完整API模块结构：

client/admin/api/ ├── auth.ts (认证API) ├── users.ts (用户API) ├── files.ts (文件API) ├── theme.ts (主题API) ├── charts.ts (图表API) ├── messages.ts (消息API) ├── sys.ts (系统API) ├── know_info.ts (知识库API) ├── maps.ts (地图API) └── index.ts (统一入口)

client/admin/api/charts.ts

@@ -0,0 +1,68 @@
+import axios from 'axios';
+
+const API_BASE_URL = '/api';
+
+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;
+}
+
+export const ChartAPI = {
+  getUserActivity: async (): Promise<ChartDataResponse<UserActivityData[]>> => {
+    try {
+      const response = await axios.get(`${API_BASE_URL}/charts/user-activity`);
+      return response.data;
+    } catch (error) {
+      throw error;
+    }
+  },
+
+  getFileUploads: async (): Promise<ChartDataResponse<FileUploadsData[]>> => {
+    try {
+      const response = await axios.get(`${API_BASE_URL}/charts/file-uploads`);
+      return response.data;
+    } catch (error) {
+      throw error;
+    }
+  },
+
+  getFileTypes: async (): Promise<ChartDataResponse<FileTypesData[]>> => {
+    try {
+      const response = await axios.get(`${API_BASE_URL}/charts/file-types`);
+      return response.data;
+    } catch (error) {
+      throw error;
+    }
+  },
+
+  getDashboardOverview: async (): Promise<ChartDataResponse<DashboardOverviewData>> => {
+    try {
+      const response = await axios.get(`${API_BASE_URL}/charts/dashboard-overview`);
+      return response.data;
+    } catch (error) {
+      throw error;
+    }
+  }
+};