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<?php |
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namespace BilginPro\Agency\Aa; |
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use BilginPro\Agency\Aa\Exceptions\AuthenticationException; |
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use BilginPro\Agency\Aa\Exceptions\NoDataFoundException; |
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use Carbon\Carbon; |
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use GuzzleHttp; |
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/** |
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* Class Crawler |
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* @package BilginPro\Ajans\Aa |
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*/ |
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class Crawler |
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{ |
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/** |
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* Base URL of AA API |
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*/ |
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const API_BASE_URL = 'https://api.aa.com.tr'; |
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/** |
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* @var string |
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*/ |
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protected $user_name = ''; |
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/** |
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* @var string |
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*/ |
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protected $password = ''; |
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/** |
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* @var int |
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*/ |
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protected $summary_length = 150; |
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/** |
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* @var array |
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*/ |
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protected $attributes = [ |
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'filter_language' => '1', |
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'filter_type' => '1', |
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'limit' => '5', |
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]; |
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/** |
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* @var array |
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*/ |
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protected $auth = ['', '']; |
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/** |
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* Create a new Crawler Instance |
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*/ |
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public function __construct($config) |
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{ |
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$this->setParameters($config); |
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} |
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/** |
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* @param array $attributes |
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* @return array |
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*/ |
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public function crawl($attributes = []) |
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{ |
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$this->setAttributes($attributes); |
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$result = []; |
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usleep(500000); |
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$search = $this->search(); |
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usleep(500000); |
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foreach ($search->data->result as $item) { |
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$newsml = $this->document($item->id); |
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if (!empty($newsml)) { |
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$news = $this->newsmlToNews($newsml); |
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$result[] = $news; |
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} |
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usleep(500000); |
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} |
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return $result; |
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} |
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/** |
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* Creates a news object from NewsML SimpleXmlElement instance. |
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* @param \SimpleXMLElement $xml |
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* @return \stdClass |
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*/ |
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protected function newsmlToNews($xml) |
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{ |
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$news = new \stdClass(); |
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$xml->registerXPathNamespace("n", "http://iptc.org/std/nar/2006-10-01/"); |
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$news->code = (string)($xml->itemSet->newsItem['guid']); |
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$news->title = (string)$xml->itemSet->newsItem->contentMeta->headline; |
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$news->summary = (string)$xml->itemSet->newsItem->contentSet->inlineXML->nitf->body->{'body.head'}->abstract; |
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$news->content = (string)$xml->itemSet->newsItem->contentSet->inlineXML->nitf->body->{'body.content'}; |
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$news->created_at = (new Carbon($xml->itemSet->newsItem->itemMeta->versionCreated)) |
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->addHours(3)->format('d.m.Y H:i:s'); |
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$news->category = (string)$xml->xpath('//n:subject/n:name[@xml:lang="tr"]')[0]; |
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$news->city = ''; |
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if (isset($xml->xpath('//n:contentMeta/n:located[@type="cptype:city"]/n:name[@xml:lang="tr"]')[0])) { |
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$news->city = (string)$xml |
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->xpath('//n:contentMeta/n:located[@type="cptype:city"]/n:name[@xml:lang="tr"]')[0]; |
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} |
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$news->images = []; |
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if (isset($xml->xpath('//n:newsItem/n:itemMeta/n:link[@rel="irel:seeAlso"]')[0]['residref'])) { |
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$picture_id = (string)$xml->xpath('//n:newsItem/n:itemMeta/n:link[@rel="irel:seeAlso"]')[0]['residref']; |
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$news->images[] = $this->getDocumentLink($picture_id, 'print'); |
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} |
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return $news; |
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} |
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/** |
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* Creates document link for next requests. |
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* @param string $id |
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* @param string $format |
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* @return string |
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*/ |
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protected function getDocumentLink($id, $format) |
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{ |
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return self::API_BASE_URL . '/abone/document/' . $id . '/' . $format; |
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} |
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/** |
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* Fetches NewsML document, creates a SimpleXMLElement instance and returns it. |
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* @param $id |
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* @return null|\SimpleXMLElement |
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*/ |
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protected function document($id) |
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{ |
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$xml = null; |
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$url = self::API_BASE_URL . '/abone/document/' . $id . '/newsml29?v=2' . rand(1000, 9999); |
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$newsml = $this->fetchUrl($url, 'GET', ['auth' => $this->auth]); |
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$xml = simplexml_load_string($newsml); |
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return $xml; |
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} |
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/** |
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* Searchs documents with given filter attributes. |
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* @return mixed |
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*/ |
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protected function search() |
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{ |
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$res = $this->fetchUrl(self::API_BASE_URL . '/abone/search', 'POST', [ |
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'auth' => $this->auth, |
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'form_params' => $this->attributes |
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]); |
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$search = json_decode($res); |
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switch ($search->response->code) { |
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case 200: |
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break; |
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case 401: |
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throw new AuthenticationException; |
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default: |
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throw new NoDataFoundException; |
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} |
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return $search; |
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} |
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/** |
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* Creates short summary of the news, strip credits. |
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* @param string $text |
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* @return string |
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*/ |
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protected function createSummary($text) |
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{ |
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if (strpos($text, '(DHA)') > 0) { |
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$split = explode('(DHA)', $text); |
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if (count($split) > 1) { |
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$text = $split[1]; |
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$text = trim($text, ' \t\n\r\0\x0B-'); |
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} |
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} |
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$summary = (string)$this->shortenString(strip_tags($text), $this->summary_length); |
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return $summary; |
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} |
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/** |
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* Sets config parameters. |
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* @param $config |
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*/ |
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protected function setParameters($config) |
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{ |
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if (!is_array($config)) { |
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throw new \InvalidArgumentException('$config variable must be an array.'); |
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} |
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if (array_key_exists('user_name', $config)) { |
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$this->user_name = $config['user_name']; |
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} |
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if (array_key_exists('password', $config)) { |
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$this->password = $config['password']; |
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} |
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$this->auth = [$this->user_name, $this->password]; |
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} |
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/** |
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* Sets filter attributes. |
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* @param $attributes array |
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*/ |
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protected function setAttributes($attributes) |
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{ |
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foreach ($attributes as $key => $value) { |
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$this->attributes[$key] = $value; |
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} |
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} |
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/** |
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* Fethches given url and returns response as string. |
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* @param string $url |
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* @param string $method |
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* @param array $options |
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* |
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* @return string |
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*/ |
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protected function fetchUrl($url, $method = 'GET', $options = []) |
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{ |
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$client = new GuzzleHttp\Client(); |
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$res = $client->request($method, $url, $options); |
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if ($res->getStatusCode() == 200) { |
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return (string)$res->getBody(); |
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} |
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return ''; |
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} |
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/** |
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* Cuts the given string from the end of the appropriate word. |
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* @param string $str |
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* @param int $len |
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* @return string |
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*/ |
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protected function shortenString($str, $len) |
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{ |
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if (strlen($str) > $len) { |
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$str = rtrim(mb_substr($str, 0, $len, 'UTF-8')); |
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$str = substr($str, 0, strrpos($str, ' ')); |
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$str .= '...'; |
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$str = str_replace(',...', '...', $str); |
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} |
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return $str; |
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} |
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/** |
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* Converts a string to "Title Case" |
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* @param $str |
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* @return string |
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*/ |
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protected function titleCase($str) |
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{ |
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$str = mb_convert_case($str, MB_CASE_TITLE, 'UTF-8'); |
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return $str; |
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} |
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} |
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This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVar
assignment in line 1 and the$higher
assignment in line 2 are dead. The first because$myVar
is never used and the second because$higher
is always overwritten for every possible time line.