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<?php |
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/* |
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* This file is part of the ONGR package. |
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* |
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* (c) NFQ Technologies UAB <[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 ONGR\CurrencyExchangeBundle\Service; |
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use Doctrine\Common\Cache\CacheProvider; |
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use ONGR\CurrencyExchangeBundle\Document\CurrencyDocument; |
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use ONGR\CurrencyExchangeBundle\Document\RatesObject; |
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use ONGR\CurrencyExchangeBundle\Driver\CurrencyDriverInterface; |
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use ONGR\CurrencyExchangeBundle\Exception\RatesNotLoadedException; |
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use ONGR\ElasticsearchBundle\Collection\Collection; |
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use ONGR\ElasticsearchBundle\Service\Manager; |
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use Psr\Log\LoggerAwareTrait; |
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/** |
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* This class provides currency rates. |
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*/ |
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class CurrencyRatesService |
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{ |
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use LoggerAwareTrait; |
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/** |
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* @var null|array |
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*/ |
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public $rates = null; |
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/** |
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* @var CurrencyDriverInterface |
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*/ |
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private $driver; |
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/** |
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* @var CacheProvider |
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*/ |
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private $cache; |
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/** |
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* @var Manager |
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*/ |
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private $manager; |
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/** |
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* @param CurrencyDriverInterface $driver Currency exchange driver. |
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* @param Manager $manager ES Manager. |
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* @param CacheProvider $cache Cache pool. |
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*/ |
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public function __construct( |
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CurrencyDriverInterface $driver, |
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Manager $manager, |
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CacheProvider $cache |
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) { |
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$this->driver = $driver; |
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$this->manager = $manager; |
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$this->cache = $cache; |
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} |
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/** |
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* This method returns exchange rates. |
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* |
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* @param string|null $date |
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* |
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* @throws RatesNotLoadedException |
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* @return array |
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*/ |
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public function getRates($date = null) |
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{ |
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$date = $date ? $date : $this->getCurrentDate(); |
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if (isset($this->rates[$date])) { |
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return $this->rates[$date]; |
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} |
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$rates = $this->cache->fetch($date); |
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if ($rates) { |
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$this->rates[$date] = $rates; |
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return $rates; |
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} |
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$rates = $this->getCurrencyFromEs($date); |
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if ($rates) { |
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$this->rates[$date] = $rates; |
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return $rates; |
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} |
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$rates = $this->reloadRates($date); |
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if ($rates) { |
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$this->rates[$date] = $rates; |
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return $rates; |
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} |
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throw new RatesNotLoadedException( |
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'Currency rates for '.$date.' are not loaded and could not be loaded on demand' |
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); |
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} |
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/** |
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* Returns currency rates from ES. |
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* |
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* @param string|null $date |
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* |
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* @return array |
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*/ |
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private function getCurrencyFromEs($date = null) |
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{ |
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$date = $date ? $date : $this->getCurrentDate(); |
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$rates = []; |
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#TODO Should be used service instead of getRepository |
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$repository = $this->manager->getRepository('ONGRCurrencyExchangeBundle:CurrencyDocument'); |
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/** @var CurrencyDocument $currency */ |
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$currency = $repository->findOneBy(['date' => $date]); |
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if ($currency) { |
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/** @var RatesObject $rate */ |
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foreach ($currency->getRates() as $rate) { |
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$rates[$rate->getName()] = $rate->getValue(); |
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} |
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// $this->logger && $this->logger->info('Rates returned from ES.'); |
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return $rates; |
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} |
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return null; |
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} |
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/** |
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* Reloads rates using given driver. |
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* |
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* @param string|null $date |
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* |
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* @return array|null |
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*/ |
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public function reloadRates($date = null) |
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{ |
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$date = $date ? $date : $this->getCurrentDate(); |
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$rawRates = $this->driver->getRates($date); |
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if ($rawRates) { |
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$this->rates[$date] = $rawRates; |
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$this->cache->save($date, $rawRates); |
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$repository = $this->manager->getRepository('ONGRCurrencyExchangeBundle:CurrencyDocument'); |
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/** @var CurrencyDocument $currency */ |
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$document = $repository->findOneBy(['date' => $date]); |
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if (!$document) { |
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$document = new CurrencyDocument(); |
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} |
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$rates = []; |
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foreach ($rawRates as $rate => $value) { |
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$rateObj = new RatesObject(); |
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$rateObj->setName($rate); |
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$rateObj->setValue($value); |
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$rates[] = $rateObj; |
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} |
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$document->setRates(new Collection($rates)); |
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$this->manager->persist($document); |
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$this->manager->commit(); |
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return $rawRates; |
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} |
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return null; |
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} |
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/** |
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* Returns actual base currency name. |
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* |
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* @return string |
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*/ |
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public function getBaseCurrency() |
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{ |
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return $this->driver->getBaseCurrency(); |
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} |
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/** |
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* Returns formatted current date |
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* |
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* @returns string |
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*/ |
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private function getCurrentDate() |
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{ |
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return date('Y-m-d'); |
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} |
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} |
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