package dhcpv6

import (
	"log"
)

// from http://www.networksorcery.com/enp/protocol/dhcpv6.htm

// MessageType represents the kind of DHCPv6 message.
type MessageType uint8

// The different kinds of DHCPv6 message types.
const (
	// MessageTypeNone is used internally and is not part of the RFC
	MessageTypeNone               MessageType = 0
	MessageTypeSolicit            MessageType = 1
	MessageTypeAdvertise          MessageType = 2
	MessageTypeRequest            MessageType = 3
	MessageTypeConfirm            MessageType = 4
	MessageTypeRenew              MessageType = 5
	MessageTypeRebind             MessageType = 6
	MessageTypeReply              MessageType = 7
	MessageTypeRelease            MessageType = 8
	MessageTypeDecline            MessageType = 9
	MessageTypeReconfigure        MessageType = 10
	MessageTypeInformationRequest MessageType = 11
	MessageTypeRelayForward       MessageType = 12
	MessageTypeRelayReply         MessageType = 13
	MessageTypeLeaseQuery         MessageType = 14
	MessageTypeLeaseQueryReply    MessageType = 15
	MessageTypeLeaseQueryDone     MessageType = 16
	MessageTypeLeaseQueryData     MessageType = 17
)

func (m MessageType) String() string {
	if s, ok := MessageTypeToStringMap[m]; ok {
		return s
	}
	return "Unknown"
}

// MessageTypeToString converts a MessageType to a human-readable string
// representation.
func MessageTypeToString(t MessageType) string {
	log.Printf("Warning: MessageTypeToString is deprecated and will be removed, use MessageType.String() instead")
	return t.String()
}

// MessageTypeToStringMap contains the mapping of MessageTypes to human-readable
// strings.
var MessageTypeToStringMap = map[MessageType]string{
	MessageTypeSolicit:            "SOLICIT",
	MessageTypeAdvertise:          "ADVERTISE",
	MessageTypeRequest:            "REQUEST",
	MessageTypeConfirm:            "CONFIRM",
	MessageTypeRenew:              "RENEW",
	MessageTypeRebind:             "REBIND",
	MessageTypeReply:              "REPLY",
	MessageTypeRelease:            "RELEASE",
	MessageTypeDecline:            "DECLINE",
	MessageTypeReconfigure:        "RECONFIGURE",
	MessageTypeInformationRequest: "INFORMATION-REQUEST",
	MessageTypeRelayForward:       "RELAY-FORW",
	MessageTypeRelayReply:         "RELAY-REPL",
	MessageTypeLeaseQuery:         "LEASEQUERY",
	MessageTypeLeaseQueryReply:    "LEASEQUERY-REPLY",
	MessageTypeLeaseQueryDone:     "LEASEQUERY-DONE",
	MessageTypeLeaseQueryData:     "LEASEQUERY-DATA",
}