50 lines
1.7 KiB
Dart
50 lines
1.7 KiB
Dart
import 'package:flutter_riverpod/flutter_riverpod.dart';
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import '../api/bill_api.dart';
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import '../api/statistics_api.dart';
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import '../models/bill.dart';
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import '../models/statistics_response.dart';
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import '../utils/date_util.dart';
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/// 首页选中的月份锚点（该月 1 日 00:00）。
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/// 切换月份只改这一个状态，依赖它的列表与汇总会自动换 key 重新取数。
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class MonthAnchorNotifier extends Notifier<DateTime> {
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@override
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DateTime build() => monthStart(DateTime.now());
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bool get canGoNext => state.isBefore(monthStart(DateTime.now()));
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void prev() => state = shiftMonth(state, -1);
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/// 下一月，不允许超过当前月
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void next() {
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final target = shiftMonth(state, 1);
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if (target.isAfter(monthStart(DateTime.now()))) return;
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state = target;
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}
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/// 选中某一天所在的月份
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void pick(DateTime anyDayInMonth) => state = monthStart(anyDayInMonth);
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}
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final monthAnchorProvider =
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NotifierProvider<MonthAnchorNotifier, DateTime>(MonthAnchorNotifier.new);
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/// 某月的账单列表（key = 月份锚点）
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final billsProvider = FutureProvider.autoDispose.family<List<Bill>, DateTime>((ref, month) {
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return ref.watch(billApiProvider).getBills(
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startDate: formatDate(monthStart(month)),
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endDate: formatDate(monthEnd(month)),
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);
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});
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/// 某月的统计（首页汇总卡用），与列表共用同一个月份 key
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final monthlyStatisticsProvider =
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FutureProvider.autoDispose.family<StatisticsResponse, DateTime>((ref, month) {
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return ref.watch(statisticsApiProvider).getMonthly(year: month.year, month: month.month);
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});
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/// 账单详情
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final billDetailProvider =
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FutureProvider.autoDispose.family<Bill, int>((ref, id) => ref.watch(billApiProvider).getBill(id));
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