node.js - Upload zip files to service for user download -


i have express (node.js) application creates mp3 files user , stores them in folder on server.

the server's file structure looks this:

data/   id#/     song1.mp3     song2.mp3     song3.mp3   id#/     song1.mp3     song2.mp3     song3.mp3   ...

i want create zip files , download links folder , email users zip file. each folder named using id# , corresponds user.

i want use external service (such s3) store , handle downloads of files.

how zip files , send them service , create download links? services should into?

you can use child_process module run zip command in background (this example if you're on linux, can modify suit windows)

this handles zip process, can respond link download file:

var exec = require('child_process').exec;  var currentworkingdirectory = '/data', // folder contains sub folders of id#/     foldertozip             = 'id123123',  // subfolder name id#, e.g. id123123     tmpfolderforzips        = '/tmp/', // folder store zip files in     execstring              = "zip -r " + tmpfolderforzips + foldertozip + ".zip " + foldertozip; // tidy string put console.log(execstring);  var child = exec(execstring, { cwd: currentworkingdirectory });  child.on('error', function(err) {     console.log(err); })  child.on('close', function() {     // respond download link zip file     console.log('done zipping'); });

make sure apt-get install zip


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