158 lines
4.5 KiB
TypeScript
158 lines
4.5 KiB
TypeScript
// 统计服务 - 处理系统统计数据获取和缓存
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import apiService from './apiService';
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/**
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* 统计数据接口
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*/
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export interface StatisticsData {
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employeeCount: number; // 员工总数
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orderCount: number; // 订单总数
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warehouseCount: number; // 仓库总数
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pendingOrders: number; // 待处理订单数
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activeOrders: number; // 进行中订单数
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completedOrders: number; // 已完成订单数
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timestamp: number; // 数据时间戳
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}
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/**
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* 统计服务类
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* 提供系统统计数据的获取和缓存功能
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*/
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class StatisticsService {
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// 数据缓存
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private cache: StatisticsData | null = null;
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// 缓存超时时间（5分钟）
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private readonly cacheTimeout = 5 * 60 * 1000;
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/**
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* 获取系统统计数据
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* 采用一个API请求获取三个统计数据，后续操作客户端自行统计
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* @param forceRefresh 是否强制刷新，不使用缓存
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*/
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async getSystemStats(forceRefresh: boolean = false): Promise<StatisticsData> {
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// 检查缓存是否有效，且不强制刷新
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if (!forceRefresh && this.cache && Date.now() - this.cache.timestamp < this.cacheTimeout) {
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console.log('使用缓存的统计数据');
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return this.cache;
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}
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console.log('重新获取统计数据');
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try {
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// 使用系统统计API获取三个统计数据
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const systemStats = await this.getSystemStatsFromAPI();
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this.cache = {
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...systemStats,
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timestamp: Date.now()
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};
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return this.cache;
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} catch (error) {
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console.warn('系统统计API不可用，使用默认值:', error);
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// 如果API不可用，返回默认值
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this.cache = {
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employeeCount: 0,
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orderCount: 0,
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warehouseCount: 0,
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pendingOrders: 0,
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activeOrders: 0,
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completedOrders: 0,
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timestamp: Date.now()
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};
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return this.cache;
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}
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}
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/**
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* 从API获取系统统计数据
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*/
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private async getSystemStatsFromAPI(): Promise<StatisticsData> {
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try {
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// 调用系统统计API
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const response = await apiService.getSystemStats();
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console.log('API返回的统计数据:', response);
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// API返回的数据结构是 { data: { ... }, success: true }
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// 需要提取data字段中的数据
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const stats = (response as any).data || response;
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console.log('提取的统计数据:', stats);
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// 转换API响应格式为StatisticsData格式
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// 根据API实际返回的字段进行映射
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const result = {
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employeeCount: stats.totalEmployees || stats.totalDeliveryPersons || 0,
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orderCount: stats.totalOrders || (stats.pendingOrders || 0) + (stats.activeOrders || 0),
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warehouseCount: stats.totalWarehouses || 0,
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pendingOrders: stats.pendingOrders || 0,
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activeOrders: stats.activeOrders || 0,
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completedOrders: 0, // 需要从其他接口获取
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timestamp: Date.now()
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};
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console.log('转换后的统计数据:', result);
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return result;
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} catch (error) {
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console.error('获取系统统计数据失败:', error);
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throw error;
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}
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}
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/**
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* 手动刷新统计数据（清除缓存）
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*/
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refreshStats(): void {
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this.cache = null;
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console.log('统计数据缓存已清除');
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}
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/**
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* 获取缓存状态
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*/
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getCacheStatus(): { hasCache: boolean; isExpired: boolean; age: number } {
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if (!this.cache) {
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return { hasCache: false, isExpired: true, age: 0 };
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}
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const age = Date.now() - this.cache.timestamp;
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const isExpired = age > this.cacheTimeout;
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return { hasCache: true, isExpired, age };
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}
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/**
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* 客户端更新统计数据（直接传值更新）
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* @param type 数据类型：'employee' | 'order' | 'warehouse'
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* @param count 对应的数量值
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*/
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updateStats(type: 'employee' | 'order' | 'warehouse', count: number): void {
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if (!this.cache) {
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console.warn('没有缓存数据，无法更新统计');
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return;
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}
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switch (type) {
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case 'employee':
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this.cache.employeeCount = Math.max(0, count);
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break;
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case 'order':
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this.cache.orderCount = Math.max(0, count);
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break;
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case 'warehouse':
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this.cache.warehouseCount = Math.max(0, count);
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break;
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}
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this.cache.timestamp = Date.now();
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console.log(`统计数据已更新: ${type} = ${count}`);
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}
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}
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/**
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* 统计服务单例实例
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* 导出供应用程序全局使用
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*/
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export default new StatisticsService(); |