引入部分缓存机制

引入封面图信息

正在进入测试阶段

lib/metadata/metadata_reader.dart

@@ -1,19 +1,25 @@
 // lib/metadata/metadata_reader.dart
 import 'dart:io';
-import 'package:flutter/foundation.dart'; // ⭐ 添加
+import 'package:flutter/foundation.dart';
 import 'package:audio_metadata_reader/audio_metadata_reader.dart' as amr;
 import 'metadata_model.dart';
 
 class MetadataReader {
   Future<RawMetadata> readRawMetadata(File file) async {
     try {
-      final meta = amr.readMetadata(file, getImage: false);
+      // ⭐ getImage: true 读取封面图
+      final meta = amr.readMetadata(file, getImage: true);
+
+      // ⭐ 提取第一张图片
+      Uint8List? artwork;
+      if (meta.pictures != null && meta.pictures!.isNotEmpty) {
+        artwork = meta.pictures.first.bytes;
+      }
 
       return RawMetadata(
         title: meta.title ?? '',
         artist: meta.artist ?? '',
         album: meta.album ?? '',
-        // ⭐ genres 和 performers 是非空 List<String>，不需要 ??
         genres: meta.genres,
         performers: meta.performers,
         year: _toInt(meta.year),
@@ -22,6 +28,7 @@ class MetadataReader {
         discNumber: _toInt(meta.discNumber),
         totalDisc: _toInt(meta.totalDisc),
         duration: meta.duration,
+        artwork: artwork,
       );
     } catch (e) {
       debugPrint('⚠️ [MetadataReader] read failed: $e');