From 5d1b234b86bd7c3142fa7201929f36f4d7736868 Mon Sep 17 00:00:00 2001
From: Andrey Chervyakov <cognioandrey@gmail.com>
Date: Mon, 15 Mar 2021 01:22:41 +0600
Subject: [PATCH] Add error package

---
 err/err.go | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 err/err.go

diff --git a/err/err.go b/err/err.go
new file mode 100644
index 0000000..3d61cb7
--- /dev/null
+++ b/err/err.go
@@ -0,0 +1,47 @@
+package err
+
+import (
+	"github.com/labstack/echo/v4"
+	"net/http"
+)
+
+type NotFoundError struct {
+	Message string
+}
+
+func (err NotFoundError) Error() string {
+	return err.Message
+}
+
+type UnknownError struct {
+	Message string
+}
+
+func (err UnknownError) Error() string {
+	return err.Message
+}
+
+type AlreadyExistsError struct {
+	Message string
+}
+
+func (err AlreadyExistsError) Error() string {
+	return err.Message
+}
+
+func MapErrToHTTPErr(err interface{}) *echo.HTTPError {
+	switch v := err.(type) {
+	case NotFoundError:
+		return echo.NewHTTPError(http.StatusNotFound, v.Message)
+	case UnknownError:
+		if v.Message != "" {
+			return echo.NewHTTPError(http.StatusInternalServerError, v.Message)
+		} else {
+			return echo.NewHTTPError(http.StatusInternalServerError)
+		}
+	case AlreadyExistsError:
+		return echo.NewHTTPError(http.StatusBadRequest, v.Message)
+	default:
+		return nil
+	}
+}