OpenExchangeRates.php
No OneTemporary
Actions

Authored By

Unknown

Size

1 KB

Referenced Files

None

Subscribers

None

OpenExchangeRates.php
View Options

	<?php

	namespace App\Backends;

	class OpenExchangeRates
	{
	/**
	* Import exchange rates from openexchangerates.org
	*
	* @param string $baseCurrency Base currency
	*
	* @return array exchange rates
	*/
	public static function retrieveRates($baseCurrency)
	{
	$baseCurrency = strtoupper($baseCurrency);
	$apiKey = \config('services.openexchangerates.api_key');
	$query = http_build_query(['app_id' => $apiKey, 'base' => 'USD']);
	$url = 'https://openexchangerates.org/api/latest.json?' . $query;
	$html = file_get_contents($url, false);
	$rates = [];

	if ($html && ($result = json_decode($html, true)) && !empty($result['rates'])) {
	foreach ($result['rates'] as $code => $rate) {
	$rates[strtoupper($code)] = $rate;
	}

	if ($baseCurrency != 'USD') {
	if ($base = $rates[$baseCurrency]) {
	foreach ($rates as $code => $rate) {
	$rates[$code] = $rate / $base;
	}
	} else {
	$rates = [];
	}
	}

	foreach ($rates as $code => $rate) {
	\Log::debug(sprintf("Update %s: %0.8f", $code, $rate));
	}
	} else {
	throw new \Exception("Failed to parse exchange rates");
	}

	if (count($rates) > 1) {
	$rates[$baseCurrency] = 1;
	return $rates;
	}

	throw new \Exception("Failed to retrieve exchange rates");
	}
	}