创建了api目录并拆分为10个功能模块文件

建立了index.ts统一导出
精简了原api.ts文件

client/mobile/api/chart.ts

@@ -0,0 +1,74 @@
+import axios from 'axios';
+
+const API_BASE_URL = '/api';
+
+// 图表数据API接口类型
+interface ChartDataResponse<T> {
+  message: string;
+  data: T;
+}
+
+interface UserActivityData {
+  date: string;
+  count: number;
+}
+
+interface FileUploadsData {
+  month: string;
+  count: number;
+}
+
+interface FileTypesData {
+  type: string;
+  value: number;
+}
+
+interface DashboardOverviewData {
+  userCount: number;
+  fileCount: number;
+  articleCount: number;
+  todayLoginCount: number;
+}
+
+// 图表数据API
+export const ChartAPI = {
+  // 获取用户活跃度数据
+  getUserActivity: async (): Promise<ChartDataResponse<UserActivityData[]>> => {
+    try {
+      const response = await axios.get(`${API_BASE_URL}/charts/user-activity`);
+      return response.data;
+    } catch (error) {
+      throw error;
+    }
+  },
+
+  // 获取文件上传统计数据
+  getFileUploads: async (): Promise<ChartDataResponse<FileUploadsData[]>> => {
+    try {
+      const response = await axios.get(`${API_BASE_URL}/charts/file-uploads`);
+      return response.data;
+    } catch (error) {
+      throw error;
+    }
+  },
+
+  // 获取文件类型分布数据
+  getFileTypes: async (): Promise<ChartDataResponse<FileTypesData[]>> => {
+    try {
+      const response = await axios.get(`${API_BASE_URL}/charts/file-types`);
+      return response.data;
+    } catch (error) {
+      throw error;
+    }
+  },
+
+  // 获取仪表盘概览数据
+  getDashboardOverview: async (): Promise<ChartDataResponse<DashboardOverviewData>> => {
+    try {
+      const response = await axios.get(`${API_BASE_URL}/charts/dashboard-overview`);
+      return response.data;
+    } catch (error) {
+      throw error;
+    }
+  }
+};