# Import tkinter for GUI and ttk for improved widgets
import tkinter as tk
from tkinter import ttk, messagebox


# Define the RestaurantManagementApp class
class RestaurantOrderManagement:
    # Initialize the application
    def __init__(self, root):
        self.root = root  # The main window of the app
        self.root.title("Restaurant Management App")  # Set the title of the window

        # A dictionary to store the menu items and their prices
        self.menu_items = {
            "FRIES MEAL": 2,
            "LUNCH MEAL": 2,
            "BURGER MEAL": 3,
            "PIZZA MEAL": 4,
            "CHEESE BURGER": 2.5,
            "DRINKS": 1
        }

        self.exchange_rate = 82  # Exchange rate for currency conversion

        self.setup_background(root)  # Set up the background image

        # Create a frame to hold the widgets
        frame = ttk.Frame(root)
        frame.place(relx=0.5, rely=0.5, anchor=tk.CENTER)  # Place it at the center of the window

        # Heading label
        ttk.Label(frame,
                  text="Restaurant Order Management",
                  font=("Arial", 20, "bold")).grid(row=0,
                                                   columnspan=3,
                                                   padx=10,
                                                   pady=10)

        self.menu_labels = {}  # To store references to menu item labels
        self.menu_quantities = {}  # To store references to quantity entry widgets

        # Create labels and entry widgets for each menu item
        for i, (item, price) in enumerate(self.menu_items.items(), start=1):
            label = ttk.Label(frame,
                              text=f"{item} (${price}):",
                              font=("Arial", 12))
            label.grid(row=i, column=0, padx=10, pady=5)
            self.menu_labels[item] = label

            quantity_entry = ttk.Entry(frame, width=5)
            quantity_entry.grid(row=i, column=1, padx=10, pady=5)
            self.menu_quantities[item] = quantity_entry

        # Currency selection
        self.currency_var = tk.StringVar()
        ttk.Label(frame, text="Currency:", font=("Arial", 12)).grid(row=len(self.menu_items) + 1,
                                                                    column=0,
                                                                    padx=10,
                                                                    pady=5)

        # Dropdown for currency selection
        currency_dropdown = ttk.Combobox(frame,
                                         textvariable=self.currency_var,
                                         state="readonly",
                                         width=18,
                                         values=('USD', 'INR'))
        currency_dropdown.grid(row=len(self.menu_items) + 1, column=1, padx=10, pady=5)
        currency_dropdown.current(0)  # Set default currency
        # Update prices when currency changes
        self.currency_var.trace('w', self.update_menu_prices)

        # Button to place the order
        order_button = ttk.Button(frame, text="Place Order", command=self.place_order)
        order_button.grid(row=len(self.menu_items) + 2, columnspan=3, padx=10, pady=10)

    # Method to set up the background image
    def setup_background(self, root):
        bg_width, bg_height = 800, 600
        canvas = tk.Canvas(root, width=bg_width, height=bg_height)
        canvas.pack()
        try:
            original_image = tk.PhotoImage(file="background.png")
            background_image = original_image.subsample(
                max(1, original_image.width() // bg_width),
                max(1, original_image.height() // bg_height))
            canvas.create_image(0, 0, anchor=tk.NW, image=background_image)
            canvas.image = background_image
        except tk.TclError:
            canvas.create_text(bg_width // 2, bg_height // 2, text="Background Image Not Found",
                               font=("Arial", 20), fill="gray")

    # Method to update the menu prices based on the selected currency
    def update_menu_prices(self, *args):
        currency = self.currency_var.get()
        symbol = "₹" if currency == "INR" else "$"
        rate = self.exchange_rate if currency == "INR" else 1
        for item, label in self.menu_labels.items():
            price = self.menu_items[item] * rate
            label.config(text=f"{item} ({symbol}{price}):")

    # Method to place an order
    def place_order(self):
        total_cost = 0
        order_summary = "Order Summary:\n"
        currency = self.currency_var.get()
        symbol = "₹" if currency == "INR" else "$"
        rate = self.exchange_rate if currency == "INR" else 1
        for item, entry in self.menu_quantities.items():
            quantity = entry.get()
            if quantity.isdigit():
                quantity = int(quantity)
                price = self.menu_items[item] * rate
                cost = quantity * price
                total_cost += cost
                if quantity > 0:
                    order_summary += f"{item}: {quantity} x {symbol}{price} = {symbol}{cost}\n"
        if total_cost > 0:
            order_summary += f"\nTotal Cost: {symbol}{total_cost}"
            messagebox.showinfo("Order Placed", order_summary)  # Show order summary in a message box
        else:
            # Show error if no items are ordered
            messagebox.showerror("Error", "Please order at least one item.")


# Main block to run the app
if __name__ == "__main__":
    root = tk.Tk()
    root.geometry("800x600")  # Set the size of the window
    app = RestaurantOrderManagement(root)
    root.mainloop()  # Start the GUI loop
k()