9.3.3.2 Implementing the Interface; Listing 9-15 The Contents of the EmailOrderProcessor.cs File

SportsStore/SportsStore.Domain/Abstract/IOrderProcessor.cs

@@ -7,7 +7,7 @@ using System.Threading.Tasks;
 
 namespace SportsStore.Domain.Abstract
 {
-    interface IOrderProcessor
+    public interface IOrderProcessor
     {
         void ProcessOrder(Cart cart, ShippingDetails shippingDetails);
     }

SportsStore/SportsStore.Domain/Concrete/EmailOrderProcessor.cs

@@ -0,0 +1,93 @@
+using SportsStore.Domain.Abstract;
+using SportsStore.Domain.Entities;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net;
+using System.Net.Mail;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SportsStore.Domain.Concrete
+{
+    public class EmailSettings
+    {
+        public string MailToAddress = "orders@example.com";
+        public string MailFromAddress = "sportsstore@example.com";
+        public bool UseSsl = true;
+        public string Username = "MySmtpUsername";
+        public string Password = "MySmtpPassword";
+        public string Servername = "smtp.example.com";
+        public int ServerPort = 587;
+        public bool WriteAsFile = false;
+        public string FileLocation = @"c:\sports_store_emailss";
+    }
+
+    public class EmailOrderProcessor : IOrderProcessor
+    {
+        private EmailSettings emailSettings;
+        public EmailOrderProcessor(EmailSettings settings)
+        {
+            emailSettings = settings;
+        }
+
+        public void ProcessOrder(Cart cart, ShippingDetails shippingInfo)
+        {
+            using (var smtpClient = new SmtpClient())
+            {
+                smtpClient.EnableSsl = emailSettings.UseSsl;
+                smtpClient.Host = emailSettings.Servername;
+                smtpClient.Port = emailSettings.ServerPort;
+                smtpClient.UseDefaultCredentials = false;
+                smtpClient.Credentials = new NetworkCredential(
+                    emailSettings.Username,
+                    emailSettings.Password);
+
+                if (emailSettings.WriteAsFile)
+                {
+                    smtpClient.DeliveryMethod = SmtpDeliveryMethod.SpecifiedPickupDirectory;
+                    smtpClient.PickupDirectoryLocation = emailSettings.FileLocation;
+                    smtpClient.EnableSsl = false;
+                }
+                StringBuilder body = new StringBuilder()
+                    .AppendLine("A new order has been submitted")
+                    .AppendLine("---")
+                    .AppendLine("Items:");
+
+                foreach (var line in cart.Lines)
+                {
+                    var subtotal = line.Product.Price * line.Quantity;
+                    body.AppendFormat("{0} x {1} (subtotal: {2:c}", line.Quantity, line.Product.Name, subtotal);
+                }
+
+                body.AppendFormat("Total order value: {0:c}", cart.ComputeTotalValue())
+                    .AppendLine("---")
+                    .AppendLine("Ship to:")
+                    .AppendLine(shippingInfo.Name)
+                    .AppendLine(shippingInfo.Line1)
+                    .AppendLine(shippingInfo.Line2 ?? "")
+                    .AppendLine(shippingInfo.Line3 ?? "")
+                    .AppendLine(shippingInfo.City)
+                    .AppendLine(shippingInfo.State ?? "")
+                    .AppendLine(shippingInfo.Country)
+                    .AppendLine(shippingInfo.Zip)
+                    .AppendLine("---")
+                    .AppendFormat("Gift wrap: {0}", shippingInfo.GiftWrap ? "Yes" : "No");
+
+                MailMessage mailMessage = new MailMessage(
+                    emailSettings.MailFromAddress,   // From
+                                                       emailSettings.MailToAddress,     // To
+                                                      "New order submitted!",          // Subject
+                                                       body.ToString());                // Body
+
+                if (emailSettings.WriteAsFile)
+                {
+                    mailMessage.BodyEncoding = Encoding.ASCII;
+                }
+
+                smtpClient.Send(mailMessage);
+            }
+
+        }
+    }
+}

SportsStore/SportsStore.Domain/SportsStore.Domain.csproj

@@ -76,6 +76,7 @@
     <Compile Include="Abstract\IProductRepository.cs" />
     <Compile Include="Concrete\EFDbContext.cs" />
     <Compile Include="Concrete\EFProductRepository.cs" />
+    <Compile Include="Concrete\EmailOrderProcessor.cs" />
     <Compile Include="Entities\Cart.cs" />
     <Compile Include="Entities\Product.cs" />
     <Compile Include="Entities\ShippingDetails.cs" />