preference.py

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}")

# 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 style="background-color: #28a745; color: white; border: none; padding: 8px 15px; font-size: 14px; border-radius: 5px; cursor: pointer;" onclick="openModal('{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["extras"])
        cart_html += f"<li>{item['name']} (x{item['quantity']}, Spice: {item['spiceLevel']}, Extras: {extras}) - {item['price']}</li>"
    cart_html += "</ul>"
    return cart_html

# Gradio app definition using Blocks
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 (Same as previously defined in your code)
        modal_window = gr.HTML("""<div>Your modal content here</div>""")

        # Bind event for the radio button change to update the menu
        selected_preference.change(
            filter_menu,  # The function to trigger on selection change
            inputs=[selected_preference],  # Inputs: the selected preference from the Radio button
            outputs=[menu_output],  # Outputs: the filtered menu displayed in HTML
        )

        # 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()