vk webapi

gistfile1.txt

//import fetch from 'isomorphic-fetch'
import qs from 'query-string'
const remote = window.require('remote')
const BrowserWindow = remote.require('browser-window')
const fetch = remote.require('isomorphic-fetch')

export default class WebApi {

  constructor(args={}) {
    let defaultConfig = this._getDefaultConfig()
    this._config = {}
    this._baseUrl                 = defaultConfig['base_url']
    this._config['client_id']     = args['client_id']     || defaultConfig['client_id']
    this._config['v']             = args['v']             || defaultConfig['v']
    this._config['scope']         = args['scope']         || defaultConfig['scope']
    this._config['redirect_uri']  = args['redirect_uri']  || defaultConfig['redirect_uri']
    this._config['display']       = args['display']       || defaultConfig['display']
    this._config['response_type'] = args['response_type'] || defaultConfig['response_type']

    this._baseApiCallUrl = 'https://api.vk.com/method/'
  }


  loginUser() {
    return new Promise(  (resolve, reject) => {
      if (!window.sessionStorage.getItem('access_token')) {
        const newWindow = new BrowserWindow({
          width: 1050,
          height: 550,
          'auto-hide-menu-bar': true
        })

        newWindow.loadUrl(this._getFullAuthUrl())

        newWindow.webContents.on('did-finish-load', () => {
          var params = qs.parse(newWindow.webContents.getUrl().split('#')[1])
          if ('access_token' in params) {
            this._saveToken(params['access_token'])
            newWindow.close()
            resolve()
          }
          newWindow.on('close', () => {
            if (!window.sessionStorage.getItem('access_token')) {
                reject(new Error('Login was canceled'))
            }
          })
        })
      } else {
        reject(new Error('User already logined in'))
      }
    })
  }


  checkLoginStatus() {
    if (!!window.sessionStorage.getItem('access_token'))
      return true
    else
      return false
  }


  logoutUser() {
    try {
      const currentWindow = remote.getCurrentWebContents()
      currentWindow.session.clearStorageData(['cookies'], (error, cookies) => {
        console.log(cookies);
      });
      window.sessionStorage.removeItem('access_token');
    } catch(error) {
      throw new Error('something bad happents: ', error)
    }
  }


  getAuthedUser() {
    let access_token = this._getToken()
    let query = qs.stringify({
      fields: 'photo_400_orig,counters',
      access_token
    })
    return fetch(`${this._baseApiCallUrl}users.get?${query}`)
  }


  getFriends(order='hints', name_case='nom', fields='photo_100') {
    let access_token = this._getToken()
    let query = qs.stringify({
      order,
      name_case,
      fields,
      access_token
    })
    return fetch(`${this._baseApiCallUrl}friends.get?${query}`)
  }






/*===============================================================*/
/*======================== Private ==============================*/
/*===============================================================*/

  _getDefaultConfig() {
    return {
      'base_url': 'https://oauth.vk.com/authorize',
      'client_id': '5120154',
      'v': 'v=5.37',
      'scope': '2810242621444096',
      'redirect_uri': 'https://oauth.vk.com/blank.html',
      'display': 'page',
      'response_type': 'token',
      'full_ulr': 'https://oauth.vk.com/authorize?client_id=5120154&v=5.37&redirect_uri=https://oauth.vk.com/blank.html&display=page&response_type=token&scope=2810242621444096'
    }
  }

  _getFullAuthUrl() {
    let query = qs.stringify(this._config)
    return `${this._baseUrl}?${query}`
  }

  _saveToken(token) {
    window.sessionStorage.setItem('access_token', token)
  }

  _getToken() {
    return window.sessionStorage.getItem('access_token')
  }
}