(function () {
  'use strict';

  angular
    .module('portal.client')
    .factory('loginService', ['$http', '$q', 'CONSTANTS', 'authenticationData','$state', function ($http, $q, CONSTANTS, authenticationData,$state) {
      var loginService = this,
        tokenEndPoint = CONSTANTS.BASE + CONSTANTS.TOKEN,
        deferred,
        userInfo;

      loginService.login = function (username, password, rememberMeChecked) {
        deferred = $q.defer();

        var data = "grant_type=password&username=" + username + "&password=" + password;

        $http.post(tokenEndPoint, data, {
          headers: {
            'Content-Type': 'application/x-www-form-urlencoded'
          }
        }).success(function (response) {
            console.log(response);
            userInfo = {
              access_token: response.access_token,
              refresh_token: response.refresh_token,
              username: response.sub,
              expires_in: response.expires_in
            };

            if (rememberMeChecked) {
              authenticationData.setLocalStorage(userInfo);
              authenticationData.userInfo.storageInUse = 'localStorage';
            }
            else {
              authenticationData.setSessionStorage(userInfo);
              authenticationData.userInfo.storageInUse = 'sessionStorage';
            }

            authenticationData.userInfo.clientIsAuthenticated = true;
            authenticationData.userInfo.clientUsername = response.username;

          //send user to default homepage
            $state.go('authClient.dashboard');
            deferred.resolve(null);

          })
          .error(function (err) {
            console.log(err);
            authenticationData.userInfo.clientIsAuthenticated = false;
            authenticationData.userInfo.clientUsername = '';
            deferred.resolve(err);
          });
        return deferred.promise;
      };

      return loginService;

    }]);
}());