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<?php
/**
* @copyright Copyright (c) 2017 Arthur Schiwon <blizzz@arthur-schiwon.de>
*
* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
*
* @license GNU AGPL version 3 or any later version
*
* 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\Comments\Collaboration;
use OCP\Collaboration\AutoComplete\ISorter;
use OCP\Comments\ICommentsManager;
class CommentersSorter implements ISorter {
/** @var ICommentsManager */
private $commentsManager;
public function __construct(ICommentsManager $commentsManager) {
$this->commentsManager = $commentsManager;
}
public function getId() {
return 'commenters';
}
/**
* Sorts people who commented on the given item atop (descelating) of the
* others
*
* @param array $sortArray
* @param array $context
*/
public function sort(array &$sortArray, array $context) {
$commenters = $this->retrieveCommentsInformation($context['itemType'], $context['itemId']);
if(count($commenters) === 0) {
return;
}
foreach ($sortArray as $type => &$byType) {
if(!isset($commenters[$type])) {
continue;
}
// at least on PHP 5.6 usort turned out to be not stable. So we add
// the current index to the value and compare it on a draw
$i = 0;
$workArray = array_map(function ($element) use (&$i) {
return [$i++, $element];
}, $byType);
usort($workArray, function ($a, $b) use ($commenters, $type) {
$r = $this->compare($a[1], $b[1], $commenters[$type]);
if($r === 0) {
$r = $a[0] - $b[0];
}
return $r;
});
// and remove the index values again
$byType = array_column($workArray, 1);
}
}
/**
* @param $type
* @param $id
* @return array
*/
protected function retrieveCommentsInformation($type, $id) {
$comments = $this->commentsManager->getForObject($type, $id);
if(count($comments) === 0) {
return [];
}
$actors = [];
foreach ($comments as $comment) {
if(!isset($actors[$comment->getActorType()])) {
$actors[$comment->getActorType()] = [];
}
if(!isset($actors[$comment->getActorType()][$comment->getActorId()])) {
$actors[$comment->getActorType()][$comment->getActorId()] = 1;
} else {
$actors[$comment->getActorType()][$comment->getActorId()]++;
}
}
return $actors;
}
protected function compare(array $a, array $b, array $commenters) {
$a = $a['value']['shareWith'];
$b = $b['value']['shareWith'];
$valueA = isset($commenters[$a]) ? $commenters[$a] : 0;
$valueB = isset($commenters[$b]) ? $commenters[$b] : 0;
return $valueB - $valueA;
}
}
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