Uploading a file from remote url using shrine? | GoRails

Hi,
I need to upload a remote file to my S3 bucket (e.g., I get a link to a pdf e-ticket and I need to upload it from its location). In addition (as a bonus) what’s the best way to allow users to download these pdf’s from my s3 bucket? is there a way to bundle few pdfs into one download (e.g., allow a user to download multiple stored e-tickets with one button click)

I looked into shrine and it’s plugin ecosystem but I wasn’t able to tell which one to use…

Any idea how to accomplish this? shrine is not mandatory, but would be nice. I saw that paperclip has something with remote url but I prefer Shrine as I want to use it for other tasks as well.

Thanks,
Roy