TtsBundleFile.fromSource constructor

TtsBundleFile.fromSource(ModelSource source, { required String modelId, })

Creates TtsBundleFile from ModelSource, namespaced by modelId — in practice the owning TtsModelType's name (matcha/kokoro/supertonic).

The source's extracted basename is NOT restore-safe by itself: MobileModelManager._restoreActiveTtsModel reconstructs the spec from a FileSource whose path basename is already the NAMESPACED on-disk name (matcha__config.json), so the extracted basename may be plain (fresh install, e.g. NetworkSource) OR already namespaced (restore). Denamespacing here — symmetric to FileNameUtils.namespaced's idempotent ADD — keeps _plainFilename (and therefore prefsKey) ALWAYS the plain manifest basename either way, so flutter_gemma_speech's paths[profile.configFile] lookup (keyed by the plain name) never breaks on restore.

Implementation

factory TtsBundleFile.fromSource(
  ModelSource source, {
  required String modelId,
}) {
  final extracted = InferenceModelFile._extractFilenameFromSource(source);
  final prefix = '${modelId}__';
  final plain = extracted.startsWith(prefix)
      ? extracted.substring(prefix.length)
      : extracted;
  final filename = FileNameUtils.namespaced(modelId, plain);
  return TtsBundleFile(
    source: source,
    filename: filename,
    plainFilename: plain,
  );
}