package Horris::Connection;
# ABSTRACT: Single IRC Connection


use Moose;
use AnyEvent::IRC::Client;
use Const::Fast;
use Horris::Message;
use namespace::clean -except => qw/meta/;

with 'MooseX::Role::Pluggable';

const my $IRC_DEFAULT_PORT => 6667;

has irc => (
	is => 'rw', 
	isa => 'AnyEvent::IRC::Client', 
	handles => {
		send_srv => 'send_srv', 
	}
);

has nickname => (
	is => 'ro', 
	isa => 'Str', 
	required => 1
);

has password => (
	is => 'ro', 
	isa => 'Str', 
);

has port => (
	is => 'ro', 
	isa => 'Str', 
	default => $IRC_DEFAULT_PORT, 
);

has server => (
	is => 'ro', 
	isa => 'Str', 
	required => 1
);

has username => (
	is => 'ro', 
	isa => 'Str', 
	lazy_build => 1
);

has channels => (
	is => 'ro', 
	isa => 'ArrayRef[Str]', 
);

# plugin's preference from configfle,
# Horris::Connection::Plugin using it when all the plugins are initialize.
has 'plugin' => (
    traits => ['Hash'], 
    is => 'ro', 
    isa => 'HashRef', 
    handles => {
        get_args => 'get',
    }, 
);

sub _build_username { $_[0]->nickname }

sub run {
	my $self = shift;
	foreach my $plugin (@{ $self->plugin_list }) { # WARNING: DO NOT CHANGE: plugin_list is lazy_build. it means initialize all the plugins at here.
		$plugin->init($self);
	}

	my $irc = AnyEvent::IRC::Client->new();
	$self->irc($irc);

	$irc->reg_cb(disconnect => sub { $self->occur_event('on_disconnect'); });
	$irc->reg_cb(connect => sub {
		my ($con, $err) = @_;
		if (defined $err) {
			warn "connect error: $err\n";
			return;
		}

		warn "connected to: " . $self->server . ":" . $self->port if $Horris::DEBUG;
		$self->occur_event('on_connect');
	});

	$irc->reg_cb(irc_privmsg => sub {
		my ($con, $raw) = @_;
		my $message = Horris::Message->new(
			channel => $raw->{params}->[0], 
			message => $raw->{params}->[1], 
			from	=> $raw->{prefix}
		);

		$self->occur_event('irc_privmsg', $message) if $message->from->nickname ne $self->nickname; # loop guard
	});

	$irc->reg_cb(privatemsg => sub {
		my ($con, $nick, $raw) = @_;
		my $message = Horris::Message->new(
			channel => '', 
			message => $raw->{params}->[1], 
			from    => defined $raw->{prefix} ? $raw->{prefix} : '', 
		);
		$self->occur_event('on_privatemsg', $nick, $message);
	});

	$irc->connect($self->server, $self->port, {
		nick => $self->nickname,
		user => $self->username,
		password => $self->password,
		timeout => 1,
	});
}

sub irc_notice {
    my ($self, $args) = @_;
    $self->send_srv(NOTICE => $args->{channel} => $args->{message});
}

sub irc_privmsg {
    my ($self, $args) = @_;
    $self->send_srv(PRIVMSG => $args->{channel} => $args->{message});
}

sub irc_mode {
    my ($self, $args) = @_;
    $self->send_srv(MODE => $args->{channel} => $args->{mode}, $args->{who});
}

sub occur_event {
	my ($self, $event, @args) = @_;
	my $plugins = $self->plugin_hash;
	foreach my $plugin_name (@{ $self->plugins }) {
		my $plugin = $plugins->{$plugin_name};
		my $rev = $plugin->$event(@args) if $plugin->can($event);

		# Don't try next plugin for $event if current plugin returns true 
		last if defined $rev and $rev;
	}
}

__PACKAGE__->meta->make_immutable();

1;

__END__
=pod

=encoding utf-8

=head1 NAME

Horris::Connection - Single IRC Connection

=head1 VERSION

version v0.1.2

=head1 SYNOPSIS

    use Horris::Connection;

    my $conn = Horris::Connection->new(
        nickname => $nickname,
        port     => $port_number,
        password => $optional_password,
        server   => $server_name,
        username => $username,
		plugins	 => [qw/Foo Bar Baz/], 
    );

=head1 HOW TO IMPLEMENTS YOUR OWN HOOK METHODS?

=over

=item 1 Make your own Pluggin Module. like a L<Horris::Connection::Plugin::Foo>.

=item 2 check the list what you want to implement event.

=over

=item * on_connect - no args

=item * on_disconnect - no args

=item * on_privatemsg - args with (nickname, Horris::Message)

=item * irc_privmsg - args with (Horris::Message)

=back

=item 3 implements

	sub on_connect {
		my ($self) = @_;
		# your stuff here after connected
	}

=back

=head1 AUTHOR

hshong <hshong@perl.kr>

=head1 COPYRIGHT AND LICENSE

This software is copyright (c) 2011 by hshong.

This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.

=cut