Firebase functions image download URL issues - google-cloud-functions

Question

I am making a thumbnail image using firebase functions, however, I tried two approaches to get the downloadURL of the resulted image but both I have different problems:
The first approach: I used the code below
const signedUrls = await bucket.file(thumbFilePath).getSignedUrl({
action: "read",
expires: "03-09-2491"
});
For this approach after some days, the url is no more valid even though the expiration date is very far, I couldn't find a proper solution and in meanwhile, I found another approach so I tried it.
the second approach: I used the code below
// Uploading the thumbnail than make it public to be able to access it.
await bucket.upload(tempFilePath_des, {
destination: thumbFilePath,
metadata: metadata
});
await storage
.bucket(fileBucket)
.file(thumbFilePath)
.makePublic();
thumbURL =
"https://storage.cloud.google.com/" + fileBucket + "/" + thumbFilePath;
This approach works well when I use Google Auth, but when I use email auth the following error is thrown:
Cross-Origin Read Blocking (CORB) blocked cross-origin response
with MIME type text/html. See for more details.
Please, Any help?

Answer 1

I found another approach that seems to be working in this post
when uploading the image we need to give it a UUID or we can retrieve it if we want from the metadata of the file using the following
const [metadata] = await storage.bucket(fileBucket).file(filePath).getMetadata();
const uuid = metadata.metadata.firebaseStorageDownloadTokens
than we construct our URL, here my working code:
const UUID = require('uuid/v4');
let uuid = UUID()
await bucket.upload(tempFilePath_des, {
destination: thumbFilePath,
metadata : {
contentType: metdata.contentType,
metadata: {
firebaseStorageDownloadTokens: uuid
}
}
});
thumbURL =
"https://firebasestorage.googleapis.com/v0/b/" + fileBucket + "/o/" + encodeURIComponent(thumbFilePath) + "?alt=media&token=" + uuid;