additional_plugins/serendipity_event_osm/serendipity_event_osm.php

<?php

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

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

class serendipity_event_osm extends serendipity_event
{
	function introspect(&$propbag)
	{
		$propbag->add('name', PLUGIN_EVENT_OSM_NAME);
		$propbag->add('description', PLUGIN_EVENT_OSM_DESCRIPTION);
		$propbag->add('copyright', 'GPL');
		$propbag->add('configuration', array('title', 'category_id', 'path', 'height', 'latitude', 'longitude', 'zoom'));
		$propbag->add('event_hooks', array('entries_header' => true));
		$propbag->add('author', PLUGIN_EVENT_OSM_AUTHOR);
		$propbag->add('version', PLUGIN_EVENT_OSM_VERSION);
		$propbag->add('requirements', [
			'php' => '7.0.0',
			'serendipity' => '2.3'
		]);
		$propbag->add('stackable', true);
		$propbag->add('groups', array('FRONTEND_ENTRY_RELATED'));
		$this->dependencies = array(
			'serendipity_event_geo_json' => 'keep'
		);
	}

	function generate_content(&$title)
	{
		$title = $this->get_config('title');
	}

	function get_page_categories()
	{
		global $serendipity;
		$vars = $serendipity['smarty']->get_template_vars() ?? [];
		switch ($vars['view'] ?? '') {
			case 'entry':
				return array_map(function($x) {
					return $x['categoryid'];
				}, $vars['entry']['categories']);
			case 'categories':
				return $serendipity['POST']['multiCat'] ?? [$vars['category']];
			case 'plugin':
			case 'start':
				return ($vars['staticpage_related_category_id'] ?? 0) !== '0'
					? [$vars['staticpage_related_category_id']]
					: [];
		}
		return [];
	}

	function event_hook($event, &$bag, &$eventData, $addData = null)
	{
		if ($event == 'entries_header') {
			$category_id = $this->get_config('category_id', 'any');
			$page_categories = $this->get_page_categories();
			if (
				$category_id === 'any'
				||
				($category_id === 'without' && empty($page_categories))
				||
				in_array($category_id, $page_categories)
			) {
				echo '    <div class="map" data-category="' . $category_id
					. '" data-path="' . addslashes($this->get_config('path', ''))
					. '" data-latitude="' . ((float)$this->get_config('latitude', 51.48165))
					. '" data-longitude="' . ((float)$this->get_config('longitude', 7.21648))
					. '" data-zoom="' . ((int)$this->get_config('zoom', 15))
					. '" style="height: ' . addslashes($this->get_config('height', '463px'))
					. '"></div>'.PHP_EOL;
			}
		}
	}

	function get_selectable_categories()
	{
		$categories = array('without' => PLUGIN_EVENT_OSM_CATEGORY_WITHOUT, 'any' => PLUGIN_EVENT_OSM_CATEGORY_ANY);
		$cats = serendipity_fetchCategories();
		if (is_array($cats)) {
			$cats = serendipity_walkRecursive($cats, 'categoryid', 'parentid', VIEWMODE_THREADED);
			foreach($cats as $cat) {
				$categories[$cat['categoryid']] = str_repeat('   ', $cat['depth']) . $cat['category_name'];
			}
		}
		return $categories;
	}

	function introspect_config_item($name, &$propbag)
	{
		global $serendipity;
		switch($name) {
			case 'title':
				$propbag->add('type',        'string');
				$propbag->add('name',        TITLE);
				$propbag->add('description', TITLE . ' (' . PLUGIN_EVENT_OSM_NOT_SHOWN . ')');
				$propbag->add('default',     PLUGIN_EVENT_OSM_NAME);
				break;
			case 'category_id':
				$propbag->add('type',          'select');
				$propbag->add('name',          PLUGIN_EVENT_OSM_CATEGORY);
				$propbag->add('description',   PLUGIN_EVENT_OSM_CATEGORY_DESCRIPTION);
				$propbag->add('select_values', $this->get_selectable_categories());
				$propbag->add('default',       'without');
				break;
			case 'path':
				$propbag->add('type',        'text');
				$propbag->add('name',        PLUGIN_EVENT_OSM_PATH);
				$propbag->add('description', PLUGIN_EVENT_OSM_PATH_DESCRIPTION);
				$propbag->add('default',     $serendipity['serendipityHTTPPath'] . $serendipity['uploadPath']);
				break;
			case 'height':
				$propbag->add('type',        'string');
				$propbag->add('name',        PLUGIN_EVENT_OSM_HEIGHT);
				$propbag->add('description', PLUGIN_EVENT_OSM_HEIGHT_DESCRIPTION);
				$propbag->add('default',     '463px');
				break;
			case 'latitude':
				$propbag->add('type',        'string');
				$propbag->add('name',        PLUGIN_EVENT_OSM_LAT);
				$propbag->add('description', PLUGIN_EVENT_OSM_LAT_DESCRIPTION);
				$propbag->add('default',     '51.48165');
				break;
			case 'longitude':
				$propbag->add('type',        'string');
				$propbag->add('name',        PLUGIN_EVENT_OSM_LONG);
				$propbag->add('description', PLUGIN_EVENT_OSM_LONG_DESCRIPTION);
				$propbag->add('default',     '7.21648');
				break;
			case 'zoom':
				$propbag->add('type',        'string');
				$propbag->add('name',        PLUGIN_EVENT_OSM_ZOOM);
				$propbag->add('description', PLUGIN_EVENT_OSM_ZOOM_DESCRIPTION);
				$propbag->add('default',     '15');
				break;
			default:
				return false;
		}
		return true;
	}
}