package repository

import (
	"errors"

	"github.com/jackc/pgx/v5/pgconn"
)

// isConstraintViolation reports whether err is Postgres refusing a row on the named
// constraint or unique index, with the given SQLSTATE.
func isConstraintViolation(err error, code, constraint string) bool {
	var pgErr *pgconn.PgError
	return errors.As(err, &pgErr) && pgErr.Code == code && pgErr.ConstraintName == constraint
}

func isUniqueViolation(err error, constraint string) bool {
	return isConstraintViolation(err, "23505", constraint)
}

// isForeignKeyViolation reports whether err is a row still referenced from elsewhere,
// or pointing at one that does not exist, whatever the constraint.
func isForeignKeyViolation(err error) bool {
	var pgErr *pgconn.PgError
	return errors.As(err, &pgErr) && pgErr.Code == "23503"
}