app_vue2/use/layout/Menus/agendaMenu.ts

import {ItemMenu, ItemsMenu, Menu} from "~/types/interfaces";
import BaseMenu from "~/use/layout/Menus/baseMenu";
import {NuxtConfig} from "@nuxt/types/config";
import {Ability} from "@casl/ability";

/**
 * @category Use/layout/Menus
 * @class AgendaMenu
 * Classe pour la construction du Menu agenda
 */
class AgendaMenu extends BaseMenu implements Menu{
  private $ability:Ability;

  /**
   * @constructor
   * Initialisation des services issues du context
   */
  constructor($config:NuxtConfig, $ability:Ability) {
    super($config)
    this.$ability = $ability
  }

  /**
   * Construit le menu Agenda ou null si aucune page accessible
   * @return {ItemMenu | null}
   */
  getMenu():ItemMenu | null {
    const children:ItemsMenu = [];

    if (this.$ability.can('display', 'agenda_page')) {
      children.push(this.constructMenu('schedule', 'fa-calendar-alt',  '/calendar', true))
    }

    if (this.$ability.can('display', 'attendance_page')) {
      children.push(this.constructMenu('attendances', 'fa-calendar-check',  '/attendances/list/', true))
    }

    if(children.length === 1){
      return children[0];
    }
    return children.length > 0 ? this.constructMenu('schedule', 'fa-calendar-alt',  undefined, undefined, children) : null;
  }
}

export const getAgendaMenu = ($config:NuxtConfig, $ability:Ability) => new AgendaMenu($config, $ability).getMenu()