feat: upload local music directories

frontend/src/api/ingest.ts

@@ -1,4 +1,5 @@
 import request from './request';
+import type { AxiosRequestConfig } from 'axios';
 
 export interface IngestResponse {
   taskId: string;
@@ -59,3 +60,19 @@ export function getIngestCurrentStatus(): Promise<IngestStatusResponse> {
 export function getIngestStatus(taskId: string): Promise<IngestStatusResponse> {
   return request.get(`/api/ingest/status/${taskId}`);
 }
+
+export interface UploadFileResponse {
+  status: 'uploaded' | 'skipped';
+  relativePath: string;
+  size: number;
+}
+
+/**
+ * 上传文件到输入目录
+ */
+export function uploadFile(file: File, relativePath: string, config?: AxiosRequestConfig): Promise<UploadFileResponse> {
+  const formData = new FormData();
+  formData.append('file', file);
+  formData.append('relativePath', relativePath);
+  return request.post('/api/ingest/upload', formData, config);
+}

frontend/src/api/request.ts

@@ -1,12 +1,18 @@
 import axios from 'axios';
 import { ElMessage } from 'element-plus';
 
+export class BusinessError extends Error {
+  code: number;
+  constructor(message: string, code: number) {
+    super(message);
+    this.code = code;
+    this.name = 'BusinessError';
+  }
+}
+
 const request = axios.create({
   baseURL: import.meta.env.VITE_API_BASE_URL ?? 'http://localhost:8080',
-  timeout: 30000,
-  headers: {
-    'Content-Type': 'application/json'
-  }
+  timeout: 30000
 });
 
 // 响应拦截器：统一处理 Result<T> 格式
@@ -21,7 +27,7 @@ request.interceptors.response.use(
       } else {
         // 失败，显示错误信息并 reject
         ElMessage.error(result.message || '请求失败');
-        return Promise.reject(new Error(result.message || '请求失败'));
+        return Promise.reject(new BusinessError(result.message || '请求失败', result.code));
       }
     }
     // 如果不是 Result 格式，直接返回