using System;

using System.Linq;

using System.Collections.Generic;

using System.Collections;

​

public class Program

{

    public static void Main()

    {

        var orders = GenerateTestCases(1000);

        var final = orders.AsParallel()

                    .Select(x => new { OrderID = x.OrderID, WindowCount = x.WindowCount, DoorCount = x.DoorCount, GuardDoorCount = x.GuardDoorCount, CommissionAmount = CalculateCommission(x)}).ToList();

​

        final.ForEach(x => Console.WriteLine(x.OrderID.ToString() + " | " + x.WindowCount.ToString() + " | " + x.DoorCount.ToString() + " | " + x.GuardDoorCount.ToString() + " | " + x.CommissionAmount.ToString()));

    }

    public static List<Order> GenerateTestCases(int quantity)

    {

        List<Order> retlist= new List<Order>();

        Random r = new Random();

        for(int i = 0; i < quantity; i++){

            retlist.Add(new Order(r.Next(1000000, 1999999),r.Next(0,5), r.Next(0,5), r.Next(0,5)));

        }

        return retlist;

    }   

    public class Order{

        public int OrderID;

        public int WindowCount;

        public int DoorCount;

        public int GuardDoorCount;

        public Order(int oID, int wC, int dC, int gdC)

        {

            OrderID = oID; WindowCount = wC; DoorCount = dC; GuardDoorCount = gdC;      

        }

    }

    //Unit testing

    public static int DoubleMyNumber(int i)

    {

        return i*3;

    }

    public static int CalculateCommission(Order order)

    {

        int Window = 10;

        int Door = 200;

        int GuardDoor = 300;

        //SQL to update commission in database

        return (order.WindowCount * Window) + (order.DoorCount * Door) + (order.GuardDoorCount * GuardDoor);

    }

    //Integration testing

    public static int UpdateFitterCommissionDatabase(Order order)

    {

        return 1;   

    }

    public static void PrintFunction()

    {       

        //Print some stuff

    }

    public static void UpdatePrintStatus()

    {

        //SQL to update print status    

    }

}