<?php
/*
** Copyright (C) 2001-2025 Zabbix SIA
**
** This program is free software: you can redistribute it and/or modify it under the terms of
** the GNU Affero General Public License as published by the Free Software Foundation, version 3.
**
** This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
** without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
** See the GNU Affero General Public License for more details.
**
** You should have received a copy of the GNU Affero General Public License along with this program.
** If not, see <https://www.gnu.org/licenses/>.
**/


require_once dirname(__FILE__).'/include/config.inc.php';
require_once dirname(__FILE__).'/include/graphs.inc.php';

$page['file'] = 'chart6.php';
$page['type'] = PAGE_TYPE_IMAGE;

require_once dirname(__FILE__).'/include/page_header.php';

// VAR	TYPE	OPTIONAL	FLAGS	VALIDATION	EXCEPTION
$fields = [
	'graphid' =>		[T_ZBX_INT,			O_MAND, P_SYS,		DB_ID,		null],
	'from' =>			[T_ZBX_RANGE_TIME,	O_OPT, P_SYS,		null,		null],
	'to' =>				[T_ZBX_RANGE_TIME,	O_OPT, P_SYS,		null,		null],
	'profileIdx' =>		[T_ZBX_STR,			O_OPT, null,		null,		null],
	'profileIdx2' =>	[T_ZBX_STR,			O_OPT, null,		null,		null],
	'width' =>			[T_ZBX_INT,			O_OPT, P_NZERO,	BETWEEN(20, 65535),	null],
	'height' =>			[T_ZBX_INT,			O_OPT, P_NZERO,	'{} > 0',	null],
	'graph3d' =>		[T_ZBX_INT,			O_OPT, P_NZERO,	IN('0,1'),	null],
	'legend' =>			[T_ZBX_INT,			O_OPT, null,	IN('0,1'),	null],
	'widget_view' =>	[T_ZBX_INT,			O_OPT, null,	IN('0,1'),	null],
	'resolve_macros' =>	[T_ZBX_INT,			O_OPT, null,	IN('0,1'),	null]
];
if (!check_fields($fields)) {
	session_write_close();
	exit();
}
validateTimeSelectorPeriod(getRequest('from'), getRequest('to'));

/*
 * Permissions
 */
$dbGraph = API::Graph()->get([
	'output' => API_OUTPUT_EXTEND,
	'selectGraphItems' => ['itemid', 'sortorder', 'color', 'calc_fnc', 'type'],
	'selectHosts' => ['name'],
	'graphids' => $_REQUEST['graphid']
]);

if (!$dbGraph) {
	access_deny();
}
else {
	$dbGraph = reset($dbGraph);
}

/*
 * Display
 */
$timeline = getTimeSelectorPeriod([
	'profileIdx' => getRequest('profileIdx'),
	'profileIdx2' => getRequest('profileIdx2'),
	'from' => getRequest('from'),
	'to' => getRequest('to')
]);

$graph = new CPieGraphDraw($dbGraph['graphtype']);
$graph->setPeriod($timeline['to_ts'] - $timeline['from_ts']);
$graph->setSTime($timeline['from_ts']);

$width = getRequest('width', 0);
if ($width <= 0) {
	$width = $dbGraph['width'];
}

$height = getRequest('height', 0);
if ($height <= 0) {
	$height = $dbGraph['height'];
}

if (getRequest('widget_view') === '1') {
	$graph->draw_header = false;
	$graph->with_vertical_padding = false;
}

$graph->setWidth($width);
$graph->setHeight($height);

// array sorting
CArrayHelper::sort($dbGraph['gitems'], [
	['field' => 'sortorder', 'order' => ZBX_SORT_UP]
]);

$db_items = API::Item()->get([
	'output' => ['value_type'],
	'itemids' => array_column($dbGraph['gitems'], 'itemid'),
	'webitems' => true,
	'preservekeys' => true
]);

$resolve_macros = (bool) getRequest('resolve_macros', 0);

// get graph items
foreach ($dbGraph['gitems'] as $gItem) {
	if ($db_items[$gItem['itemid']]['value_type'] != ITEM_VALUE_TYPE_BINARY) {
		$graph->addItem($gItem['itemid'], $resolve_macros, $gItem['calc_fnc'], $gItem['color'], $gItem['type']);
	}
}

$hostName = '';

foreach ($dbGraph['hosts'] as $gItemHost) {
	if ($hostName === '') {
		$hostName = $gItemHost['name'];
	}
	elseif ($hostName !== $gItemHost['name']) {
		$hostName = '';
		break;
	}
}

$graph->setHeader(($hostName === '') ? $dbGraph['name'] : $hostName.NAME_DELIMITER.$dbGraph['name']);

if ($dbGraph['show_3d']) {
	$graph->switchPie3D();
}
$graph->showLegend(getRequest('legend', $dbGraph['show_legend']));
$graph->draw();

require_once dirname(__FILE__).'/include/page_footer.php';
