client.js

const yargs = require('yargs');
const Configstore = require('configstore');
const request = require('request-promise');
const fs = require('fs');

let jsonRequest = request.defaults({
  json: true
});

const argv = yargs.usage('$0 <cmd> [args]')
.command('target <url>', 'choose a target', {})
.command('current', 'get a target', {})
.command('create', 'create new locker', {})
.command('delete <id>', 'delete new locker', {})
.command('list <id>', 'list files in locker', {})
.command('upload <id> <file> <handle>', 'upload file to locker', {})
.command('download <id> <handle> <file>', 'download file from locker', {})
.help().argv;

const conf = new Configstore('courselocker', {});

async function run (argv) {
  const command = argv._[0];
  if (command === 'target') {
    conf.set('url', argv.url);
    console.log(`Targetting ${argv.url}`);
  } else if (command === 'current') {
    console.log(`Targetting ${conf.get('url')}`);
  } else if (command === 'create') {
    const locker = await jsonRequest.post(`${conf.get('url')}/`);
    console.log(locker.id);
  } else if (command === 'delete') {
    const locker = await jsonRequest.delete(`${conf.get('url')}/${argv.id}`);
    console.log(locker);
  } else if (command === 'list') {
    const listResponse = await jsonRequest.get(`${conf.get('url')}/${argv.id}/items`);
    for (let file of listResponse) {
      console.log(file);
    }
  } else if (command === 'upload') {
    const file = fs.createReadStream(argv.file);
    const upload = jsonRequest.post(`${conf.get('url')}/${argv.id}/item/${argv.handle}`);

    file.pipe(upload);

    const response = await upload;
    console.log(response);
  } else if (command === 'download') {
    const file = fs.createWriteStream(argv.file);
    const download = jsonRequest.get(`${conf.get('url')}/${argv.id}/item/${argv.handle}`);

    download.pipe(file);

    await download;
    console.log('Downloaded');
  } else {
    console.log(`Command ${command} doesn't exist`);
  }
}
run(argv);