Source Code added

mobile/lib/services/folder.service.dart

@@ -0,0 +1,101 @@
+import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:immich_mobile/constants/enums.dart';
+import 'package:immich_mobile/entities/asset.entity.dart';
+import 'package:immich_mobile/models/folder/recursive_folder.model.dart';
+import 'package:immich_mobile/models/folder/root_folder.model.dart';
+import 'package:immich_mobile/repositories/folder_api.repository.dart';
+import 'package:logging/logging.dart';
+
+final folderServiceProvider = Provider((ref) => FolderService(ref.watch(folderApiRepositoryProvider)));
+
+class FolderService {
+  final FolderApiRepository _folderApiRepository;
+  final Logger _log = Logger("FolderService");
+
+  FolderService(this._folderApiRepository);
+
+  Future<RootFolder> getFolderStructure(SortOrder order) async {
+    final paths = await _folderApiRepository.getAllUniquePaths();
+
+    // Create folder structure
+    Map<String, List<RecursiveFolder>> folderMap = {};
+
+    for (String fullPath in paths) {
+      if (fullPath == '/') continue;
+
+      // Ensure the path starts with a slash
+      if (!fullPath.startsWith('/')) {
+        fullPath = '/$fullPath';
+      }
+
+      List<String> segments = fullPath.split('/')..removeWhere((s) => s.isEmpty);
+
+      String currentPath = '';
+
+      for (int i = 0; i < segments.length; i++) {
+        String parentPath = currentPath.isEmpty ? '_root_' : currentPath;
+        currentPath = i == 0 ? '/${segments[i]}' : '$currentPath/${segments[i]}';
+
+        if (!folderMap.containsKey(parentPath)) {
+          folderMap[parentPath] = [];
+        }
+
+        if (!folderMap[parentPath]!.any((f) => f.name == segments[i])) {
+          folderMap[parentPath]!.add(
+            RecursiveFolder(path: parentPath == '_root_' ? '' : parentPath, name: segments[i], subfolders: []),
+          );
+          // Sort folders based on order parameter
+          folderMap[parentPath]!.sort(
+            (a, b) => order == SortOrder.desc ? b.name.compareTo(a.name) : a.name.compareTo(b.name),
+          );
+        }
+      }
+    }
+
+    void attachSubfolders(RecursiveFolder folder) {
+      String fullPath = folder.path.isEmpty ? '/${folder.name}' : '${folder.path}/${folder.name}';
+
+      if (folderMap.containsKey(fullPath)) {
+        folder.subfolders.addAll(folderMap[fullPath]!);
+        // Sort subfolders based on order parameter
+        folder.subfolders.sort((a, b) => order == SortOrder.desc ? b.name.compareTo(a.name) : a.name.compareTo(b.name));
+        for (var subfolder in folder.subfolders) {
+          attachSubfolders(subfolder);
+        }
+      }
+    }
+
+    List<RecursiveFolder> rootSubfolders = folderMap['_root_'] ?? [];
+    // Sort root subfolders based on order parameter
+    rootSubfolders.sort((a, b) => order == SortOrder.desc ? b.name.compareTo(a.name) : a.name.compareTo(b.name));
+
+    for (var folder in rootSubfolders) {
+      attachSubfolders(folder);
+    }
+
+    return RootFolder(subfolders: rootSubfolders, path: '/');
+  }
+
+  Future<List<Asset>> getFolderAssets(RootFolder folder, SortOrder order) async {
+    try {
+      if (folder is RecursiveFolder) {
+        String fullPath = folder.path.isEmpty ? folder.name : '${folder.path}/${folder.name}';
+        fullPath = fullPath[0] == '/' ? fullPath.substring(1) : fullPath;
+        var result = await _folderApiRepository.getAssetsForPath(fullPath);
+
+        if (order == SortOrder.desc) {
+          result.sort((a, b) => b.fileCreatedAt.compareTo(a.fileCreatedAt));
+        } else {
+          result.sort((a, b) => a.fileCreatedAt.compareTo(b.fileCreatedAt));
+        }
+
+        return result;
+      }
+      final result = await _folderApiRepository.getAssetsForPath('/');
+      return result;
+    } catch (e, stack) {
+      _log.severe("Failed to fetch assets for folder ${folder is RecursiveFolder ? folder.name : "root"}", e, stack);
+      return [];
+    }
+  }
+}