import { detectLanguage, translations } from "./i18n.js";
import { getRouteConfig, getRouteFromHash, loadPartial, navigateTo } from "./router.js";
import { TerminalConsole } from "./terminal-console.js";

const pageTitleEl = document.getElementById("pageTitle");
const pageOutletEl = document.getElementById("pageOutlet");
const navLinks = Array.from(document.querySelectorAll(".nav-link"));
const navGroups = Array.from(document.querySelectorAll(".nav-group.has-flyout"));
const navGroupToggles = Array.from(document.querySelectorAll("[data-group-toggle]"));
const sidebarToggleEl = document.getElementById("sidebarToggle");
const sidebarBackdropEl = document.getElementById("sidebarBackdrop");
const langKoEl = document.getElementById("langKo");
const langEnEl = document.getElementById("langEn");

let currentLanguage = detectLanguage();
let activeRoute = getRouteFromHash();
let activeController = null;

function t(key) {
  return translations[currentLanguage]?.[key] ?? translations.en[key] ?? key;
}

function applyTranslations(root = document) {
  document.documentElement.lang = currentLanguage;
  document.title = currentLanguage === "ko" ? "TeraClone 콘솔 서버" : "TeraClone Console Server";

  root.querySelectorAll("[data-i18n]").forEach((element) => {
    element.textContent = t(element.dataset.i18n);
  });

  updatePageTitle();
  updateLanguageButtons();
  activeController?.updateTranslations?.(t);
}

function updateLanguageButtons() {
  langKoEl?.classList.toggle("active", currentLanguage === "ko");
  langEnEl?.classList.toggle("active", currentLanguage === "en");
}

function updatePageTitle() {
  pageTitleEl.textContent = t(getRouteConfig(activeRoute).titleKey);
}

function setSidebarOpen(open) {
  document.body.classList.toggle("sidebar-open", open);
  if (sidebarBackdropEl) {
    sidebarBackdropEl.hidden = !open;
  }
}

function setActiveNav(routeName) {
  navLinks.forEach((item) => {
    item.classList.toggle("active", item.dataset.route === routeName);
  });
}

function bindNav() {
  navLinks.forEach((item) => {
    item.addEventListener("click", () => {
      navigateTo(item.dataset.route);
      navGroups.forEach((group) => group.classList.remove("open"));
      const parentGroup = item.closest(".nav-group");
      if (parentGroup && window.innerWidth > 920) {
        parentGroup.classList.add("suppress-hover");
      }
      item.blur();
    });
  });

  navGroups.forEach((group) => {
    group.addEventListener("mouseleave", () => {
      group.classList.remove("suppress-hover");
    });
  });

  navGroupToggles.forEach((toggle) => {
    toggle.addEventListener("click", () => {
      if (window.innerWidth > 920) {
        return;
      }

      const group = toggle.closest(".nav-group");
      if (!group) {
        return;
      }

      const willOpen = !group.classList.contains("open");
      navGroups.forEach((item) => item.classList.remove("open"));
      group.classList.toggle("open", willOpen);
    });
  });
}

function bindChrome() {
  sidebarToggleEl?.addEventListener("click", () => {
    setSidebarOpen(!document.body.classList.contains("sidebar-open"));
  });

  sidebarBackdropEl?.addEventListener("click", () => {
    setSidebarOpen(false);
  });

  langKoEl?.addEventListener("click", () => {
    currentLanguage = "ko";
    localStorage.setItem("teraclone-language", currentLanguage);
    applyTranslations(document);
  });

  langEnEl?.addEventListener("click", () => {
    currentLanguage = "en";
    localStorage.setItem("teraclone-language", currentLanguage);
    applyTranslations(document);
  });

  window.addEventListener("resize", () => {
    if (window.innerWidth > 920) {
      setSidebarOpen(false);
      navGroups.forEach((group) => group.classList.remove("open"));
    }
  });
}

async function renderRoute(routeName) {
  activeController?.unmount?.();
  activeController = null;

  const partial = await loadPartial(routeName);
  pageOutletEl.innerHTML = partial;
  activeRoute = routeName;
  setActiveNav(routeName);
  applyTranslations(pageOutletEl);

  if (routeName === "terminal") {
    activeController = new TerminalConsole(t);
    activeController.mount();
  }

  if (window.innerWidth <= 920) {
    setSidebarOpen(false);
  }
}

async function syncRoute() {
  const routeName = getRouteFromHash();
  await renderRoute(routeName);
}

bindNav();
bindChrome();
applyTranslations(document);
window.addEventListener("hashchange", syncRoute);

if (!window.location.hash) {
  navigateTo("overview");
} else {
  syncRoute();
}