package irc

import (
    "fmt";
    "strings";
)

const (
    RplWelcome  = "001";
    RplYourhost = "002";
    RplCreated  = "003";
    RplMyinfo   = "004";
    RplBounce   = "005";
    RplUserhost = "302";
    RplAway     = "301";
    RplUnaway   = "305";
    RplNowaway  = "306";
    RplWhoisuser = "311";
    RplWhoisserver = "312";
    RplWhoisoperator = "313";
    RplWhoisidle = "317";
    RplEndofwhois = "318";
    RplWhoischannels = "319";
    RplWhowasuser = "314";
    RplEndofwhowas = "369";
    RplList = "322";
    RplListend = "323";
    RplUniqopis = "325";
    RplChannelmodeis = "324";
    RplNotopic = "331";
    RplTopic = "332";
    RplInviting = "341";
    RplSummoning = "342";
    RplInvitelist = "346";
    RplEndofinvitelist = "347";
    RplExceptlist = "348";
    RplEndofexceptlist = "349";
    RplVersion = "351";
    RplWhoreply = "352";
    RplEndofwho = "315";
    RplNamereply = "353";
    RplEndofnames = "366";
    RplLinks = "364";
    RplEndoflinks = "365";
    RplBanlist = "367";
    RplEndofbanlist = "368";
    RplInfo = "371";
    RplEndofinfo = "374";
    RplMotdstart = "375";
    RplMotd = "372";
    RplEndofmotd = "376";
    RplYouroper = "381";
    RplRehashing = "382";
    RplYourservice = "383";
    RplTime = "391";
    RplUserstat = "392";
    RplUsers = "393";
    RplEndofusers = "394";
    RplNousers = "395";
)

/*
Who - the full name (nick!n=username@host) or server
Command - the IRC command
Args - the arguments to the command before the last arg that is prefixed by a :
LastArg - the final arg that is prefixed by a : (it is stored without the : prefix)
*/
type IrcMessage struct {
    Who, Command, LastArg string;
    Args []string;
}


/*
Parses out string and returns a IrcMessage object.
*/
func ParseMessage(msg string) *IrcMessage {
    var parts []string;

    if (msg[0] == ':') {
        parts = strings.Split(msg[1:len(msg)], ":", 2);
    }

    else {
        parts = strings.Split(msg, ":", 1);
    }

    words := strings.Split(parts[0], " ", 0);
    ircmsg := new(IrcMessage);
    ircmsg.Who = words[0];
    ircmsg.Command = words[1];

    if len(parts) > 1 {
        ircmsg.LastArg = parts[1];
    }

    ircmsg.Args = words[2:len(words)];
    fmt.Printf("%v\n", ircmsg);
    return ircmsg;
}

func (msg *IrcMessage) CompileMessage() string {
    return fmt.Sprintf(":%s %s %s :%s\r\n", msg.Who, msg.Command, strings.Join(msg.Args, " "), msg.LastArg);
}