lego6.js

//navigation.js - centralized app navigation methods

function isLoggedIn(fn){
  return function() {
    if( /* test if the user is logged in */ ){
      /* redirect to login page */
    } else {
      var args = Array.prototype.slice.call(arguments);
      return fn && fn.apply(this, args);
    }
  };
}

function hasRole(role, fn){
  return function() {
    if( /* test if the user has role */ ){
      /* redirect to 403 page */
    } else {
      var args = Array.prototype.slice.call(arguments);
      return fn && fn.apply(this, args);
    }
  };
}

function hasVerifiedCreditCard(fn){
  return function() {
    if( /* test if the user has a verified credit card */ ){
      /* redirect to the page in which he can verify his credit card */
    } else {
      var args = Array.prototype.slice.call(arguments);
      return fn && fn.apply(this, args);
    }
  };
}

exports.openHomePage = function(){ /* code for opening the Home page */ };

exports.openProfilePage = isLoggedIn(function(){ /* code for opening the Profile page */ });

exports.openDashboardPage = isLoggedIn(function(){ /* code for opening Dashboard page */ });

exports.openInsightsPage = isLoggedIn(hasRole('admin', function(){ /* code for opening Insights page */ }));

exports.openBillingPage = isLoggedIn(hasVerifiedCreditCard(function(){ /* code for opening the Billing page */ }));