feat(mobile): Cache assets and albums for faster loading speed

feat(mobile): Cache assets and albums for faster loading speed

mobile/lib/modules/album/providers/album.provider.dart

@@ -1,22 +1,35 @@
 import 'package:hooks_riverpod/hooks_riverpod.dart';
 import 'package:immich_mobile/modules/album/services/album.service.dart';
+import 'package:immich_mobile/modules/album/services/album_cache.service.dart';
 import 'package:openapi/api.dart';
 
 class AlbumNotifier extends StateNotifier<List<AlbumResponseDto>> {
-  AlbumNotifier(this._albumService) : super([]);
+  AlbumNotifier(this._albumService, this._albumCacheService) : super([]);
   final AlbumService _albumService;
+  final AlbumCacheService _albumCacheService;
+
+  _cacheState() {
+    _albumCacheService.put(state);
+  }
 
   getAllAlbums() async {
+
+    if (await _albumCacheService.isValid() && state.isEmpty) {
+      state = await _albumCacheService.get();
+    }
+
     List<AlbumResponseDto>? albums =
         await _albumService.getAlbums(isShared: false);
 
     if (albums != null) {
       state = albums;
+      _cacheState();
     }
   }
 
   deleteAlbum(String albumId) {
     state = state.where((album) => album.id != albumId).toList();
+    _cacheState();
   }
 
   Future<AlbumResponseDto?> createAlbum(
@@ -28,6 +41,8 @@ class AlbumNotifier extends StateNotifier<List<AlbumResponseDto>> {
 
     if (album != null) {
       state = [...state, album];
+      _cacheState();
+
       return album;
     }
     return null;
@@ -36,5 +51,8 @@ class AlbumNotifier extends StateNotifier<List<AlbumResponseDto>> {
 
 final albumProvider =
     StateNotifierProvider<AlbumNotifier, List<AlbumResponseDto>>((ref) {
-  return AlbumNotifier(ref.watch(albumServiceProvider));
+  return AlbumNotifier(
+    ref.watch(albumServiceProvider),
+    ref.watch(albumCacheServiceProvider),
+  );
 });

mobile/lib/modules/album/providers/shared_album.provider.dart

@@ -1,12 +1,18 @@
 import 'package:flutter/material.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
 import 'package:immich_mobile/modules/album/services/album.service.dart';
+import 'package:immich_mobile/modules/album/services/album_cache.service.dart';
 import 'package:openapi/api.dart';
 
 class SharedAlbumNotifier extends StateNotifier<List<AlbumResponseDto>> {
-  SharedAlbumNotifier(this._sharedAlbumService) : super([]);
+  SharedAlbumNotifier(this._sharedAlbumService, this._sharedAlbumCacheService) : super([]);
 
   final AlbumService _sharedAlbumService;
+  final SharedAlbumCacheService _sharedAlbumCacheService;
+
+  _cacheState() {
+    _sharedAlbumCacheService.put(state);
+  }
 
   Future<AlbumResponseDto?> createSharedAlbum(
     String albumName,
@@ -22,6 +28,7 @@ class SharedAlbumNotifier extends StateNotifier<List<AlbumResponseDto>> {
 
       if (newAlbum != null) {
         state = [...state, newAlbum];
+        _cacheState();
       }
 
       return newAlbum;
@@ -33,16 +40,22 @@ class SharedAlbumNotifier extends StateNotifier<List<AlbumResponseDto>> {
   }
 
   getAllSharedAlbums() async {
+    if (await _sharedAlbumCacheService.isValid() && state.isEmpty) {
+      state = await _sharedAlbumCacheService.get();
+    }
+
     List<AlbumResponseDto>? sharedAlbums =
         await _sharedAlbumService.getAlbums(isShared: true);
 
     if (sharedAlbums != null) {
       state = sharedAlbums;
+      _cacheState();
     }
   }
 
   deleteAlbum(String albumId) async {
     state = state.where((album) => album.id != albumId).toList();
+    _cacheState();
   }
 
   Future<bool> leaveAlbum(String albumId) async {
@@ -50,6 +63,7 @@ class SharedAlbumNotifier extends StateNotifier<List<AlbumResponseDto>> {
 
     if (res) {
       state = state.where((album) => album.id != albumId).toList();
+      _cacheState();
       return true;
     } else {
       return false;
@@ -72,7 +86,10 @@ class SharedAlbumNotifier extends StateNotifier<List<AlbumResponseDto>> {
 
 final sharedAlbumProvider =
     StateNotifierProvider<SharedAlbumNotifier, List<AlbumResponseDto>>((ref) {
-  return SharedAlbumNotifier(ref.watch(albumServiceProvider));
+  return SharedAlbumNotifier(
+    ref.watch(albumServiceProvider),
+    ref.watch(sharedAlbumCacheServiceProvider),
+  );
 });
 
 final sharedAlbumDetailProvider = FutureProvider.autoDispose

mobile/lib/modules/album/services/album_cache.service.dart

@@ -0,0 +1,49 @@
+
+import 'package:collection/collection.dart';
+import 'package:flutter/foundation.dart';
+import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:immich_mobile/shared/services/json_cache.dart';
+import 'package:openapi/api.dart';
+
+class BaseAlbumCacheService extends JsonCache<List<AlbumResponseDto>> {
+  BaseAlbumCacheService(super.cacheFileName);
+
+  @override
+  void put(List<AlbumResponseDto> data) {
+    putRawData(data.map((e) => e.toJson()).toList());
+  }
+
+  @override
+  Future<List<AlbumResponseDto>> get() async {
+    try {
+      final mapList = await readRawData() as List<dynamic>;
+
+      final responseData = mapList
+          .map((e) => AlbumResponseDto.fromJson(e))
+          .whereNotNull()
+          .toList();
+
+      return responseData;
+    } catch (e) {
+      debugPrint(e.toString());
+      return [];
+    }
+  }
+}
+
+class AlbumCacheService extends BaseAlbumCacheService {
+  AlbumCacheService() : super("album_cache");
+}
+
+class SharedAlbumCacheService extends BaseAlbumCacheService {
+  SharedAlbumCacheService() : super("shared_album_cache");
+}
+
+final albumCacheServiceProvider = Provider(
+      (ref) => AlbumCacheService(),
+);
+
+final sharedAlbumCacheServiceProvider = Provider(
+      (ref) => SharedAlbumCacheService(),
+);
+