subrouters

internal/server/response/error.go

@@ -4,6 +4,7 @@ import (
 	"errors"
 	"fmt"
 	"net/http"
+	"ruben/inventory2/internal/consts"
 	"strings"
 )
 
@@ -133,3 +134,27 @@ func GetError(err error) (e ErrorResponse, ok bool) {
 	ok = errors.As(err, &e)
 	return e, ok
 }
+
+// error wrapping utilities
+
+func ErrorFromConstant(err error) error {
+	cerr := err
+	for cerr != nil {
+		switch cerr {
+		case consts.ErrNotFound:
+			return NotFound()
+		case consts.ErrConflict:
+			return Conflict()
+		}
+
+		uerr, ok := cerr.(interface {
+			Unwrap() error
+		})
+		if !ok {
+			return err
+		}
+
+		cerr = uerr.Unwrap()
+	}
+	return err
+}