index.js

const r = require('request')
const conf = require('commander')
const pkg = require('./package')
const cp = require('child_process')
const fs = require('fs')
const path = require('path')
const progress = require('progress')
const sleep = require('sleep')
const chalk = require('chalk')

conf
  .version(pkg.version)
  .option('-u, --username <username>', 'github username')
  .option('-p, --password <password>', 'github password')
  .option('-d, --domain <domain>'    , 'github host')
  .parse(process.argv)

const getCurrentPage = (currentPage) => {
  r.get({
    url: conf.domain
    ? `http://${conf.username}:${conf.password}@${conf.domain}/api/v3/users/${conf.username}/gists?page=${currentPage}&per_page=100`
    : `https://${conf.username}:${conf.password}@api.github.com/users/${conf.username}/gists?page=${currentPage}&per_page=100`,
    json: true,
    headers: {
      'User-Agent': 'backup-gists',
      'Accept': 'application/vnd.github.v3+json'
    }
  }, (err, res, body) => {

    if (err || res.statusCode !== 200) {
      throw new Error(`
        Failed:
          err: ${err},
          status: ${res && res.statusCode}
          body: ${body}
      `)
    }

    // try make backup dir
    const BACKUP_DIR = `backup-${(new Date()).toString().split(' ')[4].replace(/:/g, '-')}`
    try {
      fs.mkdirSync(BACKUP_DIR)
    } catch (e) {
      if (e.code !== 'EEXIST') throw new Error(`mkdir ${BACKUP_DIR} failed: ${e}`)
    }

    if(! body instanceof Array) {
      throw new TypeError(`unexpected body format: ${typeof body}`)
    }

    console.log(chalk.green(`Download page: ${currentPage}.`))

    const pg = new progress(chalk.green('Backup [:bar] :percent'), {
      complete: '=',
      incomplete: ' ',
      width: 20,
      total: body.length
    })
    pg.tick()

    body.forEach( (gist, idx) => {
      sleep.sleep(1)
      cp.exec(`git clone ${gist.git_pull_url}`, {
        cwd: path.join(__dirname, BACKUP_DIR)
      }, (err, stdout, stderr) => {
        if(err) {
          console.error(chalk.red(`clone  ${gist.git_pull_url} failed: ${err || stderr}`))
        }
      })
      pg.tick()
    })

    if (body.length === 100) {
      getCurrentPage(currentPage+1)
    }

  })
}

getCurrentPage(1)