SourceCode.py

import csv
import pickle  
import datetime

# File paths
MENU_FILE = 'menu.csv'              # CSV file for menu
ORDER_FILE = 'orders.dat'           # Binary file for storing orders
SALES_FILE = 'sales.csv'               # CSV file for sales
FEEDBACK_FILE='feedback.txt'  # Text file for storing feedbacks

#1.  Pre-storing some menu data into 'menu.csv'

def initialize_menu():
    menu_data = [
        ['1', 'Salad', '100'],
        ['2', 'Smoothie', '150'],
        ['3', 'Grilled Sandwich', '200'],['4','Coffee','120'],['5','Pasta','180'],
        ['6','Pizza','475'],['7','French Fries','180']]
    
    # Writing the menu data to the CSV file
    with open(MENU_FILE, 'w', newline='') as file:
        writer = csv.writer(file)
        writer.writerows(menu_data)

#2. Displaying the menu from 'menu.csv'
def display_menu():
    print("\n\t\t*****--MENU--*****\n")
    with open(MENU_FILE, 'r') as file:
        reader = csv.reader(file)
        for row in reader:
            print("\t--------------------------------------------------------")
            print(f"\t|Code: {row[0]} | Item: {row[1]} | Price: Rs.{row[2]}/- |")
        print("\t-------------------------------------------------------")    
           
            


# Function to get feedback from the customer
def get_feedback():
    ch=input("Could you please provide us with your feedback? (sure/skip): ").lower().strip()
    if ch=="sure":
        feedback = input("\nPlease provide your valuable feedback: ")
        # Save the feedback to a text file
        with open('feedback.txt', 'a') as file:
            file.write(f"Feedback: {feedback}\n")
            print("\nThank you for your time & feedback!\n")
    elif ch=="skip":
        pass
    else:
        print("Please enter valid input")
   
# Modify the place_order function to include feedback after payment
def place_order():
    total_amount = 0
    while True:
        order = []
        display_menu()

        while True:
            item_code = input("Enter Item Code to order( type 'Done' to finish): ").strip()
            if item_code.lower() == 'done':
                print("Thanks for ordering")
                break
            quantity = int(input("Enter Quantity: "))
            item = get_item_from_menu(item_code)

            if item:
                item_name, item_price = item
                order.append([item_name, quantity, int(item_price) * quantity])
                total_amount += int(item_price) * quantity
            else:
                print("Invalid item code. Try again.")

        if order:
            print("\n--- Order Summary ---")
            for item in order:
                print(f"\t\t{item[0]} x {item[1]} = Rs.{item[2]}")
            print(f"\t\tTotal Amount: Rs.{total_amount}")
            confirm = input("Do you want to confirm the order? (yes/no): ").strip().lower()

            if confirm == 'yes' or confirm=="y":
                order_number = save_order(order, total_amount)
                generate_bill(order_number, order, total_amount)
                print(f"\nYour Order Number is: {order_number}")

                payment_mode = input("Select payment mode (cash/card/UPI): ").strip().lower()
                if payment_mode == 'cash':
                    print("Please pay the amount at the counter.")
                elif payment_mode == 'upi':
                    print("Please pay using UPI.{ UPI ID: 1800111000}")
                elif payment_mode == "card":
                    print("Please ask for the swipe machine at the counter to pay")
                else:
                    print("Invalid payment mode selected.")

                get_feedback()  # Get feedback from the customer after payment

                more_orders = input("Do you want to order more? (yes/no): ").strip().lower()
                if more_orders == 'yes':
                    continue
                else:
                    print("Your order will be ready at the counter soon!\nThank you for visiting ONE8 COMMUNE!")
                    break
            else:
                print("Order cancelled. Please re-order.")
        else:
            print("No items ordered.")
            main()

# Function for the manager to view feedbacks
def view_feedback():
    print("\n--- Customer Feedbacks ---\n")
    try:
        with open('feedback.txt', 'r') as file:
            feedbacks = file.read()
            if feedbacks:
                print(feedbacks)
            else:
                print("No feedbacks found.")
    except FileNotFoundError:
        print("No feedback file found.")
    print("\n")    

# Function to clear all feedback from the feedback file
def clear_feedback():
    confirm = input("Are you sure you want to clear all feedbacks? (yes/no): ").strip().lower()
    
    if confirm == 'yes':
        with open('feedback.txt', 'w') as file:
            file.write('')    # Overwrite the file with an empty string to clear its contents
        print("All feedbacks have been cleared.")
    else:
        print("Operation cancelled.")



#4. Getting item details from the menu
def get_item_from_menu(item_code):
    with open(MENU_FILE, 'r') as file:
        reader = csv.reader(file)
        for row in reader:
            if row[0] == item_code:
                return row[1], row[2]      # Return item name and price
    return None      # Return None if item code is invalid

#5. Generating a bill after placing an order
def generate_bill(order_number, order, total_amount):
    print("\n--- BILL ---")
    print(f"Order Number: {order_number}")
    for item in order:
        print(f"{item[0]} x {item[1]} = Rs.{item[2]}/-")
    print(f"Total Amount: Rs.{total_amount}/-")

#6. Saving the order to the binary file
def save_order(order, total_amount):
    order_data = {
        'order_number': get_next_order_number(),
        'date': str(datetime.date.today()),
        'order': order,
        'total_amount': total_amount
    }

    # Write the order to a binary file
    with open(ORDER_FILE, 'ab') as file:
        pickle.dump(order_data, file)

    # Save to sales report as well
    save_sales(order_data)

    return order_data['order_number']      # Return the order number

#7.Getting the next order number
def get_next_order_number():
    try:
        with open(ORDER_FILE, 'rb') as file:
            orders = []
            while True:
                try:
                    orders.append(pickle.load(file))
                except EOFError:
                    break
            if orders:
                return orders[-1]['order_number'] + 1        # Increment last order number
            else:
                return 1        # Start with 1 if no orders exist
    except FileNotFoundError:
        return 1  # Start with 1 if file does not exist

#8. Save order details to sales CSV file for report generation
def save_sales(order_data):
    with open(SALES_FILE, 'a', newline='') as file:
        writer = csv.writer(file)
        for item in order_data['order']:
            writer.writerow([order_data['date'], item[0], item[1], item[2]])

#9. Deleting an order by order number (Manager Functionality)

def delete_order():
    order_number = int(input("Enter Order Number to delete: "))  # Ask for the order number
    orders = []      # List to store all existing orders
    order_found = False      # Flag to check if the order exists
    try:
        # Read orders from the file
        with open(ORDER_FILE, 'rb') as file:
            while True:
                try:
                    orders.append(pickle.load(file))  # Add each order to the list
                except EOFError:
                    break  # Stop when the file ends
    except FileNotFoundError:
        print("No orders found.")  # If there is no file, show a message
        return

    # Create a new list without the order to delete
    new_orders = []
    for order in orders:
        if order['order_number'] == order_number:
            order_found = True     # Mark that we found the order to delete
        else:
            new_orders.append(order)  # Add other orders to the new list

    if order_found:
        # Save the new list back to the file
        with open(ORDER_FILE, 'wb') as file:
            for order in new_orders:
                pickle.dump(order, file)
        print(f"\t\tOrder No. {order_number} deleted.")
    else:
        print("\t\tPlease enter a valid order number.")  # Show if the order doesn't exist
  

#10. Generating a sales report for a given date
def generate_sales_report():
    report_date = input("Enter date (YYYY-MM-DD) for sales report: ")
    print(f"\n\t\t\t--- Sales Report for {report_date} ---\n")
    total_sales = 0
    with open(SALES_FILE, 'r') as file:
        reader = csv.reader(file)
        for row in reader:
            if row[0] == report_date:
                print(f" Item: {row[1]}, Quantity: {row[2]}, Total: Rs.{row[3]}/-")
                total_sales += int(row[3])

    print(f"\n Total Sales for {report_date}:   Rs.{total_sales}/-\n")

#11. Customer login function to place an order
def customer_login():
    print("\n\t\tPlease Order Your Happy Meal From The Menu!!")
    place_order()

#12. Manager login function to perform managerial tasks
def manager_login():
    password = "manager123"   # Predefined manager password
    entered_password = input("Please Enter Login Password: ")

    if entered_password == password:
        print("\n--- MANAGER MENU ---")
        while True:
            print("1. Display Menu")
            print("2. Add Menu Item")
            print("3. Remove Menu Item")
            print("4. Delete Order")
            print("5. Generate Sales Report")
            print("6. View Customer Feedback")
            print("7. Clear Feedback File")
            print("8. Logout")
            choice = input("Enter your choice: ")

            if choice == '1':
                display_menu()    # Display the menu
            elif choice == '2':
                add_menu_item()
            elif choice == '3':
                remove_menu_item()
            elif choice == '4':
                delete_order()
            elif choice == '5':
                generate_sales_report()
            elif choice == '6':
                view_feedback()
            elif choice=='7':
                clear_feedback()
            elif choice=="8":
                 print("\t\t\tLogin window ended")
                 break
            else:
                print("Invalid choice. Try again.")
    else:
        print("Invalid password. Access denied.")

#13. Add a new item to the menu (Manager Functionality)
def add_menu_item():
    item_code = input("Enter Item Code: ")
    item_name = input("Enter Item Name: ")
    item_price = input("Enter Item Price: ")

    with open(MENU_FILE, 'a', newline='') as file:
        writer = csv.writer(file)
        writer.writerow([item_code, item_name, item_price])
    print(f"Item {item_name} added to menu.")

#14. Remove an item from the menu (Manager Functionality)
def remove_menu_item():
    item_code = input("Enter Item Code to remove: ")
    
    menu_items = []
    found = False
    with open(MENU_FILE, 'r') as file:
        reader = csv.reader(file)
        menu_items = [row for row in reader]
        
    # Remove the item with the specified code
    for item in menu_items:
        if item[0] == item_code:
            menu_items.remove(item)
            found = True
            break

    if found:
        # Rewrite the menu file with the updated items
        with open(MENU_FILE, 'w', newline='') as file:
            writer = csv.writer(file)
            writer.writerows(menu_items)
        print(f"Item with code {item_code} removed from the menu.")
    else:
        print("Item code not found.")

        

#15. Main function to start the program
def main():
    initialize_menu()  # Pre-store some menu data for simplicity
    print("\t     || WELCOME TO  ONE8 COMMUNE ||")
    print ("\t\t=====================")
    print("\t\tPress 1 For Customer Login")
    print("\t\tPress 2 For Manager Login")
    print("\t\t=====================")
    choice = input("Enter your choice: ")

    if choice == '1':
        customer_login()
    elif choice == '2':
        manager_login()
    else:
        print("Invalid option. Please re-enter.")
        main()

if __name__ == "__main__":   # This ensures the main() function only runs if the file is executed directly,
                                                                             #not when it's imported into another file.
    main()