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Sending mails works

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This commit is contained in:
Daniel Hafner
2021-02-04 22:18:03 +01:00
parent 745b6d22a9
commit e5098c02d9
12 changed files with 207 additions and 51 deletions
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17
Massmailer.Shared/Events/MailSentEvent.cs Normal file
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@@ -0,0 +1,17 @@
using System;
namespace Massmailer.Shared.Events
{
public class MailSentEvent
{
public MailSentEvent(string recipient, DateTime timestamp)
{
this.Recipient = recipient;
this.Timestamp = timestamp;
}
public string Recipient { get; private set; }
public DateTime Timestamp { get; private set; }
}
}

6
Massmailer.Shared/IMailer.cs
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@@ -1,8 +1,4 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Threading.Tasks;
namespace Massmailer.Shared
{

97
Massmailer.Shared/Logic/Mailer.cs
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@@ -1,7 +1,11 @@
using MailKit.Net.Smtp;
using Massmailer.Shared.Events;
using Massmailer.Shared.Model;
using MimeKit;
using PubSub;
using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
namespace Massmailer.Shared.Logic
@@ -9,36 +13,99 @@ namespace Massmailer.Shared.Logic
public class Mailer : IMailer
{
private readonly SmtpSettings smtpSettings;
private readonly SmtpClient smtpClient;
private readonly Hub hub;
private readonly int minWaitTime = 0;
private DateTime lastMailSent = DateTime.MinValue;
public Mailer(SmtpSettings smtpSettings)
public Mailer(SmtpSettings smtpSettings, Hub hub)
{
this.smtpSettings = smtpSettings;
this.smtpClient = new SmtpClient();
this.smtpClient.ServerCertificateValidationCallback = (s, c, h, e) => true;
this.hub = hub;
// Calculate wait time in seconds
this.minWaitTime = (int)Math.Ceiling(60d / this.smtpSettings.MaxSendRate);
}
public async Task SendMailAsync(string email, string subject, string body)
public MimeMessage CreateMessage(string recipient, string subject, string body)
{
var message = new MimeMessage();
message.From.Add(new MailboxAddress(this.smtpSettings.SenderName, this.smtpSettings.SenderEmail));
message.To.Add(new MailboxAddress(recipient, recipient));
message.Subject = subject;
message.Body = new TextPart("html") { Text = body };
return message;
}
public List<MimeMessage> CreateMessages(List<string> recipients, string subject, string body)
{
var result = new List<MimeMessage>();
foreach (var recipient in recipients)
{
result.Add(this.CreateMessage(recipient, subject, body));
}
return result;
}
public async Task SendMailsAsync(List<string> recipients, string subject, string body)
{
var messages = this.CreateMessages(recipients, subject, body);
await this.SendMailsAsync(messages);
}
public async Task SendMailsAsync(List<MimeMessage> messages)
{
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 };
await this.smtpClient.ConnectAsync(this.smtpSettings.Server, this.smtpSettings.Port, this.smtpSettings.UseSsl);
await this.smtpClient.AuthenticateAsync(this.smtpSettings.Username, this.smtpSettings.Password);
using (var client = new SmtpClient())
foreach (var message in messages)
{
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);
await this.CheckForWaitTime();
await this.smtpClient.SendAsync(message);
this.lastMailSent = DateTime.Now;
this.hub.Publish<MailSentEvent>(new MailSentEvent(message.To[0].ToString(), this.lastMailSent));
}
await this.smtpClient.DisconnectAsync(true);
}
catch (Exception ex)
{
throw new InvalidOperationException(ex.Message);
throw new InvalidOperationException("Something went wrong while sending many mails", ex);
}
}
public async Task SendMailAsync(string recipient, string subject, string body)
{
try
{
var message = this.CreateMessage(recipient, subject, body);
await this.SendMailsAsync(new List<MimeMessage> { message });
}
catch (Exception ex)
{
throw new InvalidOperationException("Something went wrong while sending a mail", ex);
}
}
private async Task CheckForWaitTime()
{
await Task.Run(() =>
{
while (true)
{
if (this.lastMailSent.AddSeconds(this.minWaitTime) < DateTime.Now)
{
break;
}
Thread.Sleep(100);
}
});
}
}
}

1
Massmailer.Shared/Massmailer.Shared.csproj
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@@ -6,6 +6,7 @@
<ItemGroup>
<PackageReference Include="MailKit" Version="2.10.1" />
<PackageReference Include="PubSub" Version="4.0.1" />
</ItemGroup>
</Project>

13
Massmailer.Shared/Model/MassmailProject.cs Normal file
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@@ -0,0 +1,13 @@
using System.Collections.Generic;
namespace Massmailer.Shared.Model
{
public class MassmailProject
{
public List<MassmailRecipient> Recipient { get; set; }
public string Subject { get; set; }
public string Body { get; set; }
}
}

13
Massmailer.Shared/Model/MassmailRecipient.cs Normal file
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@@ -0,0 +1,13 @@
using System;
namespace Massmailer.Shared.Model
{
public class MassmailRecipient
{
public string Recipient { get; set; }
public bool IsSent { get; set; }
public DateTime SentDate { get; set; }
}
}

2
Massmailer.Shared/Model/SmtpSettings.cs
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@@ -21,5 +21,7 @@ namespace Massmailer.Shared.Model
public string Password { get; set; }
public bool UseSsl { get; set; }
public int MaxSendRate { get; set; }
}
}

2
Massmailer.UI/App.xaml
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@@ -2,7 +2,7 @@
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:Massmailer.UI"
StartupUri="MainWindow.xaml">
StartupUri="Views\MainView.xaml">
<Application.Resources>
</Application.Resources>

28
Massmailer.UI/MainWindow.xaml.cs
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@@ -1,28 +0,0 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace Massmailer.UI
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
}
}

4
Massmailer.UI/Massmailer.UI.csproj
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@@ -6,6 +6,10 @@
<UseWPF>true</UseWPF>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="PubSub" Version="4.0.1" />
</ItemGroup>
<ItemGroup>
<ProjectReference Include="..\Massmailer.Shared\Massmailer.Shared.csproj" />
</ItemGroup>

4
Massmailer.UI/MainWindow.xaml → Massmailer.UI/Views/MainView.xaml
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@@ -1,4 +1,4 @@
<Window x:Class="Massmailer.UI.MainWindow"
<Window x:Class="Massmailer.UI.MainView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
@@ -7,6 +7,6 @@
mc:Ignorable="d"
Title="MainWindow" Height="450" Width="800">
<Grid>
<Button x:Name="BtnSend" Click="Button_Click" Content="Send"/>
</Grid>
</Window>

71
Massmailer.UI/Views/MainView.xaml.cs Normal file
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@@ -0,0 +1,71 @@
using Massmailer.Shared.Events;
using Massmailer.Shared.Logic;
using Massmailer.Shared.Model;
using PubSub;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace Massmailer.UI
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainView : Window
{
private readonly Hub hub = new Hub();
public MainView()
{
this.InitializeComponent();
this.hub.Subscribe<MailSentEvent>(this.MailSentEventHandler);
}
private async void Button_Click(object sender, RoutedEventArgs e)
{
var smtpSettings = new SmtpSettings
{
Server = "localhost",
Port = 25,
Username = "test@test.local",
Password = "asdf33asdf",
UseSsl = false,
SenderEmail = "test@test.local",
SenderName = "Massmailer Test",
MaxSendRate = 60
};
var mailer = new Mailer(smtpSettings, this.hub);
var recipients = new List<string>
{
"1@test.local",
"2@test.local",
"3@test.local",
"4@test.local",
"5@test.local",
"6@test.local",
"7@test.local",
"8@test.local",
"9@test.local",
"10@test.local"
};
await mailer.SendMailsAsync(recipients, "Hello World Subject", "Hello World Body");
}
private void MailSentEventHandler(MailSentEvent mailSentEvent)
{
this.BtnSend.Content = $"mail sent: {mailSentEvent.Recipient} at {mailSentEvent.Timestamp}";
}
}
}