createEmbeddingModel method

@override Future<EmbeddingModel> createEmbeddingModel({ String? modelPath, String? tokenizerPath, PreferredBackend? preferredBackend, })

Creates and returns a new EmbeddingModel instance.

Modern API: If paths are not provided, uses the active embedding model set via FlutterGemma.installEmbedder() or modelManager.setActiveModel().

Legacy API: Provide explicit paths for backward compatibility.

modelPath — path to the embedding model file (optional if active model set). tokenizerPath — path to the tokenizer file (optional if active model set). preferredBackend — backend preference (e.g., CPU, GPU).

Implementation

@override
Future<EmbeddingModel> createEmbeddingModel({
  String? modelPath,
  String? tokenizerPath,
  PreferredBackend? preferredBackend,
}) async {
  // Modern API: Use active embedding model if paths not provided
  if (modelPath == null || tokenizerPath == null) {
    // Web: Embedding models not fully supported yet, but keep API consistent
    if (modelManager.activeEmbeddingModel == null) {
      throw StateError(
          'No active embedding model set. Use `FlutterGemma.installEmbedder()` or `modelManager.setActiveModel()` to set a model first');
    }

    // TODO: Implement full embedding model support on web
    throw UnimplementedError('Embedding models are not fully supported on web platform yet');
  }

  final model = _initializedEmbeddingModel ??= WebEmbeddingModel(
    onClose: () {
      _initializedEmbeddingModel = null;
    },
  );
  return Future.value(model);
}