tunnckoCore/github-clone-labels

/*!
 * github-clone-labels <https://github.com/tunnckoCore/github-clone-labels>
 *
 * Copyright (c) 2016 Charlike Mike Reagent <@tunnckoCore> (http://www.tunnckocore.tk)
 * Released under the MIT license.
 */

'use strict'

var assert = require('assert')
var ctrl = require('async')
var get = require('simple-get')

/**
 * > Clone labels of `opts.src` repository to
 * some `opts.dest` repository. Pattern is `username/repo`.
 * You also can provide `opts.token` for auth.
 *
 * **Example**
 *
 * ```js
 * var clone = require('github-clone-labels')
 *
 * clone({
 *   src: 'tunnckoCore/gruu',
 *   dest: 'node-minibase/minibase',
 *   token: '...'
 * }, function done (err, res) {
 *   if (err) return console.error(err.stack)
 *
 *   console.log(res)
 *   // => array of created labels at `opts.dest`
 * })
 * ```
 *
 * @param  {Object}   `<opts>`
 * @param  {Function} `<cb>`
 * @api public
 */

module.exports = function githubCloneLabels (opts, cb) {
  assert.strictEqual(opts && typeof opts, 'object', 'expect `src` to be a object')
  assert.strictEqual(typeof cb, 'function', 'expect `cb` to be a function')

  var api = 'https://api.github.com/repos'
  var headers = {
    'user-agent': 'https://github.com/tunnckoCore/github-clone-labels',
    authorization: opts.token ? `token ${opts.token}` : opts.auth
  }

  get.concat({
    json: true,
    headers: headers,
    url: `${api}/${opts.src}/labels`
  }, function callback (e, res, data) {
    if (res.statusCode !== 200) {
      return handleErrors(res, data, cb)
    }

    ctrl.mapSeries(data, function (label, next) {
      get.concat({
        method: 'POST',
        json: true,
        headers: headers,
        url: `${api}/${opts.dest}/labels`,
        body: label
      }, function (er, response, json) {
        if (response.statusCode !== 201) {
          return handleErrors(response, json, next)
        }
        next(null, json, response)
      })
    }, cb)
  })
}

function handleErrors (resp, json, callback) {
  var err = new Error(json.message + ' ' + resp.statusCode)
  err.data = json
  err.res = resp
  callback(err)
}