feat: manually mirror opencoze's code from bytedance

Change-Id: I09a73aadda978ad9511264a756b2ce51f5761adf

frontend/packages/workflow/adapter/base/src/utils/get-upload-cdn-asset.ts

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2025 coze-dev Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+ 
+/**
+ * get asset upload cdn address
+ * @param assetName asset name
+ * @returns asset name with cdn address
+ */
+export function getUploadCDNAsset(assetName: string) {
+  // If the `UPLOAD_CDN` environment variable exists, use it
+  if (UPLOAD_CDN) {
+    return `${UPLOAD_CDN}/${assetName}`;
+  }
+
+  throw new Error('The UPLOAD_CDN environment variable is not configured');
+}