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<?php |
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/* |
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* This file is part of the Exchange Rate package, an RunOpenCode project. |
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* |
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* Implementation of exchange rate crawler for National Bank of Serbia, http://www.nbs.rs. |
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* |
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* (c) 2017 RunOpenCode |
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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 RunOpenCode\ExchangeRate\NationalBankOfSerbia\Source; |
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use RunOpenCode\ExchangeRate\Contract\RateInterface; |
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use RunOpenCode\ExchangeRate\Contract\SourceInterface; |
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use RunOpenCode\ExchangeRate\NationalBankOfSerbia\Api; |
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use RunOpenCode\ExchangeRate\NationalBankOfSerbia\Enum\RateType; |
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use RunOpenCode\ExchangeRate\NationalBankOfSerbia\Exception\RuntimeException; |
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use RunOpenCode\ExchangeRate\NationalBankOfSerbia\Exception\SourceNotAvailableException; |
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use RunOpenCode\ExchangeRate\NationalBankOfSerbia\Util\NbsBrowser; |
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use RunOpenCode\ExchangeRate\NationalBankOfSerbia\Parser\XmlParser; |
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use RunOpenCode\ExchangeRate\Utils\CurrencyCodeUtil; |
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/** |
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* Class WebPageSource |
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* |
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* Fetch rates from National Bank of Serbia website, as public user, without using their API service. |
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* |
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* @package RunOpenCode\ExchangeRate\NationalBankOfSerbia\Source |
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*/ |
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final class WebPageSource implements SourceInterface |
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{ |
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/** |
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* @var array |
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*/ |
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private $cache; |
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/** |
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* @var NbsBrowser |
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*/ |
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private $browser; |
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/** |
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* WebPageSource constructor. |
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* |
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* @param NbsBrowser|null $browser |
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*/ |
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public function __construct(NbsBrowser $browser = null) |
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{ |
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$this->browser = ($browser !== null) ? $browser : new NbsBrowser(); |
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$this->cache = array(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getName() |
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{ |
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return Api::NAME; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function fetch($currencyCode, $rateType = RateType::MEDIAN, \DateTime $date = null) |
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{ |
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$currencyCode = CurrencyCodeUtil::clean($currencyCode); |
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if (!Api::supports($currencyCode, $rateType)) { |
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throw new RuntimeException(sprintf('National Bank of Serbia does not supports currency code "%s" for rate type "%s".', $currencyCode, $rateType)); |
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} |
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if ($date === null) { |
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$date = new \DateTime('now'); |
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} |
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if (!array_key_exists($rateType, $this->cache)) { |
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try { |
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$this->load($date, $rateType); |
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} catch (\Exception $e) { |
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throw new SourceNotAvailableException(sprintf('Unable to load data from "%s" for "%s" of rate type "%s".', $this->getName(), $currencyCode, $rateType), 0, $e); |
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} |
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} |
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if (!array_key_exists($rateType, $this->cache)) { |
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throw new RuntimeException(sprintf('API Changed: source "%s" does not provide rate type "%s".', $this->getName(), $rateType)); |
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} |
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if (array_key_exists($currencyCode, $this->cache[$rateType])) { |
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return $this->cache[$rateType][$currencyCode]; |
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} |
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throw new RuntimeException(sprintf('API Changed: source "%s" does not provide currency code "%s" for rate type "%s".', $this->getName(), $currencyCode, $rateType)); |
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} |
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/** |
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* Load rates from National Bank of Serbia website. |
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* |
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* @param \DateTime $date |
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* @param string $rateType |
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* @throws SourceNotAvailableException |
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*/ |
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private function load(\DateTime $date, $rateType) |
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{ |
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$parser = new XmlParser(); |
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/** |
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* @var RateInterface[] $rates |
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*/ |
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$rates = $parser->parse($this->browser->getXmlDocument($date, $rateType)); |
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/** |
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* @var RateInterface $rate |
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*/ |
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foreach ($rates as $rate) { |
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if (!array_key_exists($rate->getRateType(), $this->cache)) { |
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$this->cache[$rate->getRateType()] = array(); |
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} |
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$this->cache[$rate->getRateType()][$rate->getCurrencyCode()] = $rate; |
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} |
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} |
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} |
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RunOpenCode /
exchange-rate-nbs
