import gradio as gr
import pandas as pd

# Function to load the menu data
def load_menu():
    menu_file = "menu.xlsx"  # Ensure this file exists in the same directory
    try:
        return pd.read_excel(menu_file)
    except Exception as e:
        raise ValueError(f"Error loading menu file: {e}")

# Initialize cart globally
cart_items = []

# Function to filter menu items based on preference
def filter_menu(preference):
    menu_data = load_menu()
    if preference == "Halal/Non-Veg":
        filtered_data = menu_data[menu_data["Ingredients"].str.contains("Chicken|Mutton|Fish|Prawns|Goat", case=False, na=False)]
    elif preference == "Vegetarian":
        filtered_data = menu_data[~menu_data["Ingredients"].str.contains("Chicken|Mutton|Fish|Prawns|Goat", case=False, na=False)]
    elif preference == "Guilt-Free":
        filtered_data = menu_data[menu_data["Description"].str.contains(r"Fat: ([0-9]|10)g", case=False, na=False)]
    else:
        filtered_data = menu_data

    html_content = ""
    for _, item in filtered_data.iterrows():
        html_content += f"""
        <div style="display: flex; align-items: center; border: 1px solid #ddd; border-radius: 8px; padding: 15px; margin-bottom: 10px; box-shadow: 0px 4px 8px rgba(0, 0, 0, 0.1);">
            <div style="flex: 1; margin-right: 15px;">
                <h3 style="margin: 0; font-size: 18px;">{item['Dish Name']}</h3>
                <p style="margin: 5px 0; font-size: 16px; color: #888;">${item['Price ($)']}</p>
                <p style="margin: 5px 0; font-size: 14px; color: #555;">{item['Description']}</p>
            </div>
            <div style="flex-shrink: 0; text-align: center;">
                <img src="{item['Image URL']}" alt="{item['Dish Name']}" style="width: 100px; height: 100px; border-radius: 8px; object-fit: cover; margin-bottom: 10px;">
                <button class="add-btn" style="background-color: #28a745; color: white; border: none; padding: 8px 15px; font-size: 14px; border-radius: 5px; cursor: pointer;" onclick="openModal(event, '{item['Dish Name']}', '{item['Image URL']}', '{item['Description']}', '{item['Price ($)']}')">Add</button>
            </div>
        </div>
        """
    return html_content

# Function to update the cart display
def update_cart(cart):
    global cart_items
    cart_items = cart  # Update global cart items
    if len(cart_items) == 0:
        return "Your cart is empty."
    cart_html = "<h3>Your Cart:</h3><ul>"
    for item in cart_items:
        extras = ", ".join(item.get("extras", []))
        cart_html += f"<li>{item['name']} (x{item['quantity']}, Spice: {item.get('spiceLevel', 'None')}, Extras: {extras}) - {item['price']}</li>"
    cart_html += "</ul>"
    return cart_html

# Gradio app definition
def app():
    with gr.Blocks() as demo:
        gr.Markdown("## Dynamic Menu with Preferences")

        # Radio button for selecting preference
        selected_preference = gr.Radio(
            choices=["All", "Vegetarian", "Halal/Non-Veg", "Guilt-Free"],
            value="All",
            label="Choose a Preference",
        )

        # Output area for menu items
        menu_output = gr.HTML(value=filter_menu("All"))

        # Cart display
        cart_output = gr.HTML(value="Your cart is empty.")

        # Modal window
        modal_window = gr.HTML("""
        <div id="modal" style="
            display: none;
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);  /* Centers the modal on the page */
            background: white;
            padding: 20px;
            border-radius: 15px;
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
            font-family: Arial, sans-serif;
            z-index: 1000;
            min-width: 350px;  /* Minimum width of the modal */
            min-height: 300px; /* Minimum height of the modal */
            overflow-y: auto;  /* Allow scrolling inside the modal if content is too tall */
        ">
            <div style="text-align: right;">
                <button onclick="closeModal()" style="
                    background: none;
                    border: none;
                    font-size: 24px;
                    cursor: pointer;
                    color: #333;
                ">&times;</button>
            </div>
            <img id="modal-image" style="
                width: 100%;
                height: auto;
                border-radius: 12px;
                margin-bottom: 15px;
            " />
            <h2 id="modal-name" style="margin-bottom: 10px; font-size: 22px; color: #333;"></h2>
            <p id="modal-description" style="margin-bottom: 10px; color: #555; font-size: 16px;"></p>
            <p id="modal-price" style="margin-bottom: 20px; font-size: 18px; font-weight: bold; color: #222;"></p>
            <div style="display: flex; justify-content: space-between; align-items: center;">
                <label for="quantity" style="font-weight: bold;">Quantity:</label>
                <input type="number" id="quantity" value="1" min="1" style="
                    width: 60px;
                    padding: 5px;
                    border: 1px solid #ccc;
                    border-radius: 5px;
                " />
                <button style="
                    background-color: #28a745;
                    color: white;
                    border: none;
                    padding: 10px 20px;
                    font-size: 16px;
                    border-radius: 8px;
                    cursor: pointer;
                " onclick="addToCart()">Add</button>
            </div>
        </div>
        <script>
            let cart = [];
            function openModal(event, name, image, description, price) {
                const modal = document.getElementById('modal');
                modal.style.display = 'block';

                // Get the clicked button's position
                const rect = event.target.getBoundingClientRect();
                
                // Set the popup position based on the clicked element
                modal.style.top = `${rect.top + window.scrollY + rect.height + 10}px`;  // 10px below the button
                modal.style.left = `${rect.left + window.scrollX}px`;

                document.getElementById('modal-image').src = image;
                document.getElementById('modal-name').innerText = name;
                document.getElementById('modal-description').innerText = description;
                document.getElementById('modal-price').innerText = `$${price}`;
            }
            function closeModal() {
                const modal = document.getElementById('modal');
                modal.style.display = 'none';
            }
            function addToCart() {
                const name = document.getElementById('modal-name').innerText;
                const price = document.getElementById('modal-price').innerText;
                const description = document.getElementById('modal-description').innerText;
                const quantity = parseInt(document.getElementById('quantity').value) || 1;
                const cartItem = { name, description, price, quantity };
                cart.push(cartItem);
                alert(`${name} added to cart!`);
                closeModal();
            }
        </script>
        """)

        # Interactivity
        selected_preference.change(filter_menu, inputs=[selected_preference], outputs=[menu_output])

        # Add the cart output
        gr.Row([selected_preference])
        gr.Row(menu_output)
        gr.Row(cart_output)
        gr.Row(modal_window)

    return demo

if __name__ == "__main__":
    demo = app()
    demo.launch()