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<?php |
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namespace rOpenDev\Google; |
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use Exception; |
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use rOpenDev\Cache\SimpleCacheFile; |
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use rOpenDev\Cache\SimpleCacheFile as fileCache; |
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trait CacheTrait |
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{ |
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/** @var mixed Contain the cache folder for SERP results * */ |
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protected string $cacheFolder = '/tmp'; |
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/** @var int Contain in seconds, the time cache is valid. Default 1 Day (86400). * */ |
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protected int $cacheExpireTime = 86400; |
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protected bool $previousRequestUsedCache = false; |
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public function setCacheExpireTime($seconds): self |
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{ |
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$this->cacheExpireTime = $seconds; |
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return $this; |
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} |
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public function previousRequestUsedCache(): bool |
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{ |
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return $this->previousRequestUsedCache; |
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} |
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/** |
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* @param string $cache |
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*/ |
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public function setCacheFolder(?string $cache): self |
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{ |
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$this->cacheFolder = null === $cache ? '' : $cache; |
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return $this; |
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} |
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/** |
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* Delete cache file for a query ($q). |
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* |
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* @throws \Exception Where self::$cache is not set |
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* |
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* @return int Number of files deleted |
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*/ |
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public function deleteCacheFiles(): int |
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{ |
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if (! $this->cacheFolder) { |
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throw new Exception('Cache Folder is not defined : you can\'t delete cache files'); |
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} |
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return $this->getCacheManager()->getMaintener()->deleteCacheFilesByPrefix(); |
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} |
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/** |
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* Return cache instance. |
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* |
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* @throws \Exception if the cache (folder, self::$cache via self::setCache) is not set |
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* |
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* @return \rOpenDev\cache\SimpleCacheFile |
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*/ |
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protected function getCacheManager(): ?SimpleCacheFile |
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{ |
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if (! $this->cacheFolder) { |
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return null; |
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} |
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$cachePrefix = md5($this->q).'_'; |
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return fileCache::instance($this->cacheFolder, $cachePrefix); |
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} |
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/** |
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* Return a cache key | A vérifier avec chrome. |
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*/ |
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protected function getCacheKey($url = null): string |
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{ |
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$url = $url ?: $this->generateGoogleSearchUrl(); |
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$url = preg_replace('/&(gbv=1|sei=([a-z0-9]+)(&|$))/i', '&', $url); |
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$url = trim($url, '&'); |
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return sha1($this->page.(int) $this->mobile.':'.$url); |
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} |
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protected function getCache($url): string |
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{ |
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if ($this->cacheFolder) { |
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$source = $this->getCacheManager()->get($this->getCacheKey($url), $this->cacheExpireTime); |
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$this->previousRequestUsedCache = true; |
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return $source; |
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} |
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return ''; |
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} |
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public function setCache($url, $source): void |
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{ |
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if ($this->cacheFolder) { |
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$this->getCacheManager()->set($this->getCacheKey($url), $source); |
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$this->previousRequestUsedCache = false; |
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} |
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} |
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} |
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RobinDev /
Google
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