<?php
/*
** Zabbix
** Copyright (C) 2001-2014 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.
**/


function sysmap_element_types($type = null) {
	$types = array(
		SYSMAP_ELEMENT_TYPE_HOST => _('Host'),
		SYSMAP_ELEMENT_TYPE_HOST_GROUP => _('Host group'),
		SYSMAP_ELEMENT_TYPE_TRIGGER => _('Trigger'),
		SYSMAP_ELEMENT_TYPE_MAP => _('Map'),
		SYSMAP_ELEMENT_TYPE_IMAGE => _('Image')
	);

	if (is_null($type)) {
		natsort($types);
		return $types;
	}
	elseif (isset($types[$type])) {
		return $types[$type];
	}
	else {
		return _('Unknown');
	}
}

function sysmapElementLabel($label = null) {
	$labels = array(
		MAP_LABEL_TYPE_LABEL => _('Label'),
		MAP_LABEL_TYPE_IP => _('IP address'),
		MAP_LABEL_TYPE_NAME => _('Element name'),
		MAP_LABEL_TYPE_STATUS => _('Status only'),
		MAP_LABEL_TYPE_NOTHING => _('Nothing'),
		MAP_LABEL_TYPE_CUSTOM => _('Custom label')
	);

	if (is_null($label)) {
		return $labels;
	}
	elseif (isset($labels[$label])) {
		return $labels[$label];
	}
	else {
		return false;
	}
}

/**
 * Create map area with submenu for sysmap elements.
 * In submenu gathered information about urls, scripts and submaps.
 *
 * @param array $sysmap
 * @param array $options
 * @param int   $options['severity_min']
 *
 * @return CAreaMap
 */
function getActionMapBySysmap($sysmap, array $options = array()) {
	$sysmap['selements'] = zbx_toHash($sysmap['selements'], 'selementid');
	$sysmap['links'] = zbx_toHash($sysmap['links'], 'linkid');

	$actionMap = new CAreaMap('links'.$sysmap['sysmapid']);

	$areas = populateFromMapAreas($sysmap);
	$mapInfo = getSelementsInfo($sysmap, $options);
	processAreasCoordinates($sysmap, $areas, $mapInfo);

	$hostIds = array();
	foreach ($sysmap['selements'] as $id => &$selement) {
		if ($selement['elementtype'] == SYSMAP_ELEMENT_TYPE_HOST) {
			$hostIds[$selement['elementid']] = $selement['elementid'];

			// expanding hosts url macros again as some hosts were added from hostgroup areeas
			// and automatic expanding only happens for elements that are defined for map in db
			foreach ($selement['urls'] as $urlId => $url) {
				$selement['urls'][$urlId]['url'] = str_replace('{HOST.ID}', $selement['elementid'], $url['url']);
			}
		}

		if ($selement['elementsubtype'] == SYSMAP_ELEMENT_SUBTYPE_HOST_GROUP_ELEMENTS) {
			unset($sysmap['selements'][$id]);
		}
	}
	unset($selement);

	$hostScripts = API::Script()->getScriptsByHosts($hostIds);

	$hosts = API::Host()->get(array(
		'nodeids' => get_current_nodeid(true),
		'hostids' => $hostIds,
		'output' => array('status'),
		'nopermissions' => true,
		'preservekeys' => true,
		'selectScreens' => API_OUTPUT_COUNT
	));

	foreach ($sysmap['selements'] as $elem) {
		$back = get_png_by_selement($mapInfo[$elem['selementid']]);
		$area = new CArea(
			array(
				$elem['x'],
				$elem['y'],
				$elem['x'] + imagesx($back),
				$elem['y'] + imagesy($back)
			),
			'', '', 'rect'
		);
		$area->addClass('menu-map');

		$hostId = null;
		$scripts = null;
		$gotos = null;

		switch ($elem['elementtype']) {
			case SYSMAP_ELEMENT_TYPE_HOST:
				$host = $hosts[$elem['elementid']];

				if ($hostScripts[$elem['elementid']]) {
					$hostId = $elem['elementid'];
					$scripts = $hostScripts[$elem['elementid']];
				}
				if ($hosts[$elem['elementid']]['status'] == HOST_STATUS_MONITORED) {
					$gotos['triggerStatus'] = array(
						'hostid' => $elem['elementid'],
						'show_severity' => isset($options['severity_min']) ? $options['severity_min'] : null
					);
				}
				if ($host['screens']) {
					$gotos['screens'] = array(
						'hostid' => $host['hostid']
					);
				}
				$gotos['inventory'] = array(
					'hostid' => $host['hostid']
				);
				break;

			case SYSMAP_ELEMENT_TYPE_MAP:
				$gotos['submap'] = array(
					'sysmapid' => $elem['elementid'],
					'severity_min' => isset($options['severity_min']) ? $options['severity_min'] : null
				);
				break;

			case SYSMAP_ELEMENT_TYPE_TRIGGER:
				$gotos['events'] = array(
					'triggerid' => $elem['elementid'],
					'nav_time' => time() - SEC_PER_WEEK
				);
				break;

			case SYSMAP_ELEMENT_TYPE_HOST_GROUP:
				$gotos['triggerStatus'] = array(
					'groupid' => $elem['elementid'],
					'hostid' => 0,
					'show_severity' => isset($options['severity_min']) ? $options['severity_min'] : null
				);
				break;
		}

		order_result($elem['urls'], 'name');

		$area->setMenuPopup(getMenuPopupMap($hostId, $scripts, $gotos, $elem['urls']));

		$actionMap->addItem($area);
	}

	return $actionMap;
}

function get_icon_center_by_selement($element, $info, $map) {
	$x = $element['x'];
	$y = $element['y'];

	if (isset($element['elementsubtype']) && $element['elementsubtype'] == SYSMAP_ELEMENT_SUBTYPE_HOST_GROUP_ELEMENTS) {
		if ($element['areatype'] == SYSMAP_ELEMENT_AREA_TYPE_CUSTOM) {
			$w = $element['width'];
			$h = $element['height'];
		}
		else {
			$w = $map['width'];
			$h = $map['height'];
		}
	}
	else {
		$image = get_png_by_selement($info);
		$w = imagesx($image);
		$h = imagesy($image);
	}

	$x += $w / 2;
	$y += $h / 2;

	return array($x, $y);
}

function myDrawLine($image, $x1, $y1, $x2, $y2, $color, $drawtype) {
	if ($drawtype == MAP_LINK_DRAWTYPE_BOLD_LINE) {
		zbx_imagealine($image, $x1, $y1, $x2, $y2, $color, LINE_TYPE_BOLD);
	}
	elseif ($drawtype == MAP_LINK_DRAWTYPE_DASHED_LINE) {
		if (function_exists('imagesetstyle')) {
			// use imagesetstyle + imageline instead of bugged ImageDashedLine
			$style = array(
				$color, $color, $color, $color,
				IMG_COLOR_TRANSPARENT, IMG_COLOR_TRANSPARENT, IMG_COLOR_TRANSPARENT, IMG_COLOR_TRANSPARENT
			);
			imagesetstyle($image, $style);
			zbx_imageline($image, $x1, $y1, $x2, $y2, IMG_COLOR_STYLED);
		}
		else {
			imagedashedline($image, $x1, $y1, $x2, $y2, $color);
		}
	}
	elseif ($drawtype == MAP_LINK_DRAWTYPE_DOT && function_exists('imagesetstyle')) {
		$style = array($color, IMG_COLOR_TRANSPARENT, IMG_COLOR_TRANSPARENT, IMG_COLOR_TRANSPARENT);
		imagesetstyle($image, $style);
		zbx_imageline($image, $x1, $y1, $x2, $y2, IMG_COLOR_STYLED);
	}
	else {
		zbx_imagealine($image, $x1, $y1, $x2, $y2, $color);
	}
}

function get_png_by_selement($info) {
	$image = get_image_by_imageid($info['iconid']);
	if (!$image) {
		return get_default_image();
	}
	return imagecreatefromstring($image['image']);
}

function convertColor($im, $color) {
	$RGB = array(
		hexdec('0x'.substr($color, 0, 2)),
		hexdec('0x'.substr($color, 2, 2)),
		hexdec('0x'.substr($color, 4, 2))
	);
	return imagecolorallocate($im, $RGB[0], $RGB[1], $RGB[2]);
}

/**
 * Resolve all kinds of macros in map labels
 *
 * @param array $selement
 * @param string $selement['label'] label to expand
 * @param int $selement['elementtype'] type of element: trigger, host, ...
 * @param int $selement['elementid'] element id in DB
 * @param string $selement['elementExpressionTrigger'] if type is trigger, then trigger expression
 *
 * @return string expanded label
 */
function resolveMapLabelMacrosAll(array $selement) {
	$label = $selement['label'];
	// for host and trigger items expand macros if they exists
	if (($selement['elementtype'] == SYSMAP_ELEMENT_TYPE_HOST
			|| $selement['elementtype'] == SYSMAP_ELEMENT_TYPE_TRIGGER)
			&& (zbx_strpos($label, 'HOST.NAME') !== false
					|| zbx_strpos($label, 'HOSTNAME') !== false /* deprecated */
					|| zbx_strpos($label, 'HOST.HOST') !== false
					|| zbx_strpos($label, 'HOST.DNS') !== false
					|| zbx_strpos($label, 'HOST.IP') !== false
					|| zbx_strpos($label, 'IPADDRESS') !== false /* deprecated */
					|| zbx_strpos($label, 'HOST.CONN') !== false)) {

		// priorities of interface types doesn't match interface type ids in DB
		$priorities = array(
			INTERFACE_TYPE_AGENT => 4,
			INTERFACE_TYPE_SNMP => 3,
			INTERFACE_TYPE_JMX => 2,
			INTERFACE_TYPE_IPMI => 1
		);

		// get host data if element is host
		if ($selement['elementtype'] == SYSMAP_ELEMENT_TYPE_HOST) {
			$res = DBselect('SELECT hi.ip,hi.dns,hi.useip,h.host,h.name,hi.type AS interfacetype'.
					' FROM interface hi,hosts h'.
					' WHERE hi.hostid=h.hostid'.
						' AND hi.main=1 AND hi.hostid='.zbx_dbstr($selement['elementid']));

			// process interface priorities
			$tmpPriority = 0;
			while ($dbHost = DBfetch($res)) {
				if  ($priorities[$dbHost['interfacetype']] > $tmpPriority) {
					$resHost = $dbHost;
					$tmpPriority = $priorities[$dbHost['interfacetype']];
				}
			}

			$hostsByNr[''] = $resHost;
		}
		// get trigger host list if element is trigger
		else {
			$res = DBselect('SELECT hi.ip,hi.dns,hi.useip,h.host,h.name,f.functionid,hi.type AS interfacetype' .
					' FROM interface hi,items i,functions f,hosts h'.
					' WHERE h.hostid=hi.hostid'.
						' AND hi.hostid=i.hostid'.
						' AND i.itemid=f.itemid'.
						' AND hi.main=1 AND f.triggerid='.zbx_dbstr($selement['elementid']).
					' ORDER BY f.functionid');

			// process interface priorities, build $hostsByFunctionId array
			$tmpFunctionId = -1;
			while ($dbHost = DBfetch($res)) {
				if ($dbHost['functionid'] != $tmpFunctionId) {
					$tmpPriority = 0;
					$tmpFunctionId = $dbHost['functionid'];
				}
				if  ($priorities[$dbHost['interfacetype']] > $tmpPriority) {
					$hostsByFunctionId[$dbHost['functionid']] = $dbHost;
					$tmpPriority = $priorities[$dbHost['interfacetype']];
				}
			}

			// get all function ids from expression and link host data against position in expression
			preg_match_all('/\{([0-9]+)\}/', $selement['elementExpressionTrigger'], $matches);
			$hostsByNr = array();
			foreach ($matches[1] as $i => $functionid) {
				if (isset($hostsByFunctionId[$functionid])) {
					$hostsByNr[$i + 1] = $hostsByFunctionId[$functionid];
				}
			}

			// for macro without numeric index
			if (isset($hostsByNr[1])) {
				$hostsByNr[''] = $hostsByNr[1];
			}
		}

		// resolve functional macros like: {{HOST.HOST}:log[{HOST.HOST}.log].last(0)}
		$label = resolveMapLabelMacros($label, $hostsByNr);

		// resolves basic macros
		// $hostsByNr possible keys: '' and 1-9
		foreach ($hostsByNr as $i => $host) {
			$replace = array(
				'{HOST.NAME'.$i.'}' => $host['name'],
				'{HOSTNAME'.$i.'}' => $host['name'],
				'{HOST.HOST'.$i.'}' => $host['host'],
				'{HOST.DNS'.$i.'}' => $host['dns'],
				'{HOST.IP'.$i.'}' => $host['ip'],
				'{IPADDRESS'.$i.'}' => $host['ip'],
				'{HOST.CONN'.$i.'}' => $host['useip'] ? $host['ip'] : $host['dns'],
			);
			$label = str_replace(array_keys($replace), $replace, $label);
		}
	}
	else {
		// resolve functional macros like: {sampleHostName:log[{HOST.HOST}.log].last(0)}, if no host provided
		$label = resolveMapLabelMacros($label);
	}

	// resolve map specific processing consuming macros
	switch ($selement['elementtype']) {
		case SYSMAP_ELEMENT_TYPE_HOST:
		case SYSMAP_ELEMENT_TYPE_MAP:
		case SYSMAP_ELEMENT_TYPE_TRIGGER:
		case SYSMAP_ELEMENT_TYPE_HOST_GROUP:
			if (zbx_strpos($label, '{TRIGGERS.UNACK}') !== false) {
				$label = str_replace('{TRIGGERS.UNACK}', get_triggers_unacknowledged($selement), $label);
			}
			if (zbx_strpos($label, '{TRIGGERS.PROBLEM.UNACK}') !== false) {
				$label = str_replace('{TRIGGERS.PROBLEM.UNACK}', get_triggers_unacknowledged($selement, true), $label);
			}
			if (zbx_strpos($label, '{TRIGGER.EVENTS.UNACK}') !== false) {
				$label = str_replace('{TRIGGER.EVENTS.UNACK}', get_events_unacknowledged($selement), $label);
			}
			if (zbx_strpos($label, '{TRIGGER.EVENTS.PROBLEM.UNACK}') !== false) {
				$label = str_replace('{TRIGGER.EVENTS.PROBLEM.UNACK}', get_events_unacknowledged($selement, null, TRIGGER_VALUE_TRUE), $label);
			}
			if (zbx_strpos($label, '{TRIGGER.PROBLEM.EVENTS.PROBLEM.UNACK}') !== false) {
				$label = str_replace('{TRIGGER.PROBLEM.EVENTS.PROBLEM.UNACK}', get_events_unacknowledged($selement, TRIGGER_VALUE_TRUE, TRIGGER_VALUE_TRUE), $label);
			}
			if (zbx_strpos($label, '{TRIGGERS.ACK}') !== false) {
				$label = str_replace('{TRIGGERS.ACK}', get_triggers_unacknowledged($selement, null, true), $label);
			}
			if (zbx_strpos($label, '{TRIGGERS.PROBLEM.ACK}') !== false) {
				$label = str_replace('{TRIGGERS.PROBLEM.ACK}', get_triggers_unacknowledged($selement, true, true), $label);
			}
			if (zbx_strpos($label, '{TRIGGER.EVENTS.ACK}') !== false) {
				$label = str_replace('{TRIGGER.EVENTS.ACK}', get_events_unacknowledged($selement, null, null, true), $label);
			}
			if (zbx_strpos($label, '{TRIGGER.EVENTS.PROBLEM.ACK}') !== false) {
				$label = str_replace('{TRIGGER.EVENTS.PROBLEM.ACK}', get_events_unacknowledged($selement, null, TRIGGER_VALUE_TRUE, true), $label);
			}
			if (zbx_strpos($label, '{TRIGGER.PROBLEM.EVENTS.PROBLEM.ACK}') !== false) {
				$label = str_replace('{TRIGGER.PROBLEM.EVENTS.PROBLEM.ACK}', get_events_unacknowledged($selement, TRIGGER_VALUE_TRUE, TRIGGER_VALUE_TRUE, true), $label);
			}
			break;
	}

	return $label;
}

/**
 * Expand functional macros in given map label.
 *
 * @param string $label label to expand
 * @param array $replaceHosts list of hosts in order which they appear in trigger expression if trigger label is given,
 * or single host when host label is given
 *
 * @return string expanded label
 */
function resolveMapLabelMacros($label, $replaceHosts = null) {
	$functionsPattern = '(last|max|min|avg)\(([0-9]+['.ZBX_TIME_SUFFIXES.']?)?\)';

	// find functional macro pattern
	$pattern = (null === $replaceHosts)
		? '/{'.ZBX_PREG_HOST_FORMAT.':.+\.'.$functionsPattern.'}/Uu'
		: '/{('.ZBX_PREG_HOST_FORMAT.'|{HOSTNAME[0-9]?}|{HOST\.HOST[0-9]?}):.+\.'.$functionsPattern.'}/Uu';

	preg_match_all($pattern, $label, $matches);

	// for each functional macro
	foreach ($matches[0] as $expr) {
		$macro = $expr;
		if ($replaceHosts !== null) {
			// search for macros with all possible indecies
			foreach ($replaceHosts as $i => $host) {
				$macroTmp = $macro;
				// repalce only macro in first position
				$macro = preg_replace('/{({HOSTNAME'.$i.'}|{HOST\.HOST'.$i.'}):(.*)}/U', '{'.$host['host'].':$2}', $macro);
				// only one simple macro possible inside functional macro
				if ($macro != $macroTmp) {
					break;
				}
			}
		}

		// try to create valid expression
		$expressionData = new CTriggerExpression();
		if (!$expressionData->parse($macro) || !isset($expressionData->expressions[0])) {
			continue;
		}

		// look in DB for coressponding item
		$itemHost = $expressionData->expressions[0]['host'];
		$key = $expressionData->expressions[0]['item'];
		$function = $expressionData->expressions[0]['functionName'];

		$item = API::Item()->get(array(
			'webitems' => true,
			'filter' => array(
				'host' => $itemHost,
				'key_' => $key
			),
			'output' => array('itemid', 'lastclock', 'value_type', 'lastvalue', 'units', 'valuemapid')
		));

		$item = reset($item);

		// if no corresponding item found with functional macro key and host
		if (!$item) {
			$label = str_replace($expr, UNRESOLVED_MACRO_STRING, $label);
			continue;
		}

		// do function type (last, min, max, avg) related actions
		if ($function == 'last') {
			$value = ($item['lastclock']) ? formatHistoryValue($item['lastvalue'], $item) : UNRESOLVED_MACRO_STRING;
		}
		else {
			$value = getItemFunctionalValue($item, $function, $expressionData->expressions[0]['functionParamList'][0]);
		}

		if (isset($value)) {
			$label = str_replace($expr, $value, $label);
		}
	}

	return $label;
}

function get_map_elements($db_element, &$elements) {
	switch ($db_element['elementtype']) {
		case SYSMAP_ELEMENT_TYPE_HOST_GROUP:
			$elements['hosts_groups'][] = $db_element['elementid'];
			break;
		case SYSMAP_ELEMENT_TYPE_HOST:
			$elements['hosts'][] = $db_element['elementid'];
			break;
		case SYSMAP_ELEMENT_TYPE_TRIGGER:
			$elements['triggers'][] = $db_element['elementid'];
			break;
		case SYSMAP_ELEMENT_TYPE_MAP:
			$db_mapselements = DBselect(
				'SELECT DISTINCT se.elementtype,se.elementid'.
				' FROM sysmaps_elements se'.
				' WHERE se.sysmapid='.zbx_dbstr($db_element['elementid'])
			);
			while ($db_mapelement = DBfetch($db_mapselements)) {
				get_map_elements($db_mapelement, $elements);
			}
			break;
	}
}

/**
 * Adds names to elements. Adds expression for SYSMAP_ELEMENT_TYPE_TRIGGER elements.
 *
 * @param type $selements
 */
function add_elementNames(&$selements) {
	$hostids = array();
	$triggerids = array();
	$mapids = array();
	$hostgroupids = array();
	$imageids = array();

	foreach ($selements as $selement) {
		switch ($selement['elementtype']) {
			case SYSMAP_ELEMENT_TYPE_HOST:
				$hostids[$selement['elementid']] = $selement['elementid'];
				break;
			case SYSMAP_ELEMENT_TYPE_MAP:
				$mapids[$selement['elementid']] = $selement['elementid'];
				break;
			case SYSMAP_ELEMENT_TYPE_TRIGGER:
				$triggerids[$selement['elementid']] = $selement['elementid'];
				break;
			case SYSMAP_ELEMENT_TYPE_HOST_GROUP:
				$hostgroupids[$selement['elementid']] = $selement['elementid'];
				break;
			case SYSMAP_ELEMENT_TYPE_IMAGE:
				$imageids[$selement['iconid_off']] = $selement['iconid_off'];
				break;
		}
	}

	$hosts = API::Host()->get(array(
		'hostids' => $hostids,
		'output' => array('name'),
		'nopermissions' => true,
		'nodeids' => get_current_nodeid(true),
		'preservekeys' => true
	));

	$maps = API::Map()->get(array(
		'mapids' => $mapids,
		'output' => array('name'),
		'nopermissions' => true,
		'nodeids' => get_current_nodeid(true),
		'preservekeys' => true
	));

	$triggers = API::Trigger()->get(array(
		'triggerids' => $triggerids,
		'output' => API_OUTPUT_EXTEND,
		'selectHosts' => array('hostid', 'name'),
		'nopermissions' => true,
		'nodeids' => get_current_nodeid(true),
		'preservekeys' => true
	));

	$hostgroups = API::HostGroup()->get(array(
		'hostgroupids' => $hostgroupids,
		'output' => array('name'),
		'nopermissions' => true,
		'nodeids' => get_current_nodeid(true),
		'preservekeys' => true
	));

	$images = API::image()->get(array(
		'imageids' => $imageids,
		'output' => API_OUTPUT_EXTEND,
		'nopermissions' => true,
		'nodeids' => get_current_nodeid(true),
		'preservekeys' => true
	));

	foreach ($selements as $snum => $selement) {
		switch ($selement['elementtype']) {
			case SYSMAP_ELEMENT_TYPE_HOST:
				$selements[$snum]['elementName'] = $hosts[$selement['elementid']]['name'];
				break;
			case SYSMAP_ELEMENT_TYPE_MAP:
				$selements[$snum]['elementName'] = $maps[$selement['elementid']]['name'];
				break;
			case SYSMAP_ELEMENT_TYPE_TRIGGER:
				$hostname = reset($triggers[$selement['elementid']]['hosts']);
				$selements[$snum]['elementName'] = $hostname['name'].NAME_DELIMITER.
					CMacrosResolverHelper::resolveTriggerName($triggers[$selement['elementid']]);
				break;
			case SYSMAP_ELEMENT_TYPE_HOST_GROUP:
				$selements[$snum]['elementName'] = $hostgroups[$selement['elementid']]['name'];
				break;
			case SYSMAP_ELEMENT_TYPE_IMAGE:
				$selements[$snum]['elementName'] = $images[$selement['iconid_off']]['name'];
				break;
		}
	}

	if (!empty($triggers)) {
		add_triggerExpressions($selements, $triggers);
	}
}

function add_triggerExpressions(&$selements, $triggers = array()) {
	if (empty($triggers)) {
		$triggerIds = array();

		foreach ($selements as $selement) {
			if ($selement['elementtype'] == SYSMAP_ELEMENT_TYPE_TRIGGER) {
				$triggerIds[] = $selement['elementid'];
			}
		}

		$triggers = API::Trigger()->get(array(
			'triggerids' => $triggerIds,
			'output' => API_OUTPUT_EXTEND,
			'selectHosts' => array('name'),
			'nopermissions' => true,
			'nodeids' => get_current_nodeid(true),
			'preservekeys' => true
		));
	}

	foreach ($selements as $snum => $selement) {
		if ($selement['elementtype'] == SYSMAP_ELEMENT_TYPE_TRIGGER) {
			$selements[$snum]['elementExpressionTrigger'] = $triggers[$selement['elementid']]['expression'];
		}
	}
}

/**
 * Returns trigger element icon rendering parameters.
 *
 * @param $selement
 * @param $i
 * @param $showUnack    map "problem display" parameter
 *
 * @return array
 */
function getTriggersInfo($selement, $i, $showUnack) {
	global $colors;

	$info = array(
		'latelyChanged' => $i['latelyChanged'],
		'ack' => $i['ack'],
		'priority' => $i['priority'],
		'info' => array(),
		'iconid' => $selement['iconid_off']
	);

	if ($i['problem'] && ($i['problem_unack'] && $showUnack == EXTACK_OPTION_UNACK
			|| in_array($showUnack, array(EXTACK_OPTION_ALL, EXTACK_OPTION_BOTH)))) {
		$info['iconid'] = $selement['iconid_on'];
		$info['icon_type'] = SYSMAP_ELEMENT_ICON_ON;
		$info['info']['unack'] = array(
			'msg' => _('PROBLEM'),
			'color' => ($i['priority'] > 3) ? $colors['Red'] : $colors['Dark Red']
		);
	}
	elseif ($i['trigger_disabled']) {
		$info['iconid'] = $selement['iconid_disabled'];
		$info['icon_type'] = SYSMAP_ELEMENT_ICON_DISABLED;
		$info['info']['status'] = array(
			'msg' => _('DISABLED'),
			'color' => $colors['Dark Red']
		);
	}
	else {
		$info['iconid'] = $selement['iconid_off'];
		$info['icon_type'] = SYSMAP_ELEMENT_ICON_OFF;
		$info['info']['ok'] = array(
			'msg' => _('OK'),
			'color' => $colors['Dark Green']
		);
	}

	return $info;
}

/**
 * Returns host element icon rendering parameters.
 *
 * @param $selement
 * @param $i
 * @param $show_unack    map "problem display" parameter
 *
 * @return array
 */
function getHostsInfo($selement, $i, $show_unack) {
	global $colors;

	$info = array(
		'latelyChanged' => $i['latelyChanged'],
		'ack' => $i['ack'],
		'priority' => $i['priority'],
		'info' => array(),
		'iconid' => $selement['iconid_off']
	);
	$hasProblem = false;

	if ($i['problem']) {
		if (in_array($show_unack, array(EXTACK_OPTION_ALL, EXTACK_OPTION_BOTH))) {
			if ($i['problem'] > 1) {
				$msg = $i['problem'].' '._('Problems');
			}
			elseif (isset($i['problem_title'])) {
				$msg = $i['problem_title'];
			}
			else {
				$msg = '1 '._('Problem');
			}

			$info['info']['problem'] = array(
				'msg' => $msg,
				'color' => ($i['priority'] > 3) ? $colors['Red'] : $colors['Dark Red']
			);
		}

		if (in_array($show_unack, array(EXTACK_OPTION_UNACK, EXTACK_OPTION_BOTH)) && $i['problem_unack']) {
			$info['info']['unack'] = array(
				'msg' => $i['problem_unack'].' '._('Unacknowledged'),
				'color' => $colors['Dark Red']
			);
		}

		// set element to problem state if it has problem events
		if ($info['info']) {
			$info['iconid'] = $selement['iconid_on'];
			$info['icon_type'] = SYSMAP_ELEMENT_ICON_ON;
			$hasProblem = true;
		}
	}

	if ($i['maintenance']) {
		$info['iconid'] = $selement['iconid_maintenance'];
		$info['icon_type'] = SYSMAP_ELEMENT_ICON_MAINTENANCE;
		$info['info']['maintenance'] = array(
			'msg' => _('MAINTENANCE').' ('.$i['maintenance_title'].')',
			'color' => $colors['Orange']
		);
	}
	elseif ($i['disabled']) {
		$info['iconid'] = $selement['iconid_disabled'];
		$info['icon_type'] = SYSMAP_ELEMENT_ICON_DISABLED;
		$info['info']['status'] = array(
			'msg' => _('DISABLED'),
			'color' => $colors['Dark Red']
		);
	}
	elseif (!$hasProblem) {
		$info['iconid'] = $selement['iconid_off'];
		$info['icon_type'] = SYSMAP_ELEMENT_ICON_OFF;
		$info['info']['ok'] = array(
			'msg' => _('OK'),
			'color' => $colors['Dark Green']
		);
	}

	return $info;
}

/**
 * Returns host groups element icon rendering parameters.
 *
 * @param $selement
 * @param $i
 * @param $show_unack    map "problem display" parameter
 *
 * @return array
 */
function getHostGroupsInfo($selement, $i, $show_unack) {
	global $colors;

	$info = array(
		'latelyChanged' => $i['latelyChanged'],
		'ack' => $i['ack'],
		'priority' => $i['priority'],
		'info' => array(),
		'iconid' => $selement['iconid_off']
	);
	$hasProblem = false;
	$hasStatus = false;

	if ($i['problem']) {
		if (in_array($show_unack, array(EXTACK_OPTION_ALL, EXTACK_OPTION_BOTH))) {
			if ($i['problem'] > 1) {
				$msg = $i['problem'].' '._('Problems');
			}
			elseif (isset($i['problem_title'])) {
				$msg = $i['problem_title'];
			}
			else {
				$msg = '1 '._('Problem');
			}

			$info['info']['problem'] = array(
				'msg' => $msg,
				'color' => ($i['priority'] > 3) ? $colors['Red'] : $colors['Dark Red']
			);
		}

		if (in_array($show_unack, array(EXTACK_OPTION_UNACK, EXTACK_OPTION_BOTH)) && $i['problem_unack']) {
			$info['info']['unack'] = array(
				'msg' => $i['problem_unack'].' '._('Unacknowledged'),
				'color' => $colors['Dark Red']
			);
		}

		// set element to problem state if it has problem events
		if ($info['info']) {
			$info['iconid'] = $selement['iconid_on'];
			$info['icon_type'] = SYSMAP_ELEMENT_ICON_ON;
			$hasProblem = true;
		}
	}

	if ($i['maintenance']) {
		if (!$hasProblem) {
			$info['iconid'] = $selement['iconid_maintenance'];
			$info['icon_type'] = SYSMAP_ELEMENT_ICON_MAINTENANCE;
		}
		$info['info']['maintenance'] = array(
			'msg' => $i['maintenance'].' '._('Maintenance'),
			'color' => $colors['Orange']
		);
		$hasStatus = true;
	}
	elseif ($i['disabled']) {
		if (!$hasProblem) {
			$info['icon_type'] = SYSMAP_ELEMENT_ICON_DISABLED;
			$info['iconid'] = $selement['iconid_disabled'];
		}
		$info['info']['disabled'] = array(
			'msg' => _('DISABLED'),
			'color' => $colors['Dark Red']
		);
		$hasStatus = true;
	}

	if (!$hasStatus && !$hasProblem) {
		$info['icon_type'] = SYSMAP_ELEMENT_ICON_OFF;
		$info['iconid'] = $selement['iconid_off'];
		$info['info']['ok'] = array(
			'msg' => _('OK'),
			'color' => $colors['Dark Green']
		);
	}

	return $info;
}

/**
 * Returns maps groups element icon rendering parameters.
 *
 * @param $selement
 * @param $i
 * @param $show_unack    map "problem display" parameter
 *
 * @return array
 */
function getMapsInfo($selement, $i, $show_unack) {
	global $colors;

	$info = array(
		'latelyChanged' => $i['latelyChanged'],
		'ack' => $i['ack'],
		'priority' => $i['priority'],
		'info' => array(),
		'iconid' => $selement['iconid_off']
	);

	$hasProblem = false;
	$hasStatus = false;

	if ($i['problem']) {
		if (in_array($show_unack, array(EXTACK_OPTION_ALL, EXTACK_OPTION_BOTH))) {
			if ($i['problem'] > 1) {
				$msg = $i['problem'].' '._('Problems');
			}
			elseif (isset($i['problem_title'])) {
				$msg = $i['problem_title'];
			}
			else {
				$msg = '1 '._('Problem');
			}

			$info['info']['problem'] = array(
				'msg' => $msg,
				'color' => ($i['priority'] > 3) ? $colors['Red'] : $colors['Dark Red']
			);
		}

		if (in_array($show_unack, array(EXTACK_OPTION_UNACK, EXTACK_OPTION_BOTH)) && $i['problem_unack']) {
			$info['info']['unack'] = array(
				'msg' => $i['problem_unack'].' '._('Unacknowledged'),
				'color' => $colors['Dark Red']
			);
		}

		if ($info['info']) {
			$info['iconid'] = $selement['iconid_on'];
			$info['icon_type'] = SYSMAP_ELEMENT_ICON_ON;
			$hasProblem = true;
		}
	}

	if ($i['maintenance']) {
		if (!$hasProblem) {
			$info['iconid'] = $selement['iconid_maintenance'];
			$info['icon_type'] = SYSMAP_ELEMENT_ICON_MAINTENANCE;
		}
		$info['info']['maintenance'] = array(
			'msg' => $i['maintenance'].' '._('Maintenance'),
			'color' => $colors['Orange']
		);
		$hasStatus = true;
	}
	elseif ($i['disabled']) {
		if (!$hasProblem) {
			$info['icon_type'] = SYSMAP_ELEMENT_ICON_DISABLED;
			$info['iconid'] = $selement['iconid_disabled'];
		}
		$info['info']['disabled'] = array(
			'msg' => _('DISABLED'),
			'color' => $colors['Dark Red']
		);
		$hasStatus = true;
	}

	if (!$hasStatus && !$hasProblem) {
		$info['icon_type'] = SYSMAP_ELEMENT_ICON_OFF;
		$info['iconid'] = $selement['iconid_off'];
		$info['info']['ok'] = array(
			'msg' => _('OK'),
			'color' => $colors['Dark Green']
		);
	}

	return $info;
}

function getImagesInfo($selement) {
	return array(
		'iconid' => $selement['iconid_off'],
		'icon_type' => SYSMAP_ELEMENT_ICON_OFF,
		'name' => _('Image'),
		'latelyChanged' => false
	);
}

/**
 * Prepare map elements data.
 * Calculate problem triggers and priorities. Populate map elements with automatic icon mapping, acknowledging and
 * recent change markers.
 *
 * @param array $sysmap
 * @param int   $options
 * @param int   $options['severity_min'] Minimum trigger severity, default value is maximal (Disaster)
 *
 * @return array
 */
function getSelementsInfo($sysmap, array $options = array()) {
	if (!isset($options['severity_min'])) {
		$options['severity_min'] = TRIGGER_SEVERITY_NOT_CLASSIFIED;
	}

	$config = select_config();
	$show_unack = $config['event_ack_enable'] ? $sysmap['show_unack'] : EXTACK_OPTION_ALL;

	$triggers_map = array();
	$triggers_map_submaps = array();
	$hostgroups_map = array();
	$hosts_map = array();

	if ($sysmap['sysmapid']) {
		$iconMap = API::IconMap()->get(array(
			'sysmapids' => $sysmap['sysmapid'],
			'selectMappings' => API_OUTPUT_EXTEND,
			'output' => API_OUTPUT_EXTEND
		));
		$iconMap = reset($iconMap);

		$hostsToGetInventories = array();
	}

	$selements = $sysmap['selements'];
	foreach ($selements as $selementId => $selement) {
		$selements[$selementId]['hosts'] = array();
		$selements[$selementId]['triggers'] = array();

		switch ($selement['elementtype']) {
			case SYSMAP_ELEMENT_TYPE_MAP:
				$mapids = array($selement['elementid']);

				while (!empty($mapids)) {
					$maps = API::Map()->get(array(
						'sysmapids' => $mapids,
						'output' => API_OUTPUT_REFER,
						'selectSelements' => API_OUTPUT_EXTEND,
						'nopermissions' => true,
						'nodeids' => get_current_nodeid(true)
					));

					$mapids = array();
					foreach ($maps as $map) {
						foreach ($map['selements'] as $sel) {
							switch ($sel['elementtype']) {
								case SYSMAP_ELEMENT_TYPE_MAP:
									$mapids[] = $sel['elementid'];
									break;
								case SYSMAP_ELEMENT_TYPE_HOST_GROUP:
									$hostgroups_map[$sel['elementid']][$selementId] = $selementId;
									break;
								case SYSMAP_ELEMENT_TYPE_HOST:
									$hosts_map[$sel['elementid']][$selementId] = $selementId;
									break;
								case SYSMAP_ELEMENT_TYPE_TRIGGER:
									$triggers_map_submaps[$sel['elementid']][$selementId] = $selementId;
									break;
							}
						}
					}
				}
				break;
			case SYSMAP_ELEMENT_TYPE_HOST_GROUP:
				$hostgroups_map[$selement['elementid']][$selement['selementid']] = $selement['selementid'];
				break;
			case SYSMAP_ELEMENT_TYPE_HOST:
				$hosts_map[$selement['elementid']][$selement['selementid']] = $selement['selementid'];

				// if we have icon map applied, we need to get inventories for all hosts,
				// where automatic icon selection is enabled.
				if ($sysmap['iconmapid'] && $selement['use_iconmap']) {
					$hostsToGetInventories[] = $selement['elementid'];
				}
				break;
			case SYSMAP_ELEMENT_TYPE_TRIGGER:
				$triggers_map[$selement['elementid']][$selement['selementid']] = $selement['selementid'];
				break;
		}
	}

	// get host inventories
	if ($sysmap['iconmapid']) {
		$hostInventories = API::Host()->get(array(
			'hostids' => $hostsToGetInventories,
			'output' => array('hostid'),
			'nopermissions' => true,
			'preservekeys' => true,
			'selectInventory' => API_OUTPUT_EXTEND
		));
	}

	$all_hosts = array();
	if (!empty($hosts_map)) {
		$hosts = API::Host()->get(array(
			'hostids' => array_keys($hosts_map),
			'output' => array('name', 'status', 'maintenance_status', 'maintenanceid'),
			'nopermissions' => true,
			'nodeids' => get_current_nodeid(true)
		));
		$all_hosts = array_merge($all_hosts, $hosts);
		foreach ($hosts as $host) {
			foreach ($hosts_map[$host['hostid']] as $belongs_to_sel) {
				$selements[$belongs_to_sel]['hosts'][$host['hostid']] = $host['hostid'];
			}
		}
	}

	if (!empty($hostgroups_map)) {
		$hosts = API::Host()->get(array(
			'groupids' => array_keys($hostgroups_map),
			'output' => array('name', 'status', 'maintenance_status', 'maintenanceid'),
			'selectGroups' => array('groupid'),
			'nopermissions' => true,
			'nodeids' => get_current_nodeid(true)
		));
		$all_hosts = array_merge($all_hosts, $hosts);
		foreach ($hosts as $host) {
			foreach ($host['groups'] as $group) {
				if (isset($hostgroups_map[$group['groupid']])) {
					foreach ($hostgroups_map[$group['groupid']] as $belongs_to_sel) {
						$selements[$belongs_to_sel]['hosts'][$host['hostid']] = $host['hostid'];

						// add hosts to hosts_map for trigger selection;
						if (!isset($hosts_map[$host['hostid']])) {
							$hosts_map[$host['hostid']] = array();
						}
						$hosts_map[$host['hostid']][$belongs_to_sel] = $belongs_to_sel;
					}
				}
			}
		}
	}
	$all_hosts = zbx_toHash($all_hosts, 'hostid');

	$monitored_hostids = array();
	foreach ($all_hosts as $hostid => $host) {
		if ($host['status'] == HOST_STATUS_MONITORED) {
			$monitored_hostids[$hostid] = $hostid;
		}
	}

	// get triggers data, triggers from current map, select all
	$all_triggers = array();

	if (!empty($triggers_map)) {
		$triggers = API::Trigger()->get(array(
			'nodeids' => get_current_nodeid(true),
			'triggerids' => array_keys($triggers_map),
			'filter' => array('state' => null),
			'output' => API_OUTPUT_EXTEND,
			'nopermissions' => true
		));
		$all_triggers = array_merge($all_triggers, $triggers);

		foreach ($triggers as $trigger) {
			foreach ($triggers_map[$trigger['triggerid']] as $belongs_to_sel) {
				$selements[$belongs_to_sel]['triggers'][$trigger['triggerid']] = $trigger['triggerid'];
			}
		}
	}

	// triggers from submaps, skip dependent
	if (!empty($triggers_map_submaps)) {
		$triggers = API::Trigger()->get(array(
			'nodeids' => get_current_nodeid(true),
			'triggerids' => array_keys($triggers_map_submaps),
			'filter' => array('state' => null),
			'skipDependent' => true,
			'output' => API_OUTPUT_EXTEND,
			'nopermissions' => true
		));
		$all_triggers = array_merge($all_triggers, $triggers);

		foreach ($triggers as $trigger) {
			foreach ($triggers_map_submaps[$trigger['triggerid']] as $belongs_to_sel) {
				$selements[$belongs_to_sel]['triggers'][$trigger['triggerid']] = $trigger['triggerid'];
			}
		}
	}

	// triggers from all hosts/hostgroups, skip dependent
	if (!empty($monitored_hostids)) {
		$triggers = API::Trigger()->get(array(
			'hostids' => $monitored_hostids,
			'output' => array('status', 'value', 'priority', 'lastchange', 'description', 'expression'),
			'selectHosts' => array('hostid'),
			'nopermissions' => true,
			'filter' => array('state' => null),
			'nodeids' => get_current_nodeid(true),
			'monitored' => true,
			'skipDependent' => true
		));
		$all_triggers = array_merge($all_triggers, $triggers);

		foreach ($triggers as $trigger) {
			foreach ($trigger['hosts'] as $host) {
				if (isset($hosts_map[$host['hostid']])) {
					foreach ($hosts_map[$host['hostid']] as $belongs_to_sel) {
						$selements[$belongs_to_sel]['triggers'][$trigger['triggerid']] = $trigger['triggerid'];
					}
				}
			}
		}
	}
	$all_triggers = zbx_toHash($all_triggers, 'triggerid');

	$unackTriggerIds = API::Trigger()->get(array(
		'triggerids' => array_keys($all_triggers),
		'withLastEventUnacknowledged' => true,
		'output' => array('triggerid'),
		'nodeids' => get_current_nodeid(true),
		'nopermissions' => true,
		'monitored' => true,
		'filter' => array('value' => TRIGGER_VALUE_TRUE, 'state' => null)
	));
	$unackTriggerIds = zbx_toHash($unackTriggerIds, 'triggerid');

	$info = array();
	foreach ($selements as $selementId => $selement) {
		$i = array(
			'disabled' => 0,
			'maintenance' => 0,
			'problem' => 0,
			'problem_unack' => 0,
			'priority' => 0,
			'trigger_disabled' => 0,
			'latelyChanged' => false,
			'ack' => true
		);

		foreach ($selement['hosts'] as $hostid) {
			$host = $all_hosts[$hostid];
			$last_hostid = $hostid;

			if ($host['status'] == HOST_STATUS_NOT_MONITORED) {
				$i['disabled']++;
			}
			elseif ($host['maintenance_status'] == HOST_MAINTENANCE_STATUS_ON) {
				$i['maintenance']++;
			}
		}

		foreach ($selement['triggers'] as $triggerId) {
			$trigger = $all_triggers[$triggerId];

			if ($options['severity_min'] <= $trigger['priority']) {
				if ($trigger['status'] == TRIGGER_STATUS_DISABLED) {
					$i['trigger_disabled']++;
				}
				else {
					if ($trigger['value'] == TRIGGER_VALUE_TRUE) {
						$i['problem']++;
						$lastProblemId = $triggerId;

						if ($i['priority'] < $trigger['priority']) {
							$i['priority'] = $trigger['priority'];
						}
					}

					if (isset($unackTriggerIds[$triggerId])) {
						$i['problem_unack']++;
					}

					$config = select_config();

					$i['latelyChanged'] |= ((time() - $trigger['lastchange']) < $config['blink_period']);
				}
			}
		}

		$i['ack'] = (bool) !($i['problem_unack']);

		if ($sysmap['expandproblem'] && $i['problem'] == 1) {
			if (!isset($lastProblemId)) {
				$lastProblemId = null;
			}

			$i['problem_title'] = CMacrosResolverHelper::resolveTriggerName($all_triggers[$lastProblemId]);
		}

		if ($selement['elementtype'] == SYSMAP_ELEMENT_TYPE_HOST && $i['maintenance'] == 1) {
			$mnt = get_maintenance_by_maintenanceid($all_hosts[$last_hostid]['maintenanceid']);
			$i['maintenance_title'] = $mnt['name'];
		}

		// replace default icons
		if (!$selement['iconid_on']) {
			$selement['iconid_on'] = $selement['iconid_off'];
		}
		if (!$selement['iconid_maintenance']) {
			$selement['iconid_maintenance'] = $selement['iconid_off'];
		}
		if (!$selement['iconid_disabled']) {
			$selement['iconid_disabled'] = $selement['iconid_off'];
		}

		switch ($selement['elementtype']) {
			case SYSMAP_ELEMENT_TYPE_MAP:
				$info[$selementId] = getMapsInfo($selement, $i, $show_unack);
				break;

			case SYSMAP_ELEMENT_TYPE_HOST_GROUP:
				$info[$selementId] = getHostGroupsInfo($selement, $i, $show_unack);
				break;

			case SYSMAP_ELEMENT_TYPE_HOST:
				$info[$selementId] = getHostsInfo($selement, $i, $show_unack);
				if ($sysmap['iconmapid'] && $selement['use_iconmap']) {
					$info[$selementId]['iconid'] = getIconByMapping($iconMap, $hostInventories[$selement['elementid']]);
				}
				break;

			case SYSMAP_ELEMENT_TYPE_TRIGGER:
				$info[$selementId] = getTriggersInfo($selement, $i, $show_unack);
				break;

			case SYSMAP_ELEMENT_TYPE_IMAGE:
				$info[$selementId] = getImagesInfo($selement);
				break;
		}
	}

	if ($sysmap['label_format'] == SYSMAP_LABEL_ADVANCED_OFF) {
		$hlabel = $hglabel = $tlabel = $mlabel = ($sysmap['label_type'] == MAP_LABEL_TYPE_NAME);
	}
	else {
		$hlabel = ($sysmap['label_type_host'] == MAP_LABEL_TYPE_NAME);
		$hglabel = ($sysmap['label_type_hostgroup'] == MAP_LABEL_TYPE_NAME);
		$tlabel = ($sysmap['label_type_trigger'] == MAP_LABEL_TYPE_NAME);
		$mlabel = ($sysmap['label_type_map'] == MAP_LABEL_TYPE_NAME);
	}

	// get names if needed
	$elems = separateMapElements($sysmap);
	if (!empty($elems['sysmaps']) && $mlabel) {
		$maps = API::Map()->get(array(
			'sysmapids' => zbx_objectValues($elems['sysmaps'], 'elementid'),
			'nopermissions' => true,
			'output' => array('name')
		));
		$maps = zbx_toHash($maps, 'sysmapid');

		foreach ($elems['sysmaps'] as $elem) {
			$info[$elem['selementid']]['name'] = $maps[$elem['elementid']]['name'];
		}
	}
	if (!empty($elems['hostgroups']) && $hglabel) {
		$hostgroups = API::HostGroup()->get(array(
			'groupids' => zbx_objectValues($elems['hostgroups'], 'elementid'),
			'nopermissions' => true,
			'output' => array('name')
		));
		$hostgroups = zbx_toHash($hostgroups, 'groupid');

		foreach ($elems['hostgroups'] as $elem) {
			$info[$elem['selementid']]['name'] = $hostgroups[$elem['elementid']]['name'];
		}
	}

	if (!empty($elems['triggers']) && $tlabel) {
		foreach ($elems['triggers'] as $elem) {
			$info[$elem['selementid']]['name'] = CMacrosResolverHelper::resolveTriggerName($all_triggers[$elem['elementid']]);
		}
	}
	if (!empty($elems['hosts']) && $hlabel) {
		foreach ($elems['hosts'] as $elem) {
			$info[$elem['selementid']]['name'] = $all_hosts[$elem['elementid']]['name'];
		}
	}

	return $info;
}

function separateMapElements($sysmap) {
	$elements = array(
		'sysmaps' => array(),
		'hostgroups' => array(),
		'hosts' => array(),
		'triggers' => array(),
		'images' => array()
	);

	foreach ($sysmap['selements'] as $selement) {
		switch ($selement['elementtype']) {
			case SYSMAP_ELEMENT_TYPE_MAP:
				$elements['sysmaps'][$selement['selementid']] = $selement;
				break;
			case SYSMAP_ELEMENT_TYPE_HOST_GROUP:
				$elements['hostgroups'][$selement['selementid']] = $selement;
				break;
			case SYSMAP_ELEMENT_TYPE_HOST:
				$elements['hosts'][$selement['selementid']] = $selement;
				break;
			case SYSMAP_ELEMENT_TYPE_TRIGGER:
				$elements['triggers'][$selement['selementid']] = $selement;
				break;
			case SYSMAP_ELEMENT_TYPE_IMAGE:
			default:
				$elements['images'][$selement['selementid']] = $selement;
		}
	}
	return $elements;
}

function drawMapConnectors(&$im, $map, $mapInfo, $drawAll = false) {
	$selements = $map['selements'];

	foreach ($map['links'] as $link) {
		$selement1 = $selements[$link['selementid1']];
		$selement2 = $selements[$link['selementid2']];

		list($x1, $y1) = get_icon_center_by_selement($selement1, $mapInfo[$link['selementid1']], $map);
		list($x2, $y2) = get_icon_center_by_selement($selement2, $mapInfo[$link['selementid2']], $map);

		if (isset($selement1['elementsubtype']) && $selement1['elementsubtype'] == SYSMAP_ELEMENT_AREA_TYPE_CUSTOM) {
			if (!$drawAll && ($selement2['elementsubtype'] != SYSMAP_ELEMENT_SUBTYPE_HOST_GROUP_ELEMENTS)) {
				continue;
			}

			if ($selement1['areatype'] == SYSMAP_ELEMENT_AREA_TYPE_CUSTOM) {
				$w = $selement1['width'];
				$h = $selement1['height'];
			}
			else {
				$w = $map['width'];
				$h = $map['height'];
			}
			list($x1, $y1) = calculateMapAreaLinkCoord($x1, $y1, $w, $h, $x2, $y2);
		}

		if (isset($selement2['elementsubtype']) && $selement2['elementsubtype'] == SYSMAP_ELEMENT_AREA_TYPE_CUSTOM) {
			if (!$drawAll && ($selement1['elementsubtype'] != SYSMAP_ELEMENT_SUBTYPE_HOST_GROUP_ELEMENTS)) {
				continue;
			}

			if ($selement2['areatype'] == SYSMAP_ELEMENT_AREA_TYPE_CUSTOM) {
				$w = $selement2['width'];
				$h = $selement2['height'];
			}
			else {
				$w = $map['width'];
				$h = $map['height'];
			}
			list($x2, $y2) = calculateMapAreaLinkCoord($x2, $y2, $w,$h, $x1, $y1);
		}

		$drawtype = $link['drawtype'];
		$color = convertColor($im, $link['color']);

		$linktriggers = $link['linktriggers'];
		order_result($linktriggers, 'triggerid');

		if (!empty($linktriggers)) {
			$max_severity = 0;

			$triggers = array();
			foreach ($linktriggers as $link_trigger) {
				if ($link_trigger['triggerid'] == 0) {
					continue;
				}

				$id = $link_trigger['linktriggerid'];

				$triggers[$id] = zbx_array_merge($link_trigger, get_trigger_by_triggerid($link_trigger['triggerid']));
				if ($triggers[$id]['status'] == TRIGGER_STATUS_ENABLED && $triggers[$id]['value'] == TRIGGER_VALUE_TRUE) {
					if ($triggers[$id]['priority'] >= $max_severity) {
						$drawtype = $triggers[$id]['drawtype'];
						$color = convertColor($im, $triggers[$id]['color']);
						$max_severity = $triggers[$id]['priority'];
					}
				}
			}
		}

		myDrawLine($im, $x1, $y1, $x2, $y2, $color, $drawtype);
	}
}

function drawMapSelements(&$im, $map, $mapInfo) {
	$selements = $map['selements'];

	foreach ($selements as $selementId => $selement) {
		if (isset($selement['elementsubtype']) && $selement['elementsubtype'] == SYSMAP_ELEMENT_SUBTYPE_HOST_GROUP_ELEMENTS) {
			continue;
		}

		$elementInfo = $mapInfo[$selementId];
		$img = get_png_by_selement($elementInfo);

		$iconX = imagesx($img);
		$iconY = imagesy($img);

		imagecopy($im, $img, $selement['x'], $selement['y'], 0, 0, $iconX, $iconY);
	}
}

function drawMapHighligts(&$im, $map, $mapInfo) {
	$selements = $map['selements'];

	foreach ($selements as $selementId => $selement) {
		if (isset($selement['elementsubtype']) && $selement['elementsubtype'] == SYSMAP_ELEMENT_SUBTYPE_HOST_GROUP_ELEMENTS) {
			continue;
		}

		$elementInfo = $mapInfo[$selementId];
		$img = get_png_by_selement($elementInfo);

		$iconX = imagesx($img);
		$iconY = imagesy($img);

		if (($map['highlight'] % 2) == SYSMAP_HIGHLIGHT_ON) {
			$hl_color = null;
			$st_color = null;

			if ($elementInfo['icon_type'] == SYSMAP_ELEMENT_ICON_ON) {
				$hl_color = hex2rgb(getSeverityColor($elementInfo['priority']));
			}

			if ($elementInfo['icon_type'] == SYSMAP_ELEMENT_ICON_MAINTENANCE) {
				$st_color = hex2rgb('FF9933');
			}
			if ($elementInfo['icon_type'] == SYSMAP_ELEMENT_ICON_DISABLED) {
				$st_color = hex2rgb('EEEEEE');
			}

			$mainProblems = array(
				SYSMAP_ELEMENT_TYPE_HOST_GROUP => 1,
				SYSMAP_ELEMENT_TYPE_MAP => 1
			);

			if (isset($mainProblems[$selement['elementtype']])) {
				if (!is_null($hl_color)) {
					$st_color = null;
				}
			}
			elseif (!is_null($st_color)) {
				$hl_color = null;
			}

			if (!is_null($st_color)) {
				$r = $st_color[0];
				$g = $st_color[1];
				$b = $st_color[2];

				imagefilledrectangle($im,
					$selement['x'] - 2,
					$selement['y'] - 2,
					$selement['x'] + $iconX + 2,
					$selement['y'] + $iconY + 2,
					imagecolorallocatealpha($im, $r, $g, $b, 0)
				);

				// shadow
				imagerectangle($im,
					$selement['x'] - 2 - 1,
					$selement['y'] - 2 - 1,
					$selement['x'] + $iconX + 2 + 1,
					$selement['y'] + $iconY + 2 + 1,
					imagecolorallocate($im, 120, 120, 120)
				);

				imagerectangle($im,
					$selement['x'] - 2 - 2,
					$selement['y'] - 2 - 2,
					$selement['x'] + $iconX + 2 + 2,
					$selement['y'] + $iconY + 2 + 2,
					imagecolorallocate($im, 220, 220, 220)
				);
			}

			if (!is_null($hl_color)) {
				$r = $hl_color[0];
				$g = $hl_color[1];
				$b = $hl_color[2];

				imagefilledellipse($im,
					$selement['x'] + ($iconX / 2),
					$selement['y'] + ($iconY / 2),
					$iconX + 20,
					$iconX + 20,
					imagecolorallocatealpha($im, $r, $g, $b, 0)
				);

				imageellipse($im,
					$selement['x'] + ($iconX / 2),
					$selement['y'] + ($iconY / 2),
					$iconX + 20 + 1,
					$iconX + 20 + 1,
					imagecolorallocate($im, 120, 120, 120)
				);

				$config = select_config();
				if (isset($elementInfo['ack']) && $elementInfo['ack'] && $config['event_ack_enable']) {
					imagesetthickness($im, 5);
					imagearc($im,
						$selement['x'] + ($iconX / 2),
						$selement['y'] + ($iconY / 2),
						$iconX + 20 - 3,
						$iconX + 20 - 3,
						0,
						359,
						imagecolorallocate($im, 50, 150, 50)
					);
					imagesetthickness($im, 1);
				}
			}
		}
	}
}

function drawMapSelementsMarks(&$im, $map, $mapInfo) {
	global $colors;

	$selements = $map['selements'];

	foreach ($selements as $selementId => $selement) {
		if (empty($selement)) {
			continue;
		}

		$elementInfo = $mapInfo[$selementId];
		if (!$elementInfo['latelyChanged']) {
			continue;
		}

		// skip host group element containers
		if ($selement['elementsubtype'] == SYSMAP_ELEMENT_SUBTYPE_HOST_GROUP_ELEMENTS) {
			continue;
		}

		$img = get_png_by_selement($elementInfo);

		$iconX = imagesx($img);
		$iconY = imagesy($img);

		$hl_color = null;
		$st_color = null;
		if (!isset($_REQUEST['noselements']) && (($map['highlight'] % 2) == SYSMAP_HIGHLIGHT_ON)) {
			if ($elementInfo['icon_type'] == SYSMAP_ELEMENT_ICON_ON) {
				$hl_color = true;
			}
			if ($elementInfo['icon_type'] == SYSMAP_ELEMENT_ICON_MAINTENANCE
					|| $elementInfo['icon_type'] == SYSMAP_ELEMENT_ICON_DISABLED) {
				$st_color = true;
			}
		}

		$mainProblems = array(
			SYSMAP_ELEMENT_TYPE_HOST_GROUP => 1,
			SYSMAP_ELEMENT_TYPE_MAP => 1
		);

		if (isset($mainProblems[$selement['elementtype']])) {
			if (!is_null($hl_color)) {
				$st_color = null;
			}
			elseif (!is_null($st_color)) {
				$hl_color = null;
			}
		}

		$markSize = $iconX / 2;
		if ($hl_color) {
			$markSize += 12;
		}
		elseif ($st_color) {
			$markSize += 8;
		}
		else {
			$markSize += 3;
		}

		if ($map['label_type'] != MAP_LABEL_TYPE_NOTHING) {
			$labelLocation = $selement['label_location'];
			if (is_null($labelLocation) || ($labelLocation < 0)) {
				$labelLocation = $map['label_location'];
			}

			switch ($labelLocation) {
				case MAP_LABEL_LOC_TOP:
					$marks = 'rbl';
					break;
				case MAP_LABEL_LOC_LEFT:
					$marks = 'trb';
					break;
				case MAP_LABEL_LOC_RIGHT:
					$marks = 'tbl';
					break;
				case MAP_LABEL_LOC_BOTTOM:
				default:
					$marks = 'trl';
			}
		}
		else {
			$marks = 'trbl';
		}

		imageVerticalMarks($im, $selement['x'] + ($iconX / 2), $selement['y'] + ($iconY / 2), $markSize, $colors['Red'], $marks);
	}
}

function drawMapLinkLabels(&$im, $map, $mapInfo, $resolveMacros = true) {
	global $colors;

	$links = $map['links'];
	$selements = $map['selements'];

	foreach ($links as $link) {
		if (empty($link['label'])) {
			continue;
		}

		$selement1 = $selements[$link['selementid1']];
		list($x1, $y1) = get_icon_center_by_selement($selement1, $mapInfo[$link['selementid1']], $map);

		$selement2 = $selements[$link['selementid2']];
		list($x2, $y2) = get_icon_center_by_selement($selement2, $mapInfo[$link['selementid2']], $map);

		if (isset($selement1['elementsubtype']) && $selement1['elementsubtype'] == SYSMAP_ELEMENT_AREA_TYPE_CUSTOM) {
			if ($selement1['areatype'] == SYSMAP_ELEMENT_AREA_TYPE_CUSTOM) {
				$w = $selement1['width'];
				$h = $selement1['height'];
			}
			else {
				$w = $map['width'];
				$h = $map['height'];
			}
			list($x1, $y1) = calculateMapAreaLinkCoord($x1, $y1, $w, $h, $x2, $y2);
		}

		if (isset($selement2['elementsubtype']) && $selement2['elementsubtype'] == SYSMAP_ELEMENT_AREA_TYPE_CUSTOM) {
			if ($selement2['areatype'] == SYSMAP_ELEMENT_AREA_TYPE_CUSTOM) {
				$w = $selement2['width'];
				$h = $selement2['height'];
			}
			else {
				$w = $map['width'];
				$h = $map['height'];
			}
			list($x2, $y2) = calculateMapAreaLinkCoord($x2, $y2, $w, $h, $x1, $y1);
		}

		$drawtype = $link['drawtype'];
		$color = convertColor($im, $link['color']);

		$linktriggers = $link['linktriggers'];
		order_result($linktriggers, 'triggerid');

		if (!empty($linktriggers)) {
			$max_severity = 0;

			$triggers = array();
			foreach ($linktriggers as $link_trigger) {
				if ($link_trigger['triggerid'] == 0) {
					continue;
				}
				$id = $link_trigger['linktriggerid'];

				$triggers[$id] = zbx_array_merge($link_trigger, get_trigger_by_triggerid($link_trigger['triggerid']));
				if ($triggers[$id]['status'] == TRIGGER_STATUS_ENABLED && $triggers[$id]['value'] == TRIGGER_VALUE_TRUE) {
					if ($triggers[$id]['priority'] >= $max_severity) {
						$drawtype = $triggers[$id]['drawtype'];
						$color = convertColor($im, $triggers[$id]['color']);
						$max_severity = $triggers[$id]['priority'];
					}
				}
			}
		}

		$label = $link['label'];

		$label = str_replace("\r", '', $label);
		$strings = explode("\n", $label);

		$box_width = 0;
		$box_height = 0;

		foreach ($strings as $snum => $str) {
			$strings[$snum] = $resolveMacros ? resolveMapLabelMacros($str) : $str;
		}

		foreach ($strings as $str) {
			$dims = imageTextSize(8, 0, $str);

			$box_width = ($box_width > $dims['width']) ? $box_width : $dims['width'];
			$box_height += $dims['height'] + 2;
		}

		$boxX_left = round(($x1 + $x2) / 2 - ($box_width / 2) - 6);
		$boxX_right = round(($x1 + $x2) / 2 + ($box_width / 2) + 6);

		$boxY_top = round(($y1 + $y2) / 2 - ($box_height / 2) - 4);
		$boxY_bottom = round(($y1 + $y2) / 2 + ($box_height / 2) + 2);

		switch ($drawtype) {
			case MAP_LINK_DRAWTYPE_DASHED_LINE:
			case MAP_LINK_DRAWTYPE_DOT:
				dashedRectangle($im, $boxX_left, $boxY_top, $boxX_right, $boxY_bottom, $color);
				break;
			case MAP_LINK_DRAWTYPE_BOLD_LINE:
				imagerectangle($im, $boxX_left - 1, $boxY_top - 1, $boxX_right + 1, $boxY_bottom + 1, $color);
				// break; is not ne
			case MAP_LINK_DRAWTYPE_LINE:
			default:
				imagerectangle($im, $boxX_left, $boxY_top, $boxX_right, $boxY_bottom, $color);
		}

		imagefilledrectangle($im, $boxX_left + 1, $boxY_top + 1, $boxX_right - 1, $boxY_bottom - 1, $colors['White']);

		$increasey = 4;
		foreach ($strings as $str) {
			$dims = imageTextSize(8, 0, $str);

			$labelx = ($x1 + $x2) / 2 - ($dims['width'] / 2);
			$labely = $boxY_top + $increasey;

			imagetext($im, 8, 0, $labelx, $labely + $dims['height'], $colors['Black'], $str);

			$increasey += $dims['height'] + 2;
		}
	}
}

function drawMapLabels(&$im, $map, $mapInfo, $resolveMacros = true) {
	global $colors;

	if ($map['label_type'] == MAP_LABEL_TYPE_NOTHING && $map['label_format'] == SYSMAP_LABEL_ADVANCED_OFF) {
		return;
	}

	$selements = $map['selements'];
	$allStrings = '';
	$labelLines = array();
	$statusLines = array();

	foreach ($selements as $sid => $selement) {
		if (isset($selement['elementsubtype']) && $selement['elementsubtype'] == SYSMAP_ELEMENT_SUBTYPE_HOST_GROUP_ELEMENTS) {
			unset($selements[$sid]);
		}
	}

	// set label type and custom label text for all selements
	foreach ($selements as $selementId => $selement) {
		$selements[$selementId]['label_type'] = $map['label_type'];

		if ($map['label_format'] == SYSMAP_LABEL_ADVANCED_OFF) {
			continue;
		}

		switch ($selement['elementtype']) {
			case SYSMAP_ELEMENT_TYPE_HOST_GROUP:
				$selements[$selementId]['label_type'] = $map['label_type_hostgroup'];
				if ($map['label_type_hostgroup'] == MAP_LABEL_TYPE_CUSTOM) {
					$selements[$selementId]['label'] = $map['label_string_hostgroup'];
				}
				break;

			case SYSMAP_ELEMENT_TYPE_HOST:
				$selements[$selementId]['label_type'] = $map['label_type_host'];
				if ($map['label_type_host'] == MAP_LABEL_TYPE_CUSTOM) {
					$selements[$selementId]['label'] = $map['label_string_host'];
				}
				break;

			case SYSMAP_ELEMENT_TYPE_TRIGGER:
				$selements[$selementId]['label_type'] = $map['label_type_trigger'];
				if ($map['label_type_trigger'] == MAP_LABEL_TYPE_CUSTOM) {
					$selements[$selementId]['label'] = $map['label_string_trigger'];
				}
				break;

			case SYSMAP_ELEMENT_TYPE_MAP:
				$selements[$selementId]['label_type'] = $map['label_type_map'];
				if ($map['label_type_map'] == MAP_LABEL_TYPE_CUSTOM) {
					$selements[$selementId]['label'] = $map['label_string_map'];
				}
				break;

			case SYSMAP_ELEMENT_TYPE_IMAGE:
				$selements[$selementId]['label_type'] = $map['label_type_image'];
				if ($map['label_type_image'] == MAP_LABEL_TYPE_CUSTOM) {
					$selements[$selementId]['label'] = $map['label_string_image'];
				}
				break;
		}
	}

	foreach ($selements as $selementId => $selement) {
		if (!isset($labelLines[$selementId])) {
			$labelLines[$selementId] = array();
		}
		if (!isset($statusLines[$selementId])) {
			$statusLines[$selementId] = array();
		}

		$msg = $resolveMacros ? resolveMapLabelMacrosAll($selement) : $selement['label'];

		$allStrings .= $msg;
		$msgs = explode("\n", $msg);
		foreach ($msgs as $msg) {
			$labelLines[$selementId][] = array('msg' => $msg);
		}

		$elementInfo = $mapInfo[$selementId];

		foreach (array('problem', 'unack', 'maintenance', 'ok', 'status') as $caption) {
			if (!isset($elementInfo['info'][$caption]) || zbx_empty($elementInfo['info'][$caption]['msg'])) {
				continue;
			}

			$statusLines[$selementId][] = array(
				'msg' => $elementInfo['info'][$caption]['msg'],
				'color' => $elementInfo['info'][$caption]['color']
			);

			$allStrings .= $elementInfo['info'][$caption]['msg'];
		}
	}

	$allLabelsSize = imageTextSize(8, 0, str_replace("\r", '', str_replace("\n", '', $allStrings)));
	$labelFontHeight = $allLabelsSize['height'];
	$labelFontBaseline = $allLabelsSize['baseline'];

	$elementsHostIds = array();
	foreach ($selements as $selement) {
		if ($selement['label_type'] != MAP_LABEL_TYPE_IP) {
			continue;
		}
		if ($selement['elementtype'] == SYSMAP_ELEMENT_TYPE_HOST) {
			$elementsHostIds[] = $selement['elementid'];
		}
	}

	if (!empty($elementsHostIds)) {
		$mapHosts = API::Host()->get(array(
			'hostids' => $elementsHostIds,
			'output' => array('hostid'),
			'selectInterfaces' => API_OUTPUT_EXTEND
		));
		$mapHosts = zbx_toHash($mapHosts, 'hostid');
	}

	// draw
	foreach ($selements as $selementId => $selement) {
		if (empty($selement) || $selement['label_type'] == MAP_LABEL_TYPE_NOTHING) {
			continue;
		}

		$elementInfo = $mapInfo[$selementId];

		$hl_color = null;
		$st_color = null;

		if (!isset($_REQUEST['noselements']) && ($map['highlight'] % 2) == SYSMAP_HIGHLIGHT_ON) {
			if ($elementInfo['icon_type'] == SYSMAP_ELEMENT_ICON_ON) {
				$hl_color = true;
			}
			if ($elementInfo['icon_type'] == SYSMAP_ELEMENT_ICON_MAINTENANCE) {
				$st_color = true;
			}
			if ($elementInfo['icon_type'] == SYSMAP_ELEMENT_ICON_DISABLED) {
				$st_color = true;
			}
		}

		if (in_array($selement['elementtype'], array(SYSMAP_ELEMENT_TYPE_HOST_GROUP, SYSMAP_ELEMENT_TYPE_MAP))
				&& !is_null($hl_color)) {
			$st_color = null;
		}
		elseif (!is_null($st_color)) {
			$hl_color = null;
		}

		$labelLocation = (is_null($selement['label_location']) || $selement['label_location'] < 0)
			? $map['label_location']
			: $selement['label_location'];

		$label = array();

		if ($selement['label_type'] == MAP_LABEL_TYPE_IP && $selement['elementtype'] == SYSMAP_ELEMENT_TYPE_HOST) {
			$interface = reset($mapHosts[$selement['elementid']]['interfaces']);

			$label[] = array('msg' => $interface['ip']);
			$label = array_merge($label, $statusLines[$selementId]);
		}
		elseif ($selement['label_type'] == MAP_LABEL_TYPE_STATUS) {
			$label = $statusLines[$selementId];
		}
		elseif ($selement['label_type'] == MAP_LABEL_TYPE_NAME) {
			$label[] = array('msg' => $elementInfo['name']);
			$label = array_merge($label, $statusLines[$selementId]);
		}
		else {
			$label = array_merge($labelLines[$selementId], $statusLines[$selementId]);
		}

		if (empty($label)) {
			continue;
		}

		$w = 0;
		foreach ($label as $str) {
			$dims = imageTextSize(8, 0, $str['msg']);
			$w = max($w, $dims['width']);
		}

		$h = count($label) * $labelFontHeight;
		$x = $selement['x'];
		$y = $selement['y'];

		$image = get_png_by_selement($elementInfo);
		$iconX = imagesx($image);
		$iconY = imagesy($image);

		if (!is_null($hl_color)) {
			$icon_hl = 14;
		}
		elseif (!is_null($st_color)) {
			$icon_hl = 6;
		}
		else {
			$icon_hl = 2;
		}

		switch ($labelLocation) {
			case MAP_LABEL_LOC_TOP:
				$y_rec = $y - $icon_hl - $h - 6;
				$x_rec = $x + $iconX / 2 - $w / 2;
				break;

			case MAP_LABEL_LOC_LEFT:
				$y_rec = $y - $h / 2 + $iconY / 2;
				$x_rec = $x - $icon_hl - $w;
				break;

			case MAP_LABEL_LOC_RIGHT:
				$y_rec = $y - $h / 2 + $iconY / 2;
				$x_rec = $x + $iconX + $icon_hl;
				break;

			case MAP_LABEL_LOC_BOTTOM:
			default:
				$y_rec = $y + $iconY + $icon_hl;
				$x_rec = $x + $iconX / 2 - $w / 2;
		}

		$increasey = 12;
		foreach ($label as $line) {
			if (zbx_empty($line['msg'])) {
				continue;
			}

			$str = str_replace("\r", '', $line['msg']);
			$color = isset($line['color']) ? $line['color'] : $colors['Black'];

			$dims = imageTextSize(8, 0, $str);

			if ($labelLocation == MAP_LABEL_LOC_TOP || $labelLocation == MAP_LABEL_LOC_BOTTOM) {
				$x_label = $x + ceil($iconX / 2) - ceil($dims['width'] / 2);
			}
			elseif ($labelLocation == MAP_LABEL_LOC_LEFT) {
				$x_label = $x_rec + $w - $dims['width'];
			}
			else {
				$x_label = $x_rec;
			}

			imagefilledrectangle(
				$im,
				$x_label - 1, $y_rec + $increasey - $labelFontHeight + $labelFontBaseline,
				$x_label + $dims['width'] + 1, $y_rec + $increasey + $labelFontBaseline,
				$colors['White']
			);
			imagetext($im, 8, 0, $x_label, $y_rec + $increasey, $color, $str);

			$increasey += $labelFontHeight + 1;
		}
	}
}

/**
 * For each host group which is area for hosts virtual elements as hosts from that host group are created
 *
 * @param array $map
 * @return array areas with area coordinates and selementids
 */
function populateFromMapAreas(array &$map) {
	$areas = array();

	foreach ($map['selements'] as $selement) {
		if ($selement['elementsubtype'] == SYSMAP_ELEMENT_SUBTYPE_HOST_GROUP_ELEMENTS) {
			$area = array('selementids' => array());

			$origSelement = $selement;

			$hosts = API::host()->get(array(
				'groupids' => $selement['elementid'],
				'sortfield' => 'name',
				'output' => array('hostid'),
				'nopermissions' => true,
				'preservekeys' => true
			));
			$hostsCount = count($hosts);

			if ($hostsCount == 0) {
				continue;
			}

			if ($selement['areatype'] == SYSMAP_ELEMENT_AREA_TYPE_CUSTOM) {
				$area['width'] = $selement['width'];
				$area['height'] = $selement['height'];
				$area['x'] = $selement['x'];
				$area['y'] = $selement['y'];
			}
			else {
				$area['width'] = $map['width'];
				$area['height'] = $map['height'];
				$area['x'] = 0;
				$area['y'] = 0;
			}

			foreach ($hosts as $host) {
				$selement['elementtype'] = SYSMAP_ELEMENT_TYPE_HOST;
				$selement['elementsubtype'] = SYSMAP_ELEMENT_SUBTYPE_HOST_GROUP;
				$selement['elementid'] = $host['hostid'];

				$newSelementid = rand(1, 9999999);
				while (isset($map['selements'][$newSelementid])) {
					$newSelementid += 1;
				};
				$selement['selementid'] = $newSelementid;

				$area['selementids'][$newSelementid] = $newSelementid;
				$map['selements'][$newSelementid] = $selement;
			}

			$areas[] = $area;

			foreach ($map['links'] as $link) {
				// do not multiply links between two areas
				if ($map['selements'][$link['selementid1']]['elementsubtype'] == SYSMAP_ELEMENT_SUBTYPE_HOST_GROUP_ELEMENTS
						&& $map['selements'][$link['selementid2']]['elementsubtype'] == SYSMAP_ELEMENT_SUBTYPE_HOST_GROUP_ELEMENTS) {
					continue;
				}

				$idNumber = null;
				if ($link['selementid1'] == $origSelement['selementid']) {
					$idNumber = 'selementid1';
				}
				elseif ($link['selementid2'] == $origSelement['selementid']) {
					$idNumber = 'selementid2';
				}

				if ($idNumber) {
					foreach ($area['selementids'] as $newSelementid) {
						$newLinkid = rand(1, 9999999);
						while (isset($map['links'][$newLinkid])) {
							$newLinkid += 1;
						};

						$link['linkid'] = $newLinkid;
						$link[$idNumber] = $newSelementid;
						$map['links'][$newLinkid] = $link;
					}
				}
			}
		}
	}

	return $areas;
}

/**
 * Calculates coordinates from elements inside areas
 *
 * @param array $map
 * @param array $areas
 * @param array $mapInfo
 *
 * @return void
 */
function processAreasCoordinates(array &$map, array $areas, array $mapInfo) {
	foreach ($areas as $area) {
		$rowPlaceCount = ceil(sqrt(count($area['selementids'])));

		// offset from area borders
		$area['x'] += 5;
		$area['y'] += 5;
		$area['width'] -= 5;
		$area['height'] -= 5;

		$xOffset = floor($area['width'] / $rowPlaceCount);
		$yOffset = floor($area['height'] / $rowPlaceCount);

		$colNum = 0;
		$rowNum = 0;
		// some offset is required so that icon highlights are not drawn outside area
		$borderOffset = 20;
		foreach ($area['selementids'] as $selementId) {
			$selement = $map['selements'][$selementId];

			$image = get_png_by_selement($mapInfo[$selementId]);
			$iconX = imagesx($image);
			$iconY = imagesy($image);

			$labelLocation = (is_null($selement['label_location']) || ($selement['label_location'] < 0))
				? $map['label_location'] : $selement['label_location'];
			switch ($labelLocation) {
				case MAP_LABEL_LOC_TOP:
					$newX = $area['x'] + ($xOffset / 2) - ($iconX / 2);
					$newY = $area['y'] + $yOffset - $iconY - ($iconY >= $iconX ? 0 : abs($iconX - $iconY) / 2) - $borderOffset;
					break;
				case MAP_LABEL_LOC_LEFT:
					$newX = $area['x'] + $xOffset - $iconX - $borderOffset;
					$newY = $area['y'] + ($yOffset / 2) - ($iconY / 2);
					break;
				case MAP_LABEL_LOC_RIGHT:
					$newX = $area['x'] + $borderOffset;
					$newY = $area['y'] + ($yOffset / 2) - ($iconY / 2);
					break;
				case MAP_LABEL_LOC_BOTTOM:
					$newX = $area['x'] + ($xOffset / 2) - ($iconX / 2);
					$newY = $area['y'] + abs($iconX - $iconY) / 2 + $borderOffset;
					break;
			}

			$map['selements'][$selementId]['x'] = $newX + ($colNum * $xOffset);
			$map['selements'][$selementId]['y'] = $newY + ($rowNum * $yOffset);

			$colNum++;
			if ($colNum == $rowPlaceCount) {
				$colNum = 0;
				$rowNum++;
			}
		}
	}
}

/**
 * Calculates area connector point on area perimeter
 *
 * @param int $ax      x area coordinate
 * @param int $ay      y area coordinate
 * @param int $aWidth  area width
 * @param int $aHeight area height
 * @param int $x2      x coordinate of connector second element
 * @param int $y2      y coordinate of connector second element
 *
 * @return array contains two values, x and y coordinates of new area connector point
 */
function calculateMapAreaLinkCoord($ax, $ay, $aWidth, $aHeight, $x2, $y2) {
	$dY = abs($y2 - $ay);
	$dX = abs($x2 - $ax);

	$halfHeight = $aHeight / 2;
	$halfWidth = $aWidth / 2;

	if ($dY == 0) {
		$ay = $y2;
		$ax = ($x2 < $ax) ? $ax - $halfWidth : $ax + $halfWidth;
	}
	elseif ($dX == 0) {
		$ay = ($y2 > $ay) ? $ay + $halfHeight : $ay - $halfHeight;
		$ax = $x2;
	}
	else {
		$koef = $halfHeight / $dY;

		$c = $dX * $koef;

		// if point is further than area diagonal, we should use calculations with width instead of height
		if (($halfHeight / $c) > ($halfHeight / $halfWidth)) {
			$ay = ($y2 > $ay) ? $ay + $halfHeight : $ay - $halfHeight;
			$ax = ($x2 < $ax) ? $ax - $c : $ax + $c;
		}
		else {
			$koef = $halfWidth / $dX;

			$c = $dY * $koef;

			$ay = ($y2 > $ay) ? $ay + $c : $ay - $c;
			$ax = ($x2 < $ax) ? $ax - $halfWidth : $ax + $halfWidth;
		}
	}

	return array($ax, $ay);
}

/**
 * Get icon id by mapping.
 *
 * @param array $iconMap
 * @param array $inventory
 *
 * @return int
 */
function getIconByMapping($iconMap, $inventory) {
	if (!empty($inventory['inventory'])) {
		$inventories = getHostInventories();

		foreach ($iconMap['mappings'] as $mapping) {
			try {
				$expr = new GlobalRegExp($mapping['expression']);
				if ($expr->match($inventory['inventory'][$inventories[$mapping['inventory_link']]['db_field']])) {
					return $mapping['iconid'];
				}
			}
			catch(Exception $e) {
				continue;
			}
		}
	}

	return $iconMap['default_iconid'];
}

/**
 * Get parent maps for current map.
 *
 * @param int $mapId
 *
 * @return array
 */
function getParentMaps($mapId) {
	$parentMaps = DBfetchArrayAssoc(DBselect(
		'SELECT s.sysmapid,s.name'.
			' FROM sysmaps s'.
				' JOIN sysmaps_elements se ON se.sysmapid=s.sysmapid'.
			' WHERE se.elementtype='.SYSMAP_ELEMENT_TYPE_MAP.
				' AND se.elementid='.zbx_dbstr($mapId)
	), 'sysmapid');

	CArrayHelper::sort($parentMaps, array('name'));

	return $parentMaps;
}
