using System;

using System.IO;

​

namespace OrderProject

{

    public class Program

    {

        public static void Main()

        {

            var path = @"C:\Hamed_Assignment3";

            var filename = @"C:\Hamed_Assignment3\Assignment3.txt";

​

            decimal sumc1;

            decimal sumc2;

            var cust = Customerses(out sumc1, out sumc2);

​

            decimal payPalTotal = 0;

            decimal masterCardTotal = 0;

            decimal visaTotal = 0;

​

            foreach (var customer in cust)

            {

                if (customer == null) continue;

​

                Console.WriteLine("Customer:\n");

                Console.WriteLine("{0, 15} {1, 17}", "First Name", "Last Name");

                Console.WriteLine("{0, 10} {1, 20}", customer.FirstName, customer.LastName);

                Console.WriteLine("-----------------------------------------------");

                Console.WriteLine("Orders:\n");

​

                foreach (var order in customer.Order)

                {

                    visaTotal = Total(order, visaTotal, ref masterCardTotal, ref payPalTotal);

                }

                Console.WriteLine("==========================================");

            }

            Console.WriteLine("Total sales:      {0:C}\n", masterCardTotal + visaTotal + payPalTotal);

            Console.WriteLine("MasterCard Total: {0:C}", masterCardTotal);

            Console.WriteLine("Visa Total:       {0:C}", visaTotal);

            Console.WriteLine("PayPal Total:     {0:C}", payPalTotal);

            //------------------------------------------------

            IPayment payPal = new PayPal();

            IPayment visa = new Visa();

            IPayment masterCard = new MasterCard();

            Console.WriteLine("-----------------------------------------");

​

            var di = new DirectoryInfo(path);

            if (di.Exists)

            {

                Console.WriteLine("The directory   *{0}*   already exists.", path);

            }

            else

            {

                di.Create();

                Console.WriteLine("The directory was created in   *{0}*   successfully.", path);

            }

​

            using (var file = new StreamWriter(filename, true))

            {

                var myfile1 = "Name:" + cust[0].FirstName + cust[0].LastName + "    " + "Total: $" + sumc1;

                var myfile2 = "Name:" + cust[1].FirstName + cust[1].LastName + "    " + "Total: $" + sumc2;

​

                file.WriteLine(myfile1);

                file.WriteLine(myfile2);

            }

            Console.ReadLine();

        }

​

        private static decimal Total(Orders order, decimal visaTotal, ref decimal masterCardTotal,

            ref decimal payPalTotal)

        {

            if (order == null) return visaTotal;

​

            Console.WriteLine("{0, 10} {1, 10} {2, 10}", order.Description, order.Price, order.Quantity);

​

            if (order.Payment is Visa)

            {

                visaTotal += order.Price;

            }

            else if (order.Payment is MasterCard)

            {

                masterCardTotal += order.Price;

            }

            else if (order.Payment is PayPal)

            {

                payPalTotal += order.Price;

            }

            return visaTotal;

        }

​

        private static Customers[] Customerses(out decimal sumc1, out decimal sumc2)

        {

            var cust = new Customers[3];

​

            cust[0] = new Customers {FirstName = "Joe", LastName = "Smith", Order = new Orders[3]};

            cust[0].Order[0] = new Orders

            {

                Description = "Shoes",

                Price = 19.99M,

                Quantity = 1,

                Payment = new MasterCard()

            };

            cust[0].Order[1] = new Orders {Description = "Pants", Price = 29.99M, Quantity = 2, Payment = new Visa()};

            sumc1 = (cust[0].Order[0].Quantity*cust[0].Order[0].Price) +

                    (cust[0].Order[1].Quantity*cust[0].Order[1].Price);

​

            cust[1] = new Customers {FirstName = "Sally", LastName = "Jones", Order = new Orders[3]};

            cust[1].Order[0] = new Orders {Description = "Shoes", Price = 39.99M, Quantity = 1, Payment = new Visa()};

            cust[1].Order[1] = new Orders {Description = "Pants", Price = 49.99M, Quantity = 1, Payment = new PayPal()};

            sumc2 = (cust[1].Order[0].Quantity*cust[1].Order[0].Price) +

                    (cust[1].Order[1].Quantity*cust[1].Order[1].Price);

            return cust;

        }

    }

​

//Console.ReadLine();

    internal class Customers

    {

        public string FirstName;

        public string LastName;

        public Orders[] Order;

    }

​

    internal class Orders

    {

        public string Description;

        public decimal Price;

        public int Quantity;

        public IPayment Payment { get; set; }

    }

​

//--------------------------------------------------

    internal interface IPayment

    {

    }

​

    internal class PayPal : IPayment

    {

    }

​

    internal class Visa : IPayment

    {

    }

​

    internal class MasterCard : IPayment

    {

    }

}