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<?php
class Location
{
private static $flatLocationCache = false;
private static $assocLocationCache = false;
public static function queryLocations()
{
$res = Database::simpleQuery("SELECT locationid, parentlocationid, locationname FROM location");
$rows = array();
while ($row = $res->fetch(PDO::FETCH_ASSOC)) {
$rows[] = $row;
}
return $rows;
}
public static function getLocationsAssoc()
{
if (self::$assocLocationCache === false) {
$rows = self::queryLocations();
$rows = self::buildTree($rows);
self::$assocLocationCache = self::flattenTreeAssoc($rows);
}
return self::$assocLocationCache;
}
private static function flattenTreeAssoc($tree, $depth = 0)
{
$output = array();
foreach ($tree as $node) {
$output[(int)$node['locationid']] = array(
'parentlocationid' => (int)$node['parentlocationid'],
'locationname' => $node['locationname'],
'depth' => $depth
);
if (!empty($node['children'])) {
$output += self::flattenTreeAssoc($node['children'], $depth + 1);
}
}
return $output;
}
public static function getLocations($default = 0, $excludeId = 0, $addNoParent = false)
{
if (self::$flatLocationCache === false) {
$rows = self::queryLocations();
$rows = self::buildTree($rows);
$rows = self::flattenTree($rows);
self::$flatLocationCache = $rows;
} else {
$rows = self::$flatLocationCache;
}
$del = false;
unset($row);
foreach ($rows as $key => &$row) {
if ($del === false && $row['locationid'] == $excludeId) {
$del = $row['depth'];
} elseif ($del !== false && $row['depth'] <= $del) {
$del = false;
}
if ($del !== false) {
unset($rows[$key]);
continue;
}
if ($row['locationid'] == $default) {
$row['selected'] = true;
}
}
if ($addNoParent) {
array_unshift($rows, array(
'locationid' => 0,
'locationname' => '-----',
'selected' => $default == 0
));
}
return array_values($rows);
}
public static function buildTree($elements, $parentId = 0)
{
$branch = array();
$sort = array();
foreach ($elements as $element) {
if ($element['locationid'] == 0 || $element['locationid'] == $parentId)
continue;
if ($element['parentlocationid'] == $parentId) {
$children = self::buildTree($elements, $element['locationid']);
if (!empty($children)) {
$element['children'] = $children;
}
$branch[] = $element;
$sort[] = $element['locationname'];
}
}
array_multisort($sort, SORT_ASC, $branch);
return $branch;
}
private static function flattenTree($tree, $depth = 0)
{
$output = array();
foreach ($tree as $node) {
$output[] = array(
'locationid' => $node['locationid'],
'locationname' => $node['locationname'],
'locationpad' => str_repeat('--', $depth),
'locationspan1' => $depth + 1,
'locationspan2' => 10 - $depth,
'depth' => $depth
);
if (!empty($node['children'])) {
$output = array_merge($output, self::flattenTree($node['children'], $depth + 1));
}
}
return $output;
}
public static function extractIds($tree)
{
$ids = array();
foreach ($tree as $node) {
$ids[] = $node['locationid'];
if (!empty($node['children'])) {
$ids = array_merge($ids, self::extractIds($node['children']));
}
}
return $ids;
}
public static function getFromIp($ip)
{
$locationId = false;
$long = sprintf('%u', ip2long($ip));
$net = Database::simpleQuery('SELECT locationid FROM subnet'
. ' WHERE :ip BETWEEN startaddr AND endaddr', array('ip' => $long));
while ($row = $net->fetch(PDO::FETCH_ASSOC)) {
$locations = self::getLocationsAssoc();
$id = (int)$row['locationid'];
if (!isset($locations[$id])) continue;
if ($locationId !== false && $locations[$id]['depth'] <= $locations[$locationId]['depth']) continue;
$locationId = $id;
}
return $locationId;
}
}
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