angular.module('agileApp').service('UserAuthService',
 ['$rootScope', '$location', '$http', '$window', 'BackendService', '$interval',
 function($rootScope, $location, $http, $window, backendService, $interval) {
  var service = this;
  var isLoggedInState = false;
  var profile;
  var oauthtoken;

    //refresh every 45 minutes

    var refreshPromise = $interval(function() {
      if(isLoggedInState){
        console.log("automatically refreshing");
        gapi.auth.authorize({client_id: service.client_id,
            scope: service.scope,
            immediate: true
        }, function(oauth2) {
            $rootScope.$apply(function() {
                console.log("refreshed oauth2 per 45 minutes", oauth2);
                oauthtoken = oauth2;
            });
        });
       }
    }, 60*45*1000);


  this.client_id = '677067502417-4473u2kdf1vn6oknlq4u8denhsd54u0o.apps.googleusercontent.com';
  this.scope = 'profile email';
                          this.isLoggedIn = function() { return isLoggedInState;}
  this.getProfile = function() { return profile;}
  this.getOauthToken = function() { return oauthtoken;}
  this.getProfileImage = function() { return profile.picture; }
  this.logout = function() {
    if(gapi.auth) {
      gapi.auth.signOut();
    }
    if(oauthtoken) {
      $http.jsonp("https://accounts.google.com/o/oauth2/revoke?token=" + oauthtoken.access_token).then(function(response) {
        
      }, function(errorResponse) {
        //its always going to fail, no jsonp or cross origin calls for that endpoint
      });
      isLoggedInState = false;
      $location.path('/');
      $window.location.reload();
    }
    $window.localStorage.clear();
    isLoggedInState = false;
    $location.path('/');
  }


  this.refreshToken = function(callback) {
    console.log(oauthtoken.expires_at);
    if(oauthtoken.expires_at * 1000 > new Date().getTime()) {
        console.log("token still good, not refreshing");
        if(callback) {
            callback();
        }
        return;
    }

    gapi.auth.authorize({client_id: service.client_id,
        scope: service.scope,
        immediate: true
    }, function(oauth2){
       $rootScope.$apply(function() {
         console.log("refreshed oauth2", oauth2);
         oauthtoken = oauth2;
         if(callback) {
         callback();
         }
       });
    });
  }

  this.startoauthSignin = function() {
    console.log(service.client_id);
    gapi.auth.authorize({
    client_id: service.client_id,
    scope: service.scope,
    immediate: false
  },
  function(oauth2){
    $rootScope.$apply(function() {
      oauthtoken = oauth2;
    });
    gapi.client.oauth2.userinfo.get().execute(function(resp) {
      if(resp){
        console.log("profile:",resp);
        $rootScope.$apply(function() {
          profile = resp; 
          if(profile && !profile.code && oauthtoken) {
            isLoggedInState = true;
            $location.path('/tasks')
          } else {
            service.logout();
          }});
      }
    });
  });

 }
}])