基础实现代码框架先上，后面慢慢改逻辑

2026-08-23 19:24:16 +08:00
parent 6c4e77ca00
commit 9a60441e04
9 changed files with 446 additions and 1 deletions
@@ -0,0 +1,141 @@
+// lib/metadata/metadata_model.dart
+import 'dart:typed_data';
+
+/// 从音频文件读取的原始元数据（未经任何处理）
+class RawMetadata {
+  final String title;
+  final String artist;
+  final String album;
+  final String albumArtist;
+  final String composer;
+  final String genre;
+  final int year;
+  final int trackNumber;
+  final int discNumber;
+  final Uint8List? artwork;
+
+  const RawMetadata({
+    this.title = '',
+    this.artist = '',
+    this.album = '',
+    this.albumArtist = '',
+    this.composer = '',
+    this.genre = '',
+    this.year = 0,
+    this.trackNumber = 0,
+    this.discNumber = 0,
+    this.artwork,
+  });
+
+  /// 判断是否为空（没有任何有效信息）
+  bool get isEmpty =>
+      title.isEmpty &&
+      artist.isEmpty &&
+      album.isEmpty &&
+      albumArtist.isEmpty &&
+      composer.isEmpty &&
+      genre.isEmpty &&
+      year == 0 &&
+      trackNumber == 0 &&
+      discNumber == 0 &&
+      artwork == null;
+
+  bool get isNotEmpty => !isEmpty;
+}
+
+/// 经过标准化处理后的元数据
+class NormalizedMetadata {
+  final String title;
+  final String artist;
+  final String album;
+  final String albumArtist;
+  final String composer;
+  final String genre;
+  final int year;
+  final int trackNumber;
+  final int discNumber;
+  final Uint8List? artwork;
+
+  const NormalizedMetadata({
+    this.title = '',
+    this.artist = '',
+    this.album = '',
+    this.albumArtist = '',
+    this.composer = '',
+    this.genre = '',
+    this.year = 0,
+    this.trackNumber = 0,
+    this.discNumber = 0,
+    this.artwork,
+  });
+
+  bool get isEmpty =>
+      title.isEmpty &&
+      artist.isEmpty &&
+      album.isEmpty &&
+      albumArtist.isEmpty &&
+      composer.isEmpty &&
+      genre.isEmpty &&
+      year == 0 &&
+      trackNumber == 0 &&
+      discNumber == 0 &&
+      artwork == null;
+
+  bool get isNotEmpty => !isEmpty;
+}
+
+/// 带置信度的候选元数据
+class CandidateMetadata {
+  final NormalizedMetadata metadata;
+  final double confidence; // 0.0 ~ 1.0
+  final Map<String, double> evidence; // 证据来源权重
+
+  const CandidateMetadata({
+    required this.metadata,
+    required this.confidence,
+    this.evidence = const {},
+  });
+}
+
+/// 最终确认的元数据
+class FinalMetadata {
+  final String title;
+  final String artist;
+  final String album;
+  final String albumArtist;
+  final String composer;
+  final String genre;
+  final int year;
+  final int trackNumber;
+  final int discNumber;
+  final Uint8List? artwork;
+  final String source; // 'file_tag', 'filename', 'cache', 'user_corrected'
+
+  const FinalMetadata({
+    this.title = '',
+    this.artist = '',
+    this.album = '',
+    this.albumArtist = '',
+    this.composer = '',
+    this.genre = '',
+    this.year = 0,
+    this.trackNumber = 0,
+    this.discNumber = 0,
+    this.artwork,
+    this.source = 'unknown',
+  });
+
+  bool get isEmpty =>
+      title.isEmpty &&
+      artist.isEmpty &&
+      album.isEmpty &&
+      albumArtist.isEmpty &&
+      composer.isEmpty &&
+      genre.isEmpty &&
+      year == 0 &&
+      trackNumber == 0 &&
+      discNumber == 0 &&
+      artwork == null;
+
+  bool get isNotEmpty => !isEmpty;
+}