Merge pull request #1 from rafaelharus/master

 Adding locale in options constructor Strategy

lib/strategy.js

@@ -48,7 +48,7 @@ var OAuth2Strategy = require('passport-oauth2')
 function Strategy(options, verify) {
   options = options || {};
   var version = options.graphAPIVersion || 'v3.2';
-  
+
   options.authorizationURL = options.authorizationURL || 'https://www.facebook.com/' + version + '/dialog/oauth';
   options.tokenURL = options.tokenURL || 'https://graph.facebook.com/' + version + '/oauth/access_token';
   options.scopeSeparator = options.scopeSeparator || ',';
@@ -59,6 +59,7 @@ function Strategy(options, verify) {
   this._profileFields = options.profileFields || null;
   this._enableProof = options.enableProof;
   this._clientSecret = options.clientSecret;
+  this._locale = options.locale || null;
 }
 
 // Inherit from `OAuth2Strategy`.
@@ -102,7 +103,7 @@ Strategy.prototype.authorizationParams = function (options) {
   if (options.display) {
     params.display = options.display;
   }
-  
+
   // https://developers.facebook.com/docs/facebook-login/reauthentication/
   if (options.authType) {
     params.auth_type = options.authType;
@@ -143,32 +144,35 @@ Strategy.prototype.userProfile = function(accessToken, done) {
     // secret as the key.
     //
     // For further details, refer to:
-    // https://developers.facebook.com/docs/reference/api/securing-graph-api/    
+    // https://developers.facebook.com/docs/reference/api/securing-graph-api/
     var proof = crypto.createHmac('sha256', this._clientSecret).update(accessToken).digest('hex');
     url.search = (url.search ? url.search + '&' : '') + 'appsecret_proof=' + proof;
   }
   if (this._profileFields) {
     var fields = this._convertProfileFields(this._profileFields);
     if (fields !== '') { url.search = (url.search ? url.search + '&' : '') + 'fields=' + fields; }
   }
+  if (this._locale) {
+    url.search = (url.search ? url.search + '&' : '') + 'locale=' + this._locale;
+  }
   url = uri.format(url);
 
   this._oauth2.get(url, accessToken, function (err, body, res) {
     var json;
-    
+
     if (err) {
       if (err.data) {
         try {
           json = JSON.parse(err.data);
         } catch (_) {}
       }
-      
+
       if (json && json.error && typeof json.error == 'object') {
         return done(new FacebookGraphAPIError(json.error.message, json.error.type, json.error.code, json.error.error_subcode, json.error.fbtrace_id));
       }
       return done(new InternalOAuthError('Failed to fetch user profile', err));
     }
-    
+
     try {
       json = JSON.parse(body);
     } catch (ex) {
@@ -219,9 +223,9 @@ Strategy.prototype._convertProfileFields = function(profileFields) {
     'emails':      'email',
     'photos':      'picture'
   };
-  
+
   var fields = [];
-  
+
   profileFields.forEach(function(f) {
     // return raw Facebook profile field to support the many fields that don't
     // map cleanly to Portable Contacts