mprins / dokuwiki-plugin-spatialhelper

action.php

Indentation +412 added lines, -412 removed lines

@@ -25,416 +25,416 @@
  */
 class action_plugin_spatialhelper extends DokuWiki_Action_Plugin {
 
-    /**
-     * Register for events.
-     *
-     * @param Doku_Event_Handler $controller
-     *          DokuWiki's event controller object. Also available as global $EVENT_HANDLER
-     */
-    public function register(Doku_Event_Handler $controller): void {
-        // listen for page add / delete events
-        // http://www.dokuwiki.org/devel:event:indexer_page_add
-        $controller->register_hook('INDEXER_PAGE_ADD', 'BEFORE', $this, 'handleIndexerPageAdd');
-        $controller->register_hook('IO_WIKIPAGE_WRITE', 'BEFORE', $this, 'removeFromIndex');
-
-        // http://www.dokuwiki.org/devel:event:sitemap_generate
-        $controller->register_hook('SITEMAP_GENERATE', 'BEFORE', $this, 'handleSitemapGenerateBefore');
-        // using after will only trigger us if a sitemap was actually created
-        $controller->register_hook('SITEMAP_GENERATE', 'AFTER', $this, 'handleSitemapGenerateAfter');
-
-        // handle actions we know of
-        $controller->register_hook('ACTION_ACT_PREPROCESS', 'BEFORE', $this, 'handleActionActPreprocess', array());
-        // handle HTML eg. /dokuwiki/doku.php?id=start&do=findnearby&geohash=u15vk4
-        $controller->register_hook(
-            'TPL_ACT_UNKNOWN', 'BEFORE', $this, 'findnearby', array(
-                                 'format' => 'HTML'
-                             )
-        );
-        // handles AJAX/json eg: jQuery.post("/dokuwiki/lib/exe/ajax.php?id=start&call=findnearby&geohash=u15vk4");
-        $controller->register_hook(
-            'AJAX_CALL_UNKNOWN', 'BEFORE', $this, 'findnearby', array(
-                                   'format' => 'JSON'
-                               )
-        );
-
-        // listen for media uploads and deletes
-        $controller->register_hook('MEDIA_UPLOAD_FINISH', 'BEFORE', $this, 'handleMediaUploaded', array());
-        $controller->register_hook('MEDIA_DELETE_FILE', 'BEFORE', $this, 'handleMediaDeleted', array());
-
-        $controller->register_hook('TPL_METAHEADER_OUTPUT', 'BEFORE', $this, 'handleMetaheaderOutput');
-        $controller->register_hook('PLUGIN_POPULARITY_DATA_SETUP', 'AFTER', $this, 'popularity');
-    }
-
-    /**
-     * Update the spatial index for the page.
-     *
-     * @param Doku_Event $event
-     *          event object
-     * @param mixed      $param
-     *          the parameters passed to register_hook when this handler was registered
-     */
-    public function handleIndexerPageAdd(Doku_Event $event, $param): void {
-        // $event→data['page'] – the page id
-        // $event→data['body'] – empty, can be filled by additional content to index by your plugin
-        // $event→data['metadata'] – the metadata that shall be indexed. This is an array where the keys are the
-        //    metadata indexes and the value a string or an array of strings with the values.
-        //    title and relation_references will already be set.
-        $id      = $event->data ['page'];
-        $indexer = plugin_load('helper', 'spatialhelper_index');
-        $entries = $indexer->updateSpatialIndex($id);
-    }
-
-    /**
-     * Update the spatial index, removing the page.
-     *
-     * @param Doku_Event $event
-     *          event object
-     * @param mixed      $param
-     *          the parameters passed to register_hook when this handler was registered
-     */
-    public function removeFromIndex(Doku_Event $event, $param): void {
-        // event data:
-        // $data[0] – The raw arguments for io_saveFile as an array. Do not change file path.
-        // $data[0][0] – the file path.
-        // $data[0][1] – the content to be saved, and may be modified.
-        // $data[1] – ns: The colon separated namespace path minus the trailing page name. (false if root ns)
-        // $data[2] – page_name: The wiki page name.
-        // $data[3] – rev: The page revision, false for current wiki pages.
-
-        dbglog($event->data, "Event data in removeFromIndex.");
-        if(@file_exists($event->data [0] [0])) {
-            // file not new
-            if(!$event->data [0] [1]) {
-                // file is empty, page is being deleted
-                if(empty ($event->data [1])) {
-                    // root namespace
-                    $id = $event->data [2];
-                } else {
-                    $id = $event->data [1] . ":" . $event->data [2];
-                }
-                $indexer = plugin_load('helper', 'spatialhelper_index');
-                if($indexer) {
-                    $indexer->deleteFromIndex($id);
-                }
-            }
-        }
-    }
-
-    /**
-     * Add a new SitemapItem object that points to the KML of public geocoded pages.
-     *
-     * @param Doku_Event $event
-     * @param mixed      $param
-     */
-    public function handleSitemapGenerateBefore(Doku_Event $event, $param): void {
-        $path                     = mediaFN($this->getConf('media_kml'));
-        $lastmod                  = @filemtime($path);
-        $event->data ['items'] [] = new Item(ml($this->getConf('media_kml'), '', true, '&', true), $lastmod);
-        //dbglog($event->data ['items'],
-        //  "Added a new SitemapItem object that points to the KML of public geocoded pages.");
-    }
-
-    /**
-     * Create a spatial sitemap or attach the geo/kml map to the sitemap.
-     *
-     * @param Doku_Event $event
-     *          event object, not used
-     * @param mixed      $param
-     *          parameter array, not used
-     */
-    public function handleSitemapGenerateAfter(Doku_Event $event, $param): bool {
-        // $event→data['items']: Array of SitemapItem instances, the array of sitemap items that already
-        //      contains all public pages of the wiki
-        // $event→data['sitemap']: The path of the file the sitemap will be saved to.
-        if($helper = plugin_load('helper', 'spatialhelper_sitemap')) {
-            // dbglog($helper, "createSpatialSitemap loaded helper.");
-
-            $kml = $helper->createKMLSitemap($this->getConf('media_kml'));
-            $rss = $helper->createGeoRSSSitemap($this->getConf('media_georss'));
-
-            if(!empty ($this->getConf('sitemap_namespaces'))) {
-                $namespaces = array_map('trim', explode("\n", $this->getConf('sitemap_namespaces')));
-                foreach($namespaces as $namespace) {
-                    $kmlN = $helper->createKMLSitemap($namespace . $this->getConf('media_kml'));
-                    $rssN = $helper->createGeoRSSSitemap($namespace . $this->getConf('media_georss'));
-                    dbglog(
-                        $kmlN && $rssN,
-                        "handleSitemapGenerateAfter, created KML / GeoRSS sitemap in $namespace, succes: "
-                    );
-                }
-            }
-            return $kml && $rss;
-        } else {
-            dbglog($helper, "createSpatialSitemap NOT loaded helper.");
-        }
-    }
-
-    /**
-     * trap findnearby action.
-     * This addional handler is required as described at: https://www.dokuwiki.org/devel:event:tpl_act_unknown
-     *
-     * @param Doku_Event $event
-     *          event object
-     * @param mixed      $param
-     *          not used
-     */
-    public function handleActionActPreprocess(Doku_Event $event, $param): void {
-        if($event->data !== 'findnearby') {
-            return;
-        }
-        $event->preventDefault();
-    }
-
-    /**
-     * handle findnearby action.
-     *
-     * @param Doku_Event $event
-     *          event object
-     * @param mixed      $param
-     *          associative array with keys
-     *          'format'=> HTML | JSON
-     */
-    public function findnearby(Doku_Event $event, $param): void {
-        if($event->data !== 'findnearby') {
-            return;
-        }
-        $event->preventDefault();
-        $results = array();
-        global $INPUT;
-        if($helper = plugin_load('helper', 'spatialhelper_search')) {
-            if($INPUT->has('lat') && $INPUT->has('lon')) {
-                $results = $helper->findNearbyLatLon($INPUT->param('lat'), $INPUT->param('lon'));
-            } elseif($INPUT->has('geohash')) {
-                $results = $helper->findNearby($INPUT->str('geohash'));
-            } else {
-                $results = array(
-                    'error' => hsc($this->getLang('invalidinput'))
-                );
-            }
-        }
-
-        $showMedia = $INPUT->bool('showMedia', true);
-
-        switch($param['format']) {
-            case 'JSON' :
-                $this->printJSON($results);
-                break;
-            case 'HTML' :
-                // fall through to default
-            default :
-                $this->printHTML($results, $showMedia);
-                break;
-        }
-    }
-
-    /**
-     * Print seachresults as HTML lists.
-     *
-     * @param array $searchresults
-     */
-    private function printJSON(array $searchresults): void {
-        require_once DOKU_INC . 'inc/JSON.php';
-        $json = new JSON();
-        header('Content-Type: application/json');
-        print $json->encode($searchresults);
-    }
-
-    /**
-     * Print seachresults as HTML lists.
-     *
-     * @param array $searchresults
-     * @param bool  $showMedia
-     */
-    private function printHTML(array $searchresults, bool $showMedia = true): void {
-        $pages   = (array) ($searchresults ['pages']);
-        $media   = (array) $searchresults ['media'];
-        $lat     = (float) $searchresults ['lat'];
-        $lon     = (float) $searchresults ['lon'];
-        $geohash = (string) $searchresults ['geohash'];
-
-        if(isset ($searchresults ['error'])) {
-            print '<div class="level1"><p>' . hsc($searchresults ['error']) . '</p></div>';
-            return;
-        }
-
-        // print a HTML list
-        print '<h1>' . $this->getLang('results_header') . '</h1>' . DOKU_LF;
-        print '<div class="level1">' . DOKU_LF;
-        if(!empty ($pages)) {
-            $pagelist = '<ol>' . DOKU_LF;
-            foreach($pages as $page) {
-                $pagelist .= '<li>' . html_wikilink(
-                        ':' . $page ['id'], useHeading('navigation') ? null :
-                        noNS($page ['id'])
-                    ) . ' (' . $this->getLang('results_distance_prefix')
-                    . $page ['distance'] . '&nbsp;m) ' . $page ['description'] . '</li>' . DOKU_LF;
-            }
-            $pagelist .= '</ol>' . DOKU_LF;
-
-            print '<h2>' . $this->getLang('results_pages') . hsc(
-                    ' lat;lon: ' . $lat . ';' . $lon
-                    . ' (geohash: ' . $geohash . ')'
-                ) . '</h2>';
-            print '<div class="level2">' . DOKU_LF;
-            print $pagelist;
-            print '</div>' . DOKU_LF;
-        } else {
-            print '<p>' . hsc($this->getLang('nothingfound')) . '</p>';
-        }
-
-        if(!empty ($media) && $showMedia) {
-            $pagelist = '<ol>' . DOKU_LF;
-            foreach($media as $m) {
-                $opts       = array();
-                $link       = ml($m ['id'], $opts, false, '&amp;', false);
-                $opts ['w'] = '100';
-                $src        = ml($m ['id'], $opts);
-                $pagelist   .= '<li><a href="' . $link . '"><img src="' . $src . '"></a> ('
-                    . $this->getLang('results_distance_prefix') . $page ['distance'] . '&nbsp;m) ' . hsc($desc)
-                    . '</li>' . DOKU_LF;
-            }
-            $pagelist .= '</ol>' . DOKU_LF;
-
-            print '<h2>' . $this->getLang('results_media') . hsc(
-                    ' lat;lon: ' . $lat . ';' . $lon
-                    . ' (geohash: ' . $geohash . ')'
-                ) . '</h2>' . DOKU_LF;
-            print '<div class="level2">' . DOKU_LF;
-            print $pagelist;
-            print '</div>' . DOKU_LF;
-        }
-        print '<p>' . $this->getLang('results_precision') . $searchresults ['precision'] . ' m. ';
-        if(strlen($geohash) > 1) {
-            $url = wl(
-                getID(), array(
-                           'do'      => 'findnearby',
-                           'geohash' => substr($geohash, 0, -1)
-                       )
-            );
-            print '<a href="' . $url . '" class="findnearby">' . $this->getLang('search_largerarea') . '</a>.</p>'
-                . DOKU_LF;
-        }
-        print '</div>' . DOKU_LF;
-    }
-
-    /**
-     * add media to spatial index.
-     *
-     * @param Doku_Event $event
-     * @param mixed      $param
-     */
-    public function handleMediaUploaded(Doku_Event $event, $param): void {
-        // data[0] temporary file name (read from $_FILES)
-        // data[1] file name of the file being uploaded
-        // data[2] future directory id of the file being uploaded
-        // data[3] the mime type of the file being uploaded
-        // data[4] true if the uploaded file exists already
-        // data[5] (since 2011-02-06) the PHP function used to move the file to the correct location
-
-        dbglog($event->data, "handleMediaUploaded::event data");
-
-        // check the list of mimetypes
-        // if it's a supported type call appropriate index function
-        if(substr_compare($event->data [3], 'image/jpeg', 0)) {
-            $indexer = plugin_load('helper', 'spatialhelper_index');
-            if($indexer) {
-                $indexer->indexImage($event->data [2]);
-            }
-        }
-        // TODO add image/tiff
-        // TODO kml, gpx, geojson...
-    }
-
-    /**
-     * removes the media from the index.
-     */
-    public function handleMediaDeleted(Doku_Event $event, $param): void {
-        // data['id'] ID data['unl'] unlink return code
-        // data['del'] Namespace directory unlink return code
-        // data['name'] file name data['path'] full path to the file
-        // data['size'] file size
-
-        dbglog($event->data, "handleMediaDeleted::event data");
-
-        // remove the media id from the index
-        $indexer = plugin_load('helper', 'spatialhelper_index');
-        if($indexer) {
-            $indexer->deleteFromIndex('media__' . $event->data ['id']);
-        }
-    }
-
-    /**
-     * add a link to the spatial sitemap files in the header.
-     *
-     * @param Doku_Event $event
-     *          the DokuWiki event. $event->data is a two-dimensional
-     *          array of all meta headers. The keys are meta, link and script.
-     * @param mixed      $param
-     *
-     * @see http://www.dokuwiki.org/devel:event:tpl_metaheader_output
-     */
-    public function handleMetaheaderOutput(Doku_Event $event, $param): void {
-        // TODO maybe test for exist
-        $event->data ["link"] [] = array(
-            "type"  => "application/atom+xml",
-            "rel"   => "alternate",
-            "href"  => ml($this->getConf('media_georss')),
-            "title" => "Spatial ATOM Feed"
-        );
-        $event->data ["link"] [] = array(
-            "type"  => "application/vnd.google-earth.kml+xml",
-            "rel"   => "alternate",
-            "href"  => ml($this->getConf('media_kml')),
-            "title" => "KML Sitemap"
-        );
-    }
-
-    /**
-     * Add spatialhelper popularity data.
-     *
-     * @param Doku_Event $event
-     *          the DokuWiki event
-     */
-    final public function popularity(Doku_Event $event): void {
-        global $updateVersion;
-        $plugin_info                                     = $this->getInfo();
-        $event->data['spatialhelper']['version']         = $plugin_info['date'];
-        $event->data['spatialhelper']['dwversion']       = $updateVersion;
-        $event->data['spatialhelper']['combinedversion'] = $updateVersion . '_' . $plugin_info['date'];
-    }
-
-    /**
-     * Calculate a new coordinate based on start, distance and bearing
-     *
-     * @param $start array
-     *               - start coordinate as decimal lat/lon pair
-     * @param $dist  float
-     *               - distance in kilometers
-     * @param $brng  float
-     *               - bearing in degrees (compass direction)
-     */
-    private function geoDestination(array $start, float $dist, float $brng): array {
-        $lat1 = $this->toRad($start [0]);
-        $lon1 = $this->toRad($start [1]);
-        // http://en.wikipedia.org/wiki/Earth_radius
-        // average earth radius in km
-        $dist = $dist / 6371.01;
-        $brng = $this->toRad($brng);
-
-        $lon2 = $lon1 + atan2(sin($brng) * sin($dist) * cos($lat1), cos($dist) - sin($lat1) * sin($lat2));
-        $lon2 = fmod(($lon2 + 3 * M_PI), (2 * M_PI)) - M_PI;
-
-        return array(
-            $this->toDeg($lat2),
-            $this->toDeg($lon2)
-        );
-    }
-
-    private function toRad(float $deg): float {
-        return $deg * M_PI / 180;
-    }
-
-    private function toDeg(float $rad): float {
-        return $rad * 180 / M_PI;
-    }
+	/**
+	 * Register for events.
+	 *
+	 * @param Doku_Event_Handler $controller
+	 *          DokuWiki's event controller object. Also available as global $EVENT_HANDLER
+	 */
+	public function register(Doku_Event_Handler $controller): void {
+		// listen for page add / delete events
+		// http://www.dokuwiki.org/devel:event:indexer_page_add
+		$controller->register_hook('INDEXER_PAGE_ADD', 'BEFORE', $this, 'handleIndexerPageAdd');
+		$controller->register_hook('IO_WIKIPAGE_WRITE', 'BEFORE', $this, 'removeFromIndex');
+
+		// http://www.dokuwiki.org/devel:event:sitemap_generate
+		$controller->register_hook('SITEMAP_GENERATE', 'BEFORE', $this, 'handleSitemapGenerateBefore');
+		// using after will only trigger us if a sitemap was actually created
+		$controller->register_hook('SITEMAP_GENERATE', 'AFTER', $this, 'handleSitemapGenerateAfter');
+
+		// handle actions we know of
+		$controller->register_hook('ACTION_ACT_PREPROCESS', 'BEFORE', $this, 'handleActionActPreprocess', array());
+		// handle HTML eg. /dokuwiki/doku.php?id=start&do=findnearby&geohash=u15vk4
+		$controller->register_hook(
+			'TPL_ACT_UNKNOWN', 'BEFORE', $this, 'findnearby', array(
+								 'format' => 'HTML'
+							 )
+		);
+		// handles AJAX/json eg: jQuery.post("/dokuwiki/lib/exe/ajax.php?id=start&call=findnearby&geohash=u15vk4");
+		$controller->register_hook(
+			'AJAX_CALL_UNKNOWN', 'BEFORE', $this, 'findnearby', array(
+								   'format' => 'JSON'
+							   )
+		);
+
+		// listen for media uploads and deletes
+		$controller->register_hook('MEDIA_UPLOAD_FINISH', 'BEFORE', $this, 'handleMediaUploaded', array());
+		$controller->register_hook('MEDIA_DELETE_FILE', 'BEFORE', $this, 'handleMediaDeleted', array());
+
+		$controller->register_hook('TPL_METAHEADER_OUTPUT', 'BEFORE', $this, 'handleMetaheaderOutput');
+		$controller->register_hook('PLUGIN_POPULARITY_DATA_SETUP', 'AFTER', $this, 'popularity');
+	}
+
+	/**
+	 * Update the spatial index for the page.
+	 *
+	 * @param Doku_Event $event
+	 *          event object
+	 * @param mixed      $param
+	 *          the parameters passed to register_hook when this handler was registered
+	 */
+	public function handleIndexerPageAdd(Doku_Event $event, $param): void {
+		// $event→data['page'] – the page id
+		// $event→data['body'] – empty, can be filled by additional content to index by your plugin
+		// $event→data['metadata'] – the metadata that shall be indexed. This is an array where the keys are the
+		//    metadata indexes and the value a string or an array of strings with the values.
+		//    title and relation_references will already be set.
+		$id      = $event->data ['page'];
+		$indexer = plugin_load('helper', 'spatialhelper_index');
+		$entries = $indexer->updateSpatialIndex($id);
+	}
+
+	/**
+	 * Update the spatial index, removing the page.
+	 *
+	 * @param Doku_Event $event
+	 *          event object
+	 * @param mixed      $param
+	 *          the parameters passed to register_hook when this handler was registered
+	 */
+	public function removeFromIndex(Doku_Event $event, $param): void {
+		// event data:
+		// $data[0] – The raw arguments for io_saveFile as an array. Do not change file path.
+		// $data[0][0] – the file path.
+		// $data[0][1] – the content to be saved, and may be modified.
+		// $data[1] – ns: The colon separated namespace path minus the trailing page name. (false if root ns)
+		// $data[2] – page_name: The wiki page name.
+		// $data[3] – rev: The page revision, false for current wiki pages.
+
+		dbglog($event->data, "Event data in removeFromIndex.");
+		if(@file_exists($event->data [0] [0])) {
+			// file not new
+			if(!$event->data [0] [1]) {
+				// file is empty, page is being deleted
+				if(empty ($event->data [1])) {
+					// root namespace
+					$id = $event->data [2];
+				} else {
+					$id = $event->data [1] . ":" . $event->data [2];
+				}
+				$indexer = plugin_load('helper', 'spatialhelper_index');
+				if($indexer) {
+					$indexer->deleteFromIndex($id);
+				}
+			}
+		}
+	}
+
+	/**
+	 * Add a new SitemapItem object that points to the KML of public geocoded pages.
+	 *
+	 * @param Doku_Event $event
+	 * @param mixed      $param
+	 */
+	public function handleSitemapGenerateBefore(Doku_Event $event, $param): void {
+		$path                     = mediaFN($this->getConf('media_kml'));
+		$lastmod                  = @filemtime($path);
+		$event->data ['items'] [] = new Item(ml($this->getConf('media_kml'), '', true, '&amp;', true), $lastmod);
+		//dbglog($event->data ['items'],
+		//  "Added a new SitemapItem object that points to the KML of public geocoded pages.");
+	}
+
+	/**
+	 * Create a spatial sitemap or attach the geo/kml map to the sitemap.
+	 *
+	 * @param Doku_Event $event
+	 *          event object, not used
+	 * @param mixed      $param
+	 *          parameter array, not used
+	 */
+	public function handleSitemapGenerateAfter(Doku_Event $event, $param): bool {
+		// $event→data['items']: Array of SitemapItem instances, the array of sitemap items that already
+		//      contains all public pages of the wiki
+		// $event→data['sitemap']: The path of the file the sitemap will be saved to.
+		if($helper = plugin_load('helper', 'spatialhelper_sitemap')) {
+			// dbglog($helper, "createSpatialSitemap loaded helper.");
+
+			$kml = $helper->createKMLSitemap($this->getConf('media_kml'));
+			$rss = $helper->createGeoRSSSitemap($this->getConf('media_georss'));
+
+			if(!empty ($this->getConf('sitemap_namespaces'))) {
+				$namespaces = array_map('trim', explode("\n", $this->getConf('sitemap_namespaces')));
+				foreach($namespaces as $namespace) {
+					$kmlN = $helper->createKMLSitemap($namespace . $this->getConf('media_kml'));
+					$rssN = $helper->createGeoRSSSitemap($namespace . $this->getConf('media_georss'));
+					dbglog(
+						$kmlN && $rssN,
+						"handleSitemapGenerateAfter, created KML / GeoRSS sitemap in $namespace, succes: "
+					);
+				}
+			}
+			return $kml && $rss;
+		} else {
+			dbglog($helper, "createSpatialSitemap NOT loaded helper.");
+		}
+	}
+
+	/**
+	 * trap findnearby action.
+	 * This addional handler is required as described at: https://www.dokuwiki.org/devel:event:tpl_act_unknown
+	 *
+	 * @param Doku_Event $event
+	 *          event object
+	 * @param mixed      $param
+	 *          not used
+	 */
+	public function handleActionActPreprocess(Doku_Event $event, $param): void {
+		if($event->data !== 'findnearby') {
+			return;
+		}
+		$event->preventDefault();
+	}
+
+	/**
+	 * handle findnearby action.
+	 *
+	 * @param Doku_Event $event
+	 *          event object
+	 * @param mixed      $param
+	 *          associative array with keys
+	 *          'format'=> HTML | JSON
+	 */
+	public function findnearby(Doku_Event $event, $param): void {
+		if($event->data !== 'findnearby') {
+			return;
+		}
+		$event->preventDefault();
+		$results = array();
+		global $INPUT;
+		if($helper = plugin_load('helper', 'spatialhelper_search')) {
+			if($INPUT->has('lat') && $INPUT->has('lon')) {
+				$results = $helper->findNearbyLatLon($INPUT->param('lat'), $INPUT->param('lon'));
+			} elseif($INPUT->has('geohash')) {
+				$results = $helper->findNearby($INPUT->str('geohash'));
+			} else {
+				$results = array(
+					'error' => hsc($this->getLang('invalidinput'))
+				);
+			}
+		}
+
+		$showMedia = $INPUT->bool('showMedia', true);
+
+		switch($param['format']) {
+			case 'JSON' :
+				$this->printJSON($results);
+				break;
+			case 'HTML' :
+				// fall through to default
+			default :
+				$this->printHTML($results, $showMedia);
+				break;
+		}
+	}
+
+	/**
+	 * Print seachresults as HTML lists.
+	 *
+	 * @param array $searchresults
+	 */
+	private function printJSON(array $searchresults): void {
+		require_once DOKU_INC . 'inc/JSON.php';
+		$json = new JSON();
+		header('Content-Type: application/json');
+		print $json->encode($searchresults);
+	}
+
+	/**
+	 * Print seachresults as HTML lists.
+	 *
+	 * @param array $searchresults
+	 * @param bool  $showMedia
+	 */
+	private function printHTML(array $searchresults, bool $showMedia = true): void {
+		$pages   = (array) ($searchresults ['pages']);
+		$media   = (array) $searchresults ['media'];
+		$lat     = (float) $searchresults ['lat'];
+		$lon     = (float) $searchresults ['lon'];
+		$geohash = (string) $searchresults ['geohash'];
+
+		if(isset ($searchresults ['error'])) {
+			print '<div class="level1"><p>' . hsc($searchresults ['error']) . '</p></div>';
+			return;
+		}
+
+		// print a HTML list
+		print '<h1>' . $this->getLang('results_header') . '</h1>' . DOKU_LF;
+		print '<div class="level1">' . DOKU_LF;
+		if(!empty ($pages)) {
+			$pagelist = '<ol>' . DOKU_LF;
+			foreach($pages as $page) {
+				$pagelist .= '<li>' . html_wikilink(
+						':' . $page ['id'], useHeading('navigation') ? null :
+						noNS($page ['id'])
+					) . ' (' . $this->getLang('results_distance_prefix')
+					. $page ['distance'] . '&nbsp;m) ' . $page ['description'] . '</li>' . DOKU_LF;
+			}
+			$pagelist .= '</ol>' . DOKU_LF;
+
+			print '<h2>' . $this->getLang('results_pages') . hsc(
+					' lat;lon: ' . $lat . ';' . $lon
+					. ' (geohash: ' . $geohash . ')'
+				) . '</h2>';
+			print '<div class="level2">' . DOKU_LF;
+			print $pagelist;
+			print '</div>' . DOKU_LF;
+		} else {
+			print '<p>' . hsc($this->getLang('nothingfound')) . '</p>';
+		}
+
+		if(!empty ($media) && $showMedia) {
+			$pagelist = '<ol>' . DOKU_LF;
+			foreach($media as $m) {
+				$opts       = array();
+				$link       = ml($m ['id'], $opts, false, '&amp;', false);
+				$opts ['w'] = '100';
+				$src        = ml($m ['id'], $opts);
+				$pagelist   .= '<li><a href="' . $link . '"><img src="' . $src . '"></a> ('
+					. $this->getLang('results_distance_prefix') . $page ['distance'] . '&nbsp;m) ' . hsc($desc)
+					. '</li>' . DOKU_LF;
+			}
+			$pagelist .= '</ol>' . DOKU_LF;
+
+			print '<h2>' . $this->getLang('results_media') . hsc(
+					' lat;lon: ' . $lat . ';' . $lon
+					. ' (geohash: ' . $geohash . ')'
+				) . '</h2>' . DOKU_LF;
+			print '<div class="level2">' . DOKU_LF;
+			print $pagelist;
+			print '</div>' . DOKU_LF;
+		}
+		print '<p>' . $this->getLang('results_precision') . $searchresults ['precision'] . ' m. ';
+		if(strlen($geohash) > 1) {
+			$url = wl(
+				getID(), array(
+						   'do'      => 'findnearby',
+						   'geohash' => substr($geohash, 0, -1)
+					   )
+			);
+			print '<a href="' . $url . '" class="findnearby">' . $this->getLang('search_largerarea') . '</a>.</p>'
+				. DOKU_LF;
+		}
+		print '</div>' . DOKU_LF;
+	}
+
+	/**
+	 * add media to spatial index.
+	 *
+	 * @param Doku_Event $event
+	 * @param mixed      $param
+	 */
+	public function handleMediaUploaded(Doku_Event $event, $param): void {
+		// data[0] temporary file name (read from $_FILES)
+		// data[1] file name of the file being uploaded
+		// data[2] future directory id of the file being uploaded
+		// data[3] the mime type of the file being uploaded
+		// data[4] true if the uploaded file exists already
+		// data[5] (since 2011-02-06) the PHP function used to move the file to the correct location
+
+		dbglog($event->data, "handleMediaUploaded::event data");
+
+		// check the list of mimetypes
+		// if it's a supported type call appropriate index function
+		if(substr_compare($event->data [3], 'image/jpeg', 0)) {
+			$indexer = plugin_load('helper', 'spatialhelper_index');
+			if($indexer) {
+				$indexer->indexImage($event->data [2]);
+			}
+		}
+		// TODO add image/tiff
+		// TODO kml, gpx, geojson...
+	}
+
+	/**
+	 * removes the media from the index.
+	 */
+	public function handleMediaDeleted(Doku_Event $event, $param): void {
+		// data['id'] ID data['unl'] unlink return code
+		// data['del'] Namespace directory unlink return code
+		// data['name'] file name data['path'] full path to the file
+		// data['size'] file size
+
+		dbglog($event->data, "handleMediaDeleted::event data");
+
+		// remove the media id from the index
+		$indexer = plugin_load('helper', 'spatialhelper_index');
+		if($indexer) {
+			$indexer->deleteFromIndex('media__' . $event->data ['id']);
+		}
+	}
+
+	/**
+	 * add a link to the spatial sitemap files in the header.
+	 *
+	 * @param Doku_Event $event
+	 *          the DokuWiki event. $event->data is a two-dimensional
+	 *          array of all meta headers. The keys are meta, link and script.
+	 * @param mixed      $param
+	 *
+	 * @see http://www.dokuwiki.org/devel:event:tpl_metaheader_output
+	 */
+	public function handleMetaheaderOutput(Doku_Event $event, $param): void {
+		// TODO maybe test for exist
+		$event->data ["link"] [] = array(
+			"type"  => "application/atom+xml",
+			"rel"   => "alternate",
+			"href"  => ml($this->getConf('media_georss')),
+			"title" => "Spatial ATOM Feed"
+		);
+		$event->data ["link"] [] = array(
+			"type"  => "application/vnd.google-earth.kml+xml",
+			"rel"   => "alternate",
+			"href"  => ml($this->getConf('media_kml')),
+			"title" => "KML Sitemap"
+		);
+	}
+
+	/**
+	 * Add spatialhelper popularity data.
+	 *
+	 * @param Doku_Event $event
+	 *          the DokuWiki event
+	 */
+	final public function popularity(Doku_Event $event): void {
+		global $updateVersion;
+		$plugin_info                                     = $this->getInfo();
+		$event->data['spatialhelper']['version']         = $plugin_info['date'];
+		$event->data['spatialhelper']['dwversion']       = $updateVersion;
+		$event->data['spatialhelper']['combinedversion'] = $updateVersion . '_' . $plugin_info['date'];
+	}
+
+	/**
+	 * Calculate a new coordinate based on start, distance and bearing
+	 *
+	 * @param $start array
+	 *               - start coordinate as decimal lat/lon pair
+	 * @param $dist  float
+	 *               - distance in kilometers
+	 * @param $brng  float
+	 *               - bearing in degrees (compass direction)
+	 */
+	private function geoDestination(array $start, float $dist, float $brng): array {
+		$lat1 = $this->toRad($start [0]);
+		$lon1 = $this->toRad($start [1]);
+		// http://en.wikipedia.org/wiki/Earth_radius
+		// average earth radius in km
+		$dist = $dist / 6371.01;
+		$brng = $this->toRad($brng);
+
+		$lon2 = $lon1 + atan2(sin($brng) * sin($dist) * cos($lat1), cos($dist) - sin($lat1) * sin($lat2));
+		$lon2 = fmod(($lon2 + 3 * M_PI), (2 * M_PI)) - M_PI;
+
+		return array(
+			$this->toDeg($lat2),
+			$this->toDeg($lon2)
+		);
+	}
+
+	private function toRad(float $deg): float {
+		return $deg * M_PI / 180;
+	}
+
+	private function toDeg(float $rad): float {
+		return $rad * 180 / M_PI;
+	}
 }