How to download folder content from nginx server

[Sargababu]

Hi, I have hosted an nginx server using resty docker base image. Have couple of endpoints expose
one to upload, download, list directory content. What ever files uploaded using upload link to directory need to be download all at once using download option.
With ngx.location.capture of the directory i get the list of files with in directory. How can I pass the file information and content over as http response?

Any help would really be appreciated. :)