meilisearch/Classes/Domain/Search/LastSearches/LastSearchesRepository.php

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2021-04-17 00:26:33 +02:00
<?php
namespace WapplerSystems\Meilisearch\Domain\Search\LastSearches;
/***************************************************************
* Copyright notice
*
* (c) 2010-2017 dkd Internet Service GmbH <solr-support@dkd.de>
* All rights reserved
*
* This script is part of the TYPO3 project. The TYPO3 project is
* free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* The GNU General Public License can be found at
* http://www.gnu.org/copyleft/gpl.html.
*
* This script 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 General Public License for more details.
*
* This copyright notice MUST APPEAR in all copies of the script!
***************************************************************/
use WapplerSystems\Meilisearch\System\Records\AbstractRepository;
class LastSearchesRepository extends AbstractRepository
{
/**
* @var string
*/
protected $table = 'tx_meilisearch_last_searches';
/**
* Finds the last searched keywords from the database
*
* @param int $limit
* @return array An array containing the last searches of the current user
*/
public function findAllKeywords($limit = 10) : array
{
$lastSearchesResultSet = $this->getLastSearchesResultSet($limit);
if (empty($lastSearchesResultSet)) {
return [];
}
$lastSearches = [];
foreach ($lastSearchesResultSet as $row) {
$lastSearches[] = html_entity_decode($row['keywords'], ENT_QUOTES, 'UTF-8');
}
return $lastSearches;
}
/**
* Returns all last searches
*
* @param $limit
* @return array
*/
protected function getLastSearchesResultSet($limit) : array
{
$queryBuilder = $this->getQueryBuilder();
return $queryBuilder
->select('keywords')
->addSelectLiteral(
$queryBuilder->expr()->max('tstamp','maxtstamp')
)
->from($this->table)
// There is no support for DISTINCT, a ->groupBy() has to be used instead.
->groupBy('keywords')
->orderBy('maxtstamp', 'DESC')
->setMaxResults($limit)->execute()->fetchAll();
}
/**
* Adds keywords to last searches or updates the oldest row by given limit.
*
* @param string $lastSearchesKeywords
* @param int $lastSearchesLimit
* @return void
*/
public function add(string $lastSearchesKeywords, int $lastSearchesLimit)
{
$nextSequenceId = $this->resolveNextSequenceIdForGivenLimit($lastSearchesLimit);
$rowsCount = $this->count();
if ($nextSequenceId < $rowsCount) {
$this->update([
'sequence_id' => $nextSequenceId,
'keywords' => $lastSearchesKeywords
]);
return;
}
$queryBuilder = $this->getQueryBuilder();
$queryBuilder
->insert($this->table)
->values([
'sequence_id' => $nextSequenceId,
'keywords' => $lastSearchesKeywords,
'tstamp' => time()
])
->execute();
}
/**
* Resolves next sequence id by given last searches limit.
*
* @param int $lastSearchesLimit
* @return int
*/
protected function resolveNextSequenceIdForGivenLimit(int $lastSearchesLimit) : int
{
$nextSequenceId = 0;
$queryBuilder = $this->getQueryBuilder();
$result = $queryBuilder->select('sequence_id')
->from($this->table)
->orderBy('tstamp', 'DESC')
->setMaxResults(1)
->execute()->fetch();
if (!empty($result)) {
$nextSequenceId = ($result['sequence_id'] + 1) % $lastSearchesLimit;
}
return $nextSequenceId;
}
/**
* Updates last searches row by using sequence_id from given $lastSearchesRow array
*
* @param array $lastSearchesRow
* @return void
* @throws \InvalidArgumentException
*/
protected function update(array $lastSearchesRow)
{
$queryBuilder = $this->getQueryBuilder();
$affectedRows = $queryBuilder
->update($this->table)
->where(
$queryBuilder->expr()->eq('sequence_id', $queryBuilder->createNamedParameter($lastSearchesRow['sequence_id']))
)
->set('tstamp', time())
->set('keywords', $lastSearchesRow['keywords'])
->execute();
if ($affectedRows < 1) {
throw new \InvalidArgumentException(vsprintf('By trying to update last searches row with values "%s" nothing was updated, make sure the given "sequence_id" exists in database.', [\json_encode($lastSearchesRow)]), 1502717923);
}
}
}