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<?php |
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/** |
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* This file is part of dispositif/wikibot application |
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* 2019 © Philippe M. <[email protected]> |
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* For the full copyright and MIT license information, please view the LICENSE file. |
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*/ |
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declare(strict_types=1); |
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namespace App\Infrastructure; |
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use Exception; |
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use GuzzleHttp\Client; |
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use Normalizer; |
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/** |
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* dirty scratch WikiData read requests |
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* Class WikidataAdapter |
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* |
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* @package App\Infrastructure |
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*/ |
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class WikidataAdapter |
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{ |
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private $client; |
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public function __construct(?Client $client = null) |
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{ |
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if (null === $client) { |
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// lazy dependency factory :) |
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$this->client = new Client(['timeout' => 5]); |
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} else { |
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$this->client = $client; |
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} |
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} |
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/** |
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* Get WD item, sitelink, VIAF from search by ISNI (author) |
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* |
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* @param string $isni |
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* |
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* @return null |
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* @throws Exception |
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*/ |
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public function searchByISNI(string $isni): ?array |
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{ |
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if (!$this->ISNIvalide($isni)) { |
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new Exception('Invalid format for ISNI'); |
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} |
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$sparql = sprintf( |
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'SELECT distinct ?item ?itemLabel ?article ?isni ?viaf WHERE { |
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?item wdt:P213 "%s" . |
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?item wdt:P213 ?isni. |
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?item wdt:P214 ?viaf. |
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?article schema:about ?item ; |
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schema:isPartOf <https://fr.wikipedia.org/> |
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SERVICE wikibase:label { |
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bd:serviceParam wikibase:language "fr" . |
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} |
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}', |
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$isni |
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); |
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$result = $this->sparqlRequest($sparql); |
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if ($result && isset($result['results']) && isset($result['results']) |
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&& isset($result['results']['bindings']) |
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&& count($result['results']['bindings']) === 1 |
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) { |
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return $result['results']['bindings'][0]; |
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} |
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return null; |
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} |
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/** |
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* @param string $sparql |
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* |
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* @return array|null |
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* @throws Exception |
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*/ |
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private function sparqlRequest(string $sparql): ?array |
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{ |
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$url = 'https://query.wikidata.org/bigdata/namespace/wdq/sparql?'.http_build_query( |
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[ |
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'format' => 'json', |
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'query' => urlencode($sparql), |
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] |
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); |
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$response = $this->client->get($url); |
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// todo : catch + return null ? |
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if (200 !== $response->getStatusCode()) { |
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throw new Exception('response error '.$response->getStatusCode()); |
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} |
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$json = $response->getBody()->getContents(); |
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if (empty($json)) { |
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return null; |
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} |
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$json = Normalizer::normalize($json); |
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return json_decode($json, true) ?? null; |
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} |
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/** |
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* todo move |
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* |
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* @param string $isni |
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* |
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* @return bool |
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*/ |
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private function ISNIvalide(string $isni): bool |
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{ |
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return (!preg_match('#^0000(000[0-4])([0-9]{4})([0-9]{3}[0-9X])$#', $isni)) ? false : true; |
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} |
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} |
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Dispositif /
Wikibot
