refactor: use external email package

internal/api/server.go

@@ -18,6 +18,7 @@ import (
 	"gitea.urkob.com/urko/btc-pay-checker/internal/services/mail"
 	"gitea.urkob.com/urko/btc-pay-checker/internal/services/price"
 	"gitea.urkob.com/urko/btc-pay-checker/kit/cfg"
+	"gitea.urkob.com/urko/emailsender/pkg/email"
 )
 
 const (
@@ -30,7 +31,7 @@ type RestServer struct {
 	config     *cfg.Config
 	btcService *btc.BitcoinService
 	orderSrv   *services.Order
-	mailSrv    *mail.MailService
+	emailSrv   *mail.MailService
 	priceSrv   *price.PriceConversor
 }
 
@@ -39,14 +40,14 @@ func NewRestServer(
 	orderSrv *services.Order,
 	btcService *btc.BitcoinService,
 	priceSrv *price.PriceConversor,
-	mailSrv *mail.MailService,
+	emailSrv *email.EmailService,
 ) *RestServer {
 	return &RestServer{
 		config:     config,
 		orderSrv:   orderSrv,
 		btcService: btcService,
 		priceSrv:   priceSrv,
-		mailSrv:    mailSrv,
+		emailSrv:   mail.NewMailService(emailSrv),
 	}
 }
 
@@ -118,7 +119,7 @@ func (s *RestServer) onNotification(ctx context.Context, notifChan chan domain.N
 		}
 
 		// Send email to client and provider
-		if err := s.mailSrv.SendProviderConfirm(mail.SendOK{
+		if err := s.emailSrv.SendProviderConfirm(mail.SendOK{
 			Tx:          order.Tx,
 			Block:       order.Block,
 			Amount:      order.Amount,