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<?php |
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/* |
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* This file is part of the SocialShare package. |
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* |
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* (c) Kévin Dunglas <[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 SocialShare; |
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use Doctrine\Common\Cache\Cache; |
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use SocialShare\Provider\ProviderInterface; |
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/** |
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* SocialShare. |
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* |
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* @author Kévin Dunglas <[email protected]> |
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*/ |
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class SocialShare |
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{ |
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/** |
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* @var Cache |
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*/ |
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private $cache; |
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/** |
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* @var ProviderInterface[] |
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*/ |
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private $providers = array(); |
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/** |
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* @var array |
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*/ |
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private $toUpdate = array(); |
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/** |
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* @param Cache $cache |
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*/ |
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public function __construct(Cache $cache) |
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{ |
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$this->cache = $cache; |
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} |
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/** |
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* Registers a provider. |
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* |
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* @param ProviderInterface $provider |
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* @param int|\DateInterval $lifeTime Life time in seconds or a \DateInterval instance |
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*/ |
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public function registerProvider(ProviderInterface $provider, $lifeTime = 3600) |
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{ |
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if (!$lifeTime instanceof \DateInterval) { |
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$lifeTime = new \DateInterval(sprintf('PT%dS', $lifeTime)); |
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} |
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$this->providers[$provider->getName()] = array('provider' => $provider, 'lifeTime' => $lifeTime); |
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} |
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/** |
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* Gets the sharing links for the given provider and url. |
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* |
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* @param string $providerName |
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* @param string $url |
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* @param array $options |
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* |
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* @throws \RuntimeException |
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* |
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* @return string |
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*/ |
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public function getLink($providerName, $url, array $options = array()) |
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{ |
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$this->checkProvider($providerName); |
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return $this->providers[$providerName]['provider']->getLink($url, $options); |
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} |
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/** |
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* Gets the number of share of the given URL on the given provider. |
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* |
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* @param string $providerName |
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* @param string $url |
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* @param bool $delayUpdate |
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* |
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* @throws \RuntimeException |
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* |
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* @return int |
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*/ |
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public function getShares($providerName, $url, $delayUpdate = false) |
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{ |
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$this->checkProvider($providerName); |
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$id = $this->getId($providerName, $url); |
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$lifeTime = $this->providers[$providerName]['lifeTime']; |
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$now = new \DateTime(); |
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$dataFromCache = $this->cache->fetch($id); |
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$shares = isset($dataFromCache[0]) ? $dataFromCache[0] : false; |
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$expired = isset($dataFromCache[1]) && $dataFromCache[1]->add($lifeTime) < $now; |
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if (!$delayUpdate && (false === $shares || $expired)) { |
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$shares = $this->providers[$providerName]['provider']->getShares($url); |
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$this->cache->save($id, array($shares, $now)); |
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} else { |
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if ($delayUpdate && (false === $shares || $expired)) { |
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$this->toUpdate[$providerName][] = $url; |
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} |
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$shares = intval($shares); |
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} |
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return $shares; |
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} |
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/** |
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* Gets the total number of share of the given URL for all providers. |
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* |
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* @param string $url |
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* |
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* @throws \RuntimeException |
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* |
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* @return int |
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*/ |
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public function getSharesTotal($url) |
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{ |
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$shares = 0; |
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foreach ($this->providers as $providerName => $provider) { |
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$shares += $this->getShares($providerName, $url); |
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} |
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return $shares; |
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} |
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/** |
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* Updates delayed URLs. |
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*/ |
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public function update() |
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{ |
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$now = new \DateTime(); |
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foreach ($this->toUpdate as $providerName => $urls) { |
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foreach ($urls as $url) { |
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$shares = $this->providers[$providerName]['provider']->getShares($url); |
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$this->cache->save($this->getId($providerName, $url), array($shares, $now)); |
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} |
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} |
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} |
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/** |
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* Checks if the provider is registered. |
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* |
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* @param string $providerName |
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* |
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* @throws \RuntimeException |
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*/ |
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private function checkProvider($providerName) |
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{ |
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if (!isset($this->providers[$providerName])) { |
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throw new \RuntimeException(sprintf('Unknown provider "%s".', $providerName)); |
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} |
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} |
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/** |
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* Gets the ID corresponding to this provider name and URL. |
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* |
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* @param string $providerName |
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* @param string $url |
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* |
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* @return string |
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*/ |
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private function getId($providerName, $url) |
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{ |
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return sprintf('%s_%s', $providerName, $url); |
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} |
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} |
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dunglas /
php-socialshare
