// ===============================
// AVVIO
// ===============================
console.log("main.js avviato");

// ===============================
// PATCH: misura l'altezza reale dell'header e aggiorna --header-h
// (serve per far partire la mappa subito sotto l’header, anche su mobile)
// ===============================
(function () {
  const root = document.documentElement;
  const header = document.querySelector('header');

  function setHeaderHeight() {
    const h = header ? Math.round(header.getBoundingClientRect().height) : 60;
    root.style.setProperty('--header-h', h + 'px');
  }

  setHeaderHeight();

  if (window.ResizeObserver && header) {
    const ro = new ResizeObserver(setHeaderHeight);
    ro.observe(header);
  } else {
    window.addEventListener('resize', setHeaderHeight);
    window.addEventListener('orientationchange', setHeaderHeight);
  }

  window.addEventListener('load', setHeaderHeight);
})();

// ===============================
// PATCH: quando si apre la mappa (#globalMap.open) invalida le dimensioni Leaflet
// (utile perché prima era display:none; invalidateSize evita “tagli” o tile sfasati)
// ===============================
(function () {
  const mapEl = document.getElementById('globalMap');
  if (!mapEl) return;

  function invalidateWhenOpen() {
    if (!mapEl.classList.contains('open')) return;
    // Aspetta un tick così il layout è aggiornato
    setTimeout(() => {
      try {
        // Sostituisci con la tua variabile dell'istanza L.map, se diversa
        window.leafletMapInstance?.invalidateSize();
      } catch (e) {
        console.warn('invalidateSize non eseguito:', e);
      }
    }, 0);
  }

  // 1) Osserva il cambio classe (quando aggiungi .open)
  const mo = new MutationObserver((mutations) => {
    if (mutations.some(m => m.attributeName === 'class')) {
      invalidateWhenOpen();
    }
  });
  mo.observe(mapEl, { attributes: true, attributeFilter: ['class'] });

  // 2) Fallback: se usi il bottone #openMapBtn per aprire/chiudere
  document.getElementById('openMapBtn')?.addEventListener('click', () => {
    setTimeout(invalidateWhenOpen, 0);
  });
})();

// ===============================
// LOGIN AUTOMATICO SU INDEX
// ===============================
document.addEventListener("DOMContentLoaded", async () => {
  try {
    // 1) Carica config
    const cfgRes = await fetch('/config');
    const cfg = await cfgRes.json();
    window.BASE_URL = cfg.baseUrl;

    // 2) Recupera token salvato
    const savedToken = localStorage.getItem("token");

    // Se non c'è token → mostra login
    if (!savedToken) {
      document.getElementById("loginModal").style.display = "flex";
      return;
    }

    // 3) Verifica token
    const ping = await fetch(`${window.BASE_URL}/photos`, {
      headers: { "Authorization": "Bearer " + savedToken }
    });

    if (!ping.ok) {
      // Token invalido → cancella e mostra login
      localStorage.removeItem("token");
      document.getElementById("loginModal").style.display = "flex";
      return;
    }

    // 4) Token valido → salva e carica gallery
    window.token = savedToken;
    loadPhotos();

  } catch (err) {
    console.error("Errore autenticazione:", err);
    document.getElementById("loginModal").style.display = "flex";
  }
});

// ===============================
// VARIABILI GLOBALI
// ===============================
let currentSort = "desc";
let currentGroup = "auto";
let currentFilter = null;

window.currentSort = currentSort;
window.currentGroup = currentGroup;
window.currentFilter = currentFilter;

// ===============================
// MENU ⋮
// ===============================
const optionsBtn = document.getElementById("optionsBtn");
const optionsSheetEl = document.getElementById("optionsSheet");

optionsBtn?.addEventListener("click", () => {
  optionsSheetEl?.classList.add("open");
});

// ===============================
// BOTTONI OPZIONI
// ===============================
document.querySelectorAll("#optionsSheet .sheet-btn").forEach(btn => {
  btn.addEventListener("click", () => {
    if (btn.dataset.sort)   window.currentSort = currentSort = btn.dataset.sort;
    if (btn.dataset.group)  window.currentGroup = currentGroup = btn.dataset.group;
    if (btn.dataset.filter) window.currentFilter = currentFilter = btn.dataset.filter;

    optionsSheetEl?.classList.remove("open");
    refreshGallery();
  });
});

// ===============================
// REFRESH GALLERY
// ===============================
function refreshGallery() {
  console.log("Aggiornamento galleria...");

  const data = Array.isArray(window.photosData) ? window.photosData : [];
  let photos = [...data];

  if (typeof applyFilters === 'function') photos = applyFilters(photos);
  if (typeof sortByDate === 'function') photos = sortByDate(photos, currentSort);

  let sections = [{ label: 'Tutte', photos }];
  if (typeof groupByDate === 'function') sections = groupByDate(photos, currentGroup);

  if (typeof renderGallery === 'function') {
    renderGallery(sections);
  }
}

window.refreshGallery = refreshGallery;

// ===============================
// SETTINGS (⚙️) — apre admin.html
// ===============================
const settingsBtn = document.getElementById('settingsBtn');
settingsBtn?.addEventListener('click', () => {
  window.location.href = "admin.html";
});

// ===============================
// LOGIN SUBMIT
// ===============================
document.getElementById("loginSubmit").addEventListener("click", async () => {
  const email = document.getElementById("loginEmail").value;
  const password = document.getElementById("loginPassword").value;
  const errorEl = document.getElementById("loginError");

  errorEl.textContent = "";

  try {
    const res = await fetch(`${window.BASE_URL}/auth/login`, {
      method: "POST",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify({ email, password })
    });

    if (!res.ok) {
      errorEl.textContent = "Utente o password errati";
      return;
    }

    const data = await res.json();
    const token = data.token;

    // Salva token
    localStorage.setItem("token", token);
    window.token = token;

    // Chiudi login
    document.getElementById("loginModal").style.display = "none";

    // Carica gallery
    loadPhotos();

  } catch (err) {
    console.error("Errore login:", err);
    errorEl.textContent = "Errore di connessione al server";
  }
});