import {Collapse, Dropdown} from "flowbite";
import {useEffect} from "react";
import delve from "dlv";
import {signOut, useSession} from "next-auth/react";
import {FontAwesomeIcon} from '@fortawesome/react-fontawesome'
import {useRouter} from "next/router";
import {faBagShopping, faRightToBracket, faUserPlus} from "@fortawesome/free-solid-svg-icons";

import {getBackendImg, hasAvatar} from "../../libs/api";
import {siteConfig} from "../../config";
import {buildShopParamsGET} from "../../libs/utils";

export function Header({items = []}) {
  const {data: session} = useSession();
  const router = useRouter();

  useEffect(() => {
    if (session == null) {
      return;
    }
  }, [session]);

  useEffect(function mount() {
    const menuButton = document.getElementById('menu-dropdown-button');
    const menuZone = document.getElementById('menu-dropdown');
    if (menuButton && menuZone) {
      new Dropdown(menuZone, menuButton);
    }

    const userButton = document.getElementById('user-menu-button');
    const userZone = document.getElementById('user-dropdown');
    if (userButton && userZone) {
      new Dropdown(userZone, userButton);
    }

    const burgerButton = document.getElementById('menu-button');
    const megaZone = document.getElementById('navbar-dropdown');
    if (burgerButton && megaZone) {
      new Collapse(megaZone, burgerButton);
    }
  });

  const isActive = (item) => router.route.includes(item.attributes.url);

  const renderGenerateItem = (item, index, isActive = false) => {
    const value = delve(item, 'attributes', {});
    return (
      <li key={value.title + index}>
        {value.children.data.length > 0 ? renderDropdownItem(value, isActive) : renderRegularItem(value, isActive)}
      </li>
    );
  }

  const renderRegularItem = (item, isActive = false) => {
    const url = item.url.includes('/shop') ? `${item.url}${buildShopParamsGET()}` : item.url;

    return (
      <a href={url}
         target={item.target}
         title={"Accédez à la page " + item.title}
         aria-label={"Accédez à la page " + item.title}
         className={"text-gray-900 hover:text-blue-600 dark:text-gray-400 dark:hover:bg-transparent dark:hover:text-gray-500 " + (isActive ? 'text-blue-600 dark:text-gray-500' : '') + " block py-2 pl-3 pr-4 border-b border-gray-100 hover:bg-gray-50 md:hover:bg-transparent md:border-0 md:p-0"}
         aria-current="page">{item.title}</a>
    )
  }

  const renderRegularDropdownItem = (item, index) => {
    const value = delve(item, 'attributes', {});
    return (
      <li key={value.title + index}>
        <a href={value.url}
           title={"Accédez à la page " + value.title}
           aria-label={"Accédez à la page " + value.title}
           className="text-gray-900 dark:text-gray-400 hover:text-blue-600 dark:hover:text-gray-500">
          {value.title}
        </a>
      </li>
    );
  }

  const renderDropdownItem = (item, isActive = false) => {
    return (
      <>
        <button id="menu-dropdown-button"
                className={"flex items-center justify-between w-full py-2 pl-3 pr-4 text-gray-900 dark:text-gray-400 " + (isActive ? 'text-blue-600 dark:text-gray-500' : '') + "  font-medium border-b border-gray-100 md:w-auto hover:bg-gray-50 md:p-0 dark:border-transparent dark:hover:bg-transparent dark:hover:text-gray-500"}>
          {item.title}
          <svg aria-hidden="true"
               className="w-5 h-5 ml-1 md:w-4 md:h-4"
               fill="currentColor"
               viewBox="0 0 20 20"
               xmlns="http://www.w3.org/2000/svg">
            <path fillRule="evenodd"
                  d="M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z"
                  clipRule="evenodd"></path>
          </svg>
        </button>
        <div id="menu-dropdown"
             className="absolute z-10 grid hidden w-auto text-sm bg-white border border-gray-100 rounded-lg shadow-md dark:border-gray-700 dark:bg-gray-700">
          <div className="p-4 pb-0 text-gray-900 md:pb-4 dark:text-white">
            <ul className="space-y-4"
                aria-labelledby="mega-menu-dropdown-button">
              {item.children.data.map((children, index) => renderRegularDropdownItem(children, index))}
            </ul>
          </div>
        </div>
      </>
    )
  }

  const renderAnonymousUser = () => {
    return (
      <>
        <a href="/sign-in"
           title="Page de connexion"
           aria-label="Page de connexion"
           className="text-gray-800 dark:text-white hover:bg-gray-50 focus:ring-4 focus:ring-gray-300 font-medium rounded-lg text-sm px-4 py-2 md:px-5 md:py-2.5 mr-1 md:mr-2 dark:hover:bg-gray-700 focus:outline-none dark:focus:ring-gray-800">
          <span className="hidden lg:block">Connexion</span>
          <span className="block lg:hidden">
            <FontAwesomeIcon icon={faRightToBracket} />
          </span>
        </a>
        <a href="/sign-up"
           title="Page d'inscription"
           aria-label="Page d'inscription"
           className="text-white bg-blue-700 hover:bg-blue-800 focus:ring-4 focus:ring-blue-300 font-medium rounded-lg text-sm px-4 py-2 md:px-5 md:py-2.5 mr-1 md:mr-2 dark:bg-dark-600 dark:hover:bg-dark-500 focus:outline-none dark:focus:ring-blue-800">
          <span className="hidden lg:block">Inscription</span>
          <span className="block lg:hidden">
            <FontAwesomeIcon icon={faUserPlus} />
          </span>
        </a>
      </>
    );
  }

  const renderConnectedUser = () => {
    return (
      <>
        <button type="button"
                role="button"
                className="flex mr-3 text-sm bg-gray-800 rounded-full md:mr-0 focus:ring-4 focus:ring-gray-300 dark:focus:ring-gray-600"
                id="user-menu-button"
                aria-label="Options de l'utilisateur"
                aria-expanded="false"
                data-dropdown-placement="bottom">
          <span className="sr-only">Options de l'utilisateur</span>
          <img className="w-8 h-8 rounded-full"
               src={hasAvatar((session.user as any)) ? getBackendImg((session.user as any).avatar.formats.thumbnail.url) : siteConfig.defaultUserAvatar}
               alt="user photo" />
        </button>
        <div
          className="z-50 hidden my-4 text-base list-none bg-white divide-y divide-gray-100 rounded shadow dark:bg-gray-700 dark:divide-gray-600"
          id="user-dropdown">
          <div className="px-4 py-3">
            <span className="block text-sm text-gray-900 dark:text-white">{(session.user as any).username}</span>
            <span
              className="block text-sm font-medium text-gray-500 truncate dark:text-gray-400">{session.user.email}</span>
          </div>
          <ul className="py-1"
              aria-labelledby="user-menu-button">
            <li>
              <a href="#"
                 aria-label="Profile"
                 title="Profile"
                 className="block px-4 py-2 text-sm text-gray-700 hover:bg-gray-100 dark:hover:bg-gray-600 dark:text-gray-200 dark:hover:text-white">
                Profile
              </a>
            </li>
            <li>
              <a href="#"
                 aria-label="Paramètres"
                 title="Paramètres"
                 className="block px-4 py-2 text-sm text-gray-700 hover:bg-gray-100 dark:hover:bg-gray-600 dark:text-gray-200 dark:hover:text-white">
                Paramètres
              </a>
            </li>
            <li>
              <a href="#"
                 aria-label="Mes cours"
                 title="Mes cours"
                 className="block px-4 py-2 text-sm text-gray-700 hover:bg-gray-100 dark:hover:bg-gray-600 dark:text-gray-200 dark:hover:text-white">
                Mes cours
              </a>
            </li>
            <li>
              <a href="#"
                 title="Dconnexion"
                 aria-label="Dconnexion"
                // @ts-ignore
                 onClick={signOut}
                 className="block px-4 py-2 text-sm text-gray-700 hover:bg-gray-100 dark:hover:bg-gray-600 dark:text-gray-200 dark:hover:text-white">
                Déconnexion
              </a>
            </li>
          </ul>
        </div>
      </>
    );
  }

  return (
    <nav
      className="bg-white fixed border-gray-200 dark:bg-gray-800 w-full z-10 border-b-gray-50 dark:border-b-gray-700">
      <div className="flex mx-auto">
        <main className="w-full">
          <section
            className="bg-white dark:bg-gray-800 w-full md:w-auto p-2 md:p-4"
            id="navbar-default">
            <div className="container max-w-screen-xl flex flex-wrap items-center justify-between mx-auto">
              <a href="/"
                 aria-label="Page d'accueil MeCP"
                 title="Page d'accueil MeCP"
                 className="flex items-center">
                <img src="https://flowbite.com/docs/images/logo.svg"
                     className="h-6 mr-3 sm:h-9"
                     height="auto"
                     width="auto"
                     alt="Flowbite Logo" />
                <span className="self-center text-xl font-semibold whitespace-nowrap dark:text-white">MeCP</span>
              </a>
              <div className="flex items-center">
                <button
                  id="shop-panel-button"
                  name="shop-panel-button"
                  aria-label="Accéder au panier d'achat"
                  role="button"
                  type="button"
                  className="text-gray-700 border border-transparent hover:bg-gray-200 hover:text-white focus:ring-4 focus:outline-none focus:ring-blue-300 font-medium rounded-lg text-sm p-2.5 text-center inline-flex items-center mr-2 dark:text-blue-500 dark:hover:text-white dark:focus:ring-blue-800">
                  <FontAwesomeIcon icon={faBagShopping} />
                </button>

                {session ? renderConnectedUser() : renderAnonymousUser()}

                <button id="menu-button"
                        type="button"
                        role="navigation"
                        className="inline-flex items-center p-2 text-sm text-gray-500 rounded-lg md:hidden hover:bg-gray-100 focus:outline-none focus:ring-2 focus:ring-gray-200 dark:text-gray-400 dark:hover:bg-gray-700 dark:focus:ring-gray-600"
                        aria-label="Déplier le menu"
                        aria-controls="navbar-dropdown"
                        aria-expanded="false">
                  <span className="sr-only">Open main menu</span>
                  <svg className="w-6 h-6"
                       aria-hidden="true"
                       fill="currentColor"
                       viewBox="0 0 20 20"
                       xmlns="http://www.w3.org/2000/svg">
                    <path fillRule="evenodd"
                          d="M3 5a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zM3 10a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zM3 15a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1z"
                          clipRule="evenodd"></path>
                  </svg>
                </button>
              </div>
            </div>
          </section>
          <hr className="border-gray-100 dark:border-gray-700 container max-w-screen-xl mx-auto" />
          <section className="hidden w-full md:block md:w-auto"
                   id="navbar-dropdown">
            <div className="container max-w-screen-xl mx-auto">
              <ul className="flex flex-col md:p-4 font-medium md:flex-row md:space-x-8 md:mt-0">
                {items.map((item, index: number) => renderGenerateItem(item, index, isActive(item)))}
              </ul>
            </div>
          </section>
          <hr className="border-gray-100 sm:mx-auto dark:border-gray-700" />
        </main>
      </div>
    </nav>
  );
}

export default Header;