<?php
/*
 * This file is part of Mibew Messenger project.
 * 
 * Copyright (c) 2005-2011 Mibew Messenger Community
 * All rights reserved. The contents of this file are subject to 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
 * 
 * Alternatively, the contents of this file may be used under the terms of
 * the GNU General Public License Version 2 or later (the "GPL"), in which case
 * the provisions of the GPL are applicable instead of those above. If you wish
 * to allow use of your version of this file only under the terms of the GPL, and
 * not to allow others to use your version of this file under the terms of the
 * EPL, indicate your decision by deleting the provisions above and replace them
 * with the notice and other provisions required by the GPL.
 * 
 * Contributors:
 *    Evgeny Gryaznov - initial API and implementation
 */

require_once('../libs/common.php');
require_once('../libs/chat.php');
require_once('../libs/operator.php');

$operator = check_login();
force_password($operator);

setlocale(LC_TIME, getstring("time.locale"));

$page = array();
$page['operator'] = topage(get_operator_name($operator));
$page['availableDays'] = range(1, 31);
$page['availableMonth'] = get_month_selection(time() - 400 * 24 * 60 * 60, time() + 50 * 24 * 60 * 60);
$page['showresults'] = false;
$errors = array();

if (isset($_GET['startday'])) {
	$startday = verifyparam("startday", "/^\d+$/");
	$startmonth = verifyparam("startmonth", "/^\d{2}.\d{2}$/");
	$endday = verifyparam("endday", "/^\d+$/");
	$endmonth = verifyparam("endmonth", "/^\d{2}.\d{2}$/");
	$start = get_form_date($startday, $startmonth);
	$end = get_form_date($endday, $endmonth) + 24 * 60 * 60;

} else {
	$curr = getdate(time());
	if ($curr['mday'] < 7) {
		// previous month
		if ($curr['mon'] == 1) {
			$month = 12;
			$year = $curr['year'] - 1;
		} else {
			$month = $curr['mon'] - 1;
			$year = $curr['year'];
		}
		$start = mktime(0, 0, 0, $month, 1, $year);
		$end = mktime(0, 0, 0, $month, date("t", $start), $year) + 24 * 60 * 60;
	} else {
		$start = mktime(0, 0, 0, $curr['mon'], 1, $curr['year']);
		$end = time() + 24 * 60 * 60;
	}
}
set_form_date($start, "start");
set_form_date($end - 24 * 60 * 60, "end");

if ($start > $end) {
	$errors[] = getlocal("statistics.wrong.dates");
}

$link = connect();

$page['reportByDate'] = select_multi_assoc("select DATE(t.dtmcreated) as date, COUNT(distinct t.threadid) as threads, SUM(m.ikind = $kind_agent) as agents, SUM(m.ikind = $kind_user) as users, ROUND(AVG(unix_timestamp(t.dtmchatstarted)-unix_timestamp(t.dtmcreated)),1) as avgwaitingtime, ROUND(AVG(tmp.lastmsgtime - unix_timestamp(t.dtmchatstarted)),1) as avgchattime " .
										"from ${mysqlprefix}chatmessage m, ${mysqlprefix}chatthread t, (SELECT i.threadid, unix_timestamp(MAX(i.dtmcreated)) AS lastmsgtime  FROM ${mysqlprefix}chatmessage i WHERE (ikind = $kind_user OR ikind = $kind_agent) GROUP BY i.threadid) tmp " .
										"where m.threadid = t.threadid AND tmp.threadid = t.threadid AND unix_timestamp(m.dtmcreated) >= $start AND unix_timestamp(m.dtmcreated) < $end group by DATE(m.dtmcreated) order by m.dtmcreated desc", $link);

$page['reportByDateTotal'] = select_one_row("select DATE(t.dtmcreated) as date, COUNT(distinct t.threadid) as threads, SUM(m.ikind = $kind_agent) as agents, SUM(m.ikind = $kind_user) as users, ROUND(AVG(unix_timestamp(t.dtmchatstarted)-unix_timestamp(t.dtmcreated)),1) as avgwaitingtime, ROUND(AVG(tmp.lastmsgtime - unix_timestamp(t.dtmchatstarted)),1) as avgchattime " .
										"from ${mysqlprefix}chatmessage m, ${mysqlprefix}chatthread t, (SELECT i.threadid, unix_timestamp(MAX(i.dtmcreated)) AS lastmsgtime  FROM ${mysqlprefix}chatmessage i WHERE (ikind = $kind_user OR ikind = $kind_agent) GROUP BY i.threadid) tmp " .
										"where m.threadid = t.threadid AND tmp.threadid = t.threadid AND unix_timestamp(m.dtmcreated) >= $start AND unix_timestamp(m.dtmcreated) < $end", $link);

$page['reportByAgent'] = select_multi_assoc("select vclocalename as name, COUNT(distinct threadid) as threads, SUM(ikind = $kind_agent) as msgs, AVG(CHAR_LENGTH(tmessage)) as avglen " .
											"from ${mysqlprefix}chatmessage, ${mysqlprefix}chatoperator " .
											"where agentId = operatorid AND unix_timestamp(dtmcreated) >= $start AND unix_timestamp(dtmcreated) < $end group by operatorid", $link);

$page['reportByPage'] = select_multi_assoc("SELECT COUNT(threadid) as chattimes, referer FROM ${mysqlprefix}chatthread WHERE unix_timestamp(dtmcreated) >= $start AND unix_timestamp(dtmcreated) < $end GROUP BY referer", $link);

$page['showresults'] = count($errors) == 0;

close_connection($link);

prepare_menu($operator);
start_html_output();
require('../view/statistics.php');
?>