<?php
/*
** Zabbix
** Copyright (C) 2001-2021 Zabbix SIA
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** 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 General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**/


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

$page['title'] = _('Custom slides');
$page['file'] = 'slides.php';
$page['scripts'] = ['class.svg.canvas.js', 'class.svg.map.js', 'class.pmaster.js', 'class.calendar.js', 'gtlc.js',
	'multiselect.js', 'flickerfreescreen.js', 'layout.mode.js'
];
$page['type'] = detect_page_type(PAGE_TYPE_HTML);
$page['web_layout_mode'] = CViewHelper::loadLayoutMode();

define('ZBX_PAGE_DO_JS_REFRESH', 1);

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

// VAR	TYPE	OPTIONAL	FLAGS	VALIDATION	EXCEPTION
$fields = [
	'hostid' =>				[T_ZBX_INT,			O_OPT, P_SYS,	DB_ID,	null],
	'elementid' =>			[T_ZBX_INT,			O_OPT, P_SYS|P_NZERO, DB_ID, null],
	'step' =>				[T_ZBX_INT,			O_OPT, P_SYS,	BETWEEN(0, 65535), null],
	'from' =>				[T_ZBX_RANGE_TIME,	O_OPT, P_SYS,	null,	null],
	'to' =>					[T_ZBX_RANGE_TIME,	O_OPT, P_SYS,	null,	null],
	'reset' =>				[T_ZBX_STR,			O_OPT, P_SYS,	IN('"reset"'), null],
	// ajax
	'widgetRefresh' =>		[T_ZBX_STR,			O_OPT, null,	null,	null],
	'widgetRefreshRate' =>	[T_ZBX_STR,			O_OPT, P_ACT, null,	null],
	'upd_counter' =>		[T_ZBX_INT,			O_OPT, P_ACT,	null,	null]
];
check_fields($fields);
validateTimeSelectorPeriod(getRequest('from'), getRequest('to'));

/*
 * Permissions
 */
$data = [];

if (getRequest('hostid') && !isReadableHosts([getRequest('hostid')])) {
	access_deny();
}

$data['elementId'] = getRequest('elementid', CProfile::get('web.slides.elementid', 0));
$data['screen'] = ($data['elementId'] != 0) ? get_slideshow_by_slideshowid($data['elementId'], PERM_READ) : [];

if (!$data['screen']) {
	if (hasRequest('elementid')) {
		access_deny();
	}
	else {
		// Redirect to slide show list.
		ob_end_clean();
		redirect((new CUrl('slideconf.php'))
			->setArgument('page', CPagerHelper::loadPage('slideconf.php', null))
			->getUrl()
		);
	}
}

// Save dynamic item hostid.
if (hasRequest('hostid')) {
	CProfile::update('web.slides.hostid', getRequest('hostid'), PROFILE_TYPE_ID);
}
elseif (hasRequest('reset')) {
	CProfile::delete('web.slides.hostid');
}

CProfile::update('web.slides.elementid', $data['elementId'], PROFILE_TYPE_ID);

/*
 * Actions
 */
if (hasRequest('widgetRefresh') || hasRequest('widgetRefreshRate')) {
	$screen = getSlideshowScreens($data['elementId'], getRequest('upd_counter'));

	// display screens
	$dbScreens = $screen
		? API::Screen()->get([
			'screenids' => $screen['screenid'],
			'output' => API_OUTPUT_EXTEND,
			'selectScreenItems' => API_OUTPUT_EXTEND
		])
		: [];

	if (!$dbScreens) {
		echo (new CTableInfo());
	}
	else {
		$dbScreen = reset($dbScreens);

		// get fresh widget data
		if (hasRequest('widgetRefresh')) {
			$screenBuilder = new CScreenBuilder([
				'screen' => $dbScreen,
				'mode' => SCREEN_MODE_PREVIEW,
				'profileIdx' => 'web.slides.filter',
				'profileIdx2' => $data['elementId'],
				'hostid' => getRequest('hostid'),
				'from' => getRequest('from'),
				'to' => getRequest('to')
			]);

			CScreenBuilder::insertScreenCleanJs();

			echo (new CDiv($screenBuilder->show()))
				->addClass(ZBX_STYLE_TABLE_FORMS_CONTAINER)
				->toString();

			CScreenBuilder::insertScreenStandardJs($screenBuilder->timeline);

			insertPagePostJs();
		}

		// refresh rate
		if (hasRequest('widgetRefreshRate')) {
			$widgetRefreshRate = substr(getRequest('widgetRefreshRate'), 1);

			CProfile::update('web.slides.rf_rate.'.WIDGET_SLIDESHOW, $widgetRefreshRate, PROFILE_TYPE_STR,
				$data['elementId']
			);
		}
		else {
			$widgetRefreshRate = CProfile::get('web.slides.rf_rate.'.WIDGET_SLIDESHOW, 1, $data['elementId']);
		}

		$delay = timeUnitToSeconds(($screen['delay'] === '0') ? $data['screen']['delay'] : $screen['delay']);

		$js = 'PMasters["slideshows"].dolls["'.WIDGET_SLIDESHOW.'"].frequency('.
				json_encode($delay * $widgetRefreshRate).
			');'.
			"\n".
			'PMasters["slideshows"].dolls["'.WIDGET_SLIDESHOW.'"].restartDoll();';

		if ($page['type'] == PAGE_TYPE_JS) {
			echo $js;
		}
		elseif ($page['type'] == PAGE_TYPE_HTML_BLOCK) {
			insert_js($js);
		}
	}
}

if ($page['type'] == PAGE_TYPE_JS || $page['type'] == PAGE_TYPE_HTML_BLOCK) {
	require_once dirname(__FILE__).'/include/page_footer.php';
	exit;
}

/*
 * Display
 */
$timeselector_options = [
	'profileIdx' => 'web.slides.filter',
	'profileIdx2' => $data['elementId'],
	'from' => getRequest('from'),
	'to' => getRequest('to')
];
updateTimeSelectorPeriod($timeselector_options);

$data['timeline'] = getTimeSelectorPeriod($timeselector_options);
$data['active_tab'] = CProfile::get('web.slides.filter.active', 1);

// Dynamic item host selector.
if (check_dynamic_items($data['elementId'], 1)) {
	$data['has_dynamic_widgets'] = true;
	$hostid = getRequest('hostid', CProfile::get('web.slides.hostid', 0));
	$data['host'] = ($hostid > 0)
		? CArrayHelper::renameObjectsKeys(API::Host()->get([
			'output' => ['hostid', 'name'],
			'hostids' => [$hostid],
			'monitored_hosts' => 1
		]), ['hostid' => 'id'])
		: [];

	$data['hostid'] = $data['host'] ? $data['host'][0]['id'] : 0;
}
else {
	$data['has_dynamic_widgets'] = false;
}

// get element
$data['element'] = get_slideshow_by_slideshowid($data['elementId'], PERM_READ);
$data['screen']['editable'] = (bool) get_slideshow_by_slideshowid($data['elementId'], PERM_READ_WRITE);

if ($data['screen']['delay'] > 0) {
	$data['element']['delay'] = $data['screen']['delay'];
}

show_messages();

// refresh
$data['refreshMultiplier'] = CProfile::get('web.slides.rf_rate.'.WIDGET_SLIDESHOW, 1, $data['elementId']);

// render view
echo (new CView('monitoring.slides', $data))->getOutput();

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