create antrian validation handling

internal/shared/validationError.go

@@ -0,0 +1,39 @@
+package shared
+
+import (
+	"errors"
+
+	"github.com/go-playground/validator/v10"
+)
+
+func ValidationError(err error) []string {
+	var ve validator.ValidationErrors
+	var result []string
+
+	if !errors.As(err, &ve) {
+		return []string{
+			err.Error(),
+		}
+	}
+
+	for _, fe := range ve {
+		result = append(result, errorMessage(fe))
+	}
+
+	return result
+}
+
+func errorMessage(fe validator.FieldError) string {
+	var errorInfo string
+
+	switch fe.Tag() {
+	case "required":
+		errorInfo = "tidak boleh kosong"
+	case "min":
+		errorInfo = "harus diisi minimal " + fe.Param()
+	default:
+		errorInfo = "tidak valid"
+	}
+
+	return fe.Field() + " " + errorInfo
+}