Added a way to add more userProfile parser to use other google API

.gitignore

@@ -7,3 +7,5 @@ reports/
 # Node.js
 node_modules
 npm-debug.log
+
+package-lock.json

.npmignore

@@ -6,3 +6,4 @@ test/
 
 .jshintrc
 .travis.yml
+package-lock.json

lib/errors/parsererror.js

@@ -0,0 +1,23 @@
+/**
+ * `ParserError` error.
+ *
+ * @constructor
+ * @param {string} [message]
+ * @param {string} [code]
+ * @access public
+ */
+function ParserError(message, code) {
+    Error.call(this);
+    Error.captureStackTrace(this, arguments.callee);
+    this.name = 'ParserError';
+    this.message = message;
+    this.code = code;
+  }
+
+  // Inherit from `Error`.
+  ParserError.prototype.__proto__ = Error.prototype;
+
+
+  // Expose constructor.
+  module.exports = ParserError;
+

lib/strategy.js

@@ -6,6 +6,7 @@ var OAuth2Strategy = require('passport-oauth2')
   , OpenIDProfile = require('./profile/openid')
   , InternalOAuthError = require('passport-oauth2').InternalOAuthError
   , GooglePlusAPIError = require('./errors/googleplusapierror')
+  , ParserError = require('./errors/parsererror')
   , UserInfoError = require('./errors/userinfoerror');
 
 
@@ -24,6 +25,7 @@ var OAuth2Strategy = require('passport-oauth2')
  *   - `clientID`      your Google application's client id
  *   - `clientSecret`  your Google application's client secret
  *   - `callbackURL`   URL to which Google will redirect the user after granting authorization
+ *   - `profileParser`        an object containing a name and a parse(json) function if you want to consume another google API (ie. People API)
  *
  * Examples:
  *
@@ -52,12 +54,22 @@ function Strategy(options, verify) {
   OAuth2Strategy.call(this, options, verify);
   this.name = 'google';
   this._userProfileURL = options.userProfileURL || 'https://www.googleapis.com/plus/v1/people/me';
-
-  var url = uri.parse(this._userProfileURL);
-  if (url.pathname.indexOf('/userinfo') == (url.pathname.length - '/userinfo'.length)) {
-    this._userProfileFormat = 'openid';
+
+  this.profileParsers = {
+    'openid': OpenIDProfile,
+    'google+': GooglePlusProfile
+  };
+
+  if (options.profileParser) {
+    this._userProfileFormat = options.profileParser.name || 'custom';
+    this.profileParsers[this._userProfileFormat] = options.profileParser;
   } else {
-    this._userProfileFormat = 'google+'; // Google Sign-In
+    var url = uri.parse(this._userProfileURL);
+    if (url.pathname.indexOf('/userinfo') == (url.pathname.length - '/userinfo'.length)) {
+      this._userProfileFormat = 'openid';
+    } else {
+      this._userProfileFormat = 'google+'; // Google Sign-In
+    }
   }
 }
 
@@ -105,16 +117,11 @@ Strategy.prototype.userProfile = function(accessToken, done) {
       return done(new Error('Failed to parse user profile'));
     }
 
-    var profile;
-    switch (self._userProfileFormat) {
-    case 'openid':
-      profile = OpenIDProfile.parse(json);
-      break;
-    default: // Google Sign-In
-      profile = GooglePlusProfile.parse(json);
-      break;
+    var parser = self.profileParsers[self._userProfileFormat];
+    if (!parser) {
+      return done(new ParserError('Parser not found for profile format '+ self._userProfileFormat));
     }
-
+    var profile = parser.parse(json);
     profile.provider  = 'google';
     profile._raw = body;
     profile._json = json;