/**
* @param CurrencyPair $currencyPair
* @return Rate
* @throws Exception
*/
public function fetchRate(CurrencyPair $currencyPair)
{
$providers = [$this->mainProvider => CurrencyRateProvider::getByName($this->mainProvider), $this->secondProvider => CurrencyRateProvider::getByName($this->secondProvider)];
if (count($providers) !== 2) {
throw new Exception('One of providers not found');
}
$rates = [];
/** @var CurrencyRateProvider $provider */
foreach ($providers as $name => $provider) {
if (null === $provider) {
throw new Exception("Provider \"{$name}\" not found!");
}
try {
$providerHandler = $provider->getImplementationInstance($this->httpAdapter);
if ($providerHandler !== null) {
$swap = new Swap($providerHandler);
$rate = $swap->quote($currencyPair->getBaseCurrency() . '/' . $currencyPair->getQuoteCurrency())->getValue();
$rates[] = floatval($rate);
} else {
throw new Exception('Provider "' . $provider->name . '" not found');
}
} catch (\Exception $e) {
throw new Exception('One or more currency providers did not return result');
}
}
$min = min($rates);
$max = max($rates);
return new Rate($max - $min >= $max * $this->criticalDifference / 100 ? $max : $rates[0], new \DateTime());
}
/**
* @throws \Exception
*/
public function actionUpdate()
{
$mainCurrency = Currency::getMainCurrency();
if ($mainCurrency === null) {
throw new \Exception("Main currency is not set");
}
$currencies = Currency::getUpdateable();
$httpAdapter = new CurlHttpAdapter();
/** @var Currency $currency */
foreach ($currencies as $currency) {
/** @var CurrencyRateProvider $providerModel */
$providerModel = $currency->rateProvider;
if (null !== $providerModel) {
try {
$provider = $providerModel->getImplementationInstance($httpAdapter);
if (null !== $provider) {
$swap = new Swap($provider);
$rate = $swap->quote($currency->iso_code . '/' . $mainCurrency->iso_code)->getValue();
$currency->convert_rate = floatval($rate);
if ($currency->additional_rate > 0) {
// additional rate is in %
$currency->convert_rate *= 1 + $currency->additional_rate / 100;
}
if ($currency->additional_nominal !== 0) {
$currency->convert_rate += $currency->additional_nominal;
}
$currency->save();
echo $currency->iso_code . '/' . $mainCurrency->iso_code . ': ' . $rate . " == " . $currency->convert_rate . "\n";
}
} catch (\Exception $e) {
echo "Error updating " . $currency->name . ': ' . $e->getMessage() . "\n\n";
}
}
}
}
public function fetchRate(CurrencyPair $currencyPair)
{
$providerIds = [(int) $this->mainProvider, (int) $this->secondProvider];
/** @var CurrencyRateProvider[] $providers */
$providers = CurrencyRateProvider::find()->where(['id' => $providerIds])->orderBy(['FIELD (`id`, ' . implode(',', $providerIds) . ')' => ''])->all();
if (count($providers) !== 2) {
throw new Exception('One of providers not found');
}
$rates = [];
foreach ($providers as $provider) {
try {
$providerHandler = $provider->getImplementationInstance($this->httpAdapter);
if ($providerHandler !== null) {
$swap = new Swap($providerHandler);
$rate = $swap->quote($currencyPair->getBaseCurrency() . '/' . $currencyPair->getQuoteCurrency())->getValue();
$rates[] = floatval($rate);
} else {
throw new Exception('Provider "' . $provider->name . '" not found');
}
} catch (\Exception $e) {
throw new Exception('One or more currency providers did not return result');
}
}
$min = min($rates);
$max = max($rates);
return new Rate($max - $min >= $max * $this->criticalDifference / 100 ? $max : $rates[0], new \DateTime());
}
/**
* {@inheritdoc}
*/
public function quote(Currency $baseCurrency, Currency $counterCurrency)
{
try {
$rate = $this->swap->latest($baseCurrency->getCode() . '/' . $counterCurrency->getCode());
} catch (ExchangerException $e) {
throw UnresolvableCurrencyPairException::createFromCurrencies($baseCurrency, $counterCurrency);
}
return new CurrencyPair($baseCurrency, $counterCurrency, $rate->getValue());
}
/**
* @test
*/
public function it_caches_a_rate()
{
$pair = new CurrencyPair('EUR', 'USD');
$provider = $this->getMock('Swap\\ProviderInterface');
$cache = new DoctrineCache(new ArrayCache(), 3600);
$provider->expects($this->once())->method('fetchRate')->with($pair)->will($this->returnValue(new Rate('1', new \DateTime())));
$swap = new Swap($provider, $cache);
$rate1 = $swap->quote($pair);
$rate2 = $swap->quote($pair);
$rate3 = $swap->quote('EUR/USD');
$this->assertSame($rate1, $rate2);
$this->assertSame($rate2, $rate3);
}
public function fetchRate(CurrencyPair $currencyPair)
{
/** @var CurrencyRateProvider $provider */
$provider = CurrencyRateProvider::findOne($this->provider);
if ($provider === null) {
throw new Exception('Provider not found');
}
try {
$providerHandler = $provider->getImplementationInstance($this->httpAdapter);
$swap = new Swap($providerHandler);
$rate = $swap->quote($currencyPair->getBaseCurrency() . '/' . $currencyPair->getQuoteCurrency())->getValue();
if ($this->marginMultiplier !== null && $this->marginMultiplier > 1) {
$rate *= $this->marginMultiplier;
}
if ($this->fixedMargin !== null && $this->fixedMargin > 0) {
$rate += $this->fixedMargin;
}
} catch (\Exception $e) {
throw new Exception('Calculating error');
}
return new Rate($rate, new \DateTime());
}
