slush-meanjs/templates/app/static/public/modules/core/services/menus.client.service.js

A slush generator to scaffold MEAN Apps. Inspired by http://meanjs.org

'use strict';

//Menu service used for managing  menus
angular.module('core').service('Menus', [
	function() {
		// Define a set of default roles
		this.defaultRoles = ['user'];

		// Define the menus object
		this.menus = {};

		// A private function for rendering decision 
		var shouldRender = function(user) {
			if(user) {
				for (var userRoleIndex in user.roles) {
					for (var roleIndex in this.roles) {
						if(this.roles[roleIndex] === user.roles[userRoleIndex]) {
							return true;
						}
					}
				} 
			} else {
				return this.isPublic;
			}

			return false;
		};

		// Validate menu existance
		this.validateMenuExistance = function(menuId) {
			if (menuId && menuId.length) {
				if (this.menus[menuId]) {
					return true;
				} else {
					throw new Error('Menu does not exists');
				}
			} else {
				throw new Error('MenuId was not provided');
			}

			return false;
		};

		// Get the menu object by menu id
		this.getMenu = function(menuId) {
			// Validate that the menu exists
			this.validateMenuExistance(menuId);

			// Return the menu object
			return this.menus[menuId];
		};

		// Add new menu object by menu id
		this.addMenu = function(menuId, isPublic, roles) {
			// Create the new menu
			this.menus[menuId] = {
				isPublic: isPublic || false,
				roles: roles || this.defaultRoles,
				items: [],
				shouldRender: shouldRender
			};

			// Return the menu object
			return this.menus[menuId];
		};

		// Remove existing menu object by menu id
		this.removeMenu = function(menuId) {
			// Validate that the menu exists
			this.validateMenuExistance(menuId);

			// Return the menu object
			delete this.menus[menuId];
		};

		// Add menu item object
		this.addMenuItem = function(menuId, menuItemTitle, menuItemURL, menuItemUIRoute, isPublic, roles) {
			// Validate that the menu exists
			this.validateMenuExistance(menuId);

			// Push new menu item
			this.menus[menuId].items.push({
				title: menuItemTitle,
				link: menuItemURL,
				uiRoute: menuItemUIRoute || ('/' + menuItemURL),
				isPublic: isPublic || this.menus[menuId].isPublic,
				roles: roles || this.defaultRoles,
				shouldRender: shouldRender
			});

			// Return the menu object
			return this.menus[menuId];
		};

		// Remove existing menu object by menu id
		this.removeMenuItem = function(menuId, menuItemURL) {
			// Validate that the menu exists
			this.validateMenuExistance(menuId);

			// Search for menu item to remove
			for (var itemIndex in this.menus[menuId].items) {
				if (this.menus[menuId].items[itemIndex].link === menuItemURL) {
					this.menus[menuId].items.splice(itemIndex, 1);
				}
			}

			// Return the menu object
			return this.menus[menuId];
		};

		//Adding the topbar menu
		this.addMenu('topbar');
	}
]);