Khwezi Mngoma
61 lines
2.5 KiB
C#
61 lines
2.5 KiB
C#
using LiteCharms.Models.Configuraton.Email;
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namespace LiteCharms.Features.Utilities.Commands.Handlers;
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public class SendEmailCommandHandler(IOptions<SmtpSettings> smtpOptions) : IRequestHandler<SendEmailCommand, Result>
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{
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public async ValueTask<Result> Handle(SendEmailCommand request, CancellationToken cancellationToken)
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{
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try
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{
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var settings = smtpOptions.Value;
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if(settings == null)
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return Result.Fail(new Error("SMTP settings are not configured."));
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if(settings.Credentials == null)
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return Result.Fail(new Error("SMTP credentials are not configured."));
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if(string.IsNullOrWhiteSpace(settings.Credentials.Username) || string.IsNullOrWhiteSpace(settings.Credentials.Password))
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return Result.Fail(new Error("SMTP credentials are incomplete."));
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if(string.IsNullOrWhiteSpace(settings.Host) || settings.Port == 0)
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return Result.Fail(new Error("SMTP host and port must be configured."));
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var message = new MimeMessage();
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message.From.Add(new MailboxAddress(request.SenderName, request.From!));
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message.To.Add(new MailboxAddress(request.RecipientName, request.To!));
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message.Subject = request.Subject!;
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var bodyBuilder = new BodyBuilder();
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if(request.Attachment?.Length > 0 && !string.IsNullOrEmpty(request.AttachmentFileName))
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bodyBuilder.Attachments.Add(request.AttachmentFileName!, request.Attachment!, cancellationToken);
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if (!request.IsHtml) bodyBuilder.TextBody = request.Message;
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if (request.IsHtml) bodyBuilder.HtmlBody = request.Message;
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message.Body = bodyBuilder.ToMessageBody();
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using var client = new SmtpClient();
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await client.ConnectAsync(settings.Host!, settings.Port, settings.UseSsl, cancellationToken);
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await client.AuthenticateAsync(settings.Credentials!.Username!, settings.Credentials.Password!, cancellationToken);
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var response = await client.SendAsync(message, cancellationToken);
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bool emailSent = response.Contains("OK", StringComparison.InvariantCultureIgnoreCase);
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await client.DisconnectAsync(true, cancellationToken);
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return emailSent
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? Result.Ok()
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: Result.Fail(new Error("Failed to send email. SMTP response: " + response));
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}
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catch (Exception ex)
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{
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return Result.Fail(new Error(ex.Message).CausedBy(ex));
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}
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}
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}
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