Minimum Viable Mailsender

src/Nyanlabs.SFood.Api/Controllers/ApiController.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc;
+
+namespace Nyanlabs.SFood.Api.Controllers;
+
+[ApiController]
+[Route("/api")]
+public class ApiController : ControllerBase
+{
+    [HttpGet("version")]
+    public string Version() => "1.0.0E";
+}

src/Nyanlabs.SFood.Api/Controllers/IncidentController.cs

@@ -0,0 +1,39 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Net.Mail;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc;
+using Nyanlabs.SFood.Api.Models;
+using Nyanlabs.SFood.Api.Services;
+
+namespace Nyanlabs.SFood.Api.Controllers;
+
+[ApiController]
+[Route("api/incident")]
+public class IncidentController : ControllerBase
+{
+    public IncidentController(EmailClient mail)
+    {
+        _mail = mail;
+    }
+
+    private readonly EmailClient _mail;
+
+    [HttpPost("submit")]
+    public async Task<IActionResult> SubmitIncident([FromForm] IncidentSubmission incident)
+    {
+        string body = $@"<p>Dziękujemy za zgłoszenie incydentu.<p>
+<p>Dane zgłoszenia:<br/>
+<b>Identyfikator zgłoszenia:</b> {Random.Shared.NextInt64()}<br/>
+<b>Produkt:</b> {incident.ProductName}<br/>
+<b>Producent:</b> {incident.Producer}<br/>
+<b>Opis incydentu:</b> {incident.Description}<br/>
+<b>Miejsce zdarzenia:</b> {incident.Location}<br/>
+<b>Data zgłoszenia:</b> {incident.Submitted.ToLongDateString()}
+</p>";
+
+        return (await _mail.SendRawAsync(incident.SubmitterAddress, body)) ? NoContent() : BadRequest();
+    }
+}

src/Nyanlabs.SFood.Api/Models/Incident.cs

@@ -10,13 +10,11 @@ namespace Nyanlabs.SFood.Api.Models;
 public class IncidentSubmission
 {
     //TODO: Validation
-    [Key]
-    public long Id { get; set; }
     public required string Name { get; set; }
     [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
-    public DateTime Submitted { get; set; }
+    public DateTime Submitted { get; set; } = DateTime.Now;
     [EmailAddress]
-    public string? SubmitterAddress { get; set; }
+    public required string SubmitterAddress { get; set; }
     public required string ProductName { get; set; }
     public required string Producer { get; set; }
     public required string Description { get; set; }

src/Nyanlabs.SFood.Api/Nyanlabs.SFood.Api.csproj

@@ -7,6 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="MailKit" Version="4.2.0" />
     <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="7.0.12" />
     <PackageReference Include="Microsoft.EntityFrameworkCore" Version="7.0.12" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="7.0.12">

src/Nyanlabs.SFood.Api/Program.cs

@@ -1,19 +1,23 @@
 using Microsoft.EntityFrameworkCore;
 using Nyanlabs.SFood.Api;
+using Nyanlabs.SFood.Api.Services;
 
 var builder = WebApplication.CreateBuilder(args);
 
+builder.Services.Configure<EmailClientOptions>(o => builder.Configuration.GetSection("EmailClient").Bind(o));
+
 builder.Services.AddControllers();
 builder.Services.AddEndpointsApiExplorer();
 builder.Services.AddSwaggerGen();
+builder.Services.AddScoped<EmailClient>();
 
-builder.Services.AddDbContext<DataContext>(o =>
-{
-    if (builder.Environment.IsDevelopment())
-    {
-        o.UseSqlite("Data Source=/data/store.db;");
-    }
-});
+// builder.Services.AddDbContext<DataContext>(o =>
+// {
+//     if (builder.Environment.IsDevelopment())
+//     {
+//         o.UseSqlite("Data Source=/data/store.db;");
+//     }
+// });
 
 var app = builder.Build();
 

src/Nyanlabs.SFood.Api/Services/EmailClient.cs

@@ -0,0 +1,79 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Data;
+using System.Linq;
+using System.Net;
+using System.Threading.Tasks;
+using MailKit.Net.Smtp;
+using Microsoft.Extensions.Options;
+using MimeKit;
+
+namespace Nyanlabs.SFood.Api.Services;
+
+public class EmailClient : IDisposable
+{
+    public EmailClient(IOptions<EmailClientOptions> opts)
+    {
+        _opts = opts.Value;
+        _cli = new();
+        _cli.Connect(_opts.Host, _opts.Port, true);
+
+        if (!_cli.IsConnected)
+        {
+            throw new DataException($"Cannot connect to {_opts.Host}:{_opts.Port}...");
+        }
+
+        var credentials = new NetworkCredential(_opts.User, _opts.Password);
+        _cli.Authenticate(credentials);
+        if (!_cli.IsAuthenticated)
+        {
+            throw new DataException($"{_opts.Host}:{_opts.Port}: Cannot authenticate user {_opts.User}.");
+        }
+    }
+
+    private readonly EmailClientOptions _opts;
+    private readonly SmtpClient _cli;
+
+    public async Task<bool> SendAsync([EmailAddress] string addr)
+    {
+        return false;
+    }
+
+    internal async Task<bool> SendRawAsync([EmailAddress] string addr, string html)
+    {
+        MimeMessage msg = new();
+        msg.From.Add(new MailboxAddress(_opts.FromName, _opts.FromAddr));
+
+        var recipient = new MailboxAddress(addr, addr);
+
+        if (recipient is null)
+        {
+            return false;
+        }
+
+        msg.To.Add(recipient);
+
+        msg.Subject = "Zgłoszenie przyjęte";
+        msg.Body = new TextPart("html", html);
+
+        string result = await _cli.SendAsync(msg);
+        return result.StartsWith("2.") && result.Contains("ok", StringComparison.InvariantCultureIgnoreCase);
+    }
+
+    public void Dispose()
+    {
+        _cli.Disconnect(true);
+        _cli.Dispose();
+    }
+}
+
+public record EmailClientOptions
+{
+    public required string Host { get; set; }
+    public required string User { get; set; }
+    public required string Password { get; set; }
+    public required string FromName { get; set; }
+    public required string FromAddr { get; set; }
+    public int Port { get; set; } = 465;
+};