stack_wallet/lib/wallets/isar/providers/favourite_wallets_provider.dart
2023-11-08 15:43:01 -06:00

60 lines
1.5 KiB
Dart

import 'dart:async';
import 'package:flutter/foundation.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:isar/isar.dart';
import 'package:stackwallet/providers/db/main_db_provider.dart';
import 'package:stackwallet/wallets/isar/models/wallet_info.dart';
class _Watcher extends ChangeNotifier {
final bool isFavourite;
late final StreamSubscription<List<WalletInfo>> _streamSubscription;
List<WalletInfo> _value;
List<WalletInfo> get value => _value;
_Watcher(this._value, this.isFavourite, Isar isar) {
_streamSubscription = isar.walletInfo
.filter()
.isFavouriteEqualTo(isFavourite)
.sortByFavouriteOrderIndex()
.watch(fireImmediately: true)
.listen((event) {
_value = event;
notifyListeners();
});
}
@override
void dispose() {
_streamSubscription.cancel();
super.dispose();
}
}
final _wiProvider = ChangeNotifierProvider.family<_Watcher, bool>(
(ref, isFavourite) {
final isar = ref.watch(mainDBProvider).isar;
final watcher = _Watcher(
isar.walletInfo
.filter()
.isFavouriteEqualTo(isFavourite)
.sortByFavouriteOrderIndex()
.findAllSync(),
isFavourite,
isar,
);
ref.onDispose(() => watcher.dispose());
return watcher;
},
);
final pFavouriteWalletInfos = Provider.family<List<WalletInfo>, bool>(
(ref, isFavourite) {
return ref.watch(_wiProvider(isFavourite)).value;
},
);