Build a feature in my Wix website

I need to build one feature in blogs' page of my existing website [login to view URL] "I need that If I attach any file in my blog so user will click on download option to download it. After that we will ask user their name and to provide their email ID to get the file in their email. When user will submit their name and email we will send file download link to their mail. and when they will try to download it by the link we will send in their mail, we will confirm their mail id and file will get downloaded in user device"