init

internal/db/errors.go

@@ -0,0 +1,19 @@
+package db
+
+import (
+	"errors"
+	"strings"
+)
+
+var (
+	ErrNotFound = errors.New("record not found")
+	ErrConflict = errors.New("record conflict")
+)
+
+func isUniqueConstraintError(err error) bool {
+	if err == nil {
+		return false
+	}
+
+	return strings.Contains(strings.ToLower(err.Error()), "unique constraint failed")
+}