package types

import "strings"

// Identifier as defined by the kea database entries. Values are hardcoded from
// a running instance of schema version 22.1
type Identifier int

func (i Identifier) Int() int {
	return int(i)
}

//go:generate stringer -linecomment -type=Identifier
const (
	HwAddress Identifier = 0   // hwaddr
	DuID      Identifier = 1   // duid
	CircuitId Identifier = 2   // circuit-id
	ClientId  Identifier = 3   // client-id
	FlexId    Identifier = 4   // flex-id
	Invalid   Identifier = 255 // invalid
)

// TODO: is there a generator that can create the lookup table for me?
var types = map[string]Identifier{
	"macaddr":    HwAddress,
	"hwaddr":     HwAddress,
	"duid":       DuID,
	"circuit-id": CircuitId,
	"client-id":  ClientId,
	"flex-id":    FlexId,
	"invalid":    Invalid,
}

func LookupIdentifier(rtype string) Identifier {
	rtype = strings.ToLower(rtype)
	if t, ok := types[rtype]; ok == true {
		return t
	}
	return Invalid
}