<?php
/*
 * This file is part of Web Instant Messenger project.
 *
 * Copyright (c) 2005-2008 Internet Services Ltd.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Evgeny Gryaznov - initial API and implementation
 */

function operator_by_login($login) {
	$link = connect();
	$operator = select_one_row(
		 "select * from chatoperator where vclogin = '".mysql_real_escape_string($login)."'", $link );
	mysql_close($link);
	return $operator;
}

function operator_by_id_($id,$link) {
	return select_one_row(
		 "select * from chatoperator where operatorid = $id", $link );
}

function operator_by_id($id) {
	$link = connect();
	$operator = operator_by_id_($id,$link);
	mysql_close($link);
	return $operator;
}

function get_operators() {
	$link = connect();

	$query = "select * from chatoperator order by vclogin";
	$result = select_multi_assoc($query, $link);
	mysql_close($link);
	return $result;
}

function update_operator($operatorid,$login,$password,$localename,$commonname) {
	$link = connect();
	$query = sprintf(
		"update chatoperator set vclogin = '%s',%s vclocalename = '%s', vccommonname = '%s'".
		" where operatorid = %s",
		mysql_real_escape_string($login),
		($password ? " vcpassword='".md5($password)."'," : ""),
		mysql_real_escape_string($localename),
		mysql_real_escape_string($commonname),
		$operatorid );

	perform_query($query,$link);
	mysql_close($link);
}

function create_operator_($login,$password,$localename,$commonname,$link) {
	$query = sprintf(
		"insert into chatoperator (vclogin,vcpassword,vclocalename,vccommonname) values ('%s','%s','%s','%s')",
			mysql_real_escape_string($login),
			md5($password),
			mysql_real_escape_string($localename),
			mysql_real_escape_string($commonname));

	perform_query($query,$link);
	$id = mysql_insert_id($link);

	return select_one_row("select * from chatoperator where operatorid = $id", $link );
}

function create_operator($login,$password,$localename,$commonname) {
	$link = connect();
	$newop = create_operator_($login,$password,$localename,$commonname,$link);
	mysql_close($link);
	return $newop;
}

function notify_operator_alive($operatorid) {
	$link = connect();
	perform_query("update chatoperator set dtmlastvisited = CURRENT_TIMESTAMP where operatorid = $operatorid",$link);
	mysql_close($link);
}

function has_online_operators() {
	global $online_timeout;
	$link = connect();
	$row = select_one_row("select min(unix_timestamp(CURRENT_TIMESTAMP)-unix_timestamp(dtmlastvisited)) as time from chatoperator",$link);
	mysql_close($link);
	return $row['time'] < $online_timeout;
}

function get_operator_name($operator) {
	global $home_locale, $current_locale;
	if( $home_locale == $current_locale )
		return $operator['vclocalename'];
	else
		return $operator['vccommonname'];
}

function generate_button($title,$locale,$inner,$showhost,$forcesecure) {
	$link = get_app_location($showhost,$forcesecure)."/client.php". ($locale?"?locale=".$locale : "");
	$temp = get_popup($link, $inner, $title, "webim", "toolbar=0,scrollbars=0,location=0,status=1,menubar=0,width=600,height=420,resizable=1" );
	return "<!-- webim button -->".$temp."<!-- / webim button -->";
}

function check_login() {
	global $webimroot;
	if( !isset( $_SESSION['operator'] ) ) {
		if( isset($_COOKIE['webim_lite']) ) {
			list($login,$pwd) = split(",", $_COOKIE['webim_lite'], 2);
			$op = operator_by_login($login);
			if( $op && isset($pwd) && isset($op['vcpassword']) && md5($op['vcpassword']) == $pwd ) {
				$_SESSION['operator'] = $op;
				return $op;
			}
		}
		$_SESSION['backpath'] = $_SERVER['PHP_SELF'];
		header("Location: $webimroot/operator/login.php");
		exit;
	}
	return $_SESSION['operator'];
}

function get_logged_in() {
	return isset( $_SESSION['operator'] ) ? $_SESSION['operator'] : FALSE;
}

function login_operator($operator,$remember) {
	global $webimroot;
	$_SESSION['operator'] = $operator;
	if( $remember ) {
		$value = $operator['vclogin'].",".md5($operator['vcpassword']);
		setcookie('webim_lite', $value, time()+60*60*24*1000, "$webimroot/");

	} else if( isset($_COOKIE['webim_lite']) ) {
		setcookie('webim_lite', '', time() - 3600, "$webimroot/");
	}
}

function logout_operator() {
	global $webimroot;
	$_SESSION['operator'] = NULL;
	$_SESSION['backpath'] = NULL;
	if( isset($_COOKIE['webim_lite']) ) {
		setcookie('webim_lite', '', time() - 3600, "$webimroot/");
	}
}

?>