library syncbase_client;

import 'dart:async';
import 'dart:typed_data' show Uint8List;

import 'package:mojo/application.dart' show Application;

import 'gen/dart-gen/mojom/lib/mojo/syncbase.mojom.dart' as mojom;

// Export struct types from syncbase.mojom.
export 'gen/dart-gen/mojom/lib/mojo/syncbase.mojom.dart'
    show BatchOptions, Perms, SyncGroupMemberInfo, SyncGroupSpec;

part 'src/app.dart';
part 'src/named_resource.dart';
part 'src/nosql/database.dart';
part 'src/nosql/row.dart';
part 'src/nosql/syncgroup.dart';
part 'src/nosql/table.dart';

bool isError(mojom.Error err) {
  return err != null && err.id != '';
}

// TODO(nlacasse): Write some tests for this interface now that syncbase runs
// as a mojo service.  Currently we rely on dartanalyzer for correctness.

class SyncbaseClient {
  final Application _mojoApp;
  final mojom.SyncbaseProxy _proxy;
  final String url;

  SyncbaseClient(this._mojoApp, this.url)
      : _proxy = new mojom.SyncbaseProxy.unbound() {
    print('connecting to $url');
    _mojoApp.connectToService(url, _proxy);
    print('connected');
  }

  // Closes the connection to the syncbase server.
  // TODO(nlacasse): Is this necessary?
  Future close({bool immediate: false}) {
    return _proxy.close();
  }

  // app returns the app with the given name, which should not contain slashes.
  SyncbaseApp app(String name) => new SyncbaseApp._internal(_proxy, name);

  Future<mojom.Perms> getPermissions() async {
    var v = await _proxy.ptr.serviceGetPermissions();
    if (isError(v.err)) throw v.err;

    // TODO(nlacasse): We need to return the version too.  Create a struct type
    // that combines perms and version?
    return v.perms;
  }

  Future setPermissions(mojom.Perms perms, String version) async {
    var v = await _proxy.ptr.serviceSetPermissions(perms, version);
    if (isError(v.err)) throw v.err;
    return;
  }
}