getModelFilePaths method

Implementation

@override
Future<Map<String, String>?> getModelFilePaths(ModelSpec spec) async {
  await _ensureInitialized();

  // Phase 5: Delegate to Modern API
  final registry = ServiceRegistry.instance;
  final repository = registry.modelRepository;
  final fileSystem = registry.fileSystemService as WebFileSystemService;

  // Check installation via repository
  bool allFilesInstalled = true;
  for (final file in spec.files) {
    if (!await repository.isInstalled(file.filename)) {
      allFilesInstalled = false;
      break;
    }
  }

  if (!allFilesInstalled) {
    return null;
  }

  final filePaths = <String, String>{};

  for (final file in spec.files) {
    // Get URL from WebFileSystemService based on source type
    final String path;

    if (file.source is NetworkSource) {
      // Web: Get registered URL
      path = fileSystem.getUrl(file.filename) ?? (file.source as NetworkSource).url;
    } else if (file.source is BundledSource) {
      // Web: Bundled resources
      path = await fileSystem.getBundledResourcePath((file.source as BundledSource).resourceName);
    } else if (file.source is AssetSource) {
      // Web: Asset path
      path = (file.source as AssetSource).normalizedPath;
    } else if (file.source is FileSource) {
      // Web: External URL or registered path
      final fileSource = file.source as FileSource;
      path = fileSystem.getUrl(file.filename) ?? fileSource.path;
    } else {
      // Fallback: use getTargetPath
      path = await fileSystem.getTargetPath(file.filename);
    }

    filePaths[file.prefsKey] = path;
  }

  return filePaths.isNotEmpty ? filePaths : null;
}