Delete file from server after downloading on client

[CZOnCec]

Hello,
I have case where I upload file to server, do edits in copy of the file and provide edited copy of the file to the user, who downloads the file to his machine. I'm able to delete the original file from the server when the copy is created, but how can I delete the file from server after user clicks download button? There is no action on ui.link() or ui.button() when parameter path is set

q.page["downloadcard"] =ui.form_card(
    box="1 10 -1 1",
    items=[
        ui.button(name="download_butotn", label="Download File",primary=True,path=q.client.download_link[0]),
        ui.link(name="download_link", label="Download File",button=True,path=q.client.download_link[0])
    ]
)
if q.args.download:
    #does not work
    await q.site.unload(q.client.download_link[0])
    os.remove(q.client.file_name_modified)