feat: SMTP salida propio en webhook de soporte

pkg/services/soporte_service.go

@@ -1,13 +1,95 @@
 package services
 
 import (
+	"crypto/tls"
 	"fmt"
 	"log"
+	"net/smtp"
+	"strings"
 
 	"github.com/sujit-baniya/fiber-boilerplate/app"
 	"github.com/sujit-baniya/fiber-boilerplate/pkg/models"
 )
 
+// soporteSendMail envía un correo usando la configuración SMTP del webhook de soporte.
+// Si no hay SMTP configurado, usa app.Http.Mail como fallback.
+func soporteSendMail(to, subject, htmlBody string) error {
+	cfg, err := models.GetSoporteWebhookActivo()
+	if err != nil || cfg == nil || cfg.SmtpHost == "" {
+		return app.Http.Mail.Send(to, subject, htmlBody)
+	}
+	from := cfg.SmtpFromAddr
+	if from == "" {
+		from = cfg.EmailDestino
+	}
+	if from == "" {
+		return app.Http.Mail.Send(to, subject, htmlBody)
+	}
+	fromName := cfg.SmtpFromName
+	if fromName == "" {
+		fromName = "Soporte"
+	}
+	port := cfg.SmtpPort
+	if port == 0 {
+		port = 587
+	}
+	auth := smtp.PlainAuth("", cfg.SmtpUsername, cfg.SmtpPassword, cfg.SmtpHost)
+	msg := []byte(fmt.Sprintf("From: %s <%s>\r\nTo: %s\r\nSubject: %s\r\nMIME-Version: 1.0\r\nContent-Type: text/html; charset=UTF-8\r\n\r\n%s", fromName, from, to, subject, htmlBody))
+	addr := fmt.Sprintf("%s:%d", cfg.SmtpHost, port)
+	enc := strings.ToLower(cfg.SmtpEncryption)
+	if enc == "tls" {
+		tlsCfg := &tls.Config{ServerName: cfg.SmtpHost}
+		conn, err := tls.Dial("tcp", addr, tlsCfg)
+		if err != nil {
+			return fmt.Errorf("soporte SMTP TLS: %w", err)
+		}
+		client, err := smtp.NewClient(conn, cfg.SmtpHost)
+		if err != nil {
+			conn.Close()
+			return fmt.Errorf("soporte SMTP client: %w", err)
+		}
+		defer client.Close()
+		if err = client.Auth(auth); err != nil {
+			return fmt.Errorf("soporte SMTP auth: %w", err)
+		}
+		if err = client.Mail(from); err != nil {
+			return err
+		}
+		if err = client.Rcpt(to); err != nil {
+			return err
+		}
+		w, err := client.Data()
+		if err != nil {
+			return err
+		}
+		_, err = w.Write(msg)
+		if err != nil {
+			return err
+		}
+		return w.Close()
+	}
+	if enc == "starttls" {
+		tlsCfg := &tls.Config{ServerName: cfg.SmtpHost}
+		conn, err := smtp.Dial(addr)
+		if err != nil {
+			goto fallback
+		}
+		if err = conn.StartTLS(tlsCfg); err != nil {
+			conn.Close()
+			goto fallback
+		}
+		if err = conn.Auth(auth); err != nil {
+			conn.Close()
+			return fmt.Errorf("soporte SMTP STARTTLS auth: %w", err)
+		}
+		return smtp.SendMail(addr, auth, from, []string{to}, msg)
+	}
+	return smtp.SendMail(addr, auth, from, []string{to}, msg)
+
+fallback:
+	return app.Http.Mail.Send(to, subject, htmlBody)
+}
+
 // SendSoporteAutoRespuesta envía acuse de recibo automático al crear un ticket por email
 func SendSoporteAutoRespuesta(ticket *models.ProyectoTicket) {
 	if ticket == nil || ticket.EmailFrom == "" {
@@ -39,7 +121,7 @@ func SendSoporteAutoRespuesta(ticket *models.ProyectoTicket) {
 </div></body></html>`, ticket.AutorNombre, mensaje, ticket.ID, ticket.Titulo, ticket.Descripcion)
 
 	go func() {
-		if err := app.Http.Mail.Send(ticket.EmailFrom, subject, htmlBody); err != nil {
+		if err := soporteSendMail(ticket.EmailFrom, subject, htmlBody); err != nil {
 			log.Printf("[Soporte] Error enviando auto-respuesta a %s: %v", ticket.EmailFrom, err)
 		} else {
 			log.Printf("[Soporte] Auto-respuesta enviada a %s (ticket #%d)", ticket.EmailFrom, ticket.ID)
@@ -78,7 +160,7 @@ func SendSoporteNotifAdmin(ticket *models.ProyectoTicket) {
 </div></body></html>`, ticket.AutorNombre, ticket.EmailFrom, ticket.Titulo, ticket.Descripcion, absAppURL(""), ticket.ID)
 
 	go func() {
-		if err := app.Http.Mail.Send(adminEmail, subject, htmlBody); err != nil {
+		if err := soporteSendMail(adminEmail, subject, htmlBody); err != nil {
 			log.Printf("[Soporte] Error notificando admin: %v", err)
 		}
 	}()