memories/lib/Controller/LocationController.php

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<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2022 Varun Patil <radialapps@gmail.com>
* @author Varun Patil <radialapps@gmail.com>
* @license AGPL-3.0-or-later
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
namespace OCA\Memories\Controller;
use OCP\AppFramework\Http;
use OCP\AppFramework\Http\JSONResponse;
class LocationController extends ApiBase
{
/**
* @NoAdminRequired
*
* @PublicPage
*
* @NoCSRFRequired
*/
public function clusters(): JSONResponse
{
// Get the folder to show
try {
$uid = $this->getUID();
} catch (\Exception $e) {
return new JSONResponse(['message' => $e->getMessage()], Http::STATUS_PRECONDITION_FAILED);
}
// Get the folder to show
$root = null;
try {
$root = $this->getRequestRoot();
} catch (\Exception $e) {
return new JSONResponse(['message' => $e->getMessage()], Http::STATUS_NOT_FOUND);
}
// Just check bound parameters but not use them; they are used in transformation
$minLat = $this->request->getParam('minLat');
$maxLat = $this->request->getParam('maxLat');
$minLng = $this->request->getParam('minLng');
$maxLng = $this->request->getParam('maxLng');
if (!$minLat || !$maxLat || !$minLng || !$maxLng) {
return new JSONResponse(['message' => 'Parameters missing'], Http::STATUS_PRECONDITION_FAILED);
}
// Zoom level is used to determine the size of boxes
$zoomLevel = $this->request->getParam('zoom');
if (!$zoomLevel || !is_numeric($zoomLevel)) {
return new JSONResponse(['message' => 'Invalid zoom level'], Http::STATUS_PRECONDITION_FAILED);
}
// A tweakable parameter to determine the number of boxes in the map
$clusterDensity = 3;
$boxSize = 180.0 / (2 ** $zoomLevel * $clusterDensity);
try {
$clusters = $this->timelineQuery->getMapClusters(
$boxSize,
$root,
$uid,
$this->isRecursive(),
$this->isArchive(),
$this->getTransformations(true),
);
return new JSONResponse($clusters);
} catch (\Exception $e) {
return new JSONResponse(['message' => $e->getMessage()], Http::STATUS_INTERNAL_SERVER_ERROR);
}
}
}