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<?php |
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namespace h4kuna\Exchange\Caching; |
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use h4kuna\Exchange\Currency, |
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h4kuna\Exchange\Driver, |
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Nette\Utils; |
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class Cache implements ICache |
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{ |
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const FILE_CURRENT = 'current'; |
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/** @var string */ |
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private $temp; |
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/** @var Currency\ListRates[] */ |
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private $listRates; |
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/** @var array */ |
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private $allowedCurrencies = []; |
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private $refresh = '15:00'; |
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public function __construct($temp) |
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{ |
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$this->temp = $temp; |
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} |
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public function loadListRate(Driver\ADriver $driver, \DateTime $date = NULL) |
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{ |
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$file = $this->createFileInfo($driver, $date); |
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if (isset($this->listRates[$file->getPathname()])) { |
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return $this->listRates[$file->getPathname()]; |
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} |
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return $this->listRates[$file->getPathname()] = $this->createListRate($driver, $file, $date); |
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} |
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public function flushCache(Driver\ADriver $driver, \DateTime $date = NULL) |
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{ |
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$file = $this->createFileInfo($driver, $date); |
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$file->isFile() && unlink($file->getPathname()); |
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} |
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/** |
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* Invalid by cron. |
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* @param Driver\ADriver $driver |
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* @param \DateTime|NULL $date |
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*/ |
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public function invalidForce(Driver\ADriver $driver, \DateTime $date = NULL) |
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{ |
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$this->refresh = time() + Utils\DateTime::DAY; |
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$file = $this->createFileInfo($driver, $date); |
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$this->saveCurrencies($driver, $file, $date); |
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} |
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/** |
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* @param array $allowedCurrencies |
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* @return static |
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*/ |
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public function setAllowedCurrencies(array $allowedCurrencies) |
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{ |
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$this->allowedCurrencies = $allowedCurrencies; |
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return $this; |
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} |
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/** |
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* @param string $hour |
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* @return Storage |
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*/ |
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public function setRefresh($hour) |
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{ |
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$this->refresh = $hour; |
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return $this; |
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} |
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private function saveCurrencies(Driver\ADriver $driver, \SplFileInfo $file, \DateTime $date = NULL) |
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{ |
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$listRates = $driver->download($date, $this->allowedCurrencies); |
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file_put_contents(Utils\SafeStream::PROTOCOL . '://' . $file->getPathname(), serialize($listRates)); |
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if (self::isFileCurrent($file)) { |
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touch($file->getPathname(), $this->getRefresh()); |
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} |
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return $listRates; |
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} |
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private function createListRate(Driver\ADriver $driver, \SplFileInfo $file, \DateTime $date = NULL) |
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{ |
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if ($this->isFileValid($file)) { |
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Utils\FileSystem::createDir($file->getPath(), 0755); |
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$handle = fopen(Utils\SafeStream::PROTOCOL . '://' . $this->temp . DIRECTORY_SEPARATOR . 'lock', 'w'); |
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if ($this->isFileValid($file)) { |
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$listRate = $this->saveCurrencies($driver, $file, $date); |
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fclose($handle); |
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return $listRate; |
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} |
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fclose($handle); |
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} |
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return unserialize(file_get_contents($file->getPathname())); |
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} |
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/** |
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* @param \SplFileInfo $file |
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* @return bool |
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*/ |
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private function isFileValid(\SplFileInfo $file) |
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{ |
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return !$file->isFile() || (self::isFileCurrent($file) && $file->getMTime() < time()); |
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} |
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/** @return int */ |
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private function getRefresh() |
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{ |
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if (!is_int($this->refresh)) { |
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$this->refresh = (new \DateTime('today ' . $this->refresh))->format('U'); |
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if (time() >= $this->refresh) { |
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$this->refresh += Utils\DateTime::DAY; |
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} |
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} |
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return $this->refresh; |
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} |
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private function createFileInfo(Driver\ADriver $driver, \DateTime $date = NULL) |
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{ |
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$filename = $date === NULL ? self::FILE_CURRENT : $date->format('Y-m-d'); |
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return new \SplFileInfo($this->temp . DIRECTORY_SEPARATOR . $driver->getName() . DIRECTORY_SEPARATOR . $filename); |
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} |
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private static function isFileCurrent(\SplFileInfo $file) |
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{ |
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return $file->getFilename() === self::FILE_CURRENT; |
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} |
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} |
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h4kuna /
exchange
This check looks for assignments to scalar types that may be of the wrong type.
To ensure the code behaves as expected, it may be a good idea to add an explicit type cast.