From 745b6d22a9abccadb6fe32f24767040b1f84d86d Mon Sep 17 00:00:00 2001
From: Daniel Hafner <dani@danionnet.ch>
Date: Thu, 4 Feb 2021 21:26:26 +0100
Subject: [PATCH] SmtpSender added

---
 Massmailer.Shared/Class1.cs                |  8 ----
 Massmailer.Shared/IMailer.cs               | 13 +++++++
 Massmailer.Shared/Logic/Mailer.cs          | 44 ++++++++++++++++++++++
 Massmailer.Shared/Massmailer.Shared.csproj |  6 ++-
 Massmailer.Shared/Model/SmtpSettings.cs    | 25 ++++++++++++
 Massmailer.UI/Massmailer.UI.csproj         |  2 +-
 6 files changed, 88 insertions(+), 10 deletions(-)
 delete mode 100644 Massmailer.Shared/Class1.cs
 create mode 100644 Massmailer.Shared/IMailer.cs
 create mode 100644 Massmailer.Shared/Logic/Mailer.cs
 create mode 100644 Massmailer.Shared/Model/SmtpSettings.cs

diff --git a/Massmailer.Shared/Class1.cs b/Massmailer.Shared/Class1.cs
deleted file mode 100644
index 5f84109..0000000
--- a/Massmailer.Shared/Class1.cs
+++ /dev/null
@@ -1,8 +0,0 @@
-using System;
-
-namespace Massmailer.Shared
-{
-    public class Class1
-    {
-    }
-}
diff --git a/Massmailer.Shared/IMailer.cs b/Massmailer.Shared/IMailer.cs
new file mode 100644
index 0000000..47fdc9f
--- /dev/null
+++ b/Massmailer.Shared/IMailer.cs
@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Massmailer.Shared
+{
+    public interface IMailer
+    {
+        Task SendMailAsync(string email, string subject, string body);
+    }
+}
diff --git a/Massmailer.Shared/Logic/Mailer.cs b/Massmailer.Shared/Logic/Mailer.cs
new file mode 100644
index 0000000..f7ec320
--- /dev/null
+++ b/Massmailer.Shared/Logic/Mailer.cs
@@ -0,0 +1,44 @@
+using MailKit.Net.Smtp;
+using Massmailer.Shared.Model;
+using MimeKit;
+using System;
+using System.Threading.Tasks;
+
+namespace Massmailer.Shared.Logic
+{
+    public class Mailer : IMailer
+    {
+        private readonly SmtpSettings smtpSettings;
+
+        public Mailer(SmtpSettings smtpSettings)
+        {
+            this.smtpSettings = smtpSettings;
+        }
+
+        public async Task SendMailAsync(string email, string subject, string body)
+        {
+            try
+            {
+                var message = new MimeMessage();
+                message.From.Add(new MailboxAddress(this.smtpSettings.SenderName, this.smtpSettings.SenderEmail));
+                message.To.Add(new MailboxAddress(email, email));
+                message.Subject = subject;
+                message.Body = new TextPart("html") { Text = body };
+
+                using (var client = new SmtpClient())
+                {
+                    client.ServerCertificateValidationCallback = (s, c, h, e) => true;
+
+                    await client.ConnectAsync(this.smtpSettings.Server, this.smtpSettings.Port, this.smtpSettings.UseSsl);
+                    await client.AuthenticateAsync(this.smtpSettings.Username, this.smtpSettings.Password);
+                    await client.SendAsync(message);
+                    await client.DisconnectAsync(true);
+                }
+            }
+            catch (Exception ex)
+            {
+                throw new InvalidOperationException(ex.Message);
+            }
+        }
+    }
+}
diff --git a/Massmailer.Shared/Massmailer.Shared.csproj b/Massmailer.Shared/Massmailer.Shared.csproj
index f208d30..0165452 100644
--- a/Massmailer.Shared/Massmailer.Shared.csproj
+++ b/Massmailer.Shared/Massmailer.Shared.csproj
@@ -1,7 +1,11 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>net5.0</TargetFramework>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="MailKit" Version="2.10.1" />
+  </ItemGroup>
+
 </Project>
diff --git a/Massmailer.Shared/Model/SmtpSettings.cs b/Massmailer.Shared/Model/SmtpSettings.cs
new file mode 100644
index 0000000..715bbd3
--- /dev/null
+++ b/Massmailer.Shared/Model/SmtpSettings.cs
@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Massmailer.Shared.Model
+{
+    public class SmtpSettings
+    {
+        public string Server { get; set; }
+
+        public int Port { get; set; }
+
+        public string SenderName { get; set; }
+
+        public string SenderEmail { get; set; }
+
+        public string Username { get; set; }
+
+        public string Password { get; set; }
+
+        public bool UseSsl { get; set; }
+    }
+}
diff --git a/Massmailer.UI/Massmailer.UI.csproj b/Massmailer.UI/Massmailer.UI.csproj
index a58967a..07b623a 100644
--- a/Massmailer.UI/Massmailer.UI.csproj
+++ b/Massmailer.UI/Massmailer.UI.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <OutputType>WinExe</OutputType>