AuthorBuddy/Services/EmailService.cs

using System.Net;
using System.Net.Mail;
using AuthorBuddy.Web.Models;

namespace AuthorBuddy.Web.Services;

public class EmailService : IEmailService
{
    private readonly SmtpSettings _settings;

    public EmailService(SmtpSettings settings)
    {
        _settings = settings;
    }

    public bool IsConfigured => _settings.Enabled
        && !string.IsNullOrEmpty(_settings.Host)
        && !string.IsNullOrEmpty(_settings.FromAddress);

    public async Task<bool> SendPasswordAsync(string recipientEmail, string recipientName, string newPassword)
    {
        if (!IsConfigured) return false;

        try
        {
            using var client = new SmtpClient(_settings.Host, _settings.Port)
            {
                EnableSsl = _settings.UseSsl,
                Credentials = string.IsNullOrEmpty(_settings.Username)
                    ? null
                    : new NetworkCredential(_settings.Username, _settings.Password)
            };

            using var msg = new MailMessage
            {
                From = new MailAddress(_settings.FromAddress, _settings.FromName),
                Subject = "Ihr Author-Buddy-Passwort",
                Body = $"Hallo {recipientName},\n\n"
                     + $"Ihr neues Passwort für Author Buddy lautet:\n\n"
                     + $"  {newPassword}\n\n"
                     + $"Bitte ändern Sie es nach dem Login.\n\n"
                     + $"Mit freundlichen Grüßen\nIhr Author-Buddy-Team",
                IsBodyHtml = false
            };
            msg.To.Add(recipientEmail);

            await client.SendMailAsync(msg);
            return true;
        }
        catch
        {
            return false;
        }
    }
}