ShoppingList_UI2.py

import tkinter as tk

class Item():
    def __init__(self, item_id, name, price, count):
        self.item_id = item_id
        self.name = name
        self.price = price
        self.count = count

    def get_item_info(self):
        return self.item_id, self.name, f'£{self.price:.2f}', self.count

    def add_n(self, n):
        self.count += n

    def remove_n(self, n):
        if self.count >= n:
            self.count -= n
            return True
        else:
            self.count = 0
            return False

# Tkinter window
root = tk.Tk()
root.title("Shopping Cart")

FONTS = [
    "Arial",
    "Times New Roman",
    "Courier New",
    "Verdana",
    "Comic Sans MS",
    "Impact"
]

# Initialize your items
ids_list = ["apl001", "mil001", "ck001"]
prices = [2.45, 1, 8]
names = ["1KGApple", "1LMilk", "1KgCake"]

items_map = {
    ids_list[i]: Item(f"{ids_list[i]}", f"{names[i]}", prices[i], 0) for i in range(len(ids_list))
}

item_count=0

# Listbox to display items and quantities
item_listbox = tk.Listbox(root, selectmode=tk.SINGLE)


# Frame within which buttons will be placed
display_frame = tk.Frame(root, bg="purple")
display_frame.pack(fill="x")

# Buttons and place them in the frame
def item_button_click(item_id, increment=True):
    item = items_map[item_id]
    if increment:
        item.add_n(1)
    else:
        item.remove_n(1)
        
    update_item_listbox()
    update_total()
    
    
    # Check if item_count is over the allowed limit
    if item_count > 15:
        message_label.config(text="Maximum quantity reached (15 items)", fg="red")
    else:
        message_label.config(text="Thank you for shopping with us!", fg="green")

def create_item_buttons():
    for i, item_id in enumerate(items_map):
        item = items_map[item_id]
        item_frame = tk.Frame(display_frame)
        item_frame.grid(row=i, column=0, columnspan=4, padx=10, pady=10, sticky="nsew")
        item_frame.columnconfigure(0, weight=1)
        item_frame.columnconfigure(1, weight=10)
        item_frame.columnconfigure(2, weight=1)
        item_frame.columnconfigure(3, weight=1)

        item_name_label = tk.Label(item_frame, text=f"{item.name} - Quantity: {item.count}")
        item_name_label.grid(row=0, column=0, sticky="w")
        def update_item_quantity_label(item_id):
            item = items_map[item_id]
            item_name_label.config(text=f"{item.name} - Quantity: {item.count}")

        add_button = tk.Button(item_frame, text="+", font=(FONTS[0], 12), command=lambda i=item_id: item_button_click(i, increment=True))
        add_button.grid(row=0, column=1)

        remove_button = tk.Button(item_frame, text="-", font=(FONTS[0], 12), command=lambda i=item_id: item_button_click(i, increment=False))
        remove_button.grid(row=0, column=2)

create_item_buttons()

# Label to display item information
info_label = tk.Label(root, text="Select an item to see details.")
info_label.pack()

# Frame for the message
message_frame = tk.Frame(root)
message_frame.pack()

# Label to show the message in the message frame
message_label = tk.Label(message_frame, text="", fg="red")
message_label.pack()

# Label to display the total cost
# Label to display the total cost
total_cost_label = tk.Label(root, text="Total Cost: £0.00")
total_cost_label.pack()


total_cost_label.config(width=30)  


def update_item_listbox():
    item_listbox.delete(0, tk.END)
    for item_id, item in items_map.items():
        item_listbox.insert(tk.END, f"{item.name} - Quantity: {item.count}")

update_item_listbox()

# Button to remove items from the cart
def remove_item():
    for item_id in items_map:
        items_map[item_id].count = 0
    update_item_listbox()
    update_total()

remove_button = tk.Button(root, text="Remove items", command=remove_item)
remove_button.pack()

# Button to update item information
def update_info():
    selected_index = item_listbox.curselection()
    if selected_index:
        item_id = list(items_map.keys())[selected_index[0]]
        item = items_map[item_id]
        info = f"Item ID: {item.item_id}, Name: {item.name}, Price: {item.price:.2f}, Count: {item.count}"
        info_label.config(text=info)

update_button = tk.Button(root, text="Get Item Info", command=update_info)
update_button.pack()

total_at_limit = 0

# Function to update the total amount
def update_total():
    global item_count, total_at_limit

    item_count = sum(item.count for item in items_map.values())
    
    if item_count > 15:
        message_label.config(text="Maximum quantity reached (15 items)", fg="red")
    else:
        message_label.config(text="")
    
    total_cost = sum(item.price * item.count for item in items_map.values())
    total_at_limit = total_cost if item_count <= 15 else total_at_limit
    total_cost_label.config(text=f"Total Cost: £{total_at_limit:.2f}")



# Button to exit the program
exit_button = tk.Button(root, text="Exit", command=root.destroy)
exit_button.pack()

root.mainloop()