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<?php |
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/** |
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* webtrees: online genealogy |
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* Copyright (C) 2021 webtrees development team |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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declare(strict_types=1); |
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namespace Fisharebest\Webtrees\Http\RequestHandlers; |
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use Fisharebest\Webtrees\Gedcom; |
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use Fisharebest\Webtrees\PlaceLocation; |
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use Fisharebest\Webtrees\Services\MapDataService; |
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use Illuminate\Database\Capsule\Manager as DB; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Psr\Http\Server\RequestHandlerInterface; |
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use function addcslashes; |
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use function array_reverse; |
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use function array_unshift; |
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use function count; |
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use function implode; |
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use function preg_replace; |
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use function response; |
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/** |
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* Export geographic data. |
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*/ |
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class MapDataExportGeoJson implements RequestHandlerInterface |
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{ |
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/** @var MapDataService */ |
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private $map_data_service; |
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/** |
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* Dependency injection. |
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* |
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* @param MapDataService $map_data_service |
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*/ |
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public function __construct(MapDataService $map_data_service) |
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{ |
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$this->map_data_service = $map_data_service; |
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} |
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/** |
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* @param ServerRequestInterface $request |
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* |
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* @return ResponseInterface |
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*/ |
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public function handle(ServerRequestInterface $request): ResponseInterface |
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{ |
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$parent_id = $request->getAttribute('parent_id'); |
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if ($parent_id === null) { |
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$parent = new PlaceLocation(''); |
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} else { |
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$parent = $this->map_data_service->findById((int) $parent_id); |
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} |
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for ($tmp = $parent, $hierarchy = []; $tmp->id() !== null; $tmp = $tmp->parent()) { |
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$hierarchy[] = $tmp->locationName(); |
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} |
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// Create the file name |
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$filename = preg_replace('/[^\p{L}]+/u', '-', $hierarchy[0] ?? 'Global') . '.geojson'; |
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// Recursively search for child places |
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$features = []; |
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$queue = [[ |
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$parent->id(), array_reverse($hierarchy), $parent->latitude(), $parent->longitude() |
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]]; |
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while ($queue !== []) { |
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[$id, $hierarchy, $latitude, $longitude] = array_shift($queue); |
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if ($latitude !== null && !$longitude !== null) { |
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$features[] = [ |
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'type' => 'Feature', |
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'geometry' => [ |
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'type' => 'Point', |
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'coordinates' => [ |
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$longitude, |
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$latitude, |
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], |
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], |
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'properties' => [ |
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'name' => implode(Gedcom::PLACE_SEPARATOR, array_reverse($hierarchy)), |
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], |
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]; |
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} |
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$query = DB::table('place_location'); |
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// Data for the next level. |
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if ($id === null) { |
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$query->whereNull('parent_id'); |
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} else { |
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$query->where('parent_id', '=', $id); |
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} |
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$rows = $query |
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->orderBy('place', 'DESC') |
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->select(['id', 'place', 'latitude', 'longitude']) |
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->get(); |
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$next_level = count($hierarchy); |
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foreach ($rows as $row) { |
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$hierarchy[$next_level] = $row->place; |
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array_unshift($queue, [$row->id, $hierarchy, $row->latitude, $row->longitude]); |
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} |
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} |
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$geojson = [ |
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'type' => 'FeatureCollection', |
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'features' => $features, |
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]; |
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$filename = addcslashes($filename, '"'); |
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return response($geojson) |
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->withHeader('Content-Type', 'application/vnd.geo+json') |
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->withHeader('Content-Disposition', 'attachment; filename="' . $filename . '"'); |
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} |
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} |
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fisharebest /
webtrees
