oliverbooth.dev/OliverBooth/Controllers/ContactController.cs

using MailKitSimplified.Sender.Services;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Primitives;

namespace OliverBooth.Controllers;

[Controller]
[Route("contact/submit")]
public class ContactController : Controller
{
    private readonly ILogger<ContactController> _logger;
    private readonly IConfiguration _configuration;
    private readonly IConfigurationSection _destination;

    /// <summary>
    ///     Initializes a new instance of the <see cref="ContactController" /> class.
    /// </summary>
    /// <param name="logger">The logger.</param>
    /// <param name="configuration">The configuration.</param>
    public ContactController(ILogger<ContactController> logger, IConfiguration configuration)
    {
        _logger = logger;
        _configuration = configuration;
        _destination = configuration.GetSection("Mail").GetSection("Destination");
    }

    [HttpGet("{_?}")]
    public IActionResult OnGet(string _)
    {
        _logger.LogWarning("Method GET for endpoint {Path} is not supported!", Request.Path);
        return RedirectToPage("/Contact/Index");
    }

    [HttpPost("other")]
    public async Task<IActionResult> HandleForm()
    {
        if (!Request.HasFormContentType)
        {
            return RedirectToPage("/Contact/Other");
        }

        IFormCollection form = Request.Form;
        StringValues name = form["name"];
        StringValues email = form["email"];
        StringValues subject = form["subject"];
        StringValues message = form["message"];

        await using SmtpSender sender = CreateSender();
        await sender.WriteEmail
            .To("Oliver Booth", _destination.Get<string>())
            .From(name, email)
            .Subject($"[Contact via Website] {subject}")
            .BodyText(message)
            .SendAsync();

        TempData["Success"] = true;
        return RedirectToPage("/Contact/Result");
    }

    private SmtpSender CreateSender()
    {
        IConfigurationSection mailSection = _configuration.GetSection("Mail");
        string? mailServer = mailSection.GetSection("Server").Value;
        string? mailUsername = mailSection.GetSection("Username").Value;
        string? mailPassword = mailSection.GetSection("Password").Value;

        var sender = SmtpSender.Create(mailServer);
        sender.SetCredential(mailUsername, mailPassword);
        return sender;
    }
}