5VHStU8k

1var express = require('express');
2var app = express();
3var axios = require('axios');
4var bodyParser = require('body-parser');
5 
6app.use(bodyParser.json()); // for parsing application/json
7app.use(bodyParser.urlencoded({ extended: true })); // for parsing application/x-www-form-urlencoded
8 
9var oauth_token_secret = '';
10 
11const consumer_key = 'xxx';
12const consumer_secret = 'xxx';
13 
14const oauth_callback = 'http://localhost:3000/callback';
15 
16const api_request_url = 'https://apifeed.sellsy.com/0/request_token';
17const api_authorize_url = 'https://apifeed.sellsy.com/0/login.php';
18const api_access_url = 'https://apifeed.sellsy.com/0/access_token';
19 
20 
21app.get('/', function (req, res) {
22 
23   // 1st step - request token
24   axios.get(api_request_url, {
25       params: {
26           oauth_callback: oauth_callback,
27           oauth_consumer_key: consumer_key,
28           oauth_nonce: getNonce(),
29           oauth_timestamp: getTimestamp(),
30           oauth_signature: consumer_secret + '&',
31           oauth_signature_method: 'PLAINTEXT'
32       }
33   })
34   .then(function (response) {
35       var url = response.data.slice(21);
36       var oauth_token = gup('oauth_token', url);
37       oauth_token_secret = gup('oauth_token_secret', url);
38 
39       // 2nd step - authorize token (display login webview)
40       res.redirect(api_authorize_url + '?oauth_token=' + oauth_token);
41   })
42   .catch(function (error) {
43       console.log(error);
44   });
45 
46});
47 
48app.listen(3000, function () {
49   console.log('Example app listening on port 3000!')
50});
51 
52app.get('/callback', (req, res) => {
53   var oauth_token = req.query.oauth_token;
54   var oauth_verifier = req.query.oauth_verifier;
55 
56   console.log('callback')
57   console.log(oauth_token)
58   console.log(oauth_verifier)
59 
60   // 3rd step - access token - Result of this last request will give tokens that will be used to perform API calls
61   axios.get(api_access_url, {
62       params: {
63           oauth_consumer_key: consumer_key,
64           oauth_token: oauth_token,
65           oauth_verifier: oauth_verifier,
66           oauth_signature: consumer_secret + '&' + oauth_token_secret,
67           oauth_signature_method: 'PLAINTEXT',
68           oauth_nonce: getNonce(),
69           oauth_timestamp: getTimestamp()
70       }
71   })
72   .then(result => {
73       console.log(result.data);
74       res.send(result.data)
75   })
76   .catch(error => {
77       console.log(error.data);
78   });
79 
80  
81});
82 
83function getTimestamp() {
84   var d = new Date();
85   var ts = Math.floor(d.getTime() / 1000);
86   return ts;
87}
88 
89function gup(name, url) {
90   if (!url) url = location.href;
91   name = name.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
92   var regexS = "[\\?&]" + name + "=([^&#]*)";
93   var regex = new RegExp(regexS);
94   var results = regex.exec(url);
95   return results == null ? null : results[1];
96}
97 
98function getNonce(length) {
99   if (length === undefined) {
100       length = 5;
101   }
102   var nonce_chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
103   var result = "";
104   var cLength = nonce_chars.length;
105   for (var i = 0; i < length; i++) {
106       var rnum = Math.floor(Math.random() * cLength);
107       result += nonce_chars.substring(rnum, rnum + 1);
108   }
109   return result;
110}
111