memories/lib/Controller/MapController.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 OCA\Memories\Exceptions;
use OCA\Memories\Util;
use OCP\AppFramework\Http;
use OCP\AppFramework\Http\JSONResponse;
class MapController extends GenericApiController
{
/**
* @NoAdminRequired
*/
public function clusters(string $bounds, string $zoom): Http\Response
{
return Util::guardEx(function () use ($bounds, $zoom) {
// Make sure we have bounds and zoom level
// Zoom level is used to determine the grid length
if (!$bounds || !$zoom || !is_numeric($zoom)) {
throw Exceptions::MissingParameter('bounds or zoom');
}
// A tweakable parameter to determine the number of boxes in the map
// Note: these parameters need to be changed in MapSplitMatter.vue as well
$clusterDensity = 1;
$gridLen = 180.0 / (2 ** $zoom * $clusterDensity);
$clusters = $this->timelineQuery->getMapClusters($gridLen, $bounds);
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// Get previews for each cluster
$clusterIds = array_map(fn ($cluster) => (int) $cluster['id'], $clusters);
$previews = $this->timelineQuery->getMapClusterPreviews($clusterIds);
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// Merge the responses
$fileMap = [];
foreach ($previews as &$preview) {
$fileMap[$preview['mapcluster']] = $preview;
}
foreach ($clusters as &$cluster) {
$cluster['preview'] = $fileMap[$cluster['id']] ?? null;
}
return new JSONResponse($clusters);
});
}
}