mailer handler

Correo.sln

@@ -24,6 +24,10 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Correo.PublishedLanguage",
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Correo.Domain", "src\Correo.Domain\Correo.Domain.csproj", "{A2D2694C-AB68-49B0-B4B0-94BBFF48C043}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Correo.SmtpClient", "src\Correo.SmtpClient\Correo.SmtpClient.csproj", "{76793477-8219-4FFB-AA08-3F2224EC4968}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Correo.Abstractions", "src\Correo.Abstractions\Correo.Abstractions.csproj", "{ED8048DC-8509-4085-97F0-F9D9A59A689A}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -46,6 +50,14 @@ Global
 		{A2D2694C-AB68-49B0-B4B0-94BBFF48C043}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{A2D2694C-AB68-49B0-B4B0-94BBFF48C043}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{A2D2694C-AB68-49B0-B4B0-94BBFF48C043}.Release|Any CPU.Build.0 = Release|Any CPU
+		{76793477-8219-4FFB-AA08-3F2224EC4968}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{76793477-8219-4FFB-AA08-3F2224EC4968}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{76793477-8219-4FFB-AA08-3F2224EC4968}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{76793477-8219-4FFB-AA08-3F2224EC4968}.Release|Any CPU.Build.0 = Release|Any CPU
+		{ED8048DC-8509-4085-97F0-F9D9A59A689A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{ED8048DC-8509-4085-97F0-F9D9A59A689A}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{ED8048DC-8509-4085-97F0-F9D9A59A689A}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{ED8048DC-8509-4085-97F0-F9D9A59A689A}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -55,6 +67,8 @@ Global
 		{3AEA1AB4-F068-4C39-A173-AD65F3F8E2F2} = {245E2FBE-DFDF-40B4-94B7-5DDA216E58AD}
 		{DA47BCEE-9AE7-4F20-A04F-5866966503C5} = {245E2FBE-DFDF-40B4-94B7-5DDA216E58AD}
 		{A2D2694C-AB68-49B0-B4B0-94BBFF48C043} = {245E2FBE-DFDF-40B4-94B7-5DDA216E58AD}
+		{76793477-8219-4FFB-AA08-3F2224EC4968} = {245E2FBE-DFDF-40B4-94B7-5DDA216E58AD}
+		{ED8048DC-8509-4085-97F0-F9D9A59A689A} = {245E2FBE-DFDF-40B4-94B7-5DDA216E58AD}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {86FCF989-26FC-41E9-8A23-9485606D619D}

src/Correo.Abstractions/Correo.Abstractions.csproj

@@ -0,0 +1,7 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+  </PropertyGroup>
+
+</Project>

src/Correo.Abstractions/EmailMessage.cs

@@ -1,6 +1,6 @@
 using System.Collections.Generic;
 
-namespace Correo.Domain.Models
+namespace Correo.Abstractions
 {
     public record EmailMessage
     {

src/Correo.Abstractions/IMailer.cs

@@ -0,0 +1,11 @@
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Correo.Abstractions
+{
+    public interface IMailer
+    {
+        void SendEmail(EmailMessage message);
+        Task SendEmailAsync(EmailMessage message, CancellationToken token = default);
+    }
+}

src/Correo.Application/CommandHandlers/SendEmailHandler.cs

@@ -1,4 +1,5 @@
 using AutoMapper;
+using Correo.Abstractions;
 using Correo.Application.Extensions;
 using Correo.Domain.Models;
 using Correo.PublishedLanguage.Commands;
@@ -16,16 +17,18 @@ namespace Correo.Application.CommandHandlers
     public class SendEmailHandler : IRequestHandler<SendEmail>
     {
         private readonly IMessageBusPublisher _messageBusPublisher;
+        private readonly IOptions<DefaultSender> _defaultSender;
         private readonly ILogger<SendEmailHandler> _logger;
         private readonly IMapper _mapper;
-        private readonly IOptions<DefaultSender> _defaultSender;
+        private readonly IMailer _mailer;
 
-        public SendEmailHandler(IMessageBusPublisher messageBusPublisher, ILogger<SendEmailHandler> logger, IMapper mapper, IOptions<DefaultSender> defaultSender)
+        public SendEmailHandler(IMessageBusPublisher messageBusPublisher, IOptions<DefaultSender> defaultSender, ILogger<SendEmailHandler> logger, IMapper mapper, IMailer mailer)
         {
             _messageBusPublisher=messageBusPublisher;
+            _defaultSender=defaultSender;
             _logger=logger;
             _mapper=mapper;
-            _defaultSender=defaultSender;
+            _mailer=mailer;
         }
 
         public async Task<Unit> Handle(SendEmail command, CancellationToken cancellationToken)
@@ -33,15 +36,14 @@ namespace Correo.Application.CommandHandlers
             try
             {
                 var emailMessage = _mapper.Map<EmailMessage>(command);
-                if (emailMessage.From == null)
-                    emailMessage.From = new EmailMessage.MailAddress(_defaultSender.Value.Address, _defaultSender.Value.Name);
-
+                emailMessage.Enrich(_defaultSender.Value);
                 emailMessage.Validate();
-
-                // send email
+                await _mailer.SendEmailAsync(emailMessage, cancellationToken);
+                await _messageBusPublisher.PublishAsync(new EmailSent(command.Subject), cancellationToken);
             }
             catch (Exception ex)
             {
+                _logger.LogError(ex, ex.Message);
                 await _messageBusPublisher.PublishAsync(new EmailSentFailed(command.Subject, ex.Message), cancellationToken);
                 throw;
             }

src/Correo.Application/CommandHandlers/SendEmailHandlerSync.cs

@@ -0,0 +1,37 @@
+using Correo.Abstractions;
+using Correo.Application.Extensions;
+using Correo.Domain.Models;
+using MediatR;
+using Microsoft.Extensions.Options;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Correo.Application.CommandHandlers
+{
+    public class SendEmailHandlerSync
+    {
+        public record Command : EmailMessage, IRequest<Unit>
+        {
+        }
+
+        public class CommandHandler : IRequestHandler<Command, Unit>
+        {
+            private readonly IOptions<DefaultSender> _defaultSender;
+            private readonly IMailer _mailer;
+
+            public CommandHandler(IOptions<DefaultSender> defaultSender, IMailer mailer)
+            {
+                _defaultSender=defaultSender;
+                _mailer=mailer;
+            }
+
+            public async Task<Unit> Handle(Command command, CancellationToken cancellationToken)
+            {
+                command.Enrich(_defaultSender.Value);
+                command.Validate();
+                await _mailer.SendEmailAsync(command, cancellationToken);
+                return Unit.Value;
+            }
+        }
+    }
+}

src/Correo.Application/Correo.Application.csproj

@@ -11,8 +11,10 @@
   </ItemGroup>
 
   <ItemGroup>
+    <ProjectReference Include="..\Correo.Abstractions\Correo.Abstractions.csproj" />
     <ProjectReference Include="..\Correo.Domain\Correo.Domain.csproj" />
     <ProjectReference Include="..\Correo.PublishedLanguage\Correo.PublishedLanguage.csproj" />
+    <ProjectReference Include="..\Correo.SmtpClient\Correo.SmtpClient.csproj" />
   </ItemGroup>
 
 </Project>

src/Correo.Application/DependencyInjectionExtensions.cs

@@ -1,4 +1,5 @@
 using Correo.Domain.Models;
+using Correo.SmtpClient;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 
@@ -9,6 +10,7 @@ namespace Correo.Application
         public static void AddApplicationServices(this IServiceCollection services, IConfiguration configuration)
         {
             services.Configure<DefaultSender>(configuration.GetSection("DefaultSender"));
+            services.AddSmtpClientServices(configuration.GetSection("SmtpClient"));
         }
     }
 }

src/Correo.Application/Extensions/ModelExtensions.cs

@@ -0,0 +1,14 @@
+using Correo.Abstractions;
+using Correo.Domain.Models;
+
+namespace Correo.Application.Extensions
+{
+    internal static class ModelExtensions
+    {
+        public static void Enrich(this EmailMessage emailMessage, DefaultSender defaultSender)
+        {
+            if (emailMessage.From == null)
+                emailMessage.From = new EmailMessage.MailAddress(defaultSender.Address, defaultSender.Name);
+        }
+    }
+}

src/Correo.Application/Extensions/ValidationExtensions.cs

@@ -1,5 +1,5 @@
-using Correo.Application.Utils;
-using Correo.Domain.Models;
+using Correo.Abstractions;
+using Correo.Application.Utils;
 using System;
 using System.Linq;
 

src/Correo.Application/Mappings/MappingProfile.cs

@@ -1,5 +1,6 @@
 using AutoMapper;
-using Correo.Domain.Models;
+using Correo.Abstractions;
+using Correo.Application.CommandHandlers;
 using Correo.PublishedLanguage.Commands;
 
 namespace Correo.Application.Mappings
@@ -10,6 +11,7 @@ namespace Correo.Application.Mappings
         {
             CreateMap<SendEmail.MailAddress, EmailMessage.MailAddress>();
             CreateMap<SendEmail, EmailMessage>();
+            CreateMap<SendEmail, SendEmailHandlerSync.Command>();
         }
     }
 }

src/Correo.Application/Queries/GetSystemVersion.cs

@@ -1,5 +1,7 @@
 using MediatR;
 using System;
+using System.IO;
+using System.Reflection;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -25,10 +27,22 @@ namespace Correo.Application.Queries
 
             public async Task<Model> Handle(Query request, CancellationToken cancellationToken)
             {
+                var version = Environment.GetEnvironmentVariable("APP_VERSION");
+                var appDate = Environment.GetEnvironmentVariable("APP_DATE");
+
+                if (string.IsNullOrEmpty(version))
+                    version = Assembly.GetEntryAssembly().GetCustomAttribute<AssemblyInformationalVersionAttribute>().InformationalVersion;
+
+                if (!DateTime.TryParse(appDate, out var lastUpdateDate))
+                {
+                    var location = Assembly.GetExecutingAssembly().Location;
+                    lastUpdateDate = File.GetLastWriteTime(location);
+                }
+
                 var result = new Model()
                 {
-                    Version = "1.0.0",
-                    LastUpdateDate = DateTime.Now
+                    Version = version,
+                    LastUpdateDate = lastUpdateDate
                 };
 
                 return await Task.FromResult(result);

src/Correo.Domain/Models/Settings.cs

@@ -1,4 +1,8 @@
 namespace Correo.Domain.Models
 {
-    public record DefaultSender(string Address, string Name);
+    public record DefaultSender
+    {
+        public string Address { get; init; }
+        public string Name { get; init; }
+    }
 }

src/Correo.SmtpClient/Correo.SmtpClient.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="$(MicrosoftExtensionsPackageVersion)" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="$(MicrosoftExtensionsPackageVersion)" />
+    <PackageReference Include="Microsoft.Extensions.Options.ConfigurationExtensions" Version="$(MicrosoftExtensionsPackageVersion)" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Correo.Abstractions\Correo.Abstractions.csproj" />
+  </ItemGroup>
+
+</Project>

src/Correo.SmtpClient/DependencyInjectionExtensions.cs

@@ -0,0 +1,16 @@
+using Correo.Abstractions;
+using Correo.SmtpClient.Models;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace Correo.SmtpClient
+{
+    public static class DependencyInjectionExtensions
+    {
+        public static void AddSmtpClientServices(this IServiceCollection services, IConfigurationSection configuration)
+        {
+            services.Configure<SmtpClientOptions>(configuration);
+            services.AddTransient<IMailer, SmtpClientMailer>();
+        }
+    }
+}

src/Correo.SmtpClient/Extensions/ModelExtensions.cs

@@ -0,0 +1,39 @@
+using Correo.Abstractions;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net.Mail;
+
+namespace Correo.SmtpClient.Extensions
+{
+    internal static class ModelExtensions
+    {
+        public static string Log(this IEnumerable<EmailMessage.MailAddress> addresses)
+            => addresses != null ? string.Join(',', addresses.Select(z => z.Address)) : string.Empty;
+
+        public static MailAddress ToMailAddress(this EmailMessage.MailAddress address)
+            => new MailAddress(address.Address, address.DisplayName);
+
+        public static void AddRange(this MailAddressCollection collection, IEnumerable<EmailMessage.MailAddress> addresses)
+        {
+            foreach (var item in addresses)
+                collection.Add(item.ToMailAddress());
+        }
+
+        public static MailMessage ToMailMessage(this EmailMessage message)
+        {
+            var mailMessage = new MailMessage
+            {
+                Subject = message.Subject,
+                Body = message.Body,
+                From = message.From.ToMailAddress(),
+                IsBodyHtml = message.IsBodyHtml
+            };
+
+            mailMessage.To.AddRange(message.To);
+            mailMessage.CC.AddRange(message.Cc);
+            mailMessage.Bcc.AddRange(message.Bcc);
+
+            return mailMessage;
+        }
+    }
+}

src/Correo.SmtpClient/Models/SmtpClientOptions.cs

@@ -0,0 +1,19 @@
+namespace Correo.SmtpClient.Models
+{
+    public record SmtpClientOptions
+    {
+        public string Server { get; init; }
+        public int Port { get; init; }
+        public bool UseSsl { get; init; }
+        public bool UseAuthentication { get; init; }
+        public bool TrustServer { get; init; }
+        public AuthenticationOptions Authentication { get; init; }
+
+        public record AuthenticationOptions
+        {
+            public string UserName { get; init; }
+            public string Domain { get; init; }
+            public string Password { get; init; }
+        }
+    }
+}

src/Correo.SmtpClient/SmtpClientMailer.cs

@@ -0,0 +1,64 @@
+using Correo.Abstractions;
+using Correo.SmtpClient.Extensions;
+using Correo.SmtpClient.Models;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
+using System;
+using System.Net;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Correo.SmtpClient
+{
+    public class SmtpClientMailer : IMailer, IDisposable
+    {
+        private readonly IOptions<SmtpClientOptions> _optionsAccessor;
+        private readonly System.Net.Mail.SmtpClient _smtpClient;
+        private readonly ILogger<SmtpClientMailer> _logger;
+
+        public SmtpClientMailer(IOptions<SmtpClientOptions> optionsAccessor, ILogger<SmtpClientMailer> logger)
+        {
+            _optionsAccessor = optionsAccessor;
+            _logger = logger;
+
+            var options = _optionsAccessor.Value;
+
+            _smtpClient = new System.Net.Mail.SmtpClient { Host = options.Server, Port = options.Port, EnableSsl = options.UseSsl };
+            if (options.UseAuthentication)
+            {
+                if (string.IsNullOrEmpty(options.Authentication.Domain))
+                    _smtpClient.Credentials = new NetworkCredential(options.Authentication.UserName, options.Authentication.Password);
+                else
+                    _smtpClient.Credentials = new NetworkCredential(options.Authentication.UserName, options.Authentication.Password, options.Authentication.Domain);
+            }
+            else
+                _smtpClient.UseDefaultCredentials = true;
+
+            if (options.TrustServer)
+                ServicePointManager.ServerCertificateValidationCallback = (sender, certificate, chain, sslPolicyErrors) => true;
+        }
+
+        public void Dispose()
+        {
+            _smtpClient?.Dispose();
+            GC.SuppressFinalize(this);
+        }
+
+        public void SendEmail(EmailMessage message)
+        {
+            var mailMessage = message.ToMailMessage();
+            _smtpClient.Send(mailMessage);
+            Log(message);
+        }
+
+        public async Task SendEmailAsync(EmailMessage message, CancellationToken token = default)
+        {
+            var mailMessage = message.ToMailMessage();
+            await _smtpClient.SendMailAsync(mailMessage, token);
+            Log(message);
+        }
+
+        private void Log(EmailMessage message)
+            => _logger.LogInformation($"Email sent: Subject: {message.Subject}; From: {message.From.Address}; To: {message.To.Log()}; Cc: {message.Cc.Log()}; Bcc: {message.Bcc.Log()};");
+    }
+}

src/Correo/Controllers/MailerController.cs

@@ -0,0 +1,31 @@
+using AutoMapper;
+using Correo.Application.CommandHandlers;
+using Correo.PublishedLanguage.Commands;
+using MediatR;
+using Microsoft.AspNetCore.Mvc;
+using System.Threading.Tasks;
+
+namespace Correo.Controllers
+{
+    [ApiController]
+    [Route("api/mailer")]
+    public class MailerController : ControllerBase
+    {
+        private readonly IMediator _mediator;
+        private readonly IMapper _mapper;
+
+        public MailerController(IMediator mediator, IMapper mapper)
+        {
+            _mediator=mediator;
+            _mapper=mapper;
+        }
+
+        [HttpPost("email")]
+        public async Task<IActionResult> SendEmail([FromBody] SendEmail sendEmail)
+        {
+            var command = _mapper.Map<SendEmailHandlerSync.Command>(sendEmail);
+            var result = await _mediator.Send(command);
+            return Ok(result);
+        }
+    }
+}

src/Correo/Controllers/SystemController.cs

@@ -7,7 +7,7 @@ using System.Threading.Tasks;
 namespace Correo.Controllers
 {
     [ApiController]
-    [Route("[controller]")]
+    [Route("api/system")]
     public class SystemController : ControllerBase
     {
         private readonly IMediator _mediator;

src/Correo/Extensions/StartupExtensions.cs

@@ -1,4 +1,5 @@
-using MediatR;
+using Correo.Application;
+using MediatR;
 using MediatR.Pipeline;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.Extensions.Configuration;
@@ -27,6 +28,9 @@ namespace Correo.Extensions
 
             // Messaging
             services.AddMessaging(configuration);
+
+            // Application services
+            services.AddApplicationServices(configuration);
         }
 
         public static void Configure(this WebApplication app)