add: 新增文件上传功能

web/composables/useFileApi.ts

@@ -0,0 +1,36 @@
+import { useApiFetch } from './useApiFetch'
+
+export const useFileApi = () => {
+  const getFileList = (params?: any) => useApiFetch('/files', { params }).then(parseApiResponse)
+  const uploadFile = (data: FormData) => useApiFetch('/files/upload', { 
+    method: 'POST', 
+    body: data,
+    headers: {
+      // 不设置Content-Type，让浏览器自动设置multipart/form-data
+    }
+  }).then(parseApiResponse)
+  const deleteFiles = (ids: number[]) => useApiFetch('/files', { 
+    method: 'DELETE', 
+    body: { ids } 
+  }).then(parseApiResponse)
+  const updateFile = (data: any) => useApiFetch('/files', { 
+    method: 'PUT', 
+    body: data 
+  }).then(parseApiResponse)
+
+  return {
+    getFileList,
+    uploadFile,
+    deleteFiles,
+    updateFile
+  }
+}
+
+// 解析API响应
+function parseApiResponse(response: any) {
+  if (response.success) {
+    return response
+  } else {
+    throw new Error(response.message || '请求失败')
+  }
+}