additional_plugins/serendipity_event_osm/serendipity_event_static_osm.php

<?php
	if (IN_serendipity !== true) {
		die ("Don't hack!");
	}

	@serendipity_plugin_api::load_language(dirname(__FILE__));
	include dirname(__FILE__) . '/plugin_version.inc.php';

	class serendipity_event_static_osm extends serendipity_event
	{
		function introspect(&$propbag)
		{
			$propbag->add('name', PLUGIN_EVENT_STATIC_OSM_NAME);
			$propbag->add('description', PLUGIN_EVENT_STATIC_OSM_DESCRIPTION);
			$propbag->add('copyright', 'GPL');
			$propbag->add('configuration', array('compress_gpx'));
			$propbag->add('event_hooks', array(
				'frontend_header' => true,
				'backend_image_add' => true
			));
			$propbag->add('author', PLUGIN_EVENT_OSM_AUTHOR);
			$propbag->add('version', PLUGIN_EVENT_OSM_VERSION);
			$propbag->add('requirements', array(
				'serendipity' => '2.3'
			));
			$propbag->add('stackable', false);
			$propbag->add('groups', array('FRONTEND_ENTRY_RELATED'));
			$this->dependencies = array(
				'serendipity_event_geo_osm' => 'keep'
			);
		}

		function generate_content(&$title)
		{
			$title = PLUGIN_EVENT_STATIC_OSM_NAME;
		}

		function event_hook($event, &$bag, &$eventData, $addData = null)
		{
			global $serendipity;
			if ($event === 'frontend_header') {
				echo '    <link rel="stylesheet" href="'.$this->getFile('ressources/ol.css', 'serendipityHTTPPath').'" type="text/css" />'.PHP_EOL;
				echo '    <link rel="stylesheet" href="'.$this->getFile('ressources/osm.css', 'serendipityHTTPPath').'" type="text/css" />'.PHP_EOL;
				echo '    <script src="'.$this->getFile('ressources/ol.js', 'serendipityHTTPPath').'"></script>'.PHP_EOL;
				echo '    <script src="'.$this->getFile('ressources/osm.js', 'serendipityHTTPPath').'"></script>'.PHP_EOL;
			} else if ($event === 'backend_image_add' && $this->get_config('compress_gpx', true) === true) {
				$fileName = $eventData;
				$file = fopen($fileName.'.temp', 'wb');
				fwrite($file, '<?xml version="1.0" encoding="UTF-8" standalone="yes" ?><gpx version="1.1" creator="surrim.org" xmlns="http://www.topografix.com/GPX/1/1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd">');
				$gpx = simplexml_load_file($fileName);
				foreach ($gpx->trk as $trk) {
					fwrite($file, '<trk>');
					foreach($trk->trkseg as $seg) {
						fwrite($file, '<trkseg>');
						foreach($seg->trkpt as $pt) {
							fwrite($file, '<trkpt lat="'.$pt['lat'].'" lon="'.$pt['lon'].'"><ele>'.$pt->ele.'</ele></trkpt>');
						}
						fwrite($file, '</trkseg>');
					}
					fwrite($file, '</trk>');
				}
				unset($gpx);
				fwrite($file, '</gpx>');
				fclose($file);
				rename($fileName.'.temp', $fileName);
				// TODO: serendipity_updateImageInDatabase(array('size' => @filesize($fileName)), $id);
			}
		}

		function introspect_config_item($name, &$propbag)
		{
			switch($name) {
				case 'compress_gpx':
					$propbag->add('type',        'boolean');
					$propbag->add('name',        PLUGIN_EVENT_STATIC_OSM_COMPRESS_GPX);
					$propbag->add('description', PLUGIN_EVENT_STATIC_OSM_COMPRESS_GPX_DESCRIPTION);
					$propbag->add('default',     true);
					break;
				default:
					return false;
			}
			return true;
		}
	}
?>