app.py

import gradio as gr

# Inventory and cart
Inventory = [
    (1, "Apples", 250),
    (2, "Cherry", 650),
    (3, "Chickoo", 50),
    (4, "Grapes", 90),
    (5, "Mangoes", 150),
]

cart = []

# Helper functions
def get_inventory_dict():
    return {f"{item[1]} - ₹{item[2]}": item for item in Inventory}

def add_to_cart(product):
    item = get_inventory_dict().get(product)
    if item:
        cart.append(item)
        return show_cart(), calculate_total()
    return "Item not found.", calculate_total()

def remove_from_cart(product):
    item = get_inventory_dict().get(product)
    if item in cart:
        cart.remove(item)
        return show_cart(), calculate_total()
    return "Item not in cart.", calculate_total()

def show_cart():
    if not cart:
        return "Cart is empty."
    return "\n".join([f"{item[1]} - ₹{item[2]}" for item in cart])

def calculate_total():
    return f"₹{sum(item[2] for item in cart)}"

# Gradio interface to use to make it work
product_choices = list(get_inventory_dict().keys())

with gr.Blocks() as app:
    gr.Markdown("## 🛒 Shopping Cart App")

    with gr.Row():
        product_dropdown = gr.Dropdown(label="Select Product", choices=product_choices)
    
    with gr.Row():
        add_button = gr.Button("Add to Cart")
        remove_button = gr.Button("Remove from Cart")

    cart_display = gr.Textbox(label="Your Cart", interactive=False, lines=10)
    total_display = gr.Textbox(label="Total Bill", interactive=False)

    add_button.click(fn=add_to_cart, inputs=product_dropdown, outputs=[cart_display, total_display])
    remove_button.click(fn=remove_from_cart, inputs=product_dropdown, outputs=[cart_display, total_display])

app.launch()