using GestionIntegral.Api.Models.Comunicaciones;
using MailKit.Net.Smtp;
using MailKit.Security;
using Microsoft.Extensions.Options;
using MimeKit;

namespace GestionIntegral.Api.Services.Comunicaciones
{
    public class EmailService : IEmailService
    {
        private readonly MailSettings _mailSettings;
        private readonly ILogger<EmailService> _logger;

        public EmailService(IOptions<MailSettings> mailSettings, ILogger<EmailService> logger)
        {
            _mailSettings = mailSettings.Value;
            _logger = logger;
        }

        public async Task EnviarEmailAsync(string destinatarioEmail, string destinatarioNombre, string asunto, string cuerpoHtml, byte[]? attachment = null, string? attachmentName = null)
        {
            var email = new MimeMessage();
            email.Sender = new MailboxAddress(_mailSettings.SenderName, _mailSettings.SenderEmail);
            email.From.Add(email.Sender);
            email.To.Add(new MailboxAddress(destinatarioNombre, destinatarioEmail));
            email.Subject = asunto;

            var builder = new BodyBuilder { HtmlBody = cuerpoHtml };
            if (attachment != null && !string.IsNullOrEmpty(attachmentName))
            {
                builder.Attachments.Add(attachmentName, attachment, ContentType.Parse("application/pdf"));
            }
            email.Body = builder.ToMessageBody();

            using var smtp = new SmtpClient();
            try
            {
                await smtp.ConnectAsync(_mailSettings.SmtpHost, _mailSettings.SmtpPort, SecureSocketOptions.StartTls);
                await smtp.AuthenticateAsync(_mailSettings.SmtpUser, _mailSettings.SmtpPass);
                await smtp.SendAsync(email);
                _logger.LogInformation("Email enviado exitosamente a {Destinatario}", destinatarioEmail);
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "Error al enviar email a {Destinatario}", destinatarioEmail);
                throw; // Relanzar para que el servicio que lo llamó sepa que falló
            }
            finally
            {
                await smtp.DisconnectAsync(true);
            }
        }

        public async Task EnviarEmailConsolidadoAsync(string destinatarioEmail, string destinatarioNombre, string asunto, string cuerpoHtml, List<(byte[] content, string name)> adjuntos)
        {
            var email = new MimeMessage();
            email.Sender = new MailboxAddress(_mailSettings.SenderName, _mailSettings.SenderEmail);
            email.From.Add(email.Sender);
            email.To.Add(new MailboxAddress(destinatarioNombre, destinatarioEmail));
            email.Subject = asunto;

            var builder = new BodyBuilder { HtmlBody = cuerpoHtml };

            if (adjuntos != null)
            {
                foreach (var adjunto in adjuntos)
                {
                    builder.Attachments.Add(adjunto.name, adjunto.content, ContentType.Parse("application/pdf"));
                }
            }

            email.Body = builder.ToMessageBody();

            using var smtp = new SmtpClient();
            try
            {
                await smtp.ConnectAsync(_mailSettings.SmtpHost, _mailSettings.SmtpPort, SecureSocketOptions.StartTls);
                await smtp.AuthenticateAsync(_mailSettings.SmtpUser, _mailSettings.SmtpPass);
                await smtp.SendAsync(email);
                _logger.LogInformation("Email consolidado enviado exitosamente a {Destinatario}", destinatarioEmail);
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "Error al enviar email consolidado a {Destinatario}", destinatarioEmail);
                throw;
            }
            finally
            {
                await smtp.DisconnectAsync(true);
            }
        }
    }
}