107 lines
3.5 KiB
Dart
107 lines
3.5 KiB
Dart
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import '../models/device.dart';
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import '../services/device_service.dart';
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import '../services/org_service.dart';
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import '../utils/session_org_scope.dart';
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import 'devices_provider.dart';
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/// 仪表盘统计数据。
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class DashboardStats {
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const DashboardStats({
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this.deviceTotal = 0,
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this.storeTotal = 0,
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this.onlineCount = 0,
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this.offlineCount = 0,
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});
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final int deviceTotal;
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final int storeTotal;
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final int onlineCount;
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final int offlineCount;
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DashboardStats copyWith({
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int? deviceTotal,
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int? storeTotal,
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int? onlineCount,
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int? offlineCount,
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}) {
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return DashboardStats(
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deviceTotal: deviceTotal ?? this.deviceTotal,
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storeTotal: storeTotal ?? this.storeTotal,
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onlineCount: onlineCount ?? this.onlineCount,
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offlineCount: offlineCount ?? this.offlineCount,
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);
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}
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}
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/// 仪表盘统计状态。
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class DashboardStatsNotifier extends StateNotifier<DashboardStats> {
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DashboardStatsNotifier(this._deviceService, this._orgService)
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: super(const DashboardStats());
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final DeviceService _deviceService;
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final OrgService _orgService;
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Future<void> load() async {
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try {
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int deviceTotal = 0;
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int onlineCount = 0;
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int offlineCount = 0;
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if (SessionOrgScope.instance.enabled) {
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// 受限账号：仅统计其组织子树内的设备。
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// 设备接口可能忽略 orgId，故改为「拉取列表 + 按 storeId 在范围内收敛」，
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// 杜绝跨组织设备越权统计（只会少计、不会多计或泄露其他组织数据）。
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final ids = await _orgService.scopedOrgIdSet();
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if (ids.isNotEmpty) {
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final devices = await _deviceService.fetchDevices(limit: 1000);
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final scoped =
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devices.where((d) => ids.contains(d.storeId)).toList();
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deviceTotal = scoped.length;
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onlineCount =
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scoped.where((d) => d.status == DeviceStatus.online).length;
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offlineCount =
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scoped.where((d) => d.status == DeviceStatus.offline).length;
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}
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} else {
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deviceTotal = await _deviceService.fetchDeviceTotalCount();
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// 若后端未返回 totalCount，则拉取一页列表用其长度兜底。
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if (deviceTotal <= 0) {
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final devices = await _deviceService.fetchDevices(limit: 100);
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deviceTotal = devices.length;
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}
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// 在线/离线：分别按 status 拉 totalCount（O(1)，无需遍历全量设备）。
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final results = await Future.wait<int>([
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_deviceService.fetchDeviceCountByStatus(status: 'online'),
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_deviceService.fetchDeviceCountByStatus(status: 'offline'),
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]);
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onlineCount = results[0];
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offlineCount = results[1];
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}
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// 门店总数：优先组织树，失败回退门店接口（fetchStoreCount 内部已含回退链）。
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final storeTotal = await _orgService.fetchStoreCount();
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state = state.copyWith(
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deviceTotal: deviceTotal,
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storeTotal: storeTotal,
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onlineCount: onlineCount,
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offlineCount: offlineCount,
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);
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} catch (_) {
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// 统计失败不阻断页面，保持旧值或 0。
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}
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}
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}
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final orgServiceProvider = Provider<OrgService>((ref) => OrgService());
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final dashboardStatsProvider =
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StateNotifierProvider<DashboardStatsNotifier, DashboardStats>(
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(ref) => DashboardStatsNotifier(
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ref.watch(deviceServiceProvider),
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ref.watch(orgServiceProvider),
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),
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);
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