更新数据目录配置

Dockerfile

@@ -53,11 +53,13 @@ COPY --from=backend-build /app/web/build /app/web/build
 # Create data and cache directories
 RUN mkdir -p /app/data /app/cache
 
+# Set environment variables (can be overridden at runtime)
+ENV PORT=8080 \
+    DATA_DIR=/app/data \
+    CACHE_DIR=/app/cache
+
 # Expose port
 EXPOSE 8080
 
-# Set environment variables
-ENV PORT=8080
-
 # Start server
 CMD ["/app/bin/server"]

bin/config/app_config.dart

@@ -0,0 +1,37 @@
+import 'dart:io';
+
+/// 应用配置管理
+/// 
+/// 支持通过环境变量配置数据目录和缓存目录：
+/// - `DATA_DIR`: 数据目录路径，默认为 `data`
+/// - `CACHE_DIR`: 缓存目录路径，默认为 `cache`
+class AppConfig {
+  /// 数据目录路径
+  final String dataDir;
+  
+  /// 缓存目录路径
+  final String cacheDir;
+
+  /// 单例实例
+  static final AppConfig _instance = AppConfig._fromEnvironment();
+
+  /// 获取配置实例
+  factory AppConfig() => _instance;
+
+  /// 从环境变量创建配置
+  AppConfig._fromEnvironment()
+      : dataDir = Platform.environment['DATA_DIR'] ?? 'data',
+        cacheDir = Platform.environment['CACHE_DIR'] ?? 'cache';
+
+  /// 获取相册预览缓存目录
+  String get previewCacheDir => '$cacheDir/preview';
+
+  /// 确保所有必需的目录都存在
+  Future<void> ensureDirectoriesExist() async {
+    await Directory(dataDir).create(recursive: true);
+    await Directory(previewCacheDir).create(recursive: true);
+  }
+
+  @override
+  String toString() => 'AppConfig(dataDir: $dataDir, cacheDir: $cacheDir)';
+}

bin/router.dart

@@ -5,13 +5,15 @@ import 'dart:async';
 import 'package:shelf/shelf.dart';
 import 'package:shelf_router/shelf_router.dart';
 
+import 'config/app_config.dart';
 import 'util/vips.dart';
 import 'domain/repositories/photo_repository.dart';
 import 'domain/repositories/album_repository.dart';
 
-final vips = Vips();
-final albumRepository = AlbumRepository(basePath: 'data');
-final photoRepository = PhotoRepository('data');
+final _config = AppConfig();
+final vips = Vips(cacheDir: _config.cacheDir);
+final albumRepository = AlbumRepository(basePath: _config.dataDir);
+final photoRepository = PhotoRepository(_config.dataDir);
 
 Response jsonResponse(dynamic data) {
   return Response.ok(

bin/server.dart

@@ -3,10 +3,16 @@ import 'dart:io';
 import 'package:shelf/shelf.dart';
 import 'package:shelf/shelf_io.dart';
 
+import 'config/app_config.dart';
 import 'router.dart';
 import 'middleware/exception_handler.dart';
 
 void main(List<String> args) async {
+  // Initialize configuration and ensure directories exist
+  final config = AppConfig();
+  print('Configuration: $config');
+  await config.ensureDirectoriesExist();
+
   // Use any available host or container IP (usually `0.0.0.0`).
   final ip = InternetAddress.anyIPv4;
 

bin/util/vips.dart

@@ -4,8 +4,9 @@ import 'package:path/path.dart';
 
 class Vips {
   String? vipsExecuteFile;
+  final String cacheDir;
 
-  Vips({this.vipsExecuteFile});
+  Vips({this.vipsExecuteFile, required this.cacheDir});
 
   /// 生成图片预览（WebP 格式）
   /// 
@@ -22,7 +23,7 @@ class Vips {
     // 生成缓存文件名：包含原图 hash 和尺寸信息
     final baseName = basename(imgPath).hashCode.toString();
     final sizeSuffix = _buildSizeSuffix(w, h);
-    final imgOut = "cache/preview/${baseName}${sizeSuffix}.webp";
+    final imgOut = "$cacheDir/preview/$baseName$sizeSuffix.webp";
     final outFile = File(imgOut);
     
     // 缓存命中：直接返回已存在的预览图

docker-compose.yml

@@ -12,6 +12,8 @@ services:
       - ./cache:/app/cache
     environment:
       - PORT=8080
+      - DATA_DIR=/app/data
+      - CACHE_DIR=/app/cache
     restart: unless-stopped
     healthcheck:
       test: ["CMD", "curl", "-f", "http://localhost:8080/api/v1/"]