AADLogin.js

window.accessToken = null;
window.tokenDefer = $.Deferred();
var adLoginService = (function ($) {

    $(document).ready(function () {
        console.log("doc ready from AD Login");
        window.config = {

            clientId: '<clientId of the azure AD app>',
            postLogoutRedirectUri: window.location.origin,
            cacheLocation: 'localStorage' // enable this for IE, as sessionStorage does not work for localhost.
        };
        var authContext = new AuthenticationContext(config);


        var isCallback = authContext.isCallback(window.location.hash);
        authContext.handleWindowCallback();
      //  if (isCallback && !authContext.getLoginError()) {
       //     window.location = authContext._getItem(authContext.CONSTANTS.STORAGE.LOGIN_REQUEST);
        //}
        // If not logged in force login
        var cachedToken = authContext.getCachedToken(window.config.clientId);
        if (cachedToken) {
            console.log("user already logged in");
            // Logged in already
            authContext.acquireToken(authContext.config.loginResource, function (error, token) {
                if (error || !token) {
                    console.log("ADAL error occurred: " + error);
                    window.tokenDefer.reject();
                }
                console.log("got the token.. resolving tokendefer");
                window.accessToken = token;
                window.tokenDefer.resolve(token);
            });
        }
        else {
            // NOTE: you may want to render the page for anonymous users and render
            // a login button which runs the login function upon click.
            console.log("calling login");
            authContext.login();
        }
    });

})(jQuery);