32 lines
1.1 KiB
Dart
32 lines
1.1 KiB
Dart
import 'package:flutter_riverpod/flutter_riverpod.dart';
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import '../api/account_api.dart';
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import '../core/network/api_exception.dart';
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import '../models/account.dart';
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/// 账户信息（余额 / 总收入 / 总支出）
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class AccountNotifier extends AsyncNotifier<AccountInfo> {
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@override
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Future<AccountInfo> build() => ref.watch(accountApiProvider).getAccount();
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/// 把账户余额改成 [targetBalance]。
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///
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/// 后端只能写期初余额，所以这里先反算：
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/// `initialBalance = targetBalance - totalIncome + totalExpense`
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Future<void> setBalance(double targetBalance) async {
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final current = state.value;
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if (current == null) throw ApiException(-1, '账户信息尚未加载完成');
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final initial = initialBalanceFor(
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targetBalance: targetBalance,
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totalIncome: current.totalIncome,
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totalExpense: current.totalExpense,
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);
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final updated = await ref.read(accountApiProvider).updateBalance(initial);
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state = AsyncData(updated);
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}
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}
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final accountProvider =
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AsyncNotifierProvider<AccountNotifier, AccountInfo>(AccountNotifier.new);
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