init

2025-08-22 15:13:34 +08:00
parent 961b2ae1ee
commit 1c07d576d3
44 changed files with 8049 additions and 16 deletions
@@ -0,0 +1,204 @@
+import 'dart:io';
+
+import 'package:flutter/services.dart';
+import 'package:package_info_plus/package_info_plus.dart';
+import 'package:path/path.dart' as p;
+import 'package:path_provider/path_provider.dart';
+
+class ModelManager {
+  /// 当前应用版本（用于初始化检查）
+  static String? _currentVersion;
+
+  /// 获取当前应用版本
+  static Future<String> _getCurrentVersion() async {
+    if (_currentVersion == null) {
+      final packageInfo = await PackageInfo.fromPlatform();
+      _currentVersion = '${packageInfo.version}+${packageInfo.buildNumber}';
+    }
+    return _currentVersion!;
+  }
+
+  /// 检查3D模型资源是否已完成初始化（基于版本号）
+  static Future<bool> isInitialized() async {
+    final supportDir = await getApplicationSupportDirectory();
+    final currentVersion = await _getCurrentVersion();
+    final initMarker = File(
+      p.join(supportDir.path, '3d_models', '.initialized_$currentVersion'),
+    );
+
+    return await initMarker.exists();
+  }
+
+  /// 标记3D模型资源初始化完成
+  static Future<void> markInitialized() async {
+    final supportDir = await getApplicationSupportDirectory();
+    final currentVersion = await _getCurrentVersion();
+    final modelsDir = Directory(p.join(supportDir.path, '3d_models'));
+
+    if (!await modelsDir.exists()) {
+      await modelsDir.create(recursive: true);
+    }
+
+    final initMarker = File(
+      p.join(modelsDir.path, '.initialized_$currentVersion'),
+    );
+    await initMarker.writeAsString('${DateTime.now().toIso8601String()}\n');
+  }
+
+  /// 从assets目录提取文件到指定路径
+  static Future<void> _extractAsset(String assetPath, String localPath) async {
+    final localFile = File(localPath);
+    final localDir = Directory(p.dirname(localPath));
+
+    // 确保目录存在
+    if (!await localDir.exists()) {
+      await localDir.create(recursive: true);
+    }
+
+    try {
+      // 从assets中读取数据
+      final ByteData data = await rootBundle.load(assetPath);
+      final List<int> bytes = data.buffer.asUint8List();
+
+      // 写入本地文件
+      await localFile.writeAsBytes(bytes);
+      print('成功提取3D模型文件: $assetPath -> $localPath');
+    } catch (e) {
+      print('提取3D模型资源文件失败 $assetPath: $e');
+      rethrow;
+    }
+  }
+
+  /// 初始化3D模型资源
+  static Future<void> initializeAppResources() async {
+    final currentVersion = await _getCurrentVersion();
+
+    if (await isInitialized()) {
+      print('3D模型资源已初始化，当前版本: $currentVersion');
+      return;
+    }
+
+    try {
+      // 迁移模型文件
+      await _migrateModels();
+
+      // 标记初始化完成
+      await markInitialized();
+
+      print('3D模型资源初始化完成');
+    } catch (e) {
+      print('3D模型资源初始化失败: $e');
+      rethrow;
+    }
+  }
+
+  /// 迁移3D模型文件
+  /// 迁移3D模型文件
+  static Future<void> _migrateModels() async {
+    print('开始迁移3D模型文件...');
+
+    final supportDir = await getApplicationSupportDirectory();
+    final modelsDir = Directory(p.join(supportDir.path, 'models'));
+
+    // 创建3D模型目录
+    if (!await modelsDir.exists()) {
+      await modelsDir.create(recursive: true);
+    }
+
+    // 创建cup子目录
+    final cupDir = Directory(p.join(modelsDir.path, 'cup'));
+    if (!await cupDir.exists()) {
+      await cupDir.create(recursive: true);
+    }
+
+    // 3D模型文件列表 - 修正路径
+    final modelFiles = [
+      'cup/model.gltf',
+      'cup/model.bin',
+      'cup/texture.jpg',
+    ];
+
+    // 迁移所有3D模型文件
+    for (final modelFile in modelFiles) {
+      try {
+        // 确保源文件路径正确
+        final assetPath = 'assets/$modelFile';
+
+        // 检查资源是否存在
+        try {
+          await rootBundle.load(assetPath);
+        } catch (e) {
+          print('资源文件不存在: $assetPath');
+          continue;
+        }
+
+        await _extractAsset(
+          assetPath,
+          p.join(modelsDir.path, modelFile),
+        );
+      } catch (e) {
+        print('迁移3D模型文件失败 $modelFile: $e');
+        // 继续迁移其他模型文件
+      }
+    }
+
+    print('3D模型文件迁移完成');
+  }
+
+  /// 获取3D模型文件目录路径
+  static Future<String> getModelsPath() async {
+    final supportDir = await getApplicationSupportDirectory();
+    return p.join(supportDir.path, 'models/cup/');
+  }
+
+  /// 获取特定3D模型文件的路径
+  static Future<String> getModelFilePath(String relativePath) async {
+    final modelsPath = await getModelsPath();
+    final filePath = p.join(modelsPath, relativePath);
+    final file = File(filePath);
+
+    if (!await file.exists()) {
+      throw FileSystemException(
+        '3D模型文件不存在: $filePath\n请确保应用程序已正确初始化3D模型资源',
+        filePath,
+      );
+    }
+
+    return filePath;
+  }
+
+  /// 获取GLTF模型文件路径
+  static Future<String> getGltfModelPath() async {
+    return getModelFilePath('cup/model.gltf');
+  }
+
+  /// 获取BIN模型文件路径
+  static Future<String> getBinModelPath() async {
+    return getModelFilePath('cup/model.bin');
+  }
+
+  /// 获取纹理文件路径
+  static Future<String> getTexturePath() async {
+    return getModelFilePath('cup/texture.jpg');
+  }
+
+  /// 更新纹理文件
+  static Future<void> updateTexture(File newTextureFile) async {
+    try {
+      final texturePath = await getTexturePath();
+      final textureFile = File(texturePath);
+
+      // 删除旧纹理文件
+      if (await textureFile.exists()) {
+        await textureFile.delete();
+      }
+
+      // 复制新纹理文件
+      await newTextureFile.copy(texturePath);
+      print('纹理文件更新成功: $texturePath');
+    } catch (e) {
+      print('更新纹理文件失败: $e');
+      rethrow;
+    }
+  }
+}