feat(ports): define consumer-side interfaces, sentinel errors, IsUniqueViolation

2026-09-14 19:47:27 +08:00
parent f99f5a7878
commit 0c3b34c184
3 changed files with 126 additions and 0 deletions
@@ -13,6 +13,9 @@ import (
 // ErrLastAdmin is returned by DeleteUser when attempting to delete the last admin.
 var ErrLastAdmin = errors.New("cannot delete the last admin")

+// ErrUniqueViolation is a sentinel for PostgreSQL unique constraint violations.
+var ErrUniqueViolation = errors.New("unique violation")
+
 // IsUniqueViolation reports whether err is a PostgreSQL unique constraint violation (23505).
 func IsUniqueViolation(err error) bool {
 	var pgErr *pgconn.PgError