/* ============================================================
   lomi — app principal (routing + carrito + favoritos + cuenta)
   ============================================================ */

// Claves de localStorage por usuario — cada cuenta tiene su propio carro y favoritos
function cartKey(user) { return user ? `lomi_cart_${user.id}` : 'lomi_cart_guest'; }
function favKey(user)  { return user ? `lomi_fav_${user.id}`  : 'lomi_fav_guest';  }
function loadCart(user) { try { return JSON.parse(localStorage.getItem(cartKey(user)) || '[]'); } catch { return []; } }
function loadFav(user)  { try { return JSON.parse(localStorage.getItem(favKey(user))  || '[]'); } catch { return []; } }

function App() {
  const [route, setRoute]   = useState({ name: "home" });
  const [query, setQuery]   = useState("");
  const [toast, setToast]   = useState(null);
  const [_v, _setV]         = useState(0);

  const [clientUser, setClientUserState] = useState(() => {
    try { return JSON.parse(localStorage.getItem('lomi_client_user') || 'null'); } catch { return null; }
  });

  const [cart, setCart]           = useState(() => loadCart(
    (() => { try { return JSON.parse(localStorage.getItem('lomi_client_user') || 'null'); } catch { return null; } })()
  ));
  const [favorites, setFavorites] = useState(() => loadFav(
    (() => { try { return JSON.parse(localStorage.getItem('lomi_client_user') || 'null'); } catch { return null; } })()
  ));

  const [resetToken] = useState(() => {
    const p = new URLSearchParams(window.location.search);
    return p.get('reset') || null;
  });

  const [paymentReturn] = useState(() => {
    const p = new URLSearchParams(window.location.search);
    const payment = p.get('payment');
    const order   = p.get('order');
    if (payment && order) return { status: payment, orderId: order };
    return null;
  });

  useEffect(() => {
    if (resetToken) setRoute({ name: 'account' });
  }, []);

  useEffect(() => {
    if (paymentReturn) {
      window.history.replaceState({}, '', '/');
      setRoute({ name: 'payment-return' });
    }
  }, []);

  const toastTimer = useRef(null);

  // Persistir carro y favoritos con clave por usuario
  useEffect(() => {
    localStorage.setItem(cartKey(clientUser), JSON.stringify(cart));
  }, [cart]);

  useEffect(() => {
    localStorage.setItem(favKey(clientUser), JSON.stringify(favorites));
  }, [favorites]);

  // Trigger re-render desde el admin preview
  window.__lomi_reload = useCallback(() => _setV(v => v + 1), []);

  const go = useCallback((r) => {
    setRoute(r);
    if (r.q !== undefined) setQuery(r.q);
    window.scrollTo({ top: 0, behavior: "instant" in window ? "instant" : "auto" });
  }, []);

  const addToCart = useCallback((product, qty = 1) => {
    setCart((c) => {
      const ex = c.find((i) => i.id === product.id);
      if (ex) return c.map((i) => i.id === product.id ? { ...i, qty: i.qty + qty } : i);
      return [...c, { id: product.id, qty }];
    });
    setToast({ name: product.name, tint: product.tint, cat: product.category });
    clearTimeout(toastTimer.current);
    toastTimer.current = setTimeout(() => setToast(null), 2600);
  }, []);

  const setQty      = useCallback((id, qty) => setCart((c) => c.map((i) => i.id === id ? { ...i, qty } : i)), []);
  const removeItem  = useCallback((id) => setCart((c) => c.filter((i) => i.id !== id)), []);
  const clearCart   = useCallback(() => setCart([]), []);

  const toggleFavorite = useCallback((productId) => {
    setFavorites(f => f.includes(productId) ? f.filter(id => id !== productId) : [...f, productId]);
  }, []);

  const setClientUser = useCallback((user) => {
    setClientUserState(user);
    if (user) {
      localStorage.setItem('lomi_client_user', JSON.stringify(user));
    } else {
      localStorage.removeItem('lomi_client_user');
      localStorage.removeItem('lomi_client_token');
    }
    // Cargar carro y favoritos del nuevo usuario (o invitado)
    setCart(loadCart(user));
    setFavorites(loadFav(user));
  }, []);

  const cartCount = cart.reduce((s, i) => s + i.qty, 0);

  const favProps = { favorites, onToggleFavorite: toggleFavorite };

  let screen;
  if (route.name === "home")             screen = <Home go={go} addToCart={addToCart} _v={_v} {...favProps} />;
  else if (route.name === "catalog")     screen = <Catalog route={route} go={go} addToCart={addToCart} query={query} onSearch={setQuery} _v={_v} {...favProps} />;
  else if (route.name === "product")     screen = <Product route={route} go={go} addToCart={addToCart} _v={_v} {...favProps} />;
  else if (route.name === "cart")        screen = <Cart cart={cart} go={go} setQty={setQty} removeItem={removeItem} />;
  else if (route.name === "checkout")    screen = <Checkout cart={cart} go={go} clearCart={clearCart} route={route} />;
  else if (route.name === "favorites")   screen = <Favorites go={go} addToCart={addToCart} {...favProps} />;
  else if (route.name === "account")     screen = <Account clientUser={clientUser} setClientUser={setClientUser} go={go} resetToken={resetToken} />;
  else if (route.name === "payment-return") screen = <PaymentReturn status={paymentReturn && paymentReturn.status} orderId={paymentReturn && paymentReturn.orderId} go={go} />;
  else if (route.name === "tracking")       screen = <TrackingPage go={go} route={route} />;

  const settings = (window.LOMI_DATA && window.LOMI_DATA.settings) || {};
  const waActive  = settings.whatsapp_float_active === '1';
  const waNumber  = settings.social_whatsapp || '';
  const waMsg     = settings.whatsapp_float_message || '¡Hola! Necesito ayuda con mi pedido.';
  const waHref    = waNumber ? `https://wa.me/${waNumber.replace(/\D/g,'')}?text=${encodeURIComponent(waMsg)}` : null;

  return (
    <div className="app-shell">
      <Nav route={route} go={go} cartCount={cartCount} onSearch={setQuery} query={query} _v={_v}
           favorites={favorites} clientUser={clientUser} />
      <div className="app-body">{screen}</div>
      <Footer go={go} _v={_v} />

      {waActive && waHref && (
        <a href={waHref} target="_blank" rel="noopener noreferrer" className="wa-float" title="Chatear por WhatsApp" aria-label="WhatsApp">
          <svg viewBox="0 0 24 24" fill="currentColor" width="28" height="28">
            <path d="M17.472 14.382c-.297-.149-1.758-.867-2.03-.967-.273-.099-.471-.148-.67.15-.197.297-.767.966-.94 1.164-.173.199-.347.223-.644.075-.297-.15-1.255-.463-2.39-1.475-.883-.788-1.48-1.761-1.653-2.059-.173-.297-.018-.458.13-.606.134-.133.298-.347.446-.52.149-.174.198-.298.298-.497.099-.198.05-.371-.025-.52-.075-.149-.669-1.612-.916-2.207-.242-.579-.487-.5-.669-.51-.173-.008-.371-.01-.57-.01-.198 0-.52.074-.792.372-.272.297-1.04 1.016-1.04 2.479 0 1.462 1.065 2.875 1.213 3.074.149.198 2.096 3.2 5.077 4.487.709.306 1.262.489 1.694.625.712.227 1.36.195 1.871.118.571-.085 1.758-.719 2.006-1.413.248-.694.248-1.289.173-1.413-.074-.124-.272-.198-.57-.347m-5.421 7.403h-.004a9.87 9.87 0 01-5.031-1.378l-.361-.214-3.741.982.998-3.648-.235-.374a9.86 9.86 0 01-1.51-5.26c.001-5.45 4.436-9.884 9.888-9.884 2.64 0 5.122 1.03 6.988 2.898a9.825 9.825 0 012.893 6.994c-.003 5.45-4.437 9.884-9.885 9.884m8.413-18.297A11.815 11.815 0 0012.05 0C5.495 0 .16 5.335.157 11.892c0 2.096.547 4.142 1.588 5.945L.057 24l6.305-1.654a11.882 11.882 0 005.683 1.448h.005c6.554 0 11.89-5.335 11.893-11.893a11.821 11.821 0 00-3.48-8.413Z"/>
          </svg>
        </a>
      )}

      {/* toast agregado al carro */}
      <div className={"toast " + (toast ? "show" : "")}>
        {toast && (
          <>
            <span className="toast-ic" style={{ background: toast.tint }}>
              <Icon name="check" size={18} />
            </span>
            <div className="toast-text">
              <strong>Agregado al carro</strong>
              <span>{toast.name}</span>
            </div>
            <button className="toast-cta" onClick={() => { setToast(null); go({ name: "cart" }); }}>Ver carro</button>
          </>
        )}
      </div>
    </div>
  );
}

ReactDOM.createRoot(document.getElementById("root")).render(<App />);
