<?php
/*
 * Copyright (c) 2008-2021 Mark C. Prins <mprins@users.sf.net>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 * @phpcs:disable Squiz.Classes.ValidClassName.NotCamelCaps
 */

/**
 * DokuWiki Plugin openlayersmap (staticmap Helper Component).
 * This provides the interface to generate a static map based on predefined OSM layers.
 *
 * @author Mark Prins
 */
class helper_plugin_openlayersmap_staticmap extends DokuWiki_Plugin {
    /** maximum width of the resulting image. */
    private $maxWidth = 1024;
    /** maximum heigth of the resulting image. */
    private $maxHeight = 1024;

    /**
     * Provide metadata of the public methods of this class.
     *
     * @return array Information to all provided methods.
     */
    public function getMethods(): array {
        $result   = array();
        $result[] = array(
            'name'   => 'getMap',
            'desc'   => 'returns url to the image',
            'params' => array(
                'lat'     => 'float',
                'lon'     => 'float',
                'zoom'    => 'integer',
                'size'    => 'string',
                'maptype' => 'string',
                'markers' => 'string',
                'gpx'     => 'string',
                'kml'     => 'string',
                'geojson' => 'string',
                'apikey'  => 'string'
            ),
            'return' => array('image' => 'string'),
        );
        return $result;
    }

    /**
     * Create the map.
     *
     * @param float  $lat     the latitude of the map's center, eg. 40.714728
     * @param float  $lon     the longitude of the map's center, eg -73.998672
     * @param int    $zoom    the zoom level in the tile cache, eg. 14
     * @param string $size    the size in WxH px, eg. 512x512
     * @param string $maptype the maptype, eg. cycle
     * @param array  $markers associative array of markers, array('lat'=>$lat,'lon'=>$lon,'type'=>$iconStyle),
     *                        eg. array('lat'=>40.702147,'lon'=>-74.015794,'type'=>lightblue1);
     * @param string $gpx     media link
     * @param string $kml     media link
     * @param string $geojson media link
     * @param string $apikey  optional API key eg. for Thunderforest maps
     *
     * @return string
     */
    public function getMap(
        float $lat,
        float $lon,
        int $zoom,
        string $size,
        string $maptype,
        array $markers,
        string $gpx,
        string $kml,
        string $geojson,
        string $apikey = ''
    ): string {
        global $conf;
        // dbglog($markers,'helper_plugin_openlayersmap_staticmap::getMap: markers :');

        // normalize zoom
        $zoom = $zoom ?: 0;
        if($zoom > 18) {
            $zoom = 18;
        }
        // normalize WxH
        list($width, $height) = explode('x', $size);
        $width = (int) $width;
        if($width > $this->maxWidth) {
            $width = $this->maxWidth;
        }
        $height = (int) $height;
        if($height > $this->maxHeight) {
            $height = $this->maxHeight;
        }

        // cleanup/validate gpx/kml
        $kml = $this->mediaIdToPath($kml);
        // dbglog($kml,'helper_plugin_openlayersmap_staticmap::getMap: kml file:');
        $gpx = $this->mediaIdToPath($gpx);
        // dbglog($gpx,'helper_plugin_openlayersmap_staticmap::getMap: gpx file:');
        $geojson = $this->mediaIdToPath($geojson);

        // create map
        require_once DOKU_PLUGIN . 'openlayersmap/StaticMap.php';
        $map = new StaticMap(
            $lat, $lon, $zoom, $width, $height, $maptype,
            $markers, $gpx, $kml, $geojson, $conf['mediadir'], $conf['cachedir'],
            $this->getConf('autoZoomMap'), $apikey
        );

        // return the media id url
        // $mediaId = str_replace('/', ':', $map->getMap());
        // if($this->startsWith($mediaId,':')) {
        //     $mediaId = substr($mediaId, 1);
        // }
        // return $mediaId;
        return str_replace('/', ':', $map->getMap());
    }

    /**
     * Constructs the path to a file.
     * @param string $id the DW media id
     * @return string the path to the file
     */
    private function mediaIdToPath(string $id): string {
        global $conf;
        if(empty($id)) {
            return "";
        }
        $id = str_replace(array("[[", "]]"), "", $id);
        if((strpos($id, ':') === 0)) {
            $id = substr($id, 1);
        }
        $id = str_replace(":", "/", $id);
        return $conf['mediadir'] . '/' . $id;
    }
}