feat(approval): 单据查询导出按钮 (#26)

src/api/approval/instance/index.ts

@@ -1,6 +1,7 @@
 import request from '@/utils/request';
 import type { ApiResult, PageResult } from '@/api';
 import type {
+  ApprovalExportFile,
   ApprovalInstance,
   ApprovalItem,
   ApprovalQueryParam
@@ -33,3 +34,17 @@ export async function getInstance(id: number) {
   }
   return Promise.reject(new Error(res.data.message));
 }
+
+/**
+ * 导出单据（返回完整结果，含文件下载地址）
+ */
+export async function exportInstances(data: ApprovalQueryParam) {
+  const res = await request.post<ApiResult<ApprovalExportFile>>(
+    THINK_API_URL + '/approval/export',
+    data
+  );
+  if (res.data.code === 0) {
+    return res.data;
+  }
+  return Promise.reject(new Error(res.data.message));
+}