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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Menu - Biryani Hub</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            background-color: #f8f8f8;
            margin: 0;
            padding: 0;
        }

        .menu-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
            background-color: #fff;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
            border-radius: 8px;
            margin-top: 50px;
        }

        h1 {
            text-align: center;
            font-size: 2.5rem;
            color: #333;
            margin-bottom: 30px;
        }

        .menu-item {
            border-bottom: 1px solid #eee;
            padding: 15px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .order-btn {
            padding: 10px 20px;
            background-color: #4CAF50;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
        }

        .order-btn:hover {
            background-color: #45a049;
        }

        #listen-btn {
            padding: 10px 20px;
            background-color: #4CAF50;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 1.2rem;
            display: block;
            margin: 30px auto;
        }

        #listen-btn:hover {
            background-color: #45a049;
        }
    </style>
</head>
<body>

    <div class="menu-container">
        <h1>Welcome to the Menu</h1>

        <!-- Instructions for voice recognition -->
        <button id="listen-btn">Say "Appetizer" or "Main Course" to select a category</button>

        <!-- Display Menu Items dynamically -->
        <div id="menu-items"></div>

        <!-- Cart Summary Display -->
        <div id="cart-summary">
            <h2>Your Cart</h2>
            <ul id="cart-list"></ul>
            <p id="cart-total"></p>
            <button id="final-order-btn" style="display:none;" onclick="placeFinalOrder()">Place Final Order</button>
        </div>
    </div>

    <script>
        const listenButton = document.getElementById("listen-btn");
        const cartList = document.getElementById("cart-list");
        const cartTotal = document.getElementById("cart-total");
        let cart = [];
        let menuItems = {
            "Appetizer": [
                { name: "Samosa", price: 9, ingredients: "Potatoes, Peas, Flour, Spices" },
                { name: "Chilli Gobi", price: 12, ingredients: "Cauliflower, Chilli Sauce, Spices" }
            ],
            "Main Course": [
                { name: "Veg Biryani", price: 12, ingredients: "Mixed Vegetables, Basmati Rice, Spices" },
                { name: "Paneer Butter Masala", price: 10, ingredients: "Paneer, Tomatoes, Cream, Spices" },
                { name: "Chicken Biryani", price: 14, ingredients: "Chicken, Basmati Rice, Spices" }
            ]
        };

        let selectedCategory = null;
        let selectedItem = null;
        let currentItemName = null;
        
        const recognition = new (window.SpeechRecognition || window.webkitSpeechRecognition)();
        recognition.lang = "en-US";
        recognition.interimResults = false;

        function speak(text) {
            const msg = new SpeechSynthesisUtterance(text);
            window.speechSynthesis.speak(msg);
        }

        listenButton.addEventListener("click", () => {
            speak("Please say Appetizer or Main Course to select a category.");
            recognition.start();
        });

        recognition.onresult = (event) => {
            const command = event.results[0][0].transcript.toLowerCase();
            console.log("User said:", command);

            if (command.includes("appetizer")) {
                selectedCategory = "Appetizer";
                speak("You selected Appetizers. Here are the items.");
                showItems("Appetizer");
            } else if (command.includes("main course")) {
                selectedCategory = "Main Course";
                speak("You selected Main Course. Here are the items.");
                showItems("Main Course");
            } else {
                speak("I didn't understand that. Please say Appetizer or Main Course.");
            }
        };

        recognition.onerror = (event) => {
            console.error("Speech recognition error:", event.error);
            speak("Sorry, I couldn't understand that. Please try again.");
        };

        function showItems(category) {
            const itemsDiv = document.getElementById("menu-items");
            itemsDiv.innerHTML = ""; // Clear previous items

            menuItems[category].forEach(item => {
                const itemDiv = document.createElement("div");
                itemDiv.classList.add("menu-item");
                itemDiv.innerHTML = `
                    <div class="details">
                        <h3>${item.name}</h3>
                        <p><strong>Ingredients:</strong> ${item.ingredients}</p>
                        <p><strong>Price:</strong> $${item.price}</p>
                    </div>
                    <button class="order-btn" onclick="orderItem('${item.name}', ${item.price})">Order</button>
                `;
                itemsDiv.appendChild(itemDiv);
            });
        }

        function orderItem(itemName, itemPrice) {
            currentItemName = itemName;
            selectedItem = { name: itemName, price: itemPrice };
            speak(`How many quantities of ${itemName} would you like to order?`);
            recognition.onresult = (event) => {
                const quantity = parseInt(event.results[0][0].transcript);
                if (quantity && quantity > 0) {
                    addToCart(itemName, itemPrice, quantity);
                } else {
                    speak("Please say a valid quantity.");
                }
            };
        }

        function addToCart(itemName, itemPrice, quantity) {
            const existingItem = cart.find(item => item.name === itemName);
            if (existingItem) {
                existingItem.quantity += quantity;
            } else {
                cart.push({ name: itemName, price: itemPrice, quantity });
            }
            updateCartDisplay();
        }

        function updateCartDisplay() {
            cartList.innerHTML = '';
            let total = 0;
            cart.forEach(item => {
                const li = document.createElement('li');
                li.textContent = `${item.quantity} x ${item.name} - $${item.price * item.quantity}`;
                cartList.appendChild(li);
                total += item.price * item.quantity;
            });
            cartTotal.textContent = `Total: $${total}`;
            document.getElementById("final-order-btn").style.display = "block";
        }

        function placeFinalOrder() {
            if (cart.length === 0) {
                speak("Your cart is empty. Please add items to your cart before proceeding.");
                return;
            }

            let orderDetails = "Your final order is:\n";
            let total = 0;
            cart.forEach(item => {
                const itemTotal = item.quantity * item.price;
                orderDetails += `${item.quantity} x ${item.name} - $${itemTotal}\n`;
                total += itemTotal;
            });
            orderDetails += `Total price: $${total}. Your order will arrive soon. Thank you for visiting Biryani Hub!`;

            speak(orderDetails);

            fetch('/final-order', {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({ cart: cart, total: total })
            })
            .then(response => response.json())
            .then(data => {
                if (data.success) {
                    speak("Your order has been placed successfully.");
                    cart = [];
                    updateCartDisplay();
                } else {
                    speak("There was an issue placing your order. Please try again.");
                }
            })
            .catch(error => {
                console.error('Error placing the order:', error);
                speak("There was an error placing your order. Please try again.");
            });
        }
    </script>

</body>
</html>