Merge pull request #200 from prometheansacrifice/master

Example code for github

examples/github-example.js

@@ -0,0 +1,73 @@
+var http = require('http');
+var qs = require('querystring');
+// var OAuth = require('oauth'), OAuth2 = OAuth.OAuth2;
+var OAuth2 = require('../lib/oauth2.js').OAuth2;
+
+var clientID = '';
+var clientSecret = '';
+var oauth2 = new OAuth2(clientID,
+                        clientSecret,
+                        'https://github.com/', 
+                        'login/oauth/authorize',
+                        'login/oauth/access_token',
+                        null); /** Custom headers */
+
+http.createServer(function (req, res) {
+    var p = req.url.split('/');
+    pLen = p.length;
+
+    /**
+     * Authorised url as per github docs:
+     * https://developer.github.com/v3/oauth/#redirect-users-to-request-github-access
+     * 
+     * getAuthorizedUrl: https://github.com/ciaranj/node-oauth/blob/master/lib/oauth2.js#L148
+     * Adding params to authorize url with fields as mentioned in github docs
+     *
+     */
+    var authURL = oauth2.getAuthorizeUrl({
+        redirect_uri: 'http://localhost:8080/code',
+        scope: ['repo', 'user'],
+        state: 'some random string to protect against cross-site request forgery attacks'
+    });
+
+
+    /**
+     * Creating an anchor with authURL as href and sending as response
+     */
+    var body = '<a href="' + authURL + '"> Get Code </a>';
+    if (pLen === 2 && p[1] === '') {
+        res.writeHead(200, {
+            'Content-Length': body.length,
+            'Content-Type': 'text/html' });
+        res.end(body);
+    } else if (pLen === 2 && p[1].indexOf('code') === 0) {
+
+        /** Github sends auth code so that access_token can be obtained */
+        var qsObj = {};
+
+        /** To obtain and parse code='...' from code?code='...' */
+        qsObj = qs.parse(p[1].split('?')[1]); 
+
+        /** Obtaining access_token */
+        oauth2.getOAuthAccessToken(
+            qsObj.code,
+            {'redirect_uri': 'http://localhost:8080/code/'},
+            function (e, access_token, refresh_token, results){
+                if (e) {
+                    console.log(e);
+                    res.end(e);
+                } else if (results.error) {
+                    console.log(results);
+                    res.end(JSON.stringify(results));
+                }
+                else {
+                    console.log('Obtained access_token: ', access_token);
+                    res.end( access_token);
+                }
+        });
+
+    } else {
+        // Unhandled url
+    }
+
+}).listen(8080);