download-from-courshunter.js

const fs = require('fs');
const https = require('https');
const rp = require('request-promise-native');
const cheerio = require('cheerio');


const userCreds = {
  e_mail: '',
  password: ''
};
const headers = {
  'Host': 'coursehunter.net',
  'User-Agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:71.0) Gecko/20100101 Firefox/71.0',
  'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
  'Accept-Language': 'ru-RU,ru;q=0.9,en-US;q=0.8,en;q=0.7',
  'Origin': ' https://coursehunter.net',
  'Connection': ' keep-alive',
  'Referer': 'https://coursehunter.net/',
  'Upgrade-Insecure-Requests': '1',
};
const loginUrl = 'https://coursehunter.net/sign-in';
const courseUrl = 'https://coursehunter.net/course/node-js-prodvinutye-temy';


function login() {
  const options = {
    url:loginUrl,
    headers: { ...headers, 'Content-Type': 'application/x-www-form-urlencoded' },
    form: userCreds,
    resolveWithFullResponse: true,
    simple: false
  };

  return rp.post(options);
}

function getPage(cookie) {
  const options = {
    url:courseUrl,
    headers: { ...headers, 'Cookie': cookie },
  };

  return rp.get(options);
}


function setCookies(res){
  const cookie = ['locale=ru'].concat(res.headers['set-cookie']);
  return cookie.join('; ');
}

async function saveVideo(link){
  const fileName = link.split('/').pop();
  const file = fs.createWriteStream(fileName);

  return new Promise((resolve, reject) => {
    https.get(link, function(response) {
      response.pipe(file);
      resolve();
    }).on('error', (e) => {
      reject(e);
    });
  });

}


async function main() {
  const res = await login();
  const cookie = setCookies(res);
  const page = await getPage(cookie);
  const $ = cheerio.load(page);
  const links = $('link[itemprop=contentUrl]');
  for (const i in links){
    await saveVideo(links[i].attribs.href);
  }
  console.log(links);
}

main().then(console.log).catch(console.error);