package types

import (
    "bytes"
    "net"
    "ripple/bug"
)

type Instruction struct {
	Command   byte
	Arguments []byte
}

type UserIdentifier struct {
	Username      string
	ServerAddress string
}

type ClientRemote struct {
	Addr    *net.UDPAddr
	Counter uint32
}

type Transaction struct {
	Identifier UserIdentifier
	Instruction
}

type UserRequest struct {
	Remote ClientRemote
	Instruction
}

func bytesToString(data []byte) string {
	idx := bytes.IndexByte(data, 0)
	if idx == -1 {
		idx = len(data)
	}
	return string(data[:idx])
}

func NewUserIdentifierFromBytes(raw []byte) UserIdentifier {
	if len(raw) != 64 {
		panic(bug.BugInvalidOperation)
	}
	return UserIdentifier{
		Username:      bytesToString(raw[0:32]),
		ServerAddress: bytesToString(raw[32:64]),
	}
}