Update to use the new graph API

lib/strategy.js

@@ -45,11 +45,12 @@ function Strategy(options, verify) {
   options = options || {};
   options.authorizationURL = options.authorizationURL || 'https://api.instagram.com/oauth/authorize/';
   options.tokenURL = options.tokenURL || 'https://api.instagram.com/oauth/access_token';
-  
+
   OAuth2Strategy.call(this, options, verify);
   this.name = 'instagram';
   this._clientSecret = options.clientSecret;
   this._signRequests = options.signRequests;
+  this._profileURL = options.profileURL || 'https://graph.instagram.com/me?fields=id,username';
 }
 
 /**
@@ -73,39 +74,19 @@ util.inherits(Strategy, OAuth2Strategy);
  * @api protected
  */
 Strategy.prototype.userProfile = function(accessToken, done) {
-  // TODO: Instagram provides user profile information in the access token
-  //       response.  As an optimization, that information should be used, which
-  //       would avoid the need for an extra request during this step.  However,
-  //       the internal node-oauth module will have to be modified to support
-  //       exposing this information.
-
-  var baseInstagramAPI = 'https://api.instagram.com/v1'
-    , userInfoEndpoint = '/users/self';
-
-  if (this._signRequests) {
-    // Sign user profile info request according to Instagram API
-    // This is required if "Force Signed Requests" is enabled in Instaram client's settongs (Under Security)
-    // https://www.instagram.com/developer/secure-api-requests/
-    userInfoEndpoint += '?sig=' + crypto.createHmac('sha256', this._clientSecret).update(userInfoEndpoint + '|access_token=' + accessToken).digest('hex');
-  }
-
-  this._oauth2.get(baseInstagramAPI + userInfoEndpoint, accessToken, function (err, body, res) {
+  this._oauth2.get(this._profileURL, accessToken, function (err, body, res) {
     if (err) { return done(new InternalOAuthError('failed to fetch user profile', err)); }
-    
+
     try {
       var json = JSON.parse(body);
-      
+
       var profile = { provider: 'instagram' };
-      profile.id = json.data.id;
-      profile.displayName = json.data.full_name;
-      profile.name = { familyName: json.data.last_name,
-                       givenName: json.data.first_name };
-      profile.username = json.data.username;
-      profile.photos = [{value: json.data.profile_picture}];
-
+      profile.id = json.id;
+      profile.username = json.username;
+
       profile._raw = body;
       profile._json = json;
-      
+
       done(null, profile);
     } catch(e) {
       done(e);