// Download electron prebuild tarball via node (follows redirects)
const https = require('https');
const fs = require('fs');
const path = require('path');

const url = process.argv[2];
const out = process.argv[3];

function download(u, cb) {
  https.get(u, { headers: { 'User-Agent': 'node' } }, (res) => {
    if ([301, 302, 303, 307, 308].includes(res.statusCode)) {
      return download(res.headers.location, cb);
    }
    if (res.statusCode !== 200) {
      return cb(new Error('HTTP ' + res.statusCode));
    }
    const ws = fs.createWriteStream(out);
    res.pipe(ws);
    ws.on('finish', () => ws.close(() => cb(null)));
    ws.on('error', cb);
  }).on('error', cb);
}

download(url, (err) => {
  if (err) {
    console.error('download failed:', err.message);
    process.exit(1);
  }
  console.log('downloaded:', out, fs.statSync(out).size, 'bytes');
});