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unit class IRC::Client;

use IRC::Client::Grammar;
use IRC::Client::Grammar::Actions;

has Str:D  $.host                        = 'localhost';
has Bool   $.debug                       = False;
has Str    $.password;
has Int:D  $.port where 0 <= $_ <= 65535 = 6667;
has Str:D  $.nick                        = 'Perl6IRC';
has Str:D  $.username                    = 'Perl6IRC';
has Str:D  $.userhost                    = 'localhost';
has Str:D  $.userreal                    = 'Perl6 IRC Client';
has Str:D  @.channels                    = ['#perl6'];
has        @.plugins;
has        @.servers;
has IO::Socket::Async   $!sock;

method run {
    await IO::Socket::Async.connect( $!host, $!port ).then({
        $!sock = .result;
        self!ssay: "PASS $!password\n" if $!password.defined;
        self!ssay: "NICK $!nick\n";
        self!ssay: "USER $!username $!username $!host :$!userreal\n";

        my $left-overs = '';
        react {
            whenever $!sock.Supply :bin -> $buf is copy {
                my $str = try $buf.decode: 'utf8';
                $str or $str = $buf.decode: 'latin-1';
                $str ~= $left-overs;

                (my $events, $left-overs) = self!parse: $str;
                # for @$events -> $e {
                #     say "[event] $e";
                #     CATCH { warn .backtrace }
                # }
            }

            CATCH { warn .backtrace }
        }
        $!sock.close;
    });
}

method !ssay (Str:D $msg) {
    $!debug and "$msg".put;
    $!sock.print("$msg\n");
    self;
}

method !parse (Str:D $str) {
    return IRC::Client::Grammar.parse(
        $str,
        actions => IRC::Client::Grammar::Actions.new(
            irc    => self,
            server => 'dummy',
        ),
    ).made;
}