locorda_solid

Solid Pod backend and authentication for locorda CRDT synchronization.

Features

✅ Solid Pod Backend: Store RDF resources in any Solid-compliant Pod
✅ OIDC Authentication: DPoP-secured access via solid_oidc_auth
✅ Login UI: Provider selection and login screens out of the box
✅ Worker Support: Network I/O and DPoP signing run in isolate/web worker
✅ File-Per-Resource Layout: Each RDF resource maps to a Solid document — fully linked-data interoperable
⚠️ Platform: Flutter only (requires flutter: '>=3.24.0')

Known limitation

Solid's HTTP protocol has no batch-write primitive. Every save requires an individual PUT/PATCH request. For high-throughput use cases, prefer locorda_gdrive with the SingleFile or ShardDataset layout. Technically, you can use both SingleFile and ShardDataset with Solid Pods as well, but you will not take part in Solids linked data concept then and the RDF Dataset TriG files stored will be a BLOB as far as Solid is concerned.

Installation

flutter pub add locorda locorda_solid
flutter pub add dev:build_runner dev:locorda_dev

Usage

1. Run code generation

dart run build_runner build

locorda_dev discovers locorda_solid via its worker manifest and automatically includes SolidWorkerHandler in the generated worker_generated.g.dart — no manual worker code needed.

2. Initialize on the main thread

import 'package:locorda/locorda.dart';
import 'package:locorda_solid/locorda_solid.dart';
import 'init_locorda.g.dart';  // generated

final locorda = await initLocorda(
  storage: DriftMainHandler(),
  remotes: [
    await SolidMainIntegration.create(
      oidcClientId: 'https://your-app.example/auth/client-config.json',
      appUrlScheme: 'com.example.yourapp',
      frontendRedirectUrl: Uri.parse('https://your-app.example/redirect.html'),
    ),
  ],
);

SolidConfig() is optional — pass it to customise storage layout or paths.

AppBar(
  actions: [
    MultiBackendStatusWidget(
      registry: locorda.uiAdapterRegistry,
      syncManager: locorda.syncManager,
    ),
  ],
)

## Further reading

- [locorda package](../locorda) — high-level API and getting started guide
- [locorda_gdrive](../locorda_gdrive) — alternative backend with better write throughput