vLEB92ma

1'use strict';
2
3import Promise from 'bluebird';
4import getUrlParameter from 'getUrlParameter';
5
6const getCurrentUrl = Symbol('getCurrentUrl');
7const isOauthResponseAvailable = Symbol('isOauthResponseAvailable');
8const getOauthResponse = Symbol('getOauthResponse');
9const observeUrlChanges = Symbol('observeUrlChanges');
10
11
12class TwitterAuthorization {
13  constructor() {
14    this.windowHandler = null;
15    this.windowName = 'twitterAuthorize';
16    this.authorizationUrl = '/twitter/authorize';
17    this.windowOptions = 'width=548,height=325';
18    this.oAuthResponsePromiseResolveFunction = null;
19    this.oAuthResponsePromiseRejectFunction = null;
20
21    this.oAuthResponsePromise = new Promise((resolve, reject) => {
22      this.oAuthResponsePromiseResolveFunction = resolve;
23      this.oAuthResponsePromiseRejectFunction = reject;
24    });
25  }
26
27  authorize() {
28    this.windowHandler = window.open(this.authorizationUrl, this.windowName, this.windowOptions);
29    this[observeUrlChanges]();
30
31    return this.oAuthResponsePromise;
32  }
33
34  [observeUrlChanges]() {
35    if (this[isOauthResponseAvailable]()) {
36      this.oAuthResponsePromiseResolveFunction(this[getOauthResponse]());
37      this.windowHandler.close();
38    }
39
40    if (!this.windowHandler || this.windowHandler.closed) {
41      this.oAuthResponsePromiseRejectFunction();
42
43      return;
44    }
45
46    setTimeout(this[observeUrlChanges].bind(this), 1000);
47  }
48
49  [getCurrentUrl]() {
50    if (!this.windowHandler || !this.windowHandler.location) {
51      return '';
52    }
53
54    try {
55      return this.windowHandler.location.href || '';
56    } catch (error) {
57      return '';
58    }
59  }
60
61  [isOauthResponseAvailable]() {
62    const currentUrl = this[getCurrentUrl]();
63
64    return currentUrl.indexOf('oauth_verifier') !== -1;
65  }
66
67  [getOauthResponse]() {
68    const currentUrl = this[getCurrentUrl]();
69
70    return {
71      token: getUrlParameter(currentUrl, 'oauth_token'),
72      verifier: getUrlParameter(currentUrl, 'oauth_verifier'),
73    };
74  }
75}
76
77module.exports = TwitterAuthorization;