package utils import ( "errors" "strings" "github.com/jackc/pgx/v5/pgconn" ) // IsDuplicateKeyError checks if the error is a PostgreSQL duplicate key violation func IsDuplicateKeyError(err error) bool { var pgErr *pgconn.PgError if errors.As(err, &pgErr) { // 23505 is the PostgreSQL error code for unique_violation return pgErr.Code == "23505" } // Fallback for other drivers or if error wrapping is different return strings.Contains(err.Error(), "duplicate key value violates unique constraint") }