i399exng1comp/app/board.srv.js

(function () {
    'use strict';

    angular.module('app').service('board', Srv);

    Srv.$inject = ['$q', '$window'];

    function Srv($q, $window) {

        this.getBoardState = getBoardState;
        this.setLight = setLight;
        this.setAlarm = setAlarm;

        function getBoardState() {
            return $q.when(getState())
        }

        function getState() {
            var string = $window.sessionStorage.getItem('BOARD-STATE');
            return string ? JSON.parse(string) : {};
        }

        function saveState(state) {
            var string = JSON.stringify(state);
            $window.sessionStorage.setItem('BOARD-STATE', string);
        }


        function setLight(isOn) {
            var state = getState();
            state.light = isOn;
            saveState(state);
            return $q.when();
        }

        function setAlarm(isOn) {
            var state = getState();
            state.alarm = isOn;
            saveState(state);
            return $q.when();
        }
    }


})();