157 lines
5.0 KiB
PHP
157 lines
5.0 KiB
PHP
<?php
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namespace WapplerSystems\Meilisearch\Domain\Search\LastSearches;
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/***************************************************************
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* Copyright notice
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*
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* (c) 2010-2017 dkd Internet Service GmbH <solr-support@dkd.de>
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* All rights reserved
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*
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* This script is part of the TYPO3 project. The TYPO3 project is
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* 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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*
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* The GNU General Public License can be found at
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* http://www.gnu.org/copyleft/gpl.html.
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*
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* This script 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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*
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* This copyright notice MUST APPEAR in all copies of the script!
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***************************************************************/
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use WapplerSystems\Meilisearch\System\Records\AbstractRepository;
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class LastSearchesRepository extends AbstractRepository
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{
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/**
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* @var string
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*/
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protected $table = 'tx_meilisearch_last_searches';
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/**
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* Finds the last searched keywords from the database
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*
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* @param int $limit
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* @return array An array containing the last searches of the current user
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*/
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public function findAllKeywords($limit = 10) : array
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{
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$lastSearchesResultSet = $this->getLastSearchesResultSet($limit);
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if (empty($lastSearchesResultSet)) {
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return [];
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}
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$lastSearches = [];
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foreach ($lastSearchesResultSet as $row) {
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$lastSearches[] = html_entity_decode($row['keywords'], ENT_QUOTES, 'UTF-8');
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}
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return $lastSearches;
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}
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/**
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* Returns all last searches
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*
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* @param $limit
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* @return array
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*/
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protected function getLastSearchesResultSet($limit) : array
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{
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$queryBuilder = $this->getQueryBuilder();
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return $queryBuilder
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->select('keywords')
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->addSelectLiteral(
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$queryBuilder->expr()->max('tstamp','maxtstamp')
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)
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->from($this->table)
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// There is no support for DISTINCT, a ->groupBy() has to be used instead.
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->groupBy('keywords')
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->orderBy('maxtstamp', 'DESC')
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->setMaxResults($limit)->execute()->fetchAll();
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}
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/**
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* Adds keywords to last searches or updates the oldest row by given limit.
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*
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* @param string $lastSearchesKeywords
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* @param int $lastSearchesLimit
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* @return void
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*/
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public function add(string $lastSearchesKeywords, int $lastSearchesLimit)
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{
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$nextSequenceId = $this->resolveNextSequenceIdForGivenLimit($lastSearchesLimit);
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$rowsCount = $this->count();
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if ($nextSequenceId < $rowsCount) {
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$this->update([
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'sequence_id' => $nextSequenceId,
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'keywords' => $lastSearchesKeywords
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]);
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return;
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}
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$queryBuilder = $this->getQueryBuilder();
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$queryBuilder
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->insert($this->table)
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->values([
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'sequence_id' => $nextSequenceId,
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'keywords' => $lastSearchesKeywords,
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'tstamp' => time()
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])
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->execute();
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}
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/**
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* Resolves next sequence id by given last searches limit.
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*
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* @param int $lastSearchesLimit
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* @return int
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*/
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protected function resolveNextSequenceIdForGivenLimit(int $lastSearchesLimit) : int
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{
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$nextSequenceId = 0;
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$queryBuilder = $this->getQueryBuilder();
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$result = $queryBuilder->select('sequence_id')
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->from($this->table)
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->orderBy('tstamp', 'DESC')
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->setMaxResults(1)
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->execute()->fetch();
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if (!empty($result)) {
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$nextSequenceId = ($result['sequence_id'] + 1) % $lastSearchesLimit;
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}
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return $nextSequenceId;
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}
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/**
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* Updates last searches row by using sequence_id from given $lastSearchesRow array
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*
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* @param array $lastSearchesRow
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* @return void
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* @throws \InvalidArgumentException
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*/
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protected function update(array $lastSearchesRow)
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{
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$queryBuilder = $this->getQueryBuilder();
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$affectedRows = $queryBuilder
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->update($this->table)
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->where(
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$queryBuilder->expr()->eq('sequence_id', $queryBuilder->createNamedParameter($lastSearchesRow['sequence_id']))
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)
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->set('tstamp', time())
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->set('keywords', $lastSearchesRow['keywords'])
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->execute();
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if ($affectedRows < 1) {
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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);
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}
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}
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}
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