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<?php |
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/* |
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* (c) Christian Gripp <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Core23\ShariffBundle\Service; |
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use Core23\ShariffBundle\Service\Exception\FetchException; |
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use Psr\Http\Message\RequestFactoryInterface; |
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use Psr\Http\Message\RequestInterface; |
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use Psr\Http\Message\ResponseInterface; |
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final class Facebook implements Service |
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{ |
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/** |
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* @var string |
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*/ |
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private $appid; |
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/** |
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* @var string |
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*/ |
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private $secret; |
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/** |
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* @var string|null |
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*/ |
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private $version; |
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public function __construct(string $appid, string $secret, ?string $version = null) |
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{ |
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$this->appid = $appid; |
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$this->secret = $secret; |
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$this->version = $version; |
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} |
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public function getCode(): string |
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{ |
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return 'facebook'; |
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} |
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public function createRequest(RequestFactoryInterface $factory, string $url): RequestInterface |
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{ |
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$accessToken = urlencode($this->appid).'|'.urlencode($this->secret); |
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$query = sprintf( |
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'https://graph.facebook.com/%s?id=%s&fields=engagement&access_token=%s', |
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$this->getVersionPrefix(), |
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urlencode($url), |
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$accessToken |
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); |
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return $factory->createRequest('GET', $query); |
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} |
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public function count(ResponseInterface $response): int |
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{ |
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$json = json_decode($response->getBody()->getContents(), true, 512, JSON_THROW_ON_ERROR); |
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if (!\array_key_exists('engagement', $json)) { |
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throw new FetchException('The "engagement" attributes could not be found', $response->getBody()->getContents()); |
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} |
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if (isset( |
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$json['engagement']['reaction_count'], |
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$json['engagement']['comment_count'], |
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$json['engagement']['share_count'] |
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)) { |
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return $json['engagement']['reaction_count'] |
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+ $json['engagement']['comment_count'] |
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+ $json['engagement']['share_count']; |
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} |
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return 0; |
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} |
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private function getVersionPrefix(): string |
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{ |
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if (null === $this->version) { |
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return ''; |
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} |
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return 'v'.ltrim($this->version, 'v').'/'; |
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} |
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} |
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