package main

import (
	"regexp"
)

const (
	VERSION              = "1.0.0"
	APP_DESCRIPTION      = "nmdc-ircfrontend v" + VERSION
	BLESSED_CHANNEL      = "#chat" // must be lowercase
	BLESSED_CHANNEL_MODE = "n"     // means that you have to be in the channel to chat, but that's it

	NICKS_PER_PROTOMSG      = 128 //The capacity sets the max number of nicks to send per message
	CLIENT_READ_BUFFSIZE    = 512
	CLIENT_READ_TIMEOUT_SEC = 3
)

var (
	nickRegexp    = regexp.MustCompile(`^[a-zA-Z\[\]_^{|}][a-zA-Z0-9\[\]_^{|}]*$`)
	channelRegexp = regexp.MustCompile(`^#[a-zA-Z0-9_\-]+$`)
)

type eventType int

const (
	disconnected eventType = iota
	command
)

type Event struct {
	client *Client
	input  string
	event  eventType
}

type Channel struct {
	clientMap map[string]*Client
	modeMap   map[string]*ClientMode
}

type ClientMode struct {
	operator bool //Channel operator
}

func (m *ClientMode) Prefix() string {
	if m.operator {
		return "@"
	} else {
		return ""
	}
}

func (m *ClientMode) String() string {
	if m.operator {
		return "o"
	} else {
		return ""
	}
}

type signalCode int

const (
	signalStop signalCode = iota
)

type replyCode int

const (
	rplWelcome replyCode = iota
	rplJoin
	rplPart
	rplTopic
	rplNoTopic
	rplNames
	rplEndOfNames
	rplNickChange
	rplKill
	rplMsg
	rplList
	rplListEnd
	rplOper
	rplChannelModeIs
	rplKick
	rplInfo
	rplVersion
	rplMOTDStart
	rplMOTD
	rplEndOfMOTD
	rplPong
	errMoreArgs
	errNoNick
	errInvalidNick
	errNickInUse
	errAlreadyReg
	errNoSuchNick
	errUnknownCommand
	errNotReg
	errPassword
	errNoPriv
	errCannotSend
)