allowing session, cache and approval params to be configured

nraboy#128

Author: ffabreti

dist/ng-cordova-oauth.js

@@ -680,16 +680,44 @@ function google($q, $http, $cordovaOauthUtility) {
    * @return   promise
    */
   function oauthGoogle(clientId, appScope, options) {
+
     var deferred = $q.defer();
+
     if(window.cordova) {
+
       if($cordovaOauthUtility.isInAppBrowserInstalled()) {
-        var redirect_uri = "http://localhost/callback";
+
+        var redirect_uri = "http://localhost/callback",
+            clear_cache = 'no',
+            clear_session = 'no',
+            approval_prompt = 'auto';
+
         if(options !== undefined) {
           if(options.hasOwnProperty("redirect_uri")) {
             redirect_uri = options.redirect_uri;
           }
+          if(options.hasOwnProperty("clear_cache")) {
+              clear_cache = options.clear_cache === true ? 'yes' : 'no';
+          }
+          if(options.hasOwnProperty("clear_session")) {
+              clear_session = options.clear_session === true ? 'yes' : 'no';
+          }
+          if(options.hasOwnProperty("approval_prompt")) {
+              approval_prompt = options.approval_prompt === true ? 'force' : 'auto';
+          }
         }
-        var browserRef = window.cordova.InAppBrowser.open('https://accounts.google.com/o/oauth2/auth?client_id=' + clientId + '&redirect_uri=' + redirect_uri + '&scope=' + appScope.join(" ") + '&approval_prompt=force&response_type=token', '_blank', 'location=no,clearsessioncache=yes,clearcache=yes');
+
+        var browserRef = window.cordova.InAppBrowser.open(
+                'https://accounts.google.com/o/oauth2/auth?client_id=' + clientId
+                + '&redirect_uri=' + redirect_uri
+                + '&scope=' + appScope.join(" ")
+                + '&approval_prompt=' + approval_prompt
+                + '&response_type=token'
+                , '_blank'
+                , 'location=no,clearsessioncache=' + clear_session
+                + ',clearcache=' + clear_cache
+        );
+
         browserRef.addEventListener("loadstart", function(event) {
           if((event.url).indexOf(redirect_uri) === 0) {
             browserRef.removeEventListener("exit",function(event){});
@@ -707,15 +735,19 @@ function google($q, $http, $cordovaOauthUtility) {
             }
           }
         });
+
         browserRef.addEventListener('exit', function(event) {
           deferred.reject("The sign in flow was canceled");
         });
+
       } else {
         deferred.reject("Could not find InAppBrowser plugin");
       }
+
     } else {
       deferred.reject("Cannot authenticate via a web browser");
     }
+
     return deferred.promise;
   }
 }