refactor(projects): 请求函数重构初步

src/service/request/helpers/transform.ts

@@ -0,0 +1,40 @@
+import qs from 'qs';
+import FormData from 'form-data';
+import { isArray } from '@/utils';
+import { ContentType } from '@/enum';
+
+export async function transformRequestData(requestData: any, contentType?: string) {
+  // application/json类型不处理
+  let data = requestData;
+  // form类型转换
+  if (contentType === ContentType.formUrlencoded) {
+    data = qs.stringify(requestData);
+  }
+  // form-data类型转换
+  if (contentType === ContentType.formData) {
+    const key = Object.keys(requestData)[0];
+    const file = requestData.data[key];
+    data = await transformFile(file, key);
+  }
+  return data;
+}
+
+/**
+ * 接口为上传文件的类型时数据转换
+ * @param file - 单文件或多文件
+ * @param key - 文件的属性名
+ */
+async function transformFile(file: File[] | File, key: string) {
+  const formData = new FormData();
+  if (isArray(file)) {
+    await Promise.all(
+      (file as File[]).map(item => {
+        formData.append(key, item);
+        return true;
+      })
+    );
+  } else {
+    await formData.append(key, file);
+  }
+  return formData;
+}