<?php

////////////////////////////////////////////////////////////////////////////
//
// Web to date Chat Plugin
// Autor: Volker Sauer, etor Softwareentwicklung e.K.
// Bottroper Str. 19, 45899 Gelsenkirchen, sauer@etor.de
//
// index.php
// Hauptsteuerung des Chats, Anmelden, Abmelden
// Letzte Änderung: 24.04.2006
//
////////////////////////////////////////////////////////////////////////////

define('RUNNING', true);
require('common.php');

// Schalter für geschlossene Benutzergruppe
if (CHAT_PRIVATE)
	$template->show('private');
else
	$template->show('public');

// Anmeldung beim Chat
if (is_post('join')) {
	if (CHAT_PRIVATE) {
		// Passwort Überprüfung
		if (!(isset($private_users[strtolower(post('username'))]) && $private_users[strtolower(post('username'))] == post('password'))) {
			$template->file('start.tpl');
			$template->assign(array(
				'_error_message' => $lang['username.password.invalid'],
				'_username' => post('username'),
			));
			$template->out();
			exit;
		}
	} else {
		// Gültigkeitsprüfung Benutzername
		if (!preg_match('/^[0-9a-zA-Z]{3,10}$/', post('username'))) {
			$template->file('start.tpl');
			$template->assign(array(
				'_error_message' => $lang['username.invalid'],
				'_username' => post('username'),
			));
			$template->out();
			exit;
		}
	}
	// Kontrollieren ob bereits im Chat
	foreach ($userlist as $user)
		if (strtolower($user->username) == strtolower(post('username'))) {
			if ($user->session_id == $session_id)
				$self = true;
			else
				$taken = true;
			break;
		}
	// Benutzername ist in Gebrauch
	if (isset($taken)) {
		$template->file('start.tpl');
		$template->assign(array(
			'_error_message' => $lang['username.in.use'],
			'_username' => post('username'),
		));
		$template->out();
		exit;
	// Überrpfung ob Chat voll ist
	} else if (!isset($self) && count($userlist) + 1 > MAX_USERS) {
		$template->file('start.tpl');
		$template->assign(array(
			'_error_message' => $lang['chat.full'],
			'_username' => post('username'),
		));
		$template->out();
		exit;
	// Anmelden falls nicht bereits im Chat
	} else if (!isset($self)) {
		$session_id = md5(uniqid(rand()));
		$cookie_path = '/';
		$cookie_domain = '';
		setcookie('session_id', $session_id, 0, $cookie_path, $cookie_domain, 0) or die('Error setting cookie');
		setcookie('username', post('username'), time() + 86400 * 365, $cookie_path, $cookie_domain, 0) or die('Error setting cookie');
		$user = new user();
		$user->username = ucfirst(strtolower(post('username')));
		$user->session_id = $session_id;
		$user->session_time = time();
		$user->message_time = time();

		$line = new line();
		$line->timestamp = time();
		$line->username = '';
		$line->target = '';
		$line->message = sprintf($lang['login.message'], $user->username);

		$user->line = add_line($line) - 1;
		update_userlist($user);
	}
	redirect('index.php');

// Debug Variablen ausgeben
} else if (is_get('debug')) {
	print_r($userlist);
	$file = file(DATA_PATH.FILENAME_CHATLINES);
	$chatlines = unserialize($file[0]);
	print_r($chatlines);

// AJAX Abfrage der Benutzerliste
} else if (is_get('userlist')) {
	$users = array();
	foreach ($userlist as $user)
		array_push($users, $user->username);
	sort($users);
	echo implode(',', $users);
	exit;

// Benutzer wurde ausgeloggt
} else if (is_get('loggedout')) {
	$template->file('start.tpl');
	$template->assign(array(
		'_message' => $lang['you.got.logged.out'],
		'_username' => isset($_COOKIE['username']) ? $_COOKIE['username'] : '',
	));

// Benutzer hat den Chat verlassen
} else if (is_get('logout')) {
	$template->file('start.tpl');
	$template->assign(array(
		'_message' => $lang['you.logged.out'],
		'_username' => isset($_COOKIE['username']) ? $_COOKIE['username'] : '',
	));
	$line = new line();
	$line->timestamp = time();
	$line->username = '';
	$line->target = '';
	$line->message = sprintf($lang['logout.message'], $userlist[$session_id]->username);
	add_line($line);
	drop_from_userlist($userlist[$session_id]);

// Benutzer hat kein ActiveX
} else if (is_get('nohttp')) {
	$template->file('start.tpl');
	$template->assign(array(
		'_error_message' => $lang['you.need.activex'],
		'_username' => isset($_COOKIE['username']) ? $_COOKIE['username'] : '',
	));

// Falls Benutzer nicht im Chat eingeloggt
} else if (!isset($userlist[$session_id])) {
	$template->file('start.tpl');
	$template->assign(array(
		'_username' => isset($_COOKIE['username']) ? $_COOKIE['username'] : '',
	));

//  Chat anzeigen falls nicht zu lange idle
} else {
	if (time() - $userlist[$session_id]->session_time < MAX_IDLE_TIME && time() - $userlist[$session_id]->message_time < MAX_MESSAGE_TIME) {
		$template->file('chat.tpl');
		foreach($smilies as $code => $img)
			$template->loop('smilies', array(
				'code' => $code,
				'img' => 'images/'.$img,
			), array());
		$template->assign(array(
			'_chat_height' => CHAT_HEIGHT - 125 + (USE_SMILIES ? 0 : 20),
			'_wait' => REFRESH_TIME * 1000 / 20,
			'_max_lines' => MAX_LINES,
			'_username' => $userlist[$session_id]->username,
			'_use_smilies' => USE_SMILIES ? 1 : 0,
			'_send_ressource' => substr($lang['send'], 0, 10),
		));
	} else {
		drop_from_userlist($userlist[$session_id]);
		update_userlist();
	}
}

$template->out();
exit;

?>