whitef0x0/tellform

'use strict';

//Menu service used for managing  menus
angular.module('core').service('Menus', [

    function() {
        // Define a set of default roles
        this.defaultRoles = ['*'];

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

        // A private function for rendering decision
        var shouldRender = function(user) {
            if (user) {
                if (~this.roles.indexOf('*')) {
                    return true;
                } 
                for (var userRoleIndex in user.roles) {
                    for (var roleIndex in this.roles) {
                        if (this.roles[roleIndex] === user.roles[userRoleIndex]) {
                            return true;
                        }
                    }
                }
                return false;

            } 
            return this.isPublic;
        };

        // 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');
            }
        };

        // 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, menuItemType, menuItemUIRoute, isPublic, roles, position) {
            // Validate that the menu exists
            this.validateMenuExistance(menuId);

            // Push new menu item
            this.menus[menuId].items.push({
                title: menuItemTitle,
                link: menuItemURL,
                menuItemType: menuItemType || 'item',
                menuItemClass: menuItemType,
                uiRoute: menuItemUIRoute || ('/' + menuItemURL),
                isPublic: ((isPublic === null || typeof isPublic === 'undefined') ? this.menus[menuId].isPublic : isPublic),
                roles: ((roles === null || typeof roles === 'undefined') ? this.menus[menuId].roles : roles),
                position: position || 0,
                items: [],
                shouldRender: shouldRender
            });

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

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

            // Search for menu item
            for (var itemIndex in this.menus[menuId].items) {
                if (this.menus[menuId].items[itemIndex].link === rootMenuItemURL) {
                    // Push new submenu item
                    this.menus[menuId].items[itemIndex].items.push({
                        title: menuItemTitle,
                        link: menuItemURL,
                        uiRoute: menuItemUIRoute || ('/' + menuItemURL),
                        isPublic: ((isPublic === null || typeof isPublic === 'undefined') ? this.menus[menuId].items[itemIndex].isPublic : isPublic),
                        roles: ((roles === null || typeof roles === 'undefined') ? this.menus[menuId].items[itemIndex].roles : roles),
                        position: position || 0,
                        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];
        };

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

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

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

        //Adding the topbar menu
        this.addMenu('topbar', false, ['*']);

        //Adding the bottombar menu for the Form-Footer view
        this.addMenu('bottombar', false, ['*']);
    }
]);