void main() {
   });
 
   List<Override> overrides({List<User> candidates = const []}) => [
+    ...context.overrides,
+    partnerServiceProvider.overrideWithValue(context.mocks.partner.service),
     candidatesStateProvider.overrideWith((ref) => Stream<Iterable<User>>.value(candidates)),
   ];
 
@@ -31,24 +31,22 @@ void main() {
     testWidgets('creates a partner for the selected candidate', (tester) async {
       final candidate = UserFactory.create();
 
-      await tester.pumpTestAction(context, const PartnerAddAction(), overrides: overrides(candidates: [candidate]));
+      await tester.pumpTestAction(const PartnerAddAction(), overrides: overrides(candidates: [candidate]));
       await tester.pumpUntilFound(find.text(candidate.name));
       await tester.tap(find.text(candidate.name));
       await tester.pumpAndSettle();
 
-      verify(() => partnerService.create(sharedById: context.currentUser.id, sharedWithId: candidate.id)).called(1);
+      verify(
+        () => context.mocks.partner.service.create(sharedById: context.currentUser.id, sharedWithId: candidate.id),
+      ).called(1);
     });
 
     testWidgets('creates nothing when the selection dialog is dismissed', (tester) async {
-      await tester.pumpTestAction(
-        context,
-        const PartnerAddAction(),
-        overrides: overrides(candidates: [UserFactory.create()]),
-      );
+      await tester.pumpTestAction(const PartnerAddAction(), overrides: overrides(candidates: [UserFactory.create()]));
       await tester.sendKeyEvent(LogicalKeyboardKey.escape); // dismiss without selecting
       await tester.pumpAndSettle();
 
-      verifyNever(context.service.partner.create);
+      verifyNever(context.mocks.partner.create);
     });
   });
 
@@ -56,27 +54,27 @@ void main() {
     testWidgets('deletes the partner after confirmation', (tester) async {
       final partner = UserFactory.create();
       await tester.pumpTestAction(
-        context,
         PartnerRemoveAction(sharedWithId: partner.id, partnerName: partner.name),
         overrides: overrides(),
       );
       await tester.tap(find.byType(TextButton).last); // confirm
       await tester.pumpAndSettle();
 
-      verify(() => partnerService.delete(sharedById: context.currentUser.id, sharedWithId: partner.id)).called(1);
+      verify(
+        () => context.mocks.partner.service.delete(sharedById: context.currentUser.id, sharedWithId: partner.id),
+      ).called(1);
     });
 
     testWidgets('deletes nothing when the confirmation is cancelled', (tester) async {
       final partner = UserFactory.create();
       await tester.pumpTestAction(
-        context,
         PartnerRemoveAction(sharedWithId: partner.id, partnerName: partner.name),
         overrides: overrides(),
       );
       await tester.tap(find.byType(TextButton).first); // cancel
       await tester.pumpAndSettle();
 
-      verifyNever(context.service.partner.delete);
+      verifyNever(context.mocks.partner.delete);
     });
   });
 }

mobile/test/unit/presentation/actions/timeline_action_test.dart

@@ -7,7 +7,7 @@ import 'package:immich_mobile/presentation/actions/timeline.action.dart';
 import 'package:immich_mobile/providers/timeline/multiselect.provider.dart';
 
 import '../../factories/remote_asset_factory.dart';
-import '../presentation_context.dart';
+import '../../presentation_context.dart';
 
 class _FakeAction extends BaseAction {
   _FakeAction({this.visible = true, this.error});
@@ -48,7 +48,8 @@ void main() {
     context.dispose();
   });
 
-  List<Override> overrides() => [
+  List<Override> seededOverrides() => [
+    ...context.overrides,
     multiSelectProvider.overrideWith(
       () => MultiSelectNotifier(
         MultiSelectState(selectedAssets: {RemoteAssetFactory.create()}, lockedSelectionAssets: const {}),
@@ -60,7 +61,6 @@ void main() {
     late ActionScope scope;
     late ProviderContainer container;
     await tester.pumpTestWidget(
-      context,
       Consumer(
         builder: (innerContext, ref, _) {
           scope = ActionScope(context: innerContext, ref: ref, authUser: context.currentUser);
@@ -68,7 +68,7 @@ void main() {
           return const SizedBox.shrink();
         },
       ),
-      overrides: overrides(),
+      overrides: seededOverrides(),
     );
     return (scope, container);
   }
@@ -97,8 +97,8 @@ void main() {
 
     testWidgets('delegates visibility to the wrapped action', (tester) async {
       await tester.pumpTestWidget(
-        context,
         ActionIconButtonWidget(action: TimelineAction(action: _FakeAction(visible: false))),
+        overrides: context.overrides,
       );
 
       expect(find.byType(ActionIconButtonWidget), findsOneWidget);

mobile/test/unit/presentation/partner_page_test.dart

@@ -7,7 +7,7 @@ import 'package:immich_mobile/presentation/actions/partner.action.dart';
 
 import '../factories/partner_user_factory.dart';
 import '../factories/user_factory.dart';
-import 'presentation_context.dart';
+import '../presentation_context.dart';
 
 void main() {
   late PresentationContext context;
@@ -19,7 +19,7 @@ void main() {
     testWidgets('shows the empty-state add button when there are no partners', (tester) async {
       final action = const PartnerAddAction();
 
-      await tester.pumpTestWidget(context, const PartnerSharedByList(partners: []));
+      await tester.pumpTestWidget(const PartnerSharedByList(partners: []), overrides: context.overrides);
 
       expect(find.byType(ListView), findsNothing);
       expect(find.widgetWithIcon(TextButton, action.icon), findsOneWidget);
@@ -28,7 +28,8 @@ void main() {
     testWidgets('renders a tile per partner with name and email', (tester) async {
       final partner1 = PartnerFactory.create();
       final partner2 = PartnerFactory.create();
-      await tester.pumpTestWidget(context, PartnerSharedByList(partners: [partner1, partner2]));
+      await tester.pumpTestWidget(PartnerSharedByList(partners: [partner1, partner2]), overrides: context.overrides);
+
       expect(find.byType(ListTile), findsNWidgets(2));
       expect(find.text(partner1.name), findsOneWidget);
       expect(find.text(partner1.email), findsOneWidget);
@@ -40,7 +41,7 @@ void main() {
       final partner1 = PartnerFactory.create(inTimeline: true);
       final partner2 = PartnerFactory.create();
       final action = const PartnerRemoveAction(sharedWithId: '', partnerName: '');
-      await tester.pumpTestWidget(context, PartnerSharedByList(partners: [partner1, partner2]));
+      await tester.pumpTestWidget(PartnerSharedByList(partners: [partner1, partner2]), overrides: context.overrides);
       expect(find.byIcon(action.icon), findsNWidgets(2));
     });
   });
@@ -61,12 +62,13 @@ void main() {
     }
 
     List<Override> withCandidates(List<User> candidates) => [
+      ...context.overrides,
       candidatesStateProvider.overrideWith((ref) => Stream<Iterable<User>>.value(candidates)),
     ];
 
     testWidgets('renders an option per candidate fetched from the provider', (tester) async {
       final user = UserFactory.create();
-      await tester.pumpTestWidget(context, dialogWidget(), overrides: withCandidates([user]));
+      await tester.pumpTestWidget(dialogWidget(), overrides: withCandidates([user]));
 
       await tester.tap(find.byKey(dialogButtonKey));
       await tester.pumpAndSettle();
@@ -76,7 +78,7 @@ void main() {
     });
 
     testWidgets('shows no options when the provider returns no candidates', (tester) async {
-      await tester.pumpTestWidget(context, dialogWidget(), overrides: withCandidates(const []));
+      await tester.pumpTestWidget(dialogWidget(), overrides: withCandidates(const []));
 
       await tester.tap(find.byKey(dialogButtonKey));
       await tester.pumpAndSettle();
@@ -87,11 +89,7 @@ void main() {
     testWidgets('pops the selected candidate when an option is tapped', (tester) async {
       final user = UserFactory.create();
       User? selected;
-      await tester.pumpTestWidget(
-        context,
-        dialogWidget(onClosed: (user) => selected = user),
-        overrides: withCandidates([user]),
-      );
+      await tester.pumpTestWidget(dialogWidget(onClosed: (user) => selected = user), overrides: withCandidates([user]));
 
       await tester.tap(find.byKey(dialogButtonKey));
       await tester.pumpAndSettle();

mobile/test/unit/presentation/widgets/timeline/asset_index_at_offset_test.dart

@@ -0,0 +1,60 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:immich_mobile/domain/models/timeline.model.dart';
+import 'package:immich_mobile/presentation/widgets/timeline/fixed/segment.model.dart';
+import 'package:immich_mobile/presentation/widgets/timeline/segment.model.dart';
+import 'package:immich_mobile/presentation/widgets/timeline/timeline.widget.dart';
+
+void main() {
+  // Two day-segments, 4 columns, 8 assets each (2 rows). header 50, tile 100, no spacing.
+  //   A: header@[0,50)  rows@50,150   assets 0..7    offset [0,250]
+  //   B: header@[250,300) rows@300,400 assets 8..15  offset [250,500]
+  const columnCount = 4;
+  const maxScrollExtent = 500.0;
+  final segments = <Segment>[
+    const FixedSegment(
+      firstIndex: 0,
+      lastIndex: 2,
+      startOffset: 0,
+      endOffset: 250,
+      firstAssetIndex: 0,
+      bucket: Bucket(assetCount: 8),
+      tileHeight: 100,
+      columnCount: columnCount,
+      headerExtent: 50,
+      spacing: 0,
+      header: HeaderType.day,
+    ),
+    const FixedSegment(
+      firstIndex: 3,
+      lastIndex: 5,
+      startOffset: 250,
+      endOffset: 500,
+      firstAssetIndex: 8,
+      bucket: Bucket(assetCount: 8),
+      tileHeight: 100,
+      columnCount: columnCount,
+      headerExtent: 50,
+      spacing: 0,
+      header: HeaderType.day,
+    ),
+  ];
+
+  int? at(double offset) =>
+      assetIndexAtOffset(segments, offset, columnCount: columnCount, maxScrollExtent: maxScrollExtent);
+
+  test('maps an offset to the first asset of the row shown there', () {
+    expect(at(0), 0); // top of segment A
+    expect(at(150), 4); // second row of A
+    expect(at(350), 8); // first row of B
+    expect(at(450), 12); // second row of B
+  });
+
+  test('clamps offsets outside the scroll range', () {
+    expect(at(-100), 0); // below the top -> first asset
+    expect(at(9999), at(maxScrollExtent)); // past the end -> same as the max offset
+  });
+
+  test('returns null for empty segments', () {
+    expect(assetIndexAtOffset(const [], 100, columnCount: columnCount, maxScrollExtent: maxScrollExtent), isNull);
+  });
+}

mobile/test/unit/presentation/widgets/timeline/drag_selection_controller_test.dart

@@ -0,0 +1,157 @@
+import 'dart:async';
+
+import 'package:flutter_test/flutter_test.dart';
+import 'package:immich_mobile/domain/models/asset/base_asset.model.dart';
+import 'package:immich_mobile/presentation/widgets/timeline/drag_selection_controller.dart';
+
+import '../../../factories/remote_asset_factory.dart';
+
+void main() {
+  const total = 50;
+  late List<BaseAsset> all;
+  late Set<int> inBuffer; // indices getAssetSafe resolves synchronously
+  late List<Completer<List<BaseAsset>>> reads; // pending async reads, completed manually
+  late List<({int from, int count})> readArgs;
+  late Set<BaseAsset> selected;
+  late DragSelectionController sut;
+
+  Set<BaseAsset> range(int lo, int hi) => {for (var i = lo; i <= hi; i++) all[i]};
+
+  void completeRead(int i) {
+    final a = readArgs[i];
+    reads[i].complete([for (var k = a.from; k < a.from + a.count && k < total; k++) all[k]]);
+  }
+
+  Future<void> settle() => Future(() {});
+
+  setUp(() {
+    all = List.generate(total, (i) => RemoteAssetFactory.create(id: 'a${i.toString().padLeft(3, '0')}'));
+    inBuffer = {for (var i = 0; i < total; i++) i}; // default: everything buffered (sync)
+    reads = [];
+    readArgs = [];
+    selected = {};
+    sut = DragSelectionController(
+      getAssetSafe: (i) => inBuffer.contains(i) ? all[i] : null,
+      getAssetsRange: (from, count) {
+        final c = Completer<List<BaseAsset>>();
+        reads.add(c);
+        readArgs.add((from: from, count: count));
+        return c.future;
+      },
+      onChange: (select, deselect) {
+        selected
+          ..addAll(select)
+          ..removeAll(deselect);
+      },
+    );
+  });
+
+  group('live selection (all in buffer, synchronous)', () {
+    test('dragging down selects the whole range as it grows', () {
+      sut.start(2);
+      sut.enter(6);
+      sut.enter(12);
+      expect(selected, range(2, 12));
+      expect(reads, isEmpty, reason: 'everything buffered -> no async read');
+    });
+
+    test('dragging back up toward the anchor deselects the shrunk tail', () {
+      sut.start(2);
+      sut.enter(12);
+      expect(selected, range(2, 12));
+      sut.enter(6); // reverse
+      expect(selected, range(2, 6));
+      sut.enter(3); // reverse more
+      expect(selected, range(2, 3));
+    });
+
+    test('dragging past the anchor flips the range', () {
+      sut.start(10);
+      sut.enter(14);
+      expect(selected, range(10, 14));
+      sut.enter(7); // crosses the anchor
+      expect(selected, range(7, 10));
+    });
+  });
+
+  group('beyond-buffer (async)', () {
+    setUp(() => inBuffer = {}); // nothing buffered -> every tile needs an async read
+
+    test('drag-end fills the full range even if every live read is still in flight', () async {
+      sut.start(0);
+      sut.enter(20);
+      // simulate the real-rate race: none of the in-drag reads have completed
+      expect(selected, isEmpty);
+
+      final ending = sut.end();
+      // end() issues its own read for the missing range; complete it
+      completeRead(reads.length - 1);
+      await ending;
+
+      expect(selected, range(0, 20), reason: 'final range must always apply on drag-end');
+    });
+
+    test('out-of-order live read completions never corrupt the selection', () async {
+      sut.start(0); // issues read for [0,1]
+      sut.enter(10); // issues read for [0,11]
+      sut.enter(20); // issues read for [0,21]
+      expect(reads.length, 3);
+
+      // complete newest first, then older ones (out of order)
+      completeRead(2);
+      await settle();
+      completeRead(1);
+      await settle();
+      completeRead(0);
+      await settle();
+
+      expect(selected, range(0, 20));
+
+      final ending = sut.end();
+      await ending; // nothing missing -> no extra read
+      expect(selected, range(0, 20));
+    });
+
+    test('a disposed controller never emits when its in-flight read resolves', () async {
+      sut.start(0); // read [0,1] (pending, in flight)
+      sut.enter(20); // read [0,21] (pending, in flight)
+      expect(selected, isEmpty);
+
+      // a new drag starts -> the old controller is disposed
+      final ending = sut.end(); // issues end()'s fill read
+      sut.dispose();
+
+      // every in-flight read for the old controller now resolves
+      for (var i = 0; i < reads.length; i++) {
+        if (!reads[i].isCompleted) {
+          completeRead(i);
+        }
+      }
+      await ending;
+      await settle();
+
+      expect(selected, isEmpty, reason: 'a disposed controller must not leak into the new selection');
+    });
+
+    test('a late read for tiles dragged back out of range is ignored', () async {
+      sut.start(0); // read [0,1]
+      sut.enter(20); // read [0,21]
+      sut.enter(5); // shrink back; read [0,6]
+      // complete the stale wide read AFTER the shrink
+      completeRead(1); // [0,21]
+      await settle();
+      // indices 6..20 left the range -> must not be selected
+      expect(selected.intersection(range(6, 20)), isEmpty);
+
+      final ending = sut.end();
+      // complete any read end() issued for the (now smaller) missing range
+      for (var i = 0; i < reads.length; i++) {
+        if (!reads[i].isCompleted) {
+          completeRead(i);
+        }
+      }
+      await ending;
+      expect(selected, range(0, 5));
+    });
+  });
+}

mobile/test/unit/presentation_context.dart

@@ -13,21 +13,16 @@ import 'package:immich_mobile/infrastructure/repositories/db.repository.dart';
 import 'package:immich_mobile/infrastructure/repositories/store.repository.dart';
 import 'package:immich_mobile/presentation/actions/action.dart';
 import 'package:immich_mobile/presentation/actions/action.widget.dart';
-import 'package:immich_mobile/providers/infrastructure/asset.provider.dart';
-import 'package:immich_mobile/providers/infrastructure/user.provider.dart';
 import 'package:immich_mobile/providers/user.provider.dart';
 import 'package:immich_ui/immich_ui.dart';
 import 'package:mocktail/mocktail.dart';
 
-import '../../test_utils.dart';
-import '../factories/user_factory.dart';
-import '../mocks.dart';
+import '../test_utils.dart';
+import 'factories/user_factory.dart';
+import 'mocks.dart';
 
 class PresentationContext {
-  PresentationContext._({required UserDto user})
-    : currentUser = user,
-      service = ServiceMocks(),
-      repository = RepositoryMocks() {
+  PresentationContext._({required UserDto user}) : currentUser = user, mocks = ServiceMocks() {
     setup();
   }
 
@@ -36,14 +31,9 @@ class PresentationContext {
   static Drift? _db;
 
   final UserDto currentUser;
-  final ServiceMocks service;
-  final RepositoryMocks repository;
+  final ServiceMocks mocks;
 
-  List<Override> get overrides => [
-    currentUserProvider.overrideWith((ref) => CurrentUserProvider(service.user.service)),
-    assetServiceProvider.overrideWithValue(service.asset.service),
-    partnerServiceProvider.overrideWithValue(service.partner.service),
-  ];
+  List<Override> get overrides => [currentUserProvider.overrideWith((ref) => CurrentUserProvider(mocks.user.service))];
 
   static Future<PresentationContext> create() async {
     TestUtils.init();
@@ -57,18 +47,18 @@ class PresentationContext {
   }
 
   void setup() {
-    when(service.user.tryGetMyUser).thenReturn(currentUser);
+    when(mocks.user.tryGetMyUser).thenReturn(currentUser);
   }
 
   void dispose() {
     addTearDown(() {
-      service.resetAll();
+      mocks.resetAll();
     });
   }
 }
 
 extension PumpPresentationWidget on WidgetTester {
-  Future<void> pumpTestWidget(PresentationContext context, Widget widget, {List<Override> overrides = const []}) async {
+  Future<void> pumpTestWidget(Widget widget, {List<Override> overrides = const []}) async {
     await pumpWidget(
       EasyLocalization(
         supportedLocales: locales.values.toList(),
@@ -79,7 +69,7 @@ extension PumpPresentationWidget on WidgetTester {
         useFallbackTranslations: true,
         assetLoader: const CodegenLoader(),
         child: ProviderScope(
-          overrides: [...context.overrides, ...overrides],
+          overrides: overrides,
           child: Builder(
             builder: (context) => MaterialApp(
               debugShowCheckedModeBanner: false,
@@ -96,12 +86,8 @@ extension PumpPresentationWidget on WidgetTester {
     await pumpAndSettle();
   }
 
-  Future<void> pumpTestAction(
-    PresentationContext context,
-    BaseAction action, {
-    List<Override> overrides = const [],
-  }) async {
-    await pumpTestWidget(context, ActionIconButtonWidget(action: action), overrides: overrides);
+  Future<void> pumpTestAction(BaseAction action, {List<Override> overrides = const []}) async {
+    await pumpTestWidget(ActionIconButtonWidget(action: action), overrides: overrides);
     await tap(find.byType(ImmichIconButton));
     await pump();
   }

mobile/test/unit/services/hash_service_test.dart

@@ -14,11 +14,14 @@ void main() {
 
   setUp(() {
     sut = HashService(
-      localAlbumRepository: mocks.localAlbum.repo,
-      localAssetRepository: mocks.localAsset.repo,
-      nativeSyncApi: mocks.nativeApi.api,
+      localAlbumRepository: mocks.localAlbum,
+      localAssetRepository: mocks.localAsset,
+      nativeSyncApi: mocks.nativeApi,
       trashedLocalAssetRepository: mocks.trashedAsset,
     );
+
+    when(() => mocks.localAsset.reconcileHashesFromCloudId()).thenAnswer((_) async => {});
+    when(() => mocks.localAsset.updateHashes(any())).thenAnswer((_) async => {});
   });
 
   tearDown(() {
@@ -29,20 +32,22 @@ void main() {
     group('hashAssets', () {
       test('skips albums with no assets to hash', () async {
         final album = LocalAlbumFactory.create(assetCount: 0);
-        when(mocks.localAlbum.getBackupAlbums).thenAnswer((_) async => [album]);
+        when(() => mocks.localAlbum.getBackupAlbums()).thenAnswer((_) async => [album]);
+        when(() => mocks.localAlbum.getAssetsToHash(album.id)).thenAnswer((_) async => []);
 
         await sut.hashAssets();
 
-        verifyNever(mocks.nativeApi.hashAssets);
+        verifyNever(() => mocks.nativeApi.hashAssets(any(), allowNetworkAccess: any(named: 'allowNetworkAccess')));
       });
 
       test('skips empty batches', () async {
         final album = LocalAlbumFactory.create();
-        when(mocks.localAlbum.getBackupAlbums).thenAnswer((_) async => [album]);
+        when(() => mocks.localAlbum.getBackupAlbums()).thenAnswer((_) async => [album]);
+        when(() => mocks.localAlbum.getAssetsToHash(album.id)).thenAnswer((_) async => []);
 
         await sut.hashAssets();
 
-        verifyNever(mocks.nativeApi.hashAssets);
+        verifyNever(() => mocks.nativeApi.hashAssets(any(), allowNetworkAccess: any(named: 'allowNetworkAccess')));
       });
 
       test('processes assets when available', () async {
@@ -50,17 +55,15 @@ void main() {
         final asset = LocalAssetFactory.create();
         final result = HashResult(assetId: asset.id, hash: 'test-hash');
 
-        when(mocks.localAlbum.getBackupAlbums).thenAnswer((_) async => [album]);
-        when(() => mocks.localAlbum.repo.getAssetsToHash(album.id)).thenAnswer((_) async => [asset]);
-        when(
-          () => mocks.nativeApi.api.hashAssets([asset.id], allowNetworkAccess: false),
-        ).thenAnswer((_) async => [result]);
+        when(() => mocks.localAlbum.getBackupAlbums()).thenAnswer((_) async => [album]);
+        when(() => mocks.localAlbum.getAssetsToHash(album.id)).thenAnswer((_) async => [asset]);
+        when(() => mocks.nativeApi.hashAssets([asset.id], allowNetworkAccess: false)).thenAnswer((_) async => [result]);
 
         await sut.hashAssets();
 
-        verify(() => mocks.nativeApi.api.hashAssets([asset.id], allowNetworkAccess: false)).called(1);
+        verify(() => mocks.nativeApi.hashAssets([asset.id], allowNetworkAccess: false)).called(1);
         final captured =
-            verify(() => mocks.localAsset.repo.updateHashes(captureAny())).captured.first as Map<String, String>;
+            verify(() => mocks.localAsset.updateHashes(captureAny())).captured.first as Map<String, String>;
         expect(captured.length, 1);
         expect(captured[asset.id], result.hash);
       });
@@ -69,16 +72,16 @@ void main() {
         final album = LocalAlbumFactory.create();
         final asset = LocalAssetFactory.create();
 
-        when(mocks.localAlbum.getBackupAlbums).thenAnswer((_) async => [album]);
-        when(() => mocks.localAlbum.repo.getAssetsToHash(album.id)).thenAnswer((_) async => [asset]);
+        when(() => mocks.localAlbum.getBackupAlbums()).thenAnswer((_) async => [album]);
+        when(() => mocks.localAlbum.getAssetsToHash(album.id)).thenAnswer((_) async => [asset]);
         when(
-          () => mocks.nativeApi.api.hashAssets([asset.id], allowNetworkAccess: false),
+          () => mocks.nativeApi.hashAssets([asset.id], allowNetworkAccess: false),
         ).thenAnswer((_) async => [HashResult(assetId: asset.id, error: 'Failed to hash')]);
 
         await sut.hashAssets();
 
         final captured =
-            verify(() => mocks.localAsset.repo.updateHashes(captureAny())).captured.first as Map<String, String>;
+            verify(() => mocks.localAsset.updateHashes(captureAny())).captured.first as Map<String, String>;
         expect(captured.length, 0);
       });
 
@@ -86,25 +89,25 @@ void main() {
         final album = LocalAlbumFactory.create();
         final asset = LocalAssetFactory.create();
 
-        when(mocks.localAlbum.getBackupAlbums).thenAnswer((_) async => [album]);
-        when(() => mocks.localAlbum.repo.getAssetsToHash(album.id)).thenAnswer((_) async => [asset]);
+        when(() => mocks.localAlbum.getBackupAlbums()).thenAnswer((_) async => [album]);
+        when(() => mocks.localAlbum.getAssetsToHash(album.id)).thenAnswer((_) async => [asset]);
         when(
-          () => mocks.nativeApi.api.hashAssets([asset.id], allowNetworkAccess: false),
+          () => mocks.nativeApi.hashAssets([asset.id], allowNetworkAccess: false),
         ).thenAnswer((_) async => [HashResult(assetId: asset.id, hash: null)]);
 
         await sut.hashAssets();
 
         final captured =
-            verify(() => mocks.localAsset.repo.updateHashes(captureAny())).captured.first as Map<String, String>;
+            verify(() => mocks.localAsset.updateHashes(captureAny())).captured.first as Map<String, String>;
         expect(captured.length, 0);
       });
 
       test('batches by size limit', () async {
         const batchSize = 2;
         final sut = HashService(
-          localAlbumRepository: mocks.localAlbum.repo,
-          localAssetRepository: mocks.localAsset.repo,
-          nativeSyncApi: mocks.nativeApi.api,
+          localAlbumRepository: mocks.localAlbum,
+          localAssetRepository: mocks.localAsset,
+          nativeSyncApi: mocks.nativeApi,
           batchSize: batchSize,
           trashedLocalAssetRepository: mocks.trashedAsset,
         );
@@ -116,9 +119,12 @@ void main() {
 
         final capturedCalls = <List<String>>[];
 
-        when(mocks.localAlbum.getBackupAlbums).thenAnswer((_) async => [album]);
-        when(() => mocks.localAlbum.repo.getAssetsToHash(album.id)).thenAnswer((_) async => [asset1, asset2, asset3]);
-        when(mocks.nativeApi.hashAssets).thenAnswer((invocation) async {
+        when(() => mocks.localAsset.updateHashes(any())).thenAnswer((_) async => {});
+        when(() => mocks.localAlbum.getBackupAlbums()).thenAnswer((_) async => [album]);
+        when(() => mocks.localAlbum.getAssetsToHash(album.id)).thenAnswer((_) async => [asset1, asset2, asset3]);
+        when(() => mocks.nativeApi.hashAssets(any(), allowNetworkAccess: any(named: 'allowNetworkAccess'))).thenAnswer((
+          invocation,
+        ) async {
           final assetIds = invocation.positionalArguments[0] as List<String>;
           capturedCalls.add(List<String>.from(assetIds));
           return assetIds.map((id) => HashResult(assetId: id, hash: '$id-hash')).toList();
@@ -130,7 +136,7 @@ void main() {
         expect(capturedCalls[0], [asset1.id, asset2.id], reason: 'First call should batch the first two assets');
         expect(capturedCalls[1], [asset3.id], reason: 'Second call should have the remaining asset');
 
-        verify(() => mocks.localAsset.repo.updateHashes(any())).called(2);
+        verify(() => mocks.localAsset.updateHashes(any())).called(2);
       });
 
       test('handles mixed success and failure in batch', () async {
@@ -138,9 +144,9 @@ void main() {
         final asset1 = LocalAssetFactory.create();
         final asset2 = LocalAssetFactory.create();
 
-        when(mocks.localAlbum.getBackupAlbums).thenAnswer((_) async => [album]);
-        when(() => mocks.localAlbum.repo.getAssetsToHash(album.id)).thenAnswer((_) async => [asset1, asset2]);
-        when(() => mocks.nativeApi.api.hashAssets([asset1.id, asset2.id], allowNetworkAccess: false)).thenAnswer(
+        when(() => mocks.localAlbum.getBackupAlbums()).thenAnswer((_) async => [album]);
+        when(() => mocks.localAlbum.getAssetsToHash(album.id)).thenAnswer((_) async => [asset1, asset2]);
+        when(() => mocks.nativeApi.hashAssets([asset1.id, asset2.id], allowNetworkAccess: false)).thenAnswer(
           (_) async => [
             HashResult(assetId: asset1.id, hash: 'asset1-hash'),
             HashResult(assetId: asset2.id, error: 'Failed to hash asset2'),
@@ -150,7 +156,7 @@ void main() {
         await sut.hashAssets();
 
         final captured =
-            verify(() => mocks.localAsset.repo.updateHashes(captureAny())).captured.first as Map<String, String>;
+            verify(() => mocks.localAsset.updateHashes(captureAny())).captured.first as Map<String, String>;
         expect(captured.length, 1);
         expect(captured[asset1.id], 'asset1-hash');
       });
@@ -161,18 +167,20 @@ void main() {
         final asset1 = LocalAssetFactory.create();
         final asset2 = LocalAssetFactory.create();
 
-        when(mocks.localAlbum.getBackupAlbums).thenAnswer((_) async => [selectedAlbum, nonSelectedAlbum]);
-        when(() => mocks.localAlbum.repo.getAssetsToHash(selectedAlbum.id)).thenAnswer((_) async => [asset1]);
-        when(() => mocks.localAlbum.repo.getAssetsToHash(nonSelectedAlbum.id)).thenAnswer((_) async => [asset2]);
-        when(mocks.nativeApi.hashAssets).thenAnswer((invocation) async {
+        when(() => mocks.localAlbum.getBackupAlbums()).thenAnswer((_) async => [selectedAlbum, nonSelectedAlbum]);
+        when(() => mocks.localAlbum.getAssetsToHash(selectedAlbum.id)).thenAnswer((_) async => [asset1]);
+        when(() => mocks.localAlbum.getAssetsToHash(nonSelectedAlbum.id)).thenAnswer((_) async => [asset2]);
+        when(() => mocks.nativeApi.hashAssets(any(), allowNetworkAccess: any(named: 'allowNetworkAccess'))).thenAnswer((
+          invocation,
+        ) async {
           final assetIds = invocation.positionalArguments[0] as List<String>;
           return assetIds.map((id) => HashResult(assetId: id, hash: '$id-hash')).toList();
         });
 
         await sut.hashAssets();
 
-        verify(() => mocks.nativeApi.api.hashAssets([asset1.id], allowNetworkAccess: true)).called(1);
-        verify(() => mocks.nativeApi.api.hashAssets([asset2.id], allowNetworkAccess: false)).called(1);
+        verify(() => mocks.nativeApi.hashAssets([asset1.id], allowNetworkAccess: true)).called(1);
+        verify(() => mocks.nativeApi.hashAssets([asset2.id], allowNetworkAccess: false)).called(1);
       });
     });
   });

mobile/test/unit/services/timeline_service_test.dart

@@ -0,0 +1,100 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:immich_mobile/constants/constants.dart';
+import 'package:immich_mobile/domain/models/asset/base_asset.model.dart';
+import 'package:immich_mobile/domain/models/timeline.model.dart';
+import 'package:immich_mobile/domain/services/timeline.service.dart';
+
+import '../factories/remote_asset_factory.dart';
+
+void main() {
+  // total must exceed the sliding buffer so it cannot hold the whole library at once
+  const total = 2000;
+  late List<BaseAsset> all;
+  late TimelineService sut;
+
+  TimelineService buildService() {
+    all = List.generate(total, (i) => RemoteAssetFactory.create(id: 'a${i.toString().padLeft(5, '0')}'));
+    return TimelineService((
+      assetSource: (index, count) async {
+        final end = (index + count) > total ? total : index + count;
+        return all.sublist(index, end);
+      },
+      bucketSource: () => Stream.value([const Bucket(assetCount: total)]),
+      origin: TimelineOrigin.main,
+    ));
+  }
+
+  Future<void> settle() => Future.delayed(const Duration(milliseconds: 10));
+
+  setUp(() async {
+    sut = buildService();
+    await settle(); // let the bucket subscription load the first batch and set totalAssets
+  });
+
+  tearDown(() async {
+    await sut.dispose();
+  });
+
+  test('buffer holds the first batch but not the whole library', () {
+    expect(sut.totalAssets, total);
+    expect(sut.hasRange(0, kTimelineAssetLoadBatchSize), isTrue);
+    expect(sut.hasRange(0, total), isFalse);
+  });
+
+  // #27118 / #20855 mechanism: drag-selecting from a low anchor while the grid
+  // auto-scrolls down slides the buffer forward to follow the finger. once the
+  // buffer offset passes the anchor, hasRange(anchor, ...) is false and
+  // _handleDragAssetEnter silently stops extending the selection.
+  test('anchor drops out of the buffer after the grid scrolls down', () async {
+    const anchor = 5;
+    expect(sut.hasRange(anchor, 100), isTrue);
+
+    // the grid loads a far-down range as it auto-scrolls during the drag
+    await sut.loadAssets(1500, 1);
+
+    const current = 1500;
+    const count = current - anchor + 1;
+    expect(sut.hasRange(anchor, 1), isFalse, reason: 'anchor is now below the buffer offset');
+    expect(sut.hasRange(anchor, count), isFalse, reason: 'the full drag range is no longer resident');
+    expect(() => sut.getAssets(anchor, count), throwsRangeError);
+  });
+
+  // the fix: getAssetsRange returns the whole drag range regardless of the
+  // buffer position, so the selection keeps extending while scrolling.
+  group('getAssetsRange', () {
+    test('returns a buffered range', () async {
+      final assets = await sut.getAssetsRange(0, 50);
+      expect(assets.length, 50);
+      expect(assets.first, all[0]);
+      expect(assets.last, all[49]);
+    });
+
+    test('returns a range wider than the buffer', () async {
+      final assets = await sut.getAssetsRange(0, total);
+      expect(assets.length, total);
+      expect(assets.first, all[0]);
+      expect(assets.last, all[total - 1]);
+    });
+
+    test('returns the anchor range after the buffer scrolled past the anchor', () async {
+      const anchor = 5;
+      await sut.loadAssets(1500, 1); // buffer slides forward, dropping the anchor
+      expect(sut.hasRange(anchor, 1), isFalse);
+
+      const current = 1500;
+      const count = current - anchor + 1;
+      final assets = await sut.getAssetsRange(anchor, count);
+      expect(assets.length, count);
+      expect(assets.first, all[anchor]);
+      expect(assets.last, all[current]);
+    });
+
+    test('clamps a range that runs past the end and ignores invalid input', () async {
+      final tail = await sut.getAssetsRange(total - 10, 100);
+      expect(tail.length, 10);
+      expect(await sut.getAssetsRange(-1, 10), isEmpty);
+      expect(await sut.getAssetsRange(0, 0), isEmpty);
+      expect(await sut.getAssetsRange(total, 10), isEmpty);
+    });
+  });
+}

mobile/test/widget_tester_extensions.dart

@@ -1,51 +1,27 @@
-import 'package:easy_localization/easy_localization.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
-import 'package:immich_mobile/constants/locales.dart';
-import 'package:immich_mobile/generated/codegen_loader.g.dart';
 
 extension PumpConsumerWidget on WidgetTester {
-  /// Wraps the provided [widget] with a localized Material app such that it
-  /// becomes:
-  ///
-  /// EasyLocalization
-  ///   |-ProviderScope
-  ///     |-MaterialApp (localization delegates wired up)
-  ///       |-Material
-  ///         |-[widget]
+  /// Wraps the provided [widget] with Material app such that it becomes:
   ///
+  /// ProviderScope
+  ///   |-MaterialApp
+  ///     |-Material
+  ///       |-[widget]
   Future<void> pumpConsumerWidget(
     Widget widget, {
     Duration? duration,
     EnginePhase phase = EnginePhase.sendSemanticsUpdate,
     List<Override> overrides = const [],
   }) async {
-    await pumpWidget(
-      EasyLocalization(
-        supportedLocales: locales.values.toList(),
-        path: translationsPath,
-        startLocale: locales.values.first,
-        fallbackLocale: locales.values.first,
-        saveLocale: false,
-        useFallbackTranslations: true,
-        assetLoader: const CodegenLoader(),
-        child: ProviderScope(
-          overrides: overrides,
-          child: Builder(
-            builder: (context) => MaterialApp(
-              debugShowCheckedModeBanner: false,
-              localizationsDelegates: context.localizationDelegates,
-              supportedLocales: context.supportedLocales,
-              locale: context.locale,
-              home: Material(child: widget),
-            ),
-          ),
-        ),
+    return pumpWidget(
+      ProviderScope(
+        overrides: overrides,
+        child: MaterialApp(debugShowCheckedModeBanner: false, home: Material(child: widget)),
       ),
       duration: duration,
       phase: phase,
     );
-    await pumpAndSettle();
   }
 }

native/.gitignore

@@ -1,5 +0,0 @@
-/target
-smoke/*.node
-# generated + committed (regen via `mise run codegen`):
-#   crates/immich_core_dart/include/immich_core.h                     (cbindgen)
-#   immich_native_core/lib/immich_native_core_bindings_generated.dart (ffigen)

native/Cargo.lock

@@ -1,619 +0,0 @@
-# This file is automatically @generated by Cargo.
-# It is not intended for manual editing.
-version = 4
-
-[[package]]
-name = "bitflags"
-version = "2.13.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b4388bee8683e3d04af747c73422af53102d2bd24d9eadb6cbc100baef4b43f8"
-
-[[package]]
-name = "block-buffer"
-version = "0.12.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d2f6c7dbe95a6ed67ad9f18e57daf93a2f034c524b99fd2b76d18fdfeb6660aa"
-dependencies = [
- "hybrid-array",
-]
-
-[[package]]
-name = "cbindgen"
-version = "0.29.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2ecb53484c9c167ba674026b656d8a27d7657a58e6066aa902bfb1a4aa00ae20"
-dependencies = [
- "heck",
- "indexmap",
- "log",
- "proc-macro2",
- "quote",
- "serde",
- "serde_json",
- "syn",
- "tempfile",
- "toml",
-]
-
-[[package]]
-name = "cfg-if"
-version = "1.0.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
-
-[[package]]
-name = "convert_case"
-version = "0.11.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "affbf0190ed2caf063e3def54ff444b449371d55c58e513a95ab98eca50adb49"
-dependencies = [
- "unicode-segmentation",
-]
-
-[[package]]
-name = "cpufeatures"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8b2a41393f66f16b0823bb79094d54ac5fbd34ab292ddafb9a0456ac9f87d201"
-dependencies = [
- "libc",
-]
-
-[[package]]
-name = "crypto-common"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ce6e4c961d6cd6c9a86db418387425e8bdeaf05b3c8bc1411e6dca4c252f1453"
-dependencies = [
- "hybrid-array",
-]
-
-[[package]]
-name = "ctor"
-version = "1.0.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "01334b89b69ff726750c5ce5073fc8bd860e99aa9a8fc5ca11b04730e3aee97a"
-
-[[package]]
-name = "digest"
-version = "0.11.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f1dd6dbb5841937940781866fa1281a1ff7bd3bf827091440879f9994983d5c2"
-dependencies = [
- "block-buffer",
- "crypto-common",
-]
-
-[[package]]
-name = "equivalent"
-version = "1.0.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "877a4ace8713b0bcf2a4e7eec82529c029f1d0619886d18145fea96c3ffe5c0f"
-
-[[package]]
-name = "errno"
-version = "0.3.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "39cab71617ae0d63f51a36d69f866391735b51691dbda63cf6f96d042b63efeb"
-dependencies = [
- "libc",
- "windows-sys",
-]
-
-[[package]]
-name = "fastrand"
-version = "2.4.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9f1f227452a390804cdb637b74a86990f2a7d7ba4b7d5693aac9b4dd6defd8d6"
-
-[[package]]
-name = "futures"
-version = "0.3.32"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8b147ee9d1f6d097cef9ce628cd2ee62288d963e16fb287bd9286455b241382d"
-dependencies = [
- "futures-channel",
- "futures-core",
- "futures-executor",
- "futures-io",
- "futures-sink",
- "futures-task",
- "futures-util",
-]
-
-[[package]]
-name = "futures-channel"
-version = "0.3.32"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "07bbe89c50d7a535e539b8c17bc0b49bdb77747034daa8087407d655f3f7cc1d"
-dependencies = [
- "futures-core",
- "futures-sink",
-]
-
-[[package]]
-name = "futures-core"
-version = "0.3.32"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7e3450815272ef58cec6d564423f6e755e25379b217b0bc688e295ba24df6b1d"
-
-[[package]]
-name = "futures-executor"
-version = "0.3.32"
-source = "registry+https://github.com/rust-lang/crates.io-index"
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native/Cargo.toml

@@ -1,44 +0,0 @@
-[workspace]
-resolver = "2"
-members = [
-    "crates/immich_core",
-    "crates/immich_core_dart",
-    "crates/immich_core_napi",
-]
-
-# shared logic lives in immich_core (no binding deps). each binding crate is a
-# thin wrapper that picks its own crate-type: immich_core_dart -> cdylib/staticlib
-# for dart:ffi (mobile), immich_core_napi -> cdylib (.node) for the node server.
-# capabilities (hashing, exif, ...) are cargo features on immich_core so both
-# bindings opt into the same set. crate-type can't be feature-gated, which is why
-# the bindings are separate crates rather than one crate with feature flags.
-
-[workspace.package]
-version = "0.1.0"
-edition = "2021"
-license = "AGPL-3.0-only"
-
-# single source of truth for all external dep versions. inner crates reference
-# these with `{ workspace = true }` and never hardcode a version.
-# default-features = false MUST live here (workspace level) — cargo ignores it if
-# set only on the inner crate. inner crates then add the minimal features they need.
-[workspace.dependencies]
-sha1 = { version = "0.11", default-features = false }
-memmap2 = { version = "0.9", default-features = false }
-napi = { version = "3", default-features = false }
-napi-derive = "3"
-napi-build = "2"
-cbindgen = { version = "0.29", default-features = false }
-
-# CI-enforced (not review-hoped): the boundary crate also #![deny]s unwrap/expect.
-[workspace.lints.clippy]
-undocumented_unsafe_blocks = "deny"
-
-# NB: no `panic = "abort"` — the FFI boundary relies on catch_unwind, which is a
-# no-op under abort. default unwind is what lets a boundary panic become a null
-# return instead of taking down the host (Flutter app / node server).
-[profile.release]
-opt-level = 3
-lto = true
-codegen-units = 1
-strip = true

native/README.md

@@ -1,61 +0,0 @@
-# immich_native_core (PoC)
-
-Shared Rust core consumed by the **mobile** app (Flutter, dart:ffi) and the
-**server** (Node, napi `.node` addon).
-
-Status: **plumbing PoC.** It proves the wiring — Rust → codegen → build-from-source
-on each app build → load on both platforms — not a perf win yet. The one capability
-(`sha1_hex`) is single-shot in-memory, and the local-sync probe found hashing isn't
-the hot path; a measured payload is the next step. `core_version` is a smoke
-entrypoint. Mobile is the consumed path; the server napi crate builds and
-round-trips but is not wired into the server yet.
-
-## Layout
-```
-crates/
-  immich_core        pure logic, no binding deps. capabilities = cargo features (hashing).
-  immich_core_dart   cdylib/staticlib + cbindgen header for dart:ffi (mobile)
-  immich_core_napi   cdylib (.node) via napi-rs (server, unwired)
-immich_native_core/  the Flutter package mobile depends on. build hook + ffigen @Native bindings.
-smoke/               host dart + node roundtrip scripts (no device)
-```
-Bindings are separate crates (Cargo can't gate `crate-type` by feature).
-
-## How the native lib is built (Flutter native assets — no prebuilt, no CI)
-`immich_native_core/hook/build.dart` (`native_toolchain_rust`) compiles
-`crates/immich_core_dart` **from source on every app build** via rustup and bundles
-it as a Flutter *code asset*. The Dart side uses ffigen `@Native` externals bound to
-that asset — no `DynamicLibrary`, no prebuilt artifacts, no fetch/publish/separate-repo.
-
-Native assets is on by default on Flutter stable (3.38+), so a stock `flutter build`
-runs the hook. Each builder needs **rustup** (the hook auto-installs the pinned
-toolchain + targets from `crates/immich_core_dart/rust-toolchain.toml`).
-
-## Dev commands (mise)
-```
-mise run build         cargo build --workspace
-mise run test          cargo test --workspace     (host Rust tests, incl. FFI-boundary)
-mise run lint          clippy -D warnings         (fmt: mise run fmt)
-mise run codegen       regen cbindgen header + ffigen @Native bindings — commit the result
-mise run test:flutter  HOST FFI roundtrip through the real build hook (no device)
-mise run smoke         Rust tests + host dart:ffi + host napi roundtrips
-```
-
-## Add a capability (end to end)
-1. add the logic to `crates/immich_core` (behind a cargo feature if it pulls a dep).
-2. expose a C entry in `crates/immich_core_dart/src/lib.rs` — `#[no_mangle] pub extern "C"`,
-   wrap the body in `guard(...)` (panic at the boundary → null, never unwind into the host),
-   validate pointers, return Rust-owned memory the caller frees via `immich_core_free_string`.
-3. `mise run codegen` — regenerates the committed cbindgen header + ffigen `@Native` bindings.
-4. add an ergonomic wrapper + null-check in `immich_native_core/lib/immich_native_core.dart`.
-5. (optional) mirror it in `crates/immich_core_napi/src/lib.rs` for the server.
-6. `mise run test:flutter` (host) + add a case to `immich_native_core/test/`, and to
-   `mobile/integration_test/native_core_test.dart` to exercise it on a device.
-
-## Consume from immich/mobile
-`immich_native_core: { path: ../native/immich_native_core }` in `mobile/pubspec.yaml`,
-then `dart pub get`. No app-level Gradle/Podfile edits — the hook builds + bundles the
-lib. Builders need rustup. See the package README for the iOS App-Extension caveat.
-
-`/native/` is codeowned by @santoshakil + @mertalev. License: reuses the immich
-repo-root AGPL-3.0 (no separate license file).

native/crates/immich_core/Cargo.toml

@@ -1,17 +0,0 @@
-[package]
-name = "immich_core"
-version.workspace = true
-edition.workspace = true
-license.workspace = true
-
-[features]
-default = ["hashing", "image"]
-hashing = ["dep:sha1", "dep:memmap2"]
-image = [] # pure pixel math, no deps
-
-[dependencies]
-sha1 = { workspace = true, optional = true }
-memmap2 = { workspace = true, optional = true }
-
-[lints]
-workspace = true

native/crates/immich_core/src/hashing.rs

@@ -1,75 +0,0 @@
-//! SHA-1 hashing. SHA-1 is immich's asset-identity checksum (server contract):
-//! the algorithm is fixed. The win is in HOW it's computed — `sha1_file` mmaps the
-//! file and feeds the OS-paged bytes straight to a hardware-accelerated digest, so
-//! the whole file never lands in the caller's heap and there's no read+copy hop.
-
-use sha1::{Digest, Sha1};
-use std::fmt::Write;
-use std::fs::File;
-use std::io;
-use std::path::Path;
-
-/// Lowercase-hex SHA-1 of a byte slice.
-pub fn sha1_hex(bytes: &[u8]) -> String {
-    let digest = Sha1::digest(bytes);
-    let mut out = String::with_capacity(40);
-    for b in digest {
-        let _ = write!(out, "{b:02x}");
-    }
-    out
-}
-
-/// Lowercase-hex SHA-1 of the file at `path`, read via mmap. The OS pages the file
-/// in on demand, so memory stays bounded regardless of file size — no full read
-/// into a buffer, no copy.
-pub fn sha1_file(path: impl AsRef<Path>) -> io::Result<String> {
-    let file = File::open(path)?;
-    if file.metadata()?.len() == 0 {
-        return Ok(sha1_hex(&[]));
-    }
-    // SAFETY: the file is opened read-only and the mapping is read as immutable
-    // bytes for the duration of the hash. immich assets are not mutated in place;
-    // a concurrent truncation could SIGBUS, which is the documented mmap trade-off.
-    let mmap = unsafe { memmap2::Mmap::map(&file)? };
-    Ok(sha1_hex(&mmap))
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn sha1_known_vector() {
-        // FIPS-180 worked example.
-        assert_eq!(sha1_hex(b"abc"), "a9993e364706816aba3e25717850c26c9cd0d89d");
-    }
-
-    #[test]
-    fn sha1_empty() {
-        assert_eq!(sha1_hex(b""), "da39a3ee5e6b4b0d3255bfef95601890afd80709");
-    }
-
-    #[test]
-    fn sha1_file_matches_in_memory() {
-        let dir = std::env::temp_dir();
-        let path = dir.join(format!("immich_core_sha1_file_{}.bin", std::process::id()));
-        let data: Vec<u8> = (0..100_000u32).map(|i| (i % 251) as u8).collect();
-        std::fs::write(&path, &data).unwrap();
-        assert_eq!(sha1_file(&path).unwrap(), sha1_hex(&data));
-        std::fs::remove_file(&path).ok();
-    }
-
-    #[test]
-    fn sha1_file_empty() {
-        let path =
-            std::env::temp_dir().join(format!("immich_core_empty_{}.bin", std::process::id()));
-        std::fs::write(&path, b"").unwrap();
-        assert_eq!(sha1_file(&path).unwrap(), sha1_hex(b""));
-        std::fs::remove_file(&path).ok();
-    }
-
-    #[test]
-    fn sha1_file_missing_errors() {
-        assert!(sha1_file("/no/such/immich_core/file").is_err());
-    }
-}

native/crates/immich_core/src/image.rs

@@ -1,173 +0,0 @@
-//! EXIF-orientation rotation of RGBA8888 pixel buffers, ported from the Android
-//! native_image.c (immich PR #29337). Lives here so the perf-critical pixel math
-//! exists once, tested, callable from any platform's decode pipeline (Android RAW
-//! today; the algorithm is platform-agnostic). The platform side keeps the bitmap
-//! lock + output allocation and calls this to fill the destination buffer.
-
-// EXIF orientation values (androidx ExifInterface.ORIENTATION_*).
-const FLIP_HORIZONTAL: i32 = 2;
-const ROTATE_180: i32 = 3;
-const FLIP_VERTICAL: i32 = 4;
-const TRANSPOSE: i32 = 5;
-const ROTATE_90: i32 = 6;
-const TRANSVERSE: i32 = 7;
-const ROTATE_270: i32 = 8;
-
-// 32x32 u32 tile = 4KB, L1-resident so a 90/270 transpose's scattered writes stay hot.
-const TILE: usize = 32;
-
-/// Whether the orientation swaps width and height (the 90/270 + transpose family).
-pub fn swaps_dims(orientation: i32) -> bool {
-    matches!(orientation, ROTATE_90 | ROTATE_270 | TRANSPOSE | TRANSVERSE)
-}
-
-// (base, step_x, step_y): src pixel (sx,sy) maps to dst pixel index
-// base + sx*step_x + sy*step_y for a destination of width `dw`. Mirrors
-// native_image.c affine_for byte-for-byte. i64 so the math stays correct on 32-bit.
-fn affine_for(o: i32, sw: i64, sh: i64, dw: i64) -> (i64, i64, i64) {
-    match o {
-        ROTATE_90 => (sh - 1, dw, -1),
-        ROTATE_270 => ((sw - 1) * dw, -dw, 1),
-        ROTATE_180 => ((sh - 1) * dw + (sw - 1), -1, -dw),
-        FLIP_HORIZONTAL => (sw - 1, -1, dw),
-        FLIP_VERTICAL => ((sh - 1) * dw, 1, -dw),
-        TRANSPOSE => (0, dw, 1),
-        TRANSVERSE => ((sw - 1) * dw + (sh - 1), -dw, -1),
-        _ => (0, 1, dw),
-    }
-}
-
-/// Rotate `src` (RGBA8888, `sh` rows of `src_stride` bytes, `sw` pixels per row) into
-/// `dst` (densely packed, `dw*dh*4` bytes) for the given EXIF orientation, where
-/// (dw,dh) swap for the 90/270/transpose family. Returns `false` without touching
-/// out-of-range memory if the sizes are inconsistent, so the caller can fall back.
-/// Indexing is bounds-checked: a bad input fails safe (panic caught at the FFI
-/// boundary / false here), never an out-of-bounds write like the raw C.
-pub fn rotate_rgba8888(
-    src: &[u8],
-    src_stride: usize,
-    sw: usize,
-    sh: usize,
-    orientation: i32,
-    dst: &mut [u8],
-) -> bool {
-    if sw == 0 || sh == 0 || src_stride < sw * 4 {
-        return false;
-    }
-    let dw = if swaps_dims(orientation) { sh } else { sw };
-    let dh = if swaps_dims(orientation) { sw } else { sh };
-    if src.len() < src_stride * sh || dst.len() < dw * dh * 4 {
-        return false;
-    }
-    let (base, step_x, step_y) = affine_for(orientation, sw as i64, sh as i64, dw as i64);
-    for ty in (0..sh).step_by(TILE) {
-        let y_end = (ty + TILE).min(sh);
-        for tx in (0..sw).step_by(TILE) {
-            let x_end = (tx + TILE).min(sw);
-            for sy in ty..y_end {
-                let row = sy * src_stride;
-                let mut idx = base + sy as i64 * step_y + tx as i64 * step_x;
-                for sx in tx..x_end {
-                    let s = row + sx * 4;
-                    let d = idx as usize * 4;
-                    dst[d..d + 4].copy_from_slice(&src[s..s + 4]);
-                    idx += step_x;
-                }
-            }
-        }
-    }
-    true
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    // Independent textbook EXIF transform: src(sx,sy) -> dst(dx,dy). Verifies the
-    // affine port against orientation *semantics*, not against itself.
-    fn ref_dst_xy(o: i32, sx: usize, sy: usize, sw: usize, sh: usize) -> (usize, usize) {
-        match o {
-            FLIP_HORIZONTAL => (sw - 1 - sx, sy),
-            ROTATE_180 => (sw - 1 - sx, sh - 1 - sy),
-            FLIP_VERTICAL => (sx, sh - 1 - sy),
-            TRANSPOSE => (sy, sx),
-            ROTATE_90 => (sh - 1 - sy, sx),
-            TRANSVERSE => (sh - 1 - sy, sw - 1 - sx),
-            ROTATE_270 => (sy, sw - 1 - sx),
-            _ => (sx, sy),
-        }
-    }
-
-    fn pixel(i: usize) -> [u8; 4] {
-        [
-            (i & 0xff) as u8,
-            ((i >> 8) & 0xff) as u8,
-            ((i >> 16) & 0xff) as u8,
-            0xff,
-        ]
-    }
-
-    fn check(o: i32, sw: usize, sh: usize) {
-        let mut src = vec![0u8; sw * sh * 4];
-        for sy in 0..sh {
-            for sx in 0..sw {
-                let i = sy * sw + sx;
-                src[i * 4..i * 4 + 4].copy_from_slice(&pixel(i));
-            }
-        }
-        let (dw, dh) = if swaps_dims(o) { (sh, sw) } else { (sw, sh) };
-        let mut dst = vec![0u8; dw * dh * 4];
-        assert!(rotate_rgba8888(&src, sw * 4, sw, sh, o, &mut dst));
-        for sy in 0..sh {
-            for sx in 0..sw {
-                let (dx, dy) = ref_dst_xy(o, sx, sy, sw, sh);
-                let di = dy * dw + dx;
-                let si = sy * sw + sx;
-                assert_eq!(&dst[di * 4..di * 4 + 4], &pixel(si), "o={o} src({sx},{sy})");
-            }
-        }
-    }
-
-    #[test]
-    fn all_orientations_match_exif_reference() {
-        for o in [1, 2, 3, 4, 5, 6, 7, 8] {
-            check(o, 4, 3);
-            check(o, 1, 5);
-            check(o, 5, 1);
-            check(o, 40, 33); // spans multiple tiles
-        }
-    }
-
-    #[test]
-    fn identity_for_normal_orientation() {
-        let src: Vec<u8> = (0..24u8).collect(); // 2x3 RGBA
-        let mut dst = vec![0u8; 24];
-        assert!(rotate_rgba8888(&src, 8, 2, 3, 1, &mut dst));
-        assert_eq!(src, dst);
-    }
-
-    #[test]
-    fn respects_src_stride_padding() {
-        let (sw, sh, stride) = (2usize, 2usize, 12usize); // 4 bytes row padding
-        let mut src = vec![0u8; stride * sh];
-        for sy in 0..sh {
-            for sx in 0..sw {
-                let i = sy * sw + sx;
-                src[sy * stride + sx * 4..sy * stride + sx * 4 + 4].copy_from_slice(&pixel(i));
-            }
-        }
-        let mut dst = vec![0u8; sw * sh * 4];
-        assert!(rotate_rgba8888(&src, stride, sw, sh, ROTATE_180, &mut dst));
-        for i in 0..4 {
-            assert_eq!(&dst[i * 4..i * 4 + 4], &pixel(3 - i)); // 180: i -> N-1-i
-        }
-    }
-
-    #[test]
-    fn rejects_bad_sizes() {
-        let src = vec![0u8; 16];
-        let mut small = vec![0u8; 4];
-        assert!(!rotate_rgba8888(&src, 8, 2, 2, ROTATE_90, &mut small)); // dst too small
-        assert!(!rotate_rgba8888(&src, 4, 2, 2, 1, &mut small)); // stride < sw*4
-    }
-}

native/crates/immich_core/src/lib.rs

@@ -1,26 +0,0 @@
-//! immich_native_core — shared Rust core for the immich server (napi) and mobile (dart:ffi).
-//!
-//! Pure logic only: no binding or platform deps live here. Each binding crate
-//! (`immich_core_dart`, `immich_core_napi`) is a thin wrapper. Capabilities are
-//! cargo features (`hashing`, `image`, ...) so every binding opts into the same set.
-
-#[cfg(feature = "hashing")]
-pub mod hashing;
-
-#[cfg(feature = "image")]
-pub mod image;
-
-/// Version of the native core. Smoke-test entrypoint exercised by every binding.
-pub fn core_version() -> &'static str {
-    env!("CARGO_PKG_VERSION")
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn version_is_present() {
-        assert!(!core_version().is_empty());
-    }
-}

native/crates/immich_core_dart/Cargo.toml

@@ -1,21 +0,0 @@
-[package]
-name = "immich_core_dart"
-version.workspace = true
-edition.workspace = true
-license.workspace = true
-
-# native_toolchain_rust requires cdylib (the bundled lib) + staticlib (iOS). It
-# derives the artifact name from [package].name, so no [lib] name override here.
-[lib]
-crate-type = ["cdylib", "staticlib"]
-
-# hashing (SHA-1 asset identity) is the reason this lib exists — always on, so the
-# cbindgen header + ffigen bindings always match the exported symbols.
-[dependencies]
-immich_core = { path = "../immich_core", default-features = false, features = ["hashing", "image"] }
-
-[build-dependencies]
-cbindgen = { workspace = true }
-
-[lints]
-workspace = true

native/crates/immich_core_dart/build.rs

@@ -1,19 +0,0 @@
-use std::path::Path;
-
-fn main() {
-    println!("cargo:rerun-if-changed=src/lib.rs");
-    println!("cargo:rerun-if-changed=cbindgen.toml");
-
-    let crate_dir = std::env::var("CARGO_MANIFEST_DIR").unwrap();
-    let out = Path::new(&crate_dir).join("include").join("immich_core.h");
-    std::fs::create_dir_all(out.parent().unwrap()).ok();
-
-    // Hard-fail, not a warning: the CI drift gate diffs this header, so a silent
-    // codegen failure would let a stale header sail through green.
-    match cbindgen::generate(&crate_dir) {
-        Ok(bindings) => {
-            bindings.write_to_file(&out);
-        }
-        Err(e) => panic!("cbindgen failed: {e}"),
-    }
-}

native/crates/immich_core_dart/cbindgen.toml

@@ -1,3 +0,0 @@
-language = "C"
-pragma_once = true
-autogen_warning = "// Generated by cbindgen — do not edit."

native/crates/immich_core_dart/include/immich_core.h

@@ -1,60 +0,0 @@
-#pragma once
-
-// Generated by cbindgen — do not edit.
-
-#include <stdarg.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdlib.h>
-
-/**
- * Native core version as a NUL-terminated UTF-8 string.
- * Free the result with [`immich_core_free_string`].
- */
-char *immich_core_version(void);
-
-/**
- * SHA-1 (lowercase hex) of `len` bytes at `ptr`. Returns NULL on a null pointer.
- * Free the result with [`immich_core_free_string`].
- *
- * # Safety
- * `ptr` must be valid for reads of `len` bytes.
- */
-char *immich_core_sha1_hex(const unsigned char *ptr, uintptr_t len);
-
-/**
- * SHA-1 (lowercase hex) of the file at `path` (NUL-terminated UTF-8), read via
- * mmap — no Dart-side read or copy. Returns NULL on a null path, non-UTF-8 path,
- * or any IO error. Free the result with [`immich_core_free_string`].
- *
- * # Safety
- * `path` must be a valid NUL-terminated C string, or null.
- */
-char *immich_core_sha1_file(const char *path);
-
-/**
- * Rotate an RGBA8888 image to the given EXIF `orientation`. `src` is `sh` rows of
- * `src_stride` bytes; `dst` is the caller's densely-packed `dw*dh*4` output (dims
- * swap for 90/270/transpose). Returns false (a safe no-op) on null pointers or
- * inconsistent sizes so the caller can fall back. The platform side owns the
- * bitmap lock + the dst allocation; this only fills dst.
- *
- * # Safety
- * `src` must be valid for reads of `src_len` bytes and `dst` for writes of `dst_len`.
- */
-bool immich_core_rotate_rgba8888(const uint8_t *src,
-                                 uintptr_t src_len,
-                                 uintptr_t src_stride,
-                                 uint32_t width,
-                                 uint32_t height,
-                                 int32_t orientation,
-                                 uint8_t *dst,
-                                 uintptr_t dst_len);
-
-/**
- * Release a string returned by this library.
- *
- * # Safety
- * `ptr` must be a pointer previously returned by this library, or null.
- */
-void immich_core_free_string(char *ptr);

native/crates/immich_core_dart/rust-toolchain.toml

@@ -1,18 +0,0 @@
-# The build hook (native_toolchain_rust) drives cargo via rustup and auto-installs
-# this toolchain + targets. Pin a version (never bare stable/beta) for reproducible
-# builds. Keep the channel in sync with mise.toml's rust pin.
-[toolchain]
-channel = "1.92.0"
-targets = [
-  # Android
-  "armv7-linux-androideabi",
-  "aarch64-linux-android",
-  "x86_64-linux-android",
-  # iOS (device + simulator)
-  "aarch64-apple-ios",
-  "aarch64-apple-ios-sim",
-  "x86_64-apple-ios",
-  # host (local test / macOS)
-  "aarch64-apple-darwin",
-  "x86_64-apple-darwin",
-]

native/crates/immich_core_dart/src/lib.rs

@@ -1,197 +0,0 @@
-//! dart:ffi binding for immich_core (mobile).
-//!
-//! Returns heap-allocated C strings the caller must release with
-//! `immich_core_free_string`. cbindgen emits `include/immich_core.h` at build time.
-#![deny(clippy::unwrap_used, clippy::expect_used)]
-
-use std::ffi::{c_char, CStr, CString};
-use std::os::raw::c_uchar;
-use std::ptr;
-
-/// Native core version as a NUL-terminated UTF-8 string.
-/// Free the result with [`immich_core_free_string`].
-#[no_mangle]
-pub extern "C" fn immich_core_version() -> *mut c_char {
-    guard(ptr::null_mut(), || {
-        into_c_string(immich_core::core_version().to_owned())
-    })
-}
-
-/// SHA-1 (lowercase hex) of `len` bytes at `ptr`. Returns NULL on a null pointer.
-/// Free the result with [`immich_core_free_string`].
-///
-/// # Safety
-/// `ptr` must be valid for reads of `len` bytes.
-#[no_mangle]
-pub unsafe extern "C" fn immich_core_sha1_hex(ptr: *const c_uchar, len: usize) -> *mut c_char {
-    if ptr.is_null() {
-        return ptr::null_mut();
-    }
-    // SAFETY: caller guarantees `ptr` is valid for reads of `len` bytes (see # Safety).
-    let bytes = unsafe { std::slice::from_raw_parts(ptr, len) };
-    guard(ptr::null_mut(), || {
-        into_c_string(immich_core::hashing::sha1_hex(bytes))
-    })
-}
-
-/// SHA-1 (lowercase hex) of the file at `path` (NUL-terminated UTF-8), read via
-/// mmap — no Dart-side read or copy. Returns NULL on a null path, non-UTF-8 path,
-/// or any IO error. Free the result with [`immich_core_free_string`].
-///
-/// # Safety
-/// `path` must be a valid NUL-terminated C string, or null.
-#[no_mangle]
-pub unsafe extern "C" fn immich_core_sha1_file(path: *const c_char) -> *mut c_char {
-    if path.is_null() {
-        return ptr::null_mut();
-    }
-    // SAFETY: caller guarantees `path` is a valid NUL-terminated C string (see # Safety).
-    let cpath = unsafe { CStr::from_ptr(path) };
-    guard(ptr::null_mut(), || match cpath.to_str() {
-        Ok(s) => match immich_core::hashing::sha1_file(s) {
-            Ok(hex) => into_c_string(hex),
-            Err(_) => ptr::null_mut(),
-        },
-        Err(_) => ptr::null_mut(),
-    })
-}
-
-/// Rotate an RGBA8888 image to the given EXIF `orientation`. `src` is `sh` rows of
-/// `src_stride` bytes; `dst` is the caller's densely-packed `dw*dh*4` output (dims
-/// swap for 90/270/transpose). Returns false (a safe no-op) on null pointers or
-/// inconsistent sizes so the caller can fall back. The platform side owns the
-/// bitmap lock + the dst allocation; this only fills dst.
-///
-/// # Safety
-/// `src` must be valid for reads of `src_len` bytes and `dst` for writes of `dst_len`.
-#[no_mangle]
-pub unsafe extern "C" fn immich_core_rotate_rgba8888(
-    src: *const u8,
-    src_len: usize,
-    src_stride: usize,
-    width: u32,
-    height: u32,
-    orientation: i32,
-    dst: *mut u8,
-    dst_len: usize,
-) -> bool {
-    if src.is_null() || dst.is_null() {
-        return false;
-    }
-    // SAFETY: caller guarantees `src` is valid for reads of `src_len` bytes (see # Safety).
-    let src_slice = unsafe { std::slice::from_raw_parts(src, src_len) };
-    // SAFETY: caller guarantees `dst` is valid for writes of `dst_len` bytes (see # Safety).
-    let dst_slice = unsafe { std::slice::from_raw_parts_mut(dst, dst_len) };
-    // AssertUnwindSafe: the closure writes through `&mut dst_slice`, which isn't
-    // UnwindSafe, but a panic mid-rotate only leaves dst partially written — not a
-    // broken invariant — and we return false so the caller discards the buffer.
-    std::panic::catch_unwind(std::panic::AssertUnwindSafe(|| {
-        immich_core::image::rotate_rgba8888(
-            src_slice,
-            src_stride,
-            width as usize,
-            height as usize,
-            orientation,
-            dst_slice,
-        )
-    }))
-    .unwrap_or(false)
-}
-
-/// Release a string returned by this library.
-///
-/// # Safety
-/// `ptr` must be a pointer previously returned by this library, or null.
-#[no_mangle]
-pub unsafe extern "C" fn immich_core_free_string(ptr: *mut c_char) {
-    if ptr.is_null() {
-        return;
-    }
-    guard((), || {
-        // SAFETY: `ptr` came from this library's `CString::into_raw` (see # Safety).
-        let s = unsafe { CString::from_raw(ptr) };
-        drop(s);
-    });
-}
-
-/// Run `f` at the FFI boundary, turning a panic into `sentinel` rather than
-/// unwinding across `extern "C"` into the host. Guards panics only — a bad `len`
-/// or a double/foreign free is caller-contract UB that stays the caller's
-/// `# Safety` obligation, not something this can catch.
-fn guard<T>(sentinel: T, f: impl FnOnce() -> T + std::panic::UnwindSafe) -> T {
-    std::panic::catch_unwind(f).unwrap_or(sentinel)
-}
-
-fn into_c_string(s: String) -> *mut c_char {
-    match CString::new(s) {
-        Ok(c) => c.into_raw(),
-        Err(_) => ptr::null_mut(),
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    #![allow(clippy::unwrap_used)]
-    use super::*;
-    use std::ffi::CStr;
-
-    #[test]
-    fn version_roundtrips_and_frees() {
-        let p = immich_core_version();
-        assert!(!p.is_null());
-        // SAFETY: `p` is a non-null NUL-terminated string from this library.
-        let s = unsafe { CStr::from_ptr(p) }.to_str().unwrap();
-        assert!(!s.is_empty());
-        // SAFETY: `p` was returned by this library and is freed exactly once.
-        unsafe { immich_core_free_string(p) };
-    }
-
-    #[test]
-    fn sha1_null_ptr_returns_null() {
-        // SAFETY: a null ptr is the documented null-returning case.
-        let p = unsafe { immich_core_sha1_hex(ptr::null(), 0) };
-        assert!(p.is_null());
-    }
-
-    #[test]
-    fn sha1_known_vector_roundtrips_and_frees() {
-        let input = b"abc";
-        // SAFETY: `input` is valid for reads of `input.len()` bytes.
-        let p = unsafe { immich_core_sha1_hex(input.as_ptr(), input.len()) };
-        assert!(!p.is_null());
-        // SAFETY: `p` is a non-null NUL-terminated string from this library.
-        let s = unsafe { CStr::from_ptr(p) }.to_str().unwrap();
-        assert_eq!(s, "a9993e364706816aba3e25717850c26c9cd0d89d");
-        // SAFETY: `p` was returned by this library and is freed exactly once.
-        unsafe { immich_core_free_string(p) };
-    }
-
-    #[test]
-    fn free_null_is_noop() {
-        // SAFETY: free_string explicitly accepts null.
-        unsafe { immich_core_free_string(ptr::null_mut()) };
-    }
-
-    #[test]
-    fn sha1_file_roundtrips_and_frees() {
-        let path = std::env::temp_dir().join(format!("immich_core_ffi_{}.bin", std::process::id()));
-        std::fs::write(&path, b"abc").unwrap();
-        let c = std::ffi::CString::new(path.to_str().unwrap()).unwrap();
-        // SAFETY: `c` is a valid NUL-terminated path string.
-        let p = unsafe { immich_core_sha1_file(c.as_ptr()) };
-        assert!(!p.is_null());
-        // SAFETY: `p` is a non-null string from this library.
-        let s = unsafe { CStr::from_ptr(p) }.to_str().unwrap();
-        assert_eq!(s, "a9993e364706816aba3e25717850c26c9cd0d89d");
-        // SAFETY: `p` was returned by this library, freed once.
-        unsafe { immich_core_free_string(p) };
-        std::fs::remove_file(&path).ok();
-    }
-
-    #[test]
-    fn sha1_file_null_returns_null() {
-        // SAFETY: a null path is the documented null-returning case.
-        let p = unsafe { immich_core_sha1_file(ptr::null()) };
-        assert!(p.is_null());
-    }
-}

native/crates/immich_core_napi/Cargo.toml

@@ -1,19 +0,0 @@
-[package]
-name = "immich_core_napi"
-version.workspace = true
-edition.workspace = true
-license.workspace = true
-
-[lib]
-crate-type = ["cdylib"]
-
-[dependencies]
-immich_core = { path = "../immich_core", default-features = false, features = ["hashing"] }
-napi = { workspace = true, features = ["napi4", "dyn-symbols"] }
-napi-derive = { workspace = true }
-
-[build-dependencies]
-napi-build = { workspace = true }
-
-[lints]
-workspace = true

native/crates/immich_core_napi/build.rs

@@ -1,3 +0,0 @@
-fn main() {
-    napi_build::setup();
-}

native/crates/immich_core_napi/src/lib.rs

@@ -1,24 +0,0 @@
-//! napi-rs binding for immich_core (node server).
-//!
-//! Built as a cdylib loaded as a `.node` addon — the same shape as the server's
-//! existing native deps (sharp, bcrypt).
-
-use napi_derive::napi;
-
-/// Native core version. JS: `core.coreVersion()`.
-#[napi]
-pub fn core_version() -> String {
-    immich_core::core_version().to_owned()
-}
-
-/// SHA-1 (lowercase hex) of a buffer. JS: `core.sha1Hex(Buffer.from(...))`.
-#[napi]
-pub fn sha1_hex(bytes: napi::bindgen_prelude::Buffer) -> String {
-    immich_core::hashing::sha1_hex(bytes.as_ref())
-}
-
-/// SHA-1 (lowercase hex) of a file, read via mmap. JS: `core.sha1File(path)`.
-#[napi]
-pub fn sha1_file(path: String) -> napi::Result<String> {
-    immich_core::hashing::sha1_file(&path).map_err(|e| napi::Error::from_reason(e.to_string()))
-}

native/immich_native_core/.gitignore

@@ -1,33 +0,0 @@
-# Miscellaneous
-*.class
-*.log
-*.pyc
-*.swp
-.DS_Store
-.atom/
-.build/
-.buildlog/
-.history
-.svn/
-.swiftpm/
-migrate_working_dir/
-
-# IntelliJ related
-*.iml
-*.ipr
-*.iws
-.idea/
-
-# The .vscode folder contains launch configuration and tasks you configure in
-# VS Code which you may wish to be included in version control, so this line
-# is commented out by default.
-#.vscode/
-
-# Flutter/Dart/Pub related
-# Libraries should not include pubspec.lock, per https://dart.dev/guides/libraries/private-files#pubspeclock.
-/pubspec.lock
-**/doc/api/
-.dart_tool/
-.flutter-plugins-dependencies
-/build/
-/coverage/

native/immich_native_core/README.md

@@ -1,48 +0,0 @@
-# immich_native_core (Flutter package)
-
-dart:ffi bindings to the `immich_native_core` Rust core. The native code is **built
-from source on every app build** via a Dart build hook (Flutter native assets) — no
-prebuilt binaries, no `DynamicLibrary`, no platform plugin glue.
-
-## Use it from immich/mobile
-
-```yaml
-# mobile/pubspec.yaml
-dependencies:
-  immich_native_core:
-    path: ../native/immich_native_core
-```
-
-`dart pub get`, then call it:
-
-```dart
-import 'package:immich_native_core/immich_native_core.dart';
-
-final version = coreVersion();
-final hex = sha1Hex(bytes); // hash large inputs off the main isolate (worker_manager)
-```
-
-No app-level Gradle/Podfile edits. `hook/build.dart` compiles the Rust crate and
-Flutter bundles it as a code asset; the `@Native` bindings resolve against it.
-**Requirement:** every machine that builds the app needs [rustup](https://rustup.rs)
-— the hook auto-installs the pinned toolchain + targets from the crate's
-`rust-toolchain.toml`.
-
-## Layout
-
-- `hook/build.dart` — builds `../crates/immich_core_dart` via `native_toolchain_rust`.
-- `lib/immich_native_core.dart` — barrel, the public API.
-- `lib/src/{core,hashing,image}.dart` — thin wrappers, one file per Rust module.
-- `lib/src/ffi/bindings.g.dart` — ffigen `@Native` output (committed; do not edit).
-- `ffigen.yaml` — ffi-native mode; asset-id must match the hook's `assetName`.
-- `test/` — host FFI roundtrip (`flutter test`); device runs via `mobile/integration_test`.
-
-## ⚠ iOS App Extensions
-
-Code assets are bundled into the app's **Runner** target. immich ships a Share
-Extension and a Widget Extension — if the core is ever called from one of those,
-verify the symbols resolve there (same family as the embed-into-Runner-only gotcha).
-Not an issue while only the main app calls it.
-
-The Rust workspace, the codegen/build/test commands, and the "add a function" loop
-live in [`../README.md`](../README.md).

native/immich_native_core/analysis_options.yaml

@@ -1,4 +0,0 @@
-include: package:flutter_lints/flutter.yaml
-
-# Additional information about this file can be found at
-# https://dart.dev/guides/language/analysis-options

native/immich_native_core/ffigen.yaml

@@ -1,20 +0,0 @@
-# Regenerate: `mise run codegen` (cbindgen header -> ffigen @Native bindings).
-# ffi-native mode emits top-level @Native externals + a library @DefaultAsset
-# pointing at the code asset hook/build.dart produces — no DynamicLibrary loader.
-# asset-id MUST equal the generated file's package URI (and the hook's assetName).
-name: ImmichNativeCoreBindings
-ffi-native:
-  asset-id: 'package:immich_native_core/src/ffi/bindings.g.dart'
-description: 'FFI bindings to immich_native_core — generated, do not edit.'
-output: 'lib/src/ffi/bindings.g.dart'
-headers:
-  entry-points:
-    - '../crates/immich_core_dart/include/immich_core.h'
-  include-directives:
-    - '**/immich_core.h'
-functions:
-  include:
-    - 'immich_core_.*'
-comments:
-  style: any
-  length: full

native/immich_native_core/hook/build.dart

@@ -1,14 +0,0 @@
-import 'package:hooks/hooks.dart';
-import 'package:native_toolchain_rust/native_toolchain_rust.dart';
-
-// Builds crates/immich_core_dart from source on every app build and bundles it as
-// a code asset. assetName must match the ffigen output (its package URI is the
-// @Native DefaultAsset id). The crate is a sibling, so point cratePath at it.
-void main(List<String> args) async {
-  await build(args, (input, output) async {
-    await RustBuilder(
-      assetName: 'src/ffi/bindings.g.dart',
-      cratePath: '../crates/immich_core_dart',
-    ).run(input: input, output: output);
-  });
-}

native/immich_native_core/lib/immich_native_core.dart

@@ -1,8 +0,0 @@
-/// dart:ffi bindings to the immich_native_core Rust core (built from source via
-/// Dart build hooks). Public API only — implementation lives in `src/`, organised
-/// to mirror the Rust crate's modules (core / hashing / image).
-library;
-
-export 'src/core.dart';
-export 'src/hashing.dart';
-export 'src/image.dart';

native/immich_native_core/lib/src/core.dart

@@ -1,5 +0,0 @@
-import 'ffi/bindings.g.dart' as bindings;
-import 'ffi/ffi.dart';
-
-/// Version baked into the native core. Cheap — fine on the main isolate.
-String coreVersion() => readAndFree(bindings.immich_core_version(), 'core_version');

native/immich_native_core/lib/src/ffi/bindings.g.dart

@@ -1,75 +0,0 @@
-// AUTO GENERATED FILE, DO NOT EDIT.
-//
-// Generated by `package:ffigen`.
-// ignore_for_file: type=lint, unused_import
-@ffi.DefaultAsset('package:immich_native_core/src/ffi/bindings.g.dart')
-library;
-
-import 'dart:ffi' as ffi;
-
-/// Native core version as a NUL-terminated UTF-8 string.
-/// Free the result with [`immich_core_free_string`].
-@ffi.Native<ffi.Pointer<ffi.Char> Function()>()
-external ffi.Pointer<ffi.Char> immich_core_version();
-
-/// SHA-1 (lowercase hex) of `len` bytes at `ptr`. Returns NULL on a null pointer.
-/// Free the result with [`immich_core_free_string`].
-///
-/// # Safety
-/// `ptr` must be valid for reads of `len` bytes.
-@ffi.Native<
-  ffi.Pointer<ffi.Char> Function(ffi.Pointer<ffi.UnsignedChar>, ffi.UintPtr)
->()
-external ffi.Pointer<ffi.Char> immich_core_sha1_hex(
-  ffi.Pointer<ffi.UnsignedChar> ptr,
-  int len,
-);
-
-/// SHA-1 (lowercase hex) of the file at `path` (NUL-terminated UTF-8), read via
-/// mmap — no Dart-side read or copy. Returns NULL on a null path, non-UTF-8 path,
-/// or any IO error. Free the result with [`immich_core_free_string`].
-///
-/// # Safety
-/// `path` must be a valid NUL-terminated C string, or null.
-@ffi.Native<ffi.Pointer<ffi.Char> Function(ffi.Pointer<ffi.Char>)>()
-external ffi.Pointer<ffi.Char> immich_core_sha1_file(
-  ffi.Pointer<ffi.Char> path,
-);
-
-/// Rotate an RGBA8888 image to the given EXIF `orientation`. `src` is `sh` rows of
-/// `src_stride` bytes; `dst` is the caller's densely-packed `dw*dh*4` output (dims
-/// swap for 90/270/transpose). Returns false (a safe no-op) on null pointers or
-/// inconsistent sizes so the caller can fall back. The platform side owns the
-/// bitmap lock + the dst allocation; this only fills dst.
-///
-/// # Safety
-/// `src` must be valid for reads of `src_len` bytes and `dst` for writes of `dst_len`.
-@ffi.Native<
-  ffi.Bool Function(
-    ffi.Pointer<ffi.Uint8>,
-    ffi.UintPtr,
-    ffi.UintPtr,
-    ffi.Uint32,
-    ffi.Uint32,
-    ffi.Int32,
-    ffi.Pointer<ffi.Uint8>,
-    ffi.UintPtr,
-  )
->()
-external bool immich_core_rotate_rgba8888(
-  ffi.Pointer<ffi.Uint8> src,
-  int src_len,
-  int src_stride,
-  int width,
-  int height,
-  int orientation,
-  ffi.Pointer<ffi.Uint8> dst,
-  int dst_len,
-);
-
-/// Release a string returned by this library.
-///
-/// # Safety
-/// `ptr` must be a pointer previously returned by this library, or null.
-@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Char>)>()
-external void immich_core_free_string(ffi.Pointer<ffi.Char> ptr);

native/immich_native_core/lib/src/ffi/ffi.dart

@@ -1,19 +0,0 @@
-import 'dart:ffi';
-
-import 'package:ffi/ffi.dart';
-
-import 'bindings.g.dart' as bindings;
-
-/// Read a C string the core returned into a Dart string and free it. A null
-/// return means the native call failed (panic caught at the boundary, or error),
-/// so we throw rather than hand back a silent empty value.
-String readAndFree(Pointer<Char> ptr, String op) {
-  if (ptr == nullptr) {
-    throw StateError('immich_native_core: $op returned null');
-  }
-  try {
-    return ptr.cast<Utf8>().toDartString();
-  } finally {
-    bindings.immich_core_free_string(ptr);
-  }
-}

native/immich_native_core/lib/src/hashing.dart

@@ -1,34 +0,0 @@
-import 'dart:ffi';
-import 'dart:typed_data';
-
-import 'package:ffi/ffi.dart';
-
-import 'ffi/bindings.g.dart' as bindings;
-import 'ffi/ffi.dart';
-
-/// Lowercase-hex SHA-1 of [bytes]. Reads every byte natively and blocks the
-/// calling thread, so hash large inputs off the main isolate.
-String sha1Hex(Uint8List bytes) {
-  // allocate at least 1 byte — malloc(0) may return null (allocator-defined),
-  // which package:ffi would reject. The native side still reads only [len] bytes.
-  final len = bytes.length;
-  final buf = malloc<Uint8>(len == 0 ? 1 : len);
-  try {
-    if (len > 0) buf.asTypedList(len).setAll(0, bytes);
-    return readAndFree(bindings.immich_core_sha1_hex(buf.cast(), len), 'sha1_hex');
-  } finally {
-    malloc.free(buf);
-  }
-}
-
-/// Lowercase-hex SHA-1 of the file at [path], hashed natively via mmap — the file
-/// is never read into the Dart heap. Blocks the calling thread, so hash large
-/// files off the main isolate. Throws if the file is missing/unreadable.
-String sha1File(String path) {
-  final cpath = path.toNativeUtf8();
-  try {
-    return readAndFree(bindings.immich_core_sha1_file(cpath.cast()), 'sha1_file');
-  } finally {
-    malloc.free(cpath);
-  }
-}

native/immich_native_core/lib/src/image.dart

@@ -1,42 +0,0 @@
-import 'dart:ffi';
-import 'dart:typed_data';
-
-import 'package:ffi/ffi.dart';
-
-import 'ffi/bindings.g.dart' as bindings;
-
-/// True if [orientation] (EXIF) swaps width and height (the 90/270/transpose family).
-bool orientationSwapsDims(int orientation) =>
-    orientation == 5 || orientation == 6 || orientation == 7 || orientation == 8;
-
-/// Rotate an RGBA8888 image to the given EXIF [orientation], returning a freshly
-/// packed buffer (dims swap for 90/270/transpose). [srcStride] is bytes per source
-/// row (>= width*4). Returns null if the native rotate declines (bad sizes).
-///
-/// The production caller is the platform decode pipeline (it has the locked native
-/// bitmap); this Dart entry mirrors that path and is what the host tests exercise.
-Uint8List? rotateRgba8888(Uint8List src, int srcStride, int width, int height, int orientation) {
-  final dw = orientationSwapsDims(orientation) ? height : width;
-  final dh = orientationSwapsDims(orientation) ? width : height;
-  final dstLen = dw * dh * 4;
-  final srcPtr = malloc<Uint8>(src.isEmpty ? 1 : src.length);
-  final dstPtr = malloc<Uint8>(dstLen == 0 ? 1 : dstLen);
-  try {
-    if (src.isNotEmpty) srcPtr.asTypedList(src.length).setAll(0, src);
-    final ok = bindings.immich_core_rotate_rgba8888(
-      srcPtr.cast(),
-      src.length,
-      srcStride,
-      width,
-      height,
-      orientation,
-      dstPtr.cast(),
-      dstLen,
-    );
-    if (!ok) return null;
-    return Uint8List.fromList(dstPtr.asTypedList(dstLen));
-  } finally {
-    malloc.free(srcPtr);
-    malloc.free(dstPtr);
-  }
-}

native/immich_native_core/pubspec.yaml

@@ -1,26 +0,0 @@
-name: immich_native_core
-description: "dart:ffi bindings to the immich_native_core Rust core, built from source via Dart build hooks."
-version: 0.1.0
-homepage: https://github.com/immich-app/immich
-publish_to: none
-
-environment:
-  sdk: '>=3.11.0 <4.0.0'
-  flutter: '>=3.3.0'
-
-# Not a platform plugin: the native lib is built + bundled by hook/build.dart as a
-# code asset (Flutter native assets), so there is no ffiPlugin / android / ios dir.
-dependencies:
-  flutter:
-    sdk: flutter
-  ffi: ^2.2.0
-  # build-hook deps — run at build time to compile the Rust crate (need rustup).
-  hooks: ^2.0.2
-  native_toolchain_rust: ^1.0.4
-
-dev_dependencies:
-  ffigen: 20.1.1 # pinned exact — a caret bump can re-emit bindings
-  crypto: ^3.0.7 # pure-Dart SHA-1 baseline for the perf bench only
-  flutter_test:
-    sdk: flutter
-  flutter_lints: ^6.0.0

native/immich_native_core/test/native_core_test.dart

@@ -1,53 +0,0 @@
-// Host FFI roundtrip — `flutter test` builds the hook for the host platform and
-// resolves the @Native symbols, no device needed. (Device runs: example/integration_test.)
-import 'dart:convert';
-import 'dart:io';
-import 'dart:typed_data';
-
-import 'package:flutter_test/flutter_test.dart';
-import 'package:immich_native_core/immich_native_core.dart';
-
-void main() {
-  test('coreVersion returns a non-empty version', () {
-    expect(coreVersion(), isNotEmpty);
-  });
-
-  test('sha1Hex matches the FIPS-180 vector for "abc"', () {
-    expect(
-      sha1Hex(Uint8List.fromList(utf8.encode('abc'))),
-      'a9993e364706816aba3e25717850c26c9cd0d89d',
-    );
-  });
-
-  test('sha1Hex of empty input', () {
-    expect(sha1Hex(Uint8List(0)), 'da39a3ee5e6b4b0d3255bfef95601890afd80709');
-  });
-
-  test('sha1File matches the in-memory hash (mmap path)', () {
-    final tmp = Directory.systemTemp.createTempSync('native_core');
-    final path = '${tmp.path}/abc.bin';
-    File(path).writeAsBytesSync(utf8.encode('abc'));
-    expect(sha1File(path), 'a9993e364706816aba3e25717850c26c9cd0d89d');
-    tmp.deleteSync(recursive: true);
-  });
-
-  test('sha1File throws on a missing file', () {
-    expect(() => sha1File('/no/such/immich_native_core/file'), throwsStateError);
-  });
-
-  test('rotateRgba8888: 180 reverses pixels, 90 swaps dims', () {
-    // 2x1 image: pixel0 = red, pixel1 = green (RGBA).
-    final src = Uint8List.fromList([255, 0, 0, 255, 0, 255, 0, 255]);
-    final r180 = rotateRgba8888(src, 8, 2, 1, 3)!; // ROTATE_180
-    expect(r180, [0, 255, 0, 255, 255, 0, 0, 255]); // green, red
-
-    final r90 = rotateRgba8888(src, 8, 2, 1, 6)!; // ROTATE_90 -> 1x2
-    expect(r90.length, 8); // dims swapped to 1x2, still 2 pixels
-  });
-
-  test('rotateRgba8888 returns null on an undersized result expectation', () {
-    // width*height*4 mismatch is guarded natively; a 0x0 image yields empty.
-    final empty = rotateRgba8888(Uint8List(0), 0, 0, 0, 1);
-    expect(empty, anyOf(isNull, isEmpty));
-  });
-}

native/immich_native_core/test/sha1_bench.dart

@@ -1,82 +0,0 @@
-// SHA-1 perf bench — run explicitly: `flutter test test/sha1_bench.dart`.
-// (Not named *_test.dart so it stays out of the default `flutter test` run.)
-//
-// Three ways to hash a file, to isolate where the win is:
-//   A) sha1File(path)                 — Rust: open + mmap + HW-SHA, no Dart read
-//   B) File.read + sha1Hex(bytes)     — Dart reads into heap, Rust HW-SHA the bytes
-//   C) File.read + crypto.sha1(bytes) — Dart reads into heap, pure-Dart SHA-1 (naive)
-// A vs B = mmap/zero-copy win; B vs C = HW-SHA vs pure-Dart; A vs C = total vs naive.
-//
-// IMPORTANT — C (pure-Dart) is NOT immich's real baseline. immich already hashes
-// assets natively + hardware-accelerated on BOTH platforms (Android Kotlin
-// MessageDigest SHA-1, iOS Swift CryptoKit Insecure.SHA1), streamed over a read
-// buffer, via pigeon. So the real-world comparison is A vs ~B (Rust mmap vs a
-// buffered native read with HW-SHA), i.e. roughly the A/B gap (~1.3x), NOT A/C.
-// ignore_for_file: avoid_print
-import 'dart:io';
-import 'dart:typed_data';
-
-import 'package:crypto/crypto.dart' as crypto;
-import 'package:flutter_test/flutter_test.dart';
-import 'package:immich_native_core/immich_native_core.dart';
-
-void main() {
-  test('sha1 throughput: mmap(Rust) vs read+Rust vs read+pure-Dart', () {
-    final tmp = Directory.systemTemp.createTempSync('sha1_bench');
-    final sizesMb = [1, 16, 64, 256];
-
-    double msMin(int iters, void Function() f) {
-      var best = double.infinity;
-      for (var i = 0; i < iters; i++) {
-        final sw = Stopwatch()..start();
-        f();
-        sw.stop();
-        final ms = sw.elapsedMicroseconds / 1000.0;
-        if (ms < best) best = ms;
-      }
-      return best;
-    }
-
-    String mbps(int mb, double ms) => (mb / (ms / 1000.0)).toStringAsFixed(0);
-
-    print('');
-    print('size │  A mmap(Rust)   │  B read+Rust    │  C read+pureDart │ A vs C');
-    print('─────┼─────────────────┼─────────────────┼──────────────────┼───────');
-    for (final mb in sizesMb) {
-      final path = '${tmp.path}/f_$mb.bin';
-      final chunk = Uint8List(1 << 20); // 1 MiB pattern
-      for (var i = 0; i < chunk.length; i++) {
-        chunk[i] = (i * 31 + 7) & 0xff;
-      }
-      final sink = File(path).openSync(mode: FileMode.write);
-      for (var i = 0; i < mb; i++) {
-        sink.writeFromSync(chunk);
-      }
-      sink.closeSync();
-
-      final bytes = File(path).readAsBytesSync(); // for B/C; also baked into their totals below
-      final tRead = msMin(3, () => File(path).readAsBytesSync());
-
-      final tA = msMin(5, () => sha1File(path));
-      final tB = tRead + msMin(5, () => sha1Hex(bytes));
-      final tC = tRead + msMin(2, () => crypto.sha1.convert(bytes));
-
-      final hA = sha1File(path);
-      final hB = sha1Hex(bytes);
-      final hC = crypto.sha1.convert(bytes).toString();
-      expect(hA, hB);
-      expect(hA, hC);
-
-      final speedup = (tC / tA).toStringAsFixed(1);
-      String cell(double ms, int mb) =>
-          '${ms.toStringAsFixed(1)}ms ${mbps(mb, ms).padLeft(5)}MB/s';
-      print(
-        '${mb.toString().padLeft(3)}M │ ${cell(tA, mb)} │ ${cell(tB, mb)} │ ${cell(tC, mb).padRight(16)} │ ${speedup}x',
-      );
-    }
-    print('(A/B/C identical SHA-1; read time included in B/C totals.)');
-    print('(NOTE: immich already hashes natively+HW on both platforms — real');
-    print(' baseline ~= B, not C. Rust mmap edge over it is the A/B gap (~1.3x).)');
-    tmp.deleteSync(recursive: true);
-  }, timeout: const Timeout(Duration(minutes: 10)));
-}

native/mise.toml

@@ -1,68 +0,0 @@
-[tools]
-rust = "1.92.0" # keep in sync with rust-toolchain.toml (the build hook uses rustup)
-
-[tasks.build]
-description = "Build all native core crates (host)"
-run = "cargo build --workspace"
-
-[tasks.test]
-description = "Run native core Rust tests"
-run = "cargo test --workspace"
-
-[tasks.fmt]
-description = "Format all crates"
-run = "cargo fmt --all"
-
-[tasks.lint]
-description = "Clippy (warnings = errors)"
-run = "cargo clippy --workspace --all-targets -- -D warnings"
-
-# Regen the committed cbindgen header + ffigen @Native bindings.
-[tasks."codegen:ffigen"]
-alias = "codegen"
-description = "Generate the C header (cbindgen) + Dart @Native bindings (ffigen)"
-sources = [
-    "crates/immich_core_dart/src/lib.rs",
-    "crates/immich_core_dart/cbindgen.toml",
-    "immich_native_core/ffigen.yaml",
-]
-outputs = [
-    "crates/immich_core_dart/include/immich_core.h",
-    "immich_native_core/lib/immich_native_core_bindings_generated.dart",
-]
-run = [
-    "cargo build -p immich_core_dart",
-    "cd immich_native_core && dart run ffigen --config ffigen.yaml && dart format lib/immich_native_core_bindings_generated.dart",
-]
-
-# Host FFI roundtrip through the real build hook — no device. Builds the Rust crate
-# via rustup + resolves the @Native code asset.
-[tasks."test:flutter"]
-description = "Host FFI roundtrip via the build hook (flutter test)"
-dir = "immich_native_core"
-run = "flutter test"
-
-[tasks."build:dart"]
-description = "Build the dart:ffi cdylib directly (host, raw cargo)"
-run = "cargo build -p immich_core_dart"
-
-[tasks."build:napi"]
-description = "Build the node addon + stage a .node for require() (server, unwired)"
-run = [
-    "cargo build -p immich_core_napi --release",
-    "cp target/release/libimmich_core_napi.dylib smoke/immich_core_napi.node 2>/dev/null || cp target/release/libimmich_core_napi.so smoke/immich_core_napi.node",
-]
-
-[tasks."smoke:dart"]
-description = "Host dart:ffi ABI roundtrip (raw DynamicLibrary on the cdylib)"
-depends = ["build:dart"]
-run = "dart run smoke/dart_smoke.dart target/debug/libimmich_core_dart.dylib"
-
-[tasks."smoke:node"]
-description = "Host napi roundtrip"
-depends = ["build:napi"]
-run = "node smoke/node_smoke.mjs"
-
-[tasks.smoke]
-description = "Rust tests + host dart:ffi + host napi roundtrips"
-depends = ["test", "smoke:dart", "smoke:node"]

native/scripts/build-linux.sh

@@ -1,17 +0,0 @@
-#!/usr/bin/env bash
-# Cross-build the napi addon for Linux server (x86_64 + aarch64) via zigbuild
-# (no Docker) and stage as .node under dist/server/<target>/.
-# In CI you'd build these natively per-arch instead; this is local convenience.
-set -euo pipefail
-cd "$(dirname "$0")/.."
-
-CRATE=immich_core_napi
-
-for t in x86_64-unknown-linux-gnu aarch64-unknown-linux-gnu; do
-    rustup target add "$t" >/dev/null 2>&1 || true
-    cargo zigbuild -p "$CRATE" --target "$t" --release
-    mkdir -p "dist/server/$t"
-    cp "target/$t/release/lib${CRATE}.so" "dist/server/$t/immich_core_napi.node"
-done
-
-echo "linux -> dist/server/*/immich_core_napi.node"

native/smoke/dart_smoke.dart

@@ -1,31 +0,0 @@
-// Mobile-side roundtrip: open the dart:ffi cdylib and call into the shared core.
-// Standalone script (no package:ffi dep) — reads the returned C string by hand.
-//
-//   dart run smoke/dart_smoke.dart target/debug/libimmich_core_dart.dylib
-
-import 'dart:ffi';
-
-typedef _VersionNative = Pointer<Uint8> Function();
-typedef _FreeNative = Void Function(Pointer<Uint8>);
-typedef _FreeDart = void Function(Pointer<Uint8>);
-
-String _readCString(Pointer<Uint8> p) {
-  final bytes = <int>[];
-  for (var i = 0; p[i] != 0; i++) {
-    bytes.add(p[i]);
-  }
-  return String.fromCharCodes(bytes);
-}
-
-void main(List<String> args) {
-  final libPath = args.isNotEmpty ? args.first : 'target/debug/libimmich_core_dart.dylib';
-  final lib = DynamicLibrary.open(libPath);
-
-  final version = lib.lookupFunction<_VersionNative, _VersionNative>('immich_core_version');
-  final free = lib.lookupFunction<_FreeNative, _FreeDart>('immich_core_free_string');
-
-  final ptr = version();
-  print('DART core_version = ${_readCString(ptr)}');
-  free(ptr);
-  print('DART roundtrip OK');
-}

native/smoke/node_smoke.mjs

@@ -1,17 +0,0 @@
-// Server-side roundtrip: load the napi addon and call into the shared core.
-import { createRequire } from 'node:module';
-
-const require = createRequire(import.meta.url);
-const core = require('./immich_core_napi.node');
-
-const version = core.coreVersion();
-console.log(`NAPI core_version = ${version}`);
-
-const hash = core.sha1Hex(Buffer.from('abc'));
-console.log(`NAPI sha1Hex("abc") = ${hash}`);
-
-if (hash !== 'a9993e364706816aba3e25717850c26c9cd0d89d') {
-  console.error('NAPI sha1 mismatch');
-  process.exit(1);
-}
-console.log('NAPI roundtrip OK');