package types

import (
	"fmt"

	"archgrid.xyz/ag/toolsbox/hash/crc64"
)

type CRC64Algorithm string

const (
	CRC64_ISO  CRC64Algorithm = "iso"
	CRC64_ECMA CRC64Algorithm = "ecma"
)

func (a *CRC64Algorithm) String() string {
	return string(*a)
}

func (a *CRC64Algorithm) Set(s string) error {
	switch s {
	case "iso", "ecma":
		*a = CRC64Algorithm(s)
		return nil
	default:
		return fmt.Errorf("不支持的CRC64算法：%s", s)
	}
}

func (a *CRC64Algorithm) Type() string {
	return "CRC64Algorithm"
}

func (a CRC64Algorithm) IntoCRC64Mode() crc64.CRC64Mode {
	switch a {
	case CRC64_ISO:
		return crc64.ISO
	case CRC64_ECMA:
		return crc64.ECMA
	default:
		return crc64.ISO
	}
}