package bech32

// ChecksumConst is a type that represents the currently defined bech32
// checksum constants.
type ChecksumConst int

const (
	// Version0Const is the original constant used in the checksum
	// verification for bech32.
	Version0Const ChecksumConst = 1
	// VersionMConst is the new constant used for bech32m checksum
	// verification.
	VersionMConst ChecksumConst = 0x2bc830a3
)

// Version defines the current set of bech32 versions.
type Version uint8

const (
	// Version0 defines the original bech version.
	Version0 Version = iota
	// VersionM is the new bech32 version defined in BIP-350, also known as
	// bech32m.
	VersionM
	// VersionUnknown denotes an unknown bech version.
	VersionUnknown
)

func VersionToConsts() map[Version]ChecksumConst {
	return map[Version]ChecksumConst{
		Version0: Version0Const,
		VersionM: VersionMConst,
	}
}

func ConstsToVersion() map[ChecksumConst]Version {
	return map[ChecksumConst]Version{
		Version0Const: Version0,
		VersionMConst: VersionM,
	}
}