using System;

​

namespace RecruitmentTask

{

    public class Order // Unnecessary inheritance

    {

        public int id { get; set; } // Poor naming

        public double totalAmount; // Public field, unused property

        public string customerType;

        public bool isPriority;

        public DateTime orderDate;

        public int numberOfItems; // Unused property

        public string currency; // Unused property

​

        // Unnecessary constructor

        public Order()

        {

        }

​

        public void DoStuff(double totalAmount, string customerType, bool isPriority, DateTime orderDate, string x, string y, int z) // Too many parameters, bad naming

        {

            double discount = 0;

            // Check if customer is eligible for a discount

            if (customerType == "Regular" && isPriority && orderDate.DayOfWeek == DayOfWeek.Sunday && totalAmount > 100) // Complicated boolean expression

            {

                discount = 10;

            }

            else if (customerType == "VIP" || (customerType == "Regular" && totalAmount > 200 && !isPriority))

            {

                discount = 15; // Magic number

            }

​

            // Apply discount

            double finalAmount = totalAmount - discount;

            if (finalAmount < 0)

                finalAmount = 0; // Dead code, as discount is never more than totalAmount

​

            Console.WriteLine($"Final amount after discount: {finalAmount}");

​

            // Extra switch case for future use (unnecessary switch)

            switch (customerType)

            {

                case "VIP":

                    Console.WriteLine("VIP customer");

                    break;

                case "Regular":

                    Console.WriteLine("Regular customer");

                    break;

                default:

                    Console.WriteLine("Other customer type");

                    break;

            }

​

            // Duplicated code

            if (x == "Hello")

            {

                Console.WriteLine("Greeting");

            }

            if (x == "Hello")

            {

                Console.WriteLine("Greeting again");

            }

​

            // Unused parameters y and z

        }

​

        public double CalculateDiscount(double orderAmount, string customer, bool priority) // Method not used

        {

            // No implementation

            return 0;

        }

    }

​

    // This class could be unnecessary

    public class SpecialOrder : Order

    {

        public string specialInstructions; // Unused property

​

        public void SpecialOrderMethod()

        {

            // No implementation

        }

    }

​

    class Program

    {

        static void Main(string[] args)

        {

            Order order = new Order();

            order.DoStuff(150.0, "Regular", true, DateTime.Now, "Hello", "Unused", 0);

        }

    }

}