install method

  1. @override
Future<void> install(
  1. ModelSource source
)
override

Installs the model from the given source

This method performs the actual installation:

  • NetworkSource: downloads from URL
  • AssetSource: copies from Flutter assets
  • BundledSource: accesses native resources
  • FileSource: registers external file path

Throws:

  • UnsupportedError if this handler doesn't support the source type
  • ArgumentError if the source is invalid
  • Platform-specific exceptions for download/file errors

Implementation

@override
Future<void> install(ModelSource source) async {
  if (source is! FileSource) {
    throw ArgumentError('FileSourceHandler only supports FileSource');
  }

  // Verify external file exists
  final exists = await fileSystem.fileExists(source.path);
  if (!exists) {
    throw Exception('External file does not exist: ${source.path}');
  }

  // Generate unique filename for tracking
  final filename = path.basename(source.path);

  // Register external file in file system
  await fileSystem.registerExternalFile(filename, source.path);

  // Protect file from cleanup operations
  await protectedFiles.protect(filename);

  // Register external path mapping
  await protectedFiles.registerExternalPath(filename, source.path);

  // Get file size for metadata
  final sizeBytes = await fileSystem.getFileSize(source.path);

  // Save metadata to repository
  final modelInfo = ModelInfo(
    id: filename,
    source: source,
    installedAt: DateTime.now(),
    sizeBytes: sizeBytes,
    type: ModelType.inference,
    hasLoraWeights: false,
  );

  await repository.saveModel(modelInfo);
}