add: Environment Var support

internal/services/email_service.go

@@ -37,7 +37,7 @@ func (s *EmailService) SendEmail(to string, subject string, body string) error {
 func ParseTemplate(filename string, data interface{}) (string, error) {
 	// Read the email template file
 
-	templateDir := config.LoadConfig().Templates.MailDir
+	templateDir := config.Templates.MailDir
 	tpl, err := template.ParseFiles(templateDir + "/" + filename)
 	if err != nil {
 		logger.Error.Printf("Failed to parse email template: %v", err)
@@ -106,20 +106,20 @@ func (s *EmailService) SendWelcomeEmail(user *models.User) error {
 func (s *EmailService) NotifyAdminOfNewUser(user *models.User) error {
 	// Prepare data to be injected into the template
 	data := struct {
-		Company         string
-		FirstName       string
+		City            string
+		Email           string
 		LastName        string
 		MembershipModel string
-		MembershipID    int64
-		MembershipFee   float32
-		RentalFee       float32
 		Address         string
-		ZipCode         string
-		City            string
-		DateOfBirth     string
-		Email           string
-		Phone           string
 		IBAN            string
+		FirstName       string
+		Phone           string
+		DateOfBirth     string
+		Company         string
+		ZipCode         string
+		MembershipID    int64
+		RentalFee       float32
+		MembershipFee   float32
 	}{
 		Company:         *user.Company,
 		FirstName:       user.FirstName,
@@ -143,5 +143,5 @@ func (s *EmailService) NotifyAdminOfNewUser(user *models.User) error {
 		logger.Error.Print("Couldn't send admin notification mail")
 		return err
 	}
-	return s.SendEmail(config.LoadConfig().SMTP.AdminEmail, subject, body)
+	return s.SendEmail(config.SMTP.AdminEmail, subject, body)
 }