feat: initialized smtp service;

refactor: config now returns a copy of a struct to prevent editing;
chore: corrected identation

backend/config/config.go

@@ -153,7 +153,7 @@ func Load() (*Config, error) {
 	return &cfg, nil
 }
 
-func GetConfig() *Config {
+func GetConfig() Config {
 
 	if config == nil {
 
@@ -162,7 +162,7 @@ func GetConfig() *Config {
 		}
 	}
 
-	return config
+	return *config
 }
 
 var config *Config

backend/internal/errors/smtp.go

@@ -0,0 +1,10 @@
+package errors
+
+import (
+	"errors"
+)
+
+var (
+	ErrSmtpDisabled = errors.New("Smtp is not enabled in the config")
+	ErrSmtpSendFailure = errors.New("Failed to send email")
+)

backend/internal/services/smtp.go

@@ -16,3 +16,22 @@
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 package services
+
+import "go.uber.org/zap"
+
+type SmtpService interface {
+	SendEmail(to string, content string)
+}
+
+type smtpServiceImpl struct {
+	log *zap.Logger
+}
+
+func NewSmtpService(_log *zap.Logger) SmtpService {
+	return &smtpServiceImpl{log: _log}
+}
+
+func (s *smtpServiceImpl) SendEmail(to string, content string) {
+	panic("unimplemented")
+}
+