pedidos-express/public/main/js/app.js

//--- Imports ---
import { getOnlineUserCount, getUserList } from './service/chat.js';
import { getProducts, sendOrder } from './service/product.js';
import { login } from './service/auth.js';
import { createGlobalLoader, showGlobalLoader, hideGlobalLoader } from './utils/loader.js';
import { updateProgress, claimReward } from './utils/progressBar.js';
import { showError } from './utils/error.js';
import { addHistoryRow, setupShoppingCart } from './utils/shoppingCart.js';
import { hideGUI, showGUI } from './utils/gui.js';
import { smartSearch } from './utils/searching.js';
import { getUserData } from './service/user.js';

// --- Variables Globales ---

// --- User Data ---
let userId = -1;
let userName = "Cliente";
let chatUserName = "prueba_mesa43"
let userTable = null;
let userToken = null;
let chatWebsocket = null;

// --- Products & Cart ---
let Allproducts = [];
let cart = [];
let itsEmpty = true;
let cacheMode = false;

// --- Configuration ---
const favoriteCategories = ["Shop", "Pizzas Familiares", "Pizza Medianas"];
const productPriority = {
    "Shop": [
        6, 12, 163, 168, 15, 665, 1
    ],
    "Cervezas": [
        17, 
    ],
    "Coctelería Gin Klein": [
        655
    ],
    "Pizzas Familiares": [
        27
    ],
    "Pizza Medianas": [
        2
    ]
}

// --- Chat History ---
let chatHistory = [
    { 
        user: "name",
        time: "00:00",
        content: "Hola Mundo" 
    }
];

const userColors = [
  // Rojos
  "text-red-500", "text-red-600", "text-rose-500", "text-rose-600",
  "text-orange-500", "text-orange-600", "text-amber-500", "text-amber-600",

  // Amarillos / dorados
  "text-yellow-500", "text-yellow-600", "text-lime-500", "text-lime-600",

  // Verdes
  "text-green-500", "text-green-600", "text-emerald-500", "text-emerald-600",
  "text-teal-500", "text-teal-600", "text-cyan-500", "text-cyan-600",

  // Azules
  "text-sky-500", "text-sky-600", "text-blue-500", "text-blue-600",
  "text-indigo-500", "text-indigo-600",

  // Violetas / púrpuras    æ
  "text-violet-500", "text-violet-600", "text-purple-500", "text-purple-600",
  "text-fuchsia-500", "text-fuchsia-600", "text-pink-500", "text-pink-600",

  // Neutros variados
  "text-gray-500", "text-gray-600", "text-zinc-500", "text-zinc-600",
  "text-neutral-500", "text-neutral-600", "text-stone-500", "text-stone-600"
];


//--- Elementos del DOM ---

// --- Product & Cart Elements ---
const productListElement = document.getElementById("productList");
const cartItemsElement = document.getElementById("cartItems");
const cartTotalElement = document.getElementById("cartTotal");
const emptyCartTextElement = document.getElementById("emptyCartText");
const checkoutButton = document.getElementById("checkoutButton");
const originalCheckoutButtonText = checkoutButton ? checkoutButton.textContent : "Finalizar Pedido";
const cartCountElement = document.getElementById("cartCount");

// --- Chat Elements ---
const chatMessagesElement = document.getElementById("chatMessages");
const chatInputElement = document.getElementById("chatInput");
const chatForm = document.getElementById("chatForm");
const userList = document.getElementById("userList")
const onlineUsersElement = document.querySelector("#onlineUsers h4");
// --- Reward Elements ---
const rewardBtn = document.getElementById('rewardBtn');
const rewardModal = document.getElementById('rewardModal');
const closeRewardModal = document.getElementById('closeRewardModal');
const closeSuccessRewardModalButton = document.getElementById('closeSuccessRewardModal');
const cancelRewardBtn = document.getElementById('cancelRewardBtn');
const acceptTermsCheckbox = document.getElementById('acceptTermsCheckbox');
const claimRewardBtn = document.getElementById('claimRewardBtn');

//--- Inicialización y Configuración ---

/**
 * Main application initialization
 */
async function initializeApp() {
    showGlobalLoader("Cargando productos...");
    chatUserName = userName.split(" ")[0].toLowerCase() + "_mesa"+userTable
    initializeChat();
    initializeWebSocket();
    await initializeProducts();
    await renderProducts(Allproducts);
    setupSearchListener();
    updateCartDisplay();
    setupShoppingCart(userId, userToken, userName);
    setupBasicListeners();
    showGUI();
    hideGlobalLoader();
}

/**
 * Initialize login modal and authentication
 */
function initializeLoginModal() {
    const sessionModal = document.getElementById('sessionModal');
    const loginForm = document.getElementById('loginForm');
    const logoutBtn = document.getElementById('logoutBtn');
    sessionModal.classList.remove('hidden');

    // Login form submission
    loginForm.addEventListener('submit', async (event) => {
        event.preventDefault();
        event.stopPropagation();
        const fd = new FormData(loginForm);
        if (cacheMode) {
            userTable = Number(fd.get('table').trim());
            sessionModal.classList.add('hidden');
            initializeApp();
            return;
        }
        const email = fd.get('email').trim();
        const pin = fd.get('pin').trim();
        userTable = Number(fd.get('table').trim());

        if (!email || !pin || !userTable) {
            showError("Por favor, completa todos los campos.");
            return;
        }
        try {
            const { data } = await login(email, pin);
            userToken = data.token;
            userName = data.name;
            userId = data.id;
            setCookie("userToken", userToken, 7);
            updateProgress(data.reward_progress || 0);
            if (!userToken || data.id === undefined) {
                showError("Error al iniciar sesión.");
                return;
            }

            sessionModal.classList.add('hidden');
            initializeApp();
        } catch (error) {
            console.error(error);
        }
    });
    // Logout functionality
    if (logoutBtn) {
        logoutBtn.addEventListener('click', () => {
            setCookie("userToken", "", -1);
            userId = -1;
            userName = "Cliente";
            userTable = null;
            userToken = null;
            cacheMode = false;
            hideGUI();
            sessionModal.classList.remove('hidden');false
            
            // Reset UI elements
            document.querySelector("#emailInputContainer").classList.remove("hidden");
            document.querySelector("#pinInputContainer").classList.remove("hidden");
            document.getElementById("loginTitle").textContent = "¡Bienvenido!";
            document.querySelector("#emailInput").setAttribute("required", "");
            document.querySelector("#pinInput").setAttribute("required", "");
            logoutBtn.classList.add("hidden");
            document.querySelector("#recoveryPIN").classList.remove("hidden");
        });
    }
}

function initializeWebSocket() {
    if (!chatWebsocket) {
        const wsProtocol = location.protocol === 'https:' ? 'wss' : 'ws';
        chatWebsocket = new WebSocket(`${wsProtocol}://${location.host}/api/chat/ws?token=${userToken}`);
        chatWebsocket.onopen = () => {
            chatWebsocket.send(JSON.stringify({
                type: "join",
                username: chatUserName
            }));
        }
        getOnlineUserCount(userToken).then(count => {
            onlineUsersElement.innerText = `${count} Usuario${count !== 1 ? 's' : ''} en línea`;
        });
        chatWebsocket.onmessage = (event) => {
            const data = JSON.parse(event.data);
            if (data.type === "message") {
                displayChatMessage(data.username, data.message);
            }
            else if (data.type === "join") {
                newUserInChat(data.username);
                getOnlineUserCount(userToken).then(count => {
                    onlineUsersElement.innerText = `${count} Usuario${count !== 1 ? 's' : ''} en línea`;
                });
            }
            else if (data.type === "leave") {
                userLeftChat(data.username);
                getOnlineUserCount(userToken).then(count => {
                    onlineUsersElement.innerText = `${count} Usuario${count !== 1 ? 's' : ''} en línea`;
                });
            }
            else if (data.type === "mentioned") {
                if (data.username && data.username !== chatUserName) return; // not for me
                showMentioned();
            }
            else if (data.type === "ping") {
                chatWebsocket.send(JSON.stringify({
                    type: "pong"
                }));
            }
        }
    }
}

async function sendMessage(message) {
    if (chatWebsocket) {
        if (chatWebsocket.readyState !== WebSocket.OPEN) {
            console.error("WebSocket is not open, reopening...");
            chatWebsocket = null;
            initializeWebSocket();
        }
        await chatWebsocket.send(JSON.stringify({
            type: "message",
            username: chatUserName,
            message: message
        }));
        let mentions_repeated = [];
        await setTimeout(() => {
        const mentionRegex = /@([a-zA-Z0-9_]+_mesa\d+|IAKlein)/g;
        const mentions = message.match(mentionRegex);
        if (mentions) {
            mentions.forEach(mention => {
                const username = mention.slice(1);
                const exist = mentions_repeated.find(u => u === username);
                console.log("Mentioned user:", username,"List", mentions_repeated, "Exist before:", exist);
                if (exist || username === chatUserName) return; // don't mention myself if multiple mentions
                mentions_repeated.push(username);
                if (username === "IAKlein"){
                    sendMessageToAI(message);
                }else {
                    userMentioned(username);
                }
            });
        }
        }, 1000); // small delay to ensure message order
        // regex  text_mesa111 or IAKlein
        
    }
}
function userMentioned(username) {
    chatWebsocket.send(JSON.stringify({
        type: "mention",
        username: username
    }));
}
/**
 * Initialize chat functionality
 */
function initializeChat() {
    if (!chatForm) return;
    chatForm.addEventListener("submit", (event) => {
        event.preventDefault();
        if (chatInputElement.value.trim() === "") return;

        chatForm.querySelector("button").animate(
        [{ transform: 'scale(1)' }, { transform: 'scale(0.9)' }, { transform: 'scale(1)' }],
        { duration: 200, iterations: 1, easing: 'ease-in-out' }
    )
        sendMessage(chatInputElement.value.trim());
        chatInputElement.value = "";
    });
    
    let debounceTimer;
    chatInputElement.addEventListener("input", () => {
        const lastWord = chatInputElement.value.split(" ").at(-1);
        if (lastWord.trim().startsWith("@")) {
            clearTimeout(debounceTimer);
            debounceTimer = setTimeout(async () => {
                userList.classList.remove("hidden");
                let users = await getUserList(lastWord.trim().substring(1), userToken);
                users = users.filter(u => u !== chatUserName);
                users.push("IAKlein");
                userList.innerHTML = "";
                users.forEach(user => {
                    const userItem = document.createElement("button");
                    userItem.type = "button";
                    userItem.onclick = () => {
                        // Replace the last occurrence of lastWord with @user
                        const inputValue = chatInputElement.value;
                        const lastWordIndex = inputValue.lastIndexOf(lastWord);
                        if (lastWordIndex !== -1) {
                            chatInputElement.value = inputValue.slice(0, lastWordIndex) + `@${user}` + inputValue.slice(lastWordIndex + lastWord.length);
                        }
                        userList.classList.add("hidden");
                        chatInputElement.value += " ";
                        chatInputElement.focus();
                    };
                    const color = getUserColor(user);
                    userItem.classList.add("list-user-name", "cursor-pointer", color);
                    userItem.textContent = user;
                    userList.appendChild(userItem);
                });
            }, 300); // Debounce delay (300ms)
        } else {
            userList.classList.add("hidden");
            clearTimeout(debounceTimer);
        }
    });
}

/**
 * Setup basic event listeners
 */
function setupBasicListeners() {
    if (!checkoutButton) return;
    
    checkoutButton.addEventListener("click", processOrder);
    initializeRewards();
}

/**
 * Setup search functionality with debouncing
 */
function setupSearchListener() {
    const searchInput = document.getElementById("searchInput");
    if (!searchInput) return;
    
    let debounceTimer;
    
    searchInput.addEventListener("input", () => {
        clearTimeout(debounceTimer);
        
        // Visual feedback during search
        productListElement.style.opacity = "0.7";
        productListElement.style.transform = "scale(0.98)";
        productListElement.style.transition = "opacity 0.2s ease, transform 0.2s ease";
        
        // Debounce search for 200ms
        debounceTimer = setTimeout(() => {
            const searchTerm = searchInput.value.toLowerCase();
            if (searchTerm.trim() === "") {
                renderProductsWithAnimation(Allproducts);
                return;
            }
            
            const foundProducts = smartSearch(Allproducts, searchTerm);
            renderProductsWithAnimation(foundProducts, true, searchTerm);
        }, 200);
    });
}
//--- Funciones de Utilidad ---

/**
 * Set a cookie with expiration
 */
function setCookie(name, value, days) {
    const expires = new Date(Date.now() + days * 24 * 60 * 60 * 1000).toUTCString();
    document.cookie = `${name}=${value}; expires=${expires}; path=/`;
}

/**
 * Get a cookie value by name
 */
function getCookie(name) {
    const cookies = document.cookie.split('; ');
    for (const cookie of cookies) {
        const [cookieName, cookieValue] = cookie.split('=');
        if (cookieName === name) {
            return decodeURIComponent(cookieValue);
        }
    }
    return null;
}
/**

 * Check and validate cached user data
 */
async function checkCache() {
    const tokenCache = getCookie("userToken");
    let user = null;
    
    if (tokenCache) {
        userToken = tokenCache;
        try {
            const data = await getUserData(userToken);
            user = data.data;
        } catch (error) {
            console.error("Error fetching user data:", error);
            console.error("Invalid user token, clearing cache.");
            setCookie("userToken", "", -1);
            return false;
        }
        
        if (user) {
            userId = user.id;
            userName = user.name;
            updateProgress(user.reward_progress || 0);
            
            // Update UI for cached user
            const [emailInputContainer, pinInputContainer] = [
                document.getElementById("emailInputContainer"), 
                document.getElementById("pinInputContainer")
            ];
            const [emailInput, pinInput] = [
                document.getElementById("emailInput"), 
                document.getElementById("pinInput")
            ];
            const loginTitle = document.getElementById("loginTitle");
            
            loginTitle.textContent = `¡Bienvenido ${user.name.split(" ")[0]}!`;
            emailInputContainer.classList.add("hidden");
            emailInput.removeAttribute("required");
            pinInputContainer.classList.add("hidden");
            pinInput.removeAttribute("required");
            document.querySelector("#logoutBtn").classList.remove("hidden");
            document.querySelector("#recoveryPIN").classList.add("hidden");
            cacheMode = true;
            return true;
        }
    }
    return cacheMode;
}

/**
 * Format price to Chilean peso currency
 */
function formatPrice(price) {
    return price.toLocaleString("es-CL", { style: "currency", currency: "CLP" });
}
//--- Gestión de Productos ---

/**
 * Initialize products from API
 */
async function initializeProducts() {
    Allproducts = await getProducts(userToken);
}

/**
 * Create category containers for products
 */
async function createCategories(products) {
    let categories = new Set(products.map(product => product.type || "Sin categoría"));
    categories = Array.from(categories).sort((a, b) => a.localeCompare(b));
    
    // Prioritize favorite categories
    for (const category of favoriteCategories.reverse()) {
        if (categories.includes(category)) {
            categories = categories.filter(cat => cat !== category);
            categories.unshift(category);
        }
    }
    
    if (!productListElement) return;

    const categoryContainers = categories.map(category => {
        const container = document.createElement("div");
        container.classList.add("category-container", "mb-8", "p-4");
        
        const title = document.createElement("h2");
        title.classList.add("category-title", "text-3xl", "font-bold", "border-b-2", "pb-3", "mb-4");
        
        // Pluralize category name
        const lastChar = category.charAt(category.length - 1).toLowerCase();
        const pluralSuffix = ["a", "e", "i", "o", "u", "á", "é", "í", "ó", "ú", "p"].includes(lastChar) 
            ? "s" 
            : lastChar === "s" ? "" : "es";
        title.textContent = category + pluralSuffix;
        
        container.appendChild(title);
        
        const productList = document.createElement("div");
        productList.classList.add("product-list", "space-y-6");
        productList.id = `productList-${category}`;
        container.appendChild(productList);
        productListElement.appendChild(container);

        return { category, container: productList };
    });

    return categoryContainers;
}

/**
 * Render products in their respective categories
 */
async function renderProducts(products, groupInCategories = true, searchTerm = "") {
    if (!productListElement) return;

    const template = document.getElementById("product-card-template");
    if (!template) return;

    productListElement.innerHTML = "";
    let categoryContainers = [];
    
    if (groupInCategories) {
        categoryContainers = await createCategories(products);
    } else {
        categoryContainers = [{ category: searchTerm, container: productListElement }];
    }
    
    if (products.length === 0) {
        const noProductsMessage = document.createElement("p");
        noProductsMessage.textContent = "No hay productos disponibles.";
        productListElement.appendChild(noProductsMessage);
        return;
    }

    for (const { category, container } of categoryContainers) {
        let productsInCategory = groupInCategories 
            ? products.filter(product => product.type === category)
            : products;
        // Prioritize products in favorite categories
        if (favoriteCategories.includes(category) && productPriority[category]) {
            productsInCategory.sort((a, b) => {
            const aIndex = productPriority[category].indexOf(a.id);
            const bIndex = productPriority[category].indexOf(b.id);
            
            // If both products are in priority list, sort by their priority order
            if (aIndex !== -1 && bIndex !== -1) {
                return aIndex - bIndex;
            }
            // If only 'a' is in priority list, it should come first
            if (aIndex !== -1 && bIndex === -1) {
                return -1;
            }
            // If only 'b' is in priority list, it should come first
            if (aIndex === -1 && bIndex !== -1) {
                return 1;
            }
            // If neither is in priority list, maintain original order
            return 0;
            });
        }
        if (productsInCategory.length === 0) continue;

        productsInCategory.forEach(product => {
            const clone = template.content.cloneNode(true);

            clone.querySelector(".product-type").textContent = product.type || "Sin categoría";
            clone.querySelector(".product-name").textContent = product.name;
            clone.querySelector(".product-description").textContent = product.description;
            clone.querySelector(".product-price").textContent = formatPrice(product.price);
            clone.querySelector(".product-image").style.backgroundImage = `url('${product.image}')`;

            const addBtn = clone.querySelector(".add-to-cart-btn");
            addBtn.dataset.productId = product.id;
            addBtn.addEventListener('click', (event) => {
                const productId = parseInt(event.target.dataset.productId);
                addToCart(productId, event.target);
            });

            container.appendChild(clone);
        });
    }
}

/**
 * Render products with smooth animations
 */
async function renderProductsWithAnimation(products, groupInCategories = true, searchTerm = "") {
    if (!productListElement) return;

    const template = document.getElementById("product-card-template");
    if (!template) return;

    // Fade out current content
    productListElement.style.opacity = "0";
    productListElement.style.transform = "scale(0.95)";
    
    setTimeout(async () => {
        productListElement.innerHTML = "";
        let categoryContainers = [];
        
        if (groupInCategories) {
            categoryContainers = await createCategories(products);
        } else {
            categoryContainers = [{ category: searchTerm, container: productListElement }];
        }
        
        // ordenar las categorias por favoriteCategories
        categoryContainers.sort((a, b) => {
            const aIndex = favoriteCategories.indexOf(a.category);
            const bIndex = favoriteCategories.indexOf(b.category);
            return aIndex - bIndex;
        });

        if (products.length === 0) {
            const noProductsMessage = document.createElement("p");
            noProductsMessage.textContent = "No hay productos disponibles.";
            noProductsMessage.style.opacity = "0";
            noProductsMessage.style.transform = "translateY(20px)";
            noProductsMessage.style.transition = "opacity 0.3s ease, transform 0.3s ease";
            productListElement.appendChild(noProductsMessage);
            
            // Restore container
            productListElement.style.opacity = "1";
            productListElement.style.transform = "scale(1)";
            
            // Animate message
            setTimeout(() => {
                noProductsMessage.style.opacity = "1";
                noProductsMessage.style.transform = "translateY(0)";
            }, 50);
            return;
        }

        let animationDelay = 0;
        for (const { category, container } of categoryContainers) {
            let productsInCategory = groupInCategories 
                ? products.filter(product => product.type === category)
                : products;

            if (productsInCategory.length === 0) continue;

            if (favoriteCategories.includes(category) && productPriority[category]) {
            productsInCategory.sort((a, b) => {
            const aIndex = productPriority[category].indexOf(a.id);
            const bIndex = productPriority[category].indexOf(b.id);
            
            // If both products are in priority list, sort by their priority order
            if (aIndex !== -1 && bIndex !== -1) {
                return aIndex - bIndex;
            }
            // If only 'a' is in priority list, it should come first
            if (aIndex !== -1 && bIndex === -1) {
                return -1;
            }
            // If only 'b' is in priority list, it should come first
            if (aIndex === -1 && bIndex !== -1) {
                return 1;
            }
            // If neither is in priority list, maintain original order
            return 0;
            });
        }

            productsInCategory.forEach((product, index) => {
                const clone = template.content.cloneNode(true);

                clone.querySelector(".product-type").textContent = product.type || "Sin categoría";
                clone.querySelector(".product-name").textContent = product.name;
                clone.querySelector(".product-description").textContent = product.description;
                clone.querySelector(".product-price").textContent = formatPrice(product.price);
                clone.querySelector(".product-image").style.backgroundImage = `url('${product.image}')`;

                const addBtn = clone.querySelector(".add-to-cart-btn");
                addBtn.dataset.productId = product.id;
                addBtn.addEventListener('click', (event) => {
                    const productId = parseInt(event.target.dataset.productId);
                    addToCart(productId, event.target);
                });

                // Get the first child (the product card element)
                const productCard = clone.children[0];
                
                // Set initial animation state
                productCard.style.opacity = "0";
                productCard.style.transform = "translateY(20px) scale(0.95)";
                productCard.style.transition = "opacity 0.4s ease, transform 0.4s ease";

                container.appendChild(clone);

                // Animate in with staggered delay
                setTimeout(() => {
                    productCard.style.opacity = "1";
                    productCard.style.transform = "translateY(0) scale(1)";
                }, animationDelay);
                
                animationDelay += 50; // 50ms delay between each product
            });
        }

        // Restore container with smooth transition
        productListElement.style.opacity = "1";
        productListElement.style.transform = "scale(1)";
        
    }, 150); // Wait for fade out to complete
}
//--- Gestión del Carrito ---

/**
 * Add product to cart with visual feedback
 */
window.addToCart = function(productId, buttonElement = null) {
    const product = Allproducts.find(p => p.id === productId);
    if (!product) return;
    
    const cartItem = cart.find(item => item.id === productId);
    if (cartItem) {
        cartItem.quantity++;
    } else {
        cart.push({ ...product, quantity: 1 });
    }

    // Visual feedback for button
    if (buttonElement) {
        const originalHTML = buttonElement.innerHTML;
        buttonElement.textContent = "✔ Agregado!";
        buttonElement.disabled = true;
        setTimeout(() => {
            buttonElement.innerHTML = originalHTML;
            buttonElement.disabled = false;
        }, 300);
    }
    
    updateCartDisplay();
    
    // Show toast notification if available
    if (typeof showToast === "function") {
        showToast(`${product.name} agregado al carrito`);
    }
};

/**
 * Remove product from cart
 */
window.removeFromCart = function(productId, removeAll = false) {
    const itemIndex = cart.findIndex(item => item.id === productId);
    if (itemIndex > -1) {
        if (removeAll || cart[itemIndex].quantity === 1) {
            cart.splice(itemIndex, 1);
        } else {
            cart[itemIndex].quantity--;
        }
    }
    updateCartDisplay();
};

/**
 * Calculate total cart amount
 */
function calculateTotal() {
    if (!cartTotalElement) return;
    const total = cart.reduce((sum, item) => sum + item.price * item.quantity, 0);
    cartTotalElement.textContent = formatPrice(total);
}

/**
 * Update cart display with animations
 */
function updateCartDisplay() {
    if (!cartItemsElement || !emptyCartTextElement || !checkoutButton || !cartCountElement) return;
    
    cartItemsElement.innerHTML = "";
    cartCountElement.textContent = cart.reduce((sum, item) => sum + item.quantity, 0);
    
    if (cart.length === 0) {
        cartCountElement.classList.add("hidden");
        emptyCartTextElement.classList.remove("hidden");
        checkoutButton.disabled = true;
        itsEmpty = true;
    } else {
        cartCountElement.classList.remove("hidden");
        
        // Animate cart count badge
        if (cartCountElement && itsEmpty) {
            itsEmpty = false;
            cartCountElement.animate([
                { transform: 'scale(0)' },
                { transform: 'scale(1)' }
            ], {
                duration: 300,
                iterations: 1,
                easing: 'ease-in-out'
            });
        } else {
            cartCountElement.animate([
                { transform: 'scale(1) rotate(0deg)' },
                { transform: 'scale(1.2) rotate(180deg)' },
                { transform: 'scale(1) rotate(360deg)' }
            ], {
                duration: 300,
                iterations: 1,
                easing: 'ease-in-out'
            });
        }
        
        emptyCartTextElement.classList.add("hidden");
        checkoutButton.disabled = false;
        
        // Render cart items
        cart.forEach(item => {
            const cartItemHTML = `
                <div class="product-cart flex justify-between items-center border-b border-gray-700 pb-2 last:border-b-0 mb-2">
                    <div>
                        <h4 class="item-name-cart font-semibold text-base">${item.name} <span class="text-sm text-gray-400">(x${item.quantity})</span></h4>
                        <p class="text-sm accent-red">${formatPrice(item.price * item.quantity)}</p>
                    </div>
                    <div class="flex items-center gap-1 sm:gap-2">
                        <button onclick="addToCart(${item.id})" class="plus-button text-green-500 hover:text-green-400 text-lg sm:text-xl font-bold p-1 rounded-full hover:bg-gray-700 transition-colors">+</button>
                        <button onclick="removeFromCart(${item.id})" class="minus-button text-yellow-500 hover:text-yellow-400 text-lg sm:text-xl font-bold p-1 rounded-full hover:bg-gray-700 transition-colors">-</button>
                        <button onclick="removeFromCart(${item.id}, true)" class="remove-button text-red-500 hover:text-red-400 text-base sm:text-lg p-1 rounded-full hover:bg-gray-700 transition-colors">
                            <svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="w-4 h-4 sm:w-5 sm:h-5 pointer-events-none"><path stroke-linecap="round" stroke-linejoin="round" d="M14.74 9l-.346 9m-4.788 0L9.26 9m9.968-3.21c.342.052.682.107 1.022.166m-1.022-.165L18.16 19.673a2.25 2.25 0 01-2.244 2.077H8.084a2.25 2.25 0 01-2.244-2.077L4.772 5.79m14.456 0a48.108 48.108 0 00-3.478-.397m-12.56 0c1.153 0 2.24.032 3.22.096M15 5.79V4.5A2.25 2.25 0 0012.75 2.25h-1.5A2.25 2.25 0 009 4.5v1.29m0 0L9 19.5M15 5.79l-1.5-1.5M9 5.79l1.5-1.5" /></svg>
                        </button>
                    </div>
                </div>
            `;
            cartItemsElement.innerHTML += cartItemHTML;
        });
    }
    
    calculateTotal();
}
//--- Procesamiento de Pedidos ---

/**
 * Process and send order to backend
 */
async function processOrder() {
    if (cart.length === 0) return;
    
    showGlobalLoader();
    
    if (checkoutButton) {
        checkoutButton.disabled = true;
        checkoutButton.textContent = "Procesando...";
    }

    try {
        const orderData = {
            customerId: userId,
            table: userTable,
            items: cart.map(item => ({ 
                id: item.id, 
                price: item.price, 
                quantity: item.quantity 
            })),
            totalAmount: cart.reduce((sum, item) => sum + item.price * item.quantity, 0),
            orderDate: new Date().toLocaleString('sv-SE').replace(' ', 'T')
        };
        
        const data = await sendOrder(orderData, userToken);
        
        if (data && data.new_progress) {
            updateProgress(data.new_progress);
        }
        
        alert("Pedido enviado con éxito.");
        
        // Add items to history
        cart.forEach(item => {
            addHistoryRow({
                productName: item.name,
                quantity: item.quantity,
                price: item.price,
            });
        });
        
        // Clear cart
        cart = [];
        updateCartDisplay();
        
    } catch (error) {
        console.error("Error al procesar la orden:", error);
        alert(`Hubo un problema: ${error.message || "Por favor, inténtalo de nuevo."}`);
    } finally {
        hideGlobalLoader();
        checkoutButton.disabled = cart.length === 0;
        checkoutButton.textContent = originalCheckoutButtonText;
    }
}
//--- Funcionalidad del Chat ---

/**
 * Display chat message with proper styling
 */

function showMentioned(){
    const chatButton = document.querySelector("#chatIcon span");

    if (chatButton) {
        //get after element
        chatButton.classList.remove("hidden");
        chatButton.animate(
    [
        { transform: 'scale(1)' },
        { transform: 'scale(1.5)' },
        { transform: 'scale(1)' }
    ],
    {
        duration: 300,
        iterations: 3,
        easing: 'ease-in-out'
    }
);

    }
}
window.hideMentioned = function(){
    const chatButton = document.querySelector("#chatIcon span");
    if (chatButton) {
        chatButton.classList.add("hidden");
    }
}
function getUserColor(username) {
  const hash = [...username].reduce((acc, char) => acc + char.charCodeAt(0), 0);
  const color = userColors[hash % userColors.length];
  
  return color;
}

function displayChatMessage(sender, message, time = undefined) {
    let realtime = `[${time ? time : new Date().toLocaleTimeString([], { hour: '2-digit', minute: '2-digit', hour12: false })}] `;
    let messageTemplate = chatMessagesElement.querySelector("#chatMessageTemplate");
    if (!messageTemplate) return;

    let messageClone = messageTemplate.content.cloneNode(true).firstElementChild;
    messageClone.querySelector(".chat-message-text").innerHTML = message;
    messageClone.querySelector(".chat-message-time").innerHTML = realtime;
    messageClone.querySelector(".chat-message-user").innerHTML = sender
    messageClone.querySelector(".chat-message-user").classList.add(getUserColor(sender));
    chatMessagesElement.appendChild(messageClone);
    chatMessagesElement.scrollTop = chatMessagesElement.scrollHeight;
}

function newUserInChat(userName) {
    let userTemplate = chatMessagesElement.querySelector("#systemMessageTemplate");
    if (!userTemplate) return;

    const realtime = `[${new Date().toLocaleTimeString([], { hour: '2-digit', minute: '2-digit', hour12: false })}] `;

    let userClone = userTemplate.content.cloneNode(true).firstElementChild;
    userClone.classList.add("text-green-600");
    userClone.querySelector(".chat-message-time").innerHTML = realtime;
    userClone.querySelector(".chat-message-text").innerHTML = `*** ${userName} se ha unido al chat`;
    chatMessagesElement.appendChild(userClone);
}

function userLeftChat(userName) {
    let userTemplate = chatMessagesElement.querySelector("#systemMessageTemplate");
    if (!userTemplate) return;

    const realtime = `[${new Date().toLocaleTimeString([], { hour: '2-digit', minute: '2-digit', hour12: false })}] `;

    let userClone = userTemplate.content.cloneNode(true).firstElementChild;
    userClone.classList.add("text-red-600");
    userClone.querySelector(".chat-message-time").innerHTML = realtime;
    userClone.querySelector(".chat-message-text").innerHTML = `*** ${userName} se ha ido del chat`;
    chatMessagesElement.appendChild(userClone);
}

function sendMessageToAI(userMessage) {

    if (userMessage === "") return;
    const messages = Array.from(chatMessagesElement.querySelectorAll(".chat-message")).slice(-10);
    let formattedMessages = messages.map(msg => {
        const sender = msg.querySelector(".chat-message-user").textContent;
        const content = msg.querySelector(".chat-message-text").innerHTML;
        return { user: sender, content: content };
    });


    chatWebsocket.send(JSON.stringify({
        type: "ai_message",
        username: chatUserName,
        messages: formattedMessages
    }));
    chatInputElement.value = "";

}
//--- Sistema de Recompensas ---

/**
 * Initialize rewards functionality
 */
function initializeRewards() {
    // Event listeners for reward system
    closeSuccessRewardModalButton.addEventListener("click", closeSuccessRewardModal);

    rewardBtn.addEventListener('click', function () {
        if (!rewardBtn.disabled) {
            rewardModal.classList.remove('hidden');
            document.body.style.overflow = 'hidden';
        }
    });

    // Close modal - X button
    closeRewardModal.addEventListener('click', function () {
        closeModal();
    });

    // Close modal - Cancel button
    cancelRewardBtn.addEventListener('click', function () {
        closeModal();
    });

    // Close model - Back button on phone
    WindowEventHandlers.onpopstate = function (event) {
        if (!rewardModal.classList.contains('hidden')) {
            event.preventDefault();
            event.stopPropagation();
            closeModal();
        }
    }

    // Close modal - click outside
    rewardModal.addEventListener('click', function (e) {
        if (e.target === rewardModal) {
            closeModal();
        }
    });

    // Close modal - Escape key
    document.addEventListener('keydown', function (e) {
        if (e.key === 'Escape' && !rewardModal.classList.contains('hidden')) {
            closeModal();
        }
    });

    // Handle reward claim
    claimRewardBtn.addEventListener('click', function () {
        if (!this.disabled && acceptTermsCheckbox.checked) {
            claimReward(userToken, userTable);
            closeModal();
            updateProgress(0);
        }
    });

    // Handle terms checkbox
    acceptTermsCheckbox.addEventListener('change', function () {
        if (this.checked) {
            claimRewardBtn.disabled = false;
            claimRewardBtn.classList.remove('opacity-50', 'cursor-not-allowed');
        } else {
            claimRewardBtn.disabled = true;
            claimRewardBtn.classList.add('opacity-50', 'cursor-not-allowed');
        }
    });
}

/**
 * Close success reward modal
 */
function closeSuccessRewardModal() {
    const successRewardModal = document.getElementById("successRewardModal");
    successRewardModal.classList.add("hidden");
    document.body.style.overflow = '';
}

/**
 * Close reward modal and reset form
 */
function closeModal() {
    rewardModal.classList.add('hidden');
    document.body.style.overflow = '';

    // Reset form
    acceptTermsCheckbox.checked = false;
    claimRewardBtn.disabled = true;
    claimRewardBtn.classList.add('opacity-50', 'cursor-not-allowed');
}

//--- Inicialización de la Aplicación ---

/**
 * Initialize the application when DOM is loaded
 */
document.addEventListener("DOMContentLoaded", async () => {
    hideGUI();
    const isCacheValid = await checkCache();
    if (!isCacheValid) {
        console.warn("Cache is invalid");
    }
    
    createGlobalLoader();
    // Uncomment these lines when ready to initialize the full app:
    initializeLoginModal();
    // initializeApp();
});