package test

import (
	"fmt"
)

var (
	BAD_ID = fmt.Errorf("invalid backup id")
	BACKUP_ID_TOO_BIG = fmt.Errorf("backup id is too big")
)

func GetFileName(backupId int) (string, error) {
	if backupId <= 0 {
		return "", BAD_ID
	}
	if backupId > 999999 {
		return "", BACKUP_ID_TOO_BIG
	}
	return fmt.Sprintf("Backup#%06d", backupId), nil
}