#!/usr/bin/env perl
use strict;
use warnings;
use LWP::Simple;
use URI::Escape;
use utf8;
use Math::Trig;

$| = 1;

binmode(STDOUT, ':utf8');
use Data::Dumper;
use AnyEvent::XMPP::IM::Connection;
use AnyEvent::XMPP::Ext::Disco;
use AnyEvent::XMPP::Ext::MUC;

my $nick = "O_O";
my $room = 'sg@conference.jabber.ru';
my $own_jid = "azq2\@jabber.ru";

my $cond = AnyEvent->condvar;
my $conn = AnyEvent::XMPP::IM::Connection->new(
    jid      => $own_jid, 
    password => '', 
    resource => "xuj"
);
my $disco = AnyEvent::XMPP::Ext::Disco->new;
my $muc   = AnyEvent::XMPP::Ext::MUC->new(disco => $disco);

$conn->add_extension($disco);
$conn->add_extension($muc);

$conn->reg_cb(contact_request_subscribe => sub {
	my (undef, undef, $contact) = @_;
	$contact->send_subscribed;
});

$conn->reg_cb(message => sub {
	my (undef, $msg) = @_;
	print "message = ".$msg->body."\n";
	
	my $out_msg = parse_cmd($msg->body);
	if (defined $out_msg) {
		my $reply = $msg->make_reply;
		$reply->add_body($out_msg);
		$reply->send;
	}
});

$conn->reg_cb(session_ready => sub {
    $muc->join_room($conn, $room, $nick);
});

$muc->reg_cb(message => sub {
	my (undef, undef, $msg) = @_;
	
	print "body = ".$msg->body."\n";
	return if $msg->is_delayed;
	
	my $body = $msg->body;
	if ($msg->type && $msg->type eq 'groupchat') {
		return if ($msg->from eq $own_jid);
		if ($body =~ /^$nick([:,])\s*(.*)/) {
			my $from = $msg->from_nick;
			$body = $2;
		} else {
			#return;
		}
	}
	my $out_msg = parse_cmd($body);
	if (defined $out_msg) {
		my $reply = $msg->make_reply;
		$reply->add_body($out_msg);
		$reply->send;
		return;
	}
	if ($body =~ /Your messages to/) {
		AnyEvent::XMPP::IM::Message->new (
			body => $msg->from.": ".$msg->body,
			to   => "azq2\@ya.ru"
		)->send($conn);
	}
});

my @money_types = ('ATS','AUD','BEF','BYR','CAD','CHF','CNY','DEM','DKK','EEK', 
	'EGP','ESP','EUR','FIM','FRF','GBP','GRD','IEP','ISK','ITL', 
	'JPY','KGS','KWD','KZT','LTL','NLG','NOK','PTE','SDR','SEK', 
	'SGD','TRL','TRY','UAH','USD','XDR','YUN','RUB');
my @months = ("Январь", "Февраль", "Март", "Апрель", "Май", "Июнь", "Июль", "Август", "Сентябрь", "Октябрь", "Ноябрь", "Декабрь");
sub parse_cmd {
	my ($cmd) = @_;
	
	my @args = split(/\s+/, $cmd);
	if ($args[0] eq "cy") {
		my $from = undef;
		my $to = undef;
		my $sum = 0;
		for (my $i = 1; $i <= 3; ++$i) {
			last if (!defined($args[$i]));
			if ($args[$i] =~ /^\d+(\.\d+)?$/) {
				$sum = $args[$i];
			} elsif (!defined($from)) {
				$from = uc($args[$i]);
			} elsif (!defined($to)) {
				$to = uc($args[$i]);
			}
		}
		
		if (!defined($to) || !defined($from) || !($from ~~ @money_types) || !($to ~~ @money_types)) {
			return $args[0]." <from> <to> <sum>\nВалюты: ".join(", ", @money_types);
		}
		
		my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst) = localtime(time);
		my $data = get "http://quote.rbc.ru/cgi-bin/conv/external/converter.shtml?source=cb.0&tid_from=$from&commission=1.0&tid_to=$to&summa=$sum&day=$mday&mon=".uri_escape_utf8($months[$mon - 1])."&year=".(1900 + $year);
		if ($data =~ /<td class="b">([\d\.]+)<\/td>\s+<\/tr>\s+<tr>\s+<td>[^<>]+<\/td>\s+<td class="b">([\.\d]+)<\/td>\s+<\/tr>\s+<tr>\s+<td>[a-z]+<\/td>\s+<td class="b">([\.\d]+)<\/td>/sui) {
			return "$1 $from = $3 $to (Курс: 1 $from = $2 $to)";
		}
	} elsif ($args[0] eq "dec2bin") {
		return dec2bin($args[1]);
	} elsif ($args[0] eq "bin2dec") {
		return bin2dec($args[1]);
	} elsif ($args[0] eq "hex2dec") {
		return hex($args[1]);
	} elsif ($args[0] eq "dex2hex") {
		return sprintf("%d", $args[1]);
	} elsif ($args[0] eq "icalc") {
		my $code = " ".substr($cmd, length $args[0]);
		$code =~ s/([^\d\+\-\*\/\^\%\|\&\sa-z\,><\(\)])//sig;
		$code =~ s/([^a-z0-9])([a-z][a-z0-9]*)/check_calc_function($1, $2)/sieg;
		
		my $out;
		$out = eval("\$out = ".$code.";");
		$out = "" if (!defined $out);
		$out .= $@ if ($@);
		
		print "code = '$code'\n'$out'\n";
		
		return $out;
	}
	return undef;
}

our %calc_functions = (
	"pow"   => sub { return $_[0] ** $_[1] }, 
	"sin"   => sub { return sin($_[0]); }, 
	"cos"   => sub { return cos($_[0]); }, 
	"atan2" => sub { return atan2($_[0], $_[1]); }, 
	"exp"   => sub { return exp($_[0]); }, 
	"hex"   => sub { return hex($_[0]); }, 
	"int"   => sub { return int($_[0]); }, 
	"log"   => sub { return log($_[0]); }, 
	"oct"   => sub { return oct($_[0]); }, 
	"rand"  => sub { return rand($_[0]); }, 
	"time"  => sub { return time(); }, 
	"sqrt"  => sub { return sqrt($_[0]); }, 
	"abs"   => sub { return $_[0] < 0 ? -$_[0] : $_[0]; }, 
	"max"   => sub { return $_[0] > $_[1] ? $_[0] : $_[1]; }, 
	"min"   => sub { return $_[0] < $_[1] ? $_[0] : $_[1]; }, 
	
	"tan"      => sub { return tan($_[0]); }, 
	"csc"      => sub { return csc($_[0]); }, 
	"cosec"    => sub { return cosec($_[0]); }, 
	"sec"      => sub { return sec($_[0]); }, 
	"cot"      => sub { return cot($_[0]); }, 
	"cotan"    => sub { return cotan($_[0]); }, 
	"asin"     => sub { return asin($_[0]); }, 
	"acos"     => sub { return acos($_[0]); }, 
	"atan"     => sub { return atan($_[0]); }, 
	"atan2"    => sub { return atan2($_[0], $_[0]); }, 
	"acsc"     => sub { return acsc($_[0]); }, 
	"acosec"   => sub { return acosec($_[0]); }, 
	"asec"     => sub { return asec($_[0]); }, 
	"acot"     => sub { return acot($_[0]); }, 
	"acotan"   => sub { return acotan($_[0]); }, 
	"sinh"     => sub { return sinh($_[0]); }, 
	"cosh"     => sub { return cosh($_[0]); }, 
	"tanh"     => sub { return tanh($_[0]); }, 
	"csch"     => sub { return csch($_[0]); }, 
	"cosech"   => sub { return cosech($_[0]); }, 
	"sech"     => sub { return sech($_[0]); }, 
	"coth"     => sub { return coth($_[0]); }, 
	"cotanh"   => sub { return cotanh($_[0]); }, 
	"asinh"    => sub { return asinh($_[0]); }, 
	"acosh"    => sub { return acosh($_[0]); }, 
	"atanh"    => sub { return atanh($_[0]); }, 
	"acsch"    => sub { return acsch($_[0]); }, 
	"acosech"  => sub { return acosech($_[0]); }, 
	"asech"    => sub { return asech($_[0]); }, 
	"acoth"    => sub { return acoth($_[0]); }, 
	"acotanh"  => sub { return acotanh($_[0]); }, 
	"pi"       => sub { return pi(); }, 
	"pi2"      => sub { return pi2(); }, 
	"pi4"      => sub { return pi4(); }, 
	"pip2"     => sub { return pip2(); }, 
	"pip4"     => sub { return pip4(); }, 
	
	"deg2rad"  => sub { return deg2rad($_[0]); }, 
	"grad2rad" => sub { return grad2rad($_[0]); }, 
	"rad2deg"  => sub { return rad2deg($_[0]); }, 
	"grad2deg" => sub { return grad2deg($_[0]); }, 
	"deg2grad" => sub { return deg2grad($_[0]); }, 
	"rad2grad" => sub { return rad2grad($_[0]); }, 
	"dec2bin" => sub { return dec2bin($_[0]); }, 
	
	"system" => sub { return "bash: ".$_[0].": команда не найдена"; }, 
);


sub calc {
	die "function ".$_[0]." not found!"
		if (!exists $calc_functions{$_[0]});
	return $calc_functions{$_[0]};
}
sub check_calc_function {
	return $_[0]."&{calc('".$_[1]."')}";
}
sub dec2bin {
	my $str = unpack("B32", pack("N", shift));
	$str =~ s/^0+(?=\d)//;
	return $str;
}
sub bin2dec {
	return unpack("N", pack("B32", substr("0" x 32 . shift, -32)));
}
$conn->connect;
$cond->recv;