// Get Programming with JavaScript

// Listing 20.04

// The fitness app controller

​

(function () {

  var user = null;

  function buildUser (userData) {

    var user = new fitnessApp.User(userData.name);

    userData.sessions.forEach(function (session) {

      user.addSession(session.sessionDate, session.duration);

    });

    return user;

  }

  function updateUserFromData (userData) {

      user = buildUser(userData);

      fitnessApp.userView.render(user);     

  }

  function loadUser (id) {

    gpwj.data.load(id, updateUserFromData);

    return "Loading user details...";

  }

  function log (sessionDate, duration) {

    if (user !== null) {

        user.addSession(sessionDate, duration);

        fitnessApp.userView.render(user);

        return "Thanks for logging your session.";

    } else {

        return "Please wait for user details to load.";

    }

  }

  function init (id) {

    loadUser(id);

    return {

      log: log,

      loadUser: loadUser

    };

  }

  if (window.fitnessApp === undefined) {

    window.fitnessApp = {};

  }

  fitnessApp.init = init;

})();