初始化项目

bin/domain/repositories/album_repository.dart

@@ -0,0 +1,41 @@
+import 'dart:io';
+
+import 'package:path/path.dart' as p;
+
+import '../entities/album.dart';
+
+class AlbumRepository {
+  final String basePath;
+
+  AlbumRepository({required this.basePath});
+
+  Future<List<Album>> getAllAlbums() async {
+    final dir = Directory(basePath);
+    if (!await dir.exists()) {
+      return [];
+    }
+
+    var albums = await dir
+        .list()
+        .where((d) => d is Directory)
+        .map((d) => d as Directory)
+        .map((dir) {
+          final name = p.basename(dir.path);
+          return Album(
+            id: name.hashCode,
+            name: name,
+            createdAt: dir.statSync().changed,
+            updatedAt: dir.statSync().changed,
+          );
+        })
+        .toList();
+
+    return albums;
+  }
+
+  Future<Album?> getAlbumById(int id) async {
+    final albums = await getAllAlbums();
+    return albums.where((a) => a.id == id).firstOrNull;
+  }
+
+}