Added AlphaVantage adapter

Adapter/AdapterFactory.php

@@ -106,14 +106,14 @@ public function createOerAdapter($adapterClass = null)
     }
 
     /**
-     * Create an YahooCurrencyAdapter.
+     * Create an AlphaCurrencyAdapter.
      *
-     * @return Lexik\Bundle\CurrencyBundle\Adapter\YahooCurrencyAdapter
+     * @return Lexik\Bundle\CurrencyBundle\Adapter\AlphaCurrencyAdapter
      */
-    public function createYahooAdapter($adapterClass = null)
+    public function createAlphaAdapter($adapterClass = null)
     {
         if (null == $adapterClass) {
-            $adapterClass = 'Lexik\Bundle\CurrencyBundle\Adapter\YahooCurrencyAdapter';
+            $adapterClass = 'Lexik\Bundle\CurrencyBundle\Adapter\AlphaCurrencyAdapter';
         }
 
         return $this->create($adapterClass);

Adapter/AlphaCurrencyAdapter.php

@@ -0,0 +1,112 @@
+<?php
+
+namespace Lexik\Bundle\CurrencyBundle\Adapter;
+
+use Lexik\Bundle\CurrencyBundle\Exception\CurrencyNotFoundException;
+
+/**
+ * Alpha Vantage Currency Adapter
+ *
+ * @author Jonas Dambacher <[email protected]>
+ */
+class AlphaCurrencyAdapter extends AbstractCurrencyAdapter
+{
+    /**
+     * @var string
+     */
+    private $apiKey;
+
+    /**
+     * @var array
+     */
+    private $currencyCodes = array();
+
+    /**
+     * Set the Alpha Vantage API key.
+     *
+     * @param string $apiKey
+     */
+    public function setApiKey($apiKey)
+    {
+        $this->apiKey = $apiKey;
+    }
+
+    /**
+     * Init object storage
+     */
+    public function attachAll()
+    {
+        foreach ($this->managedCurrencies as $managedCurrency) {
+            $this->addCurrency($managedCurrency);
+        }
+
+        $defaultRate = 1;
+
+        // Add default currency (euro in this example)
+        $defaultCurrency = new $this->currencyClass;
+        $defaultCurrency->setCode('EUR');
+        $defaultCurrency->setRate($defaultRate);
+
+        $this[$defaultCurrency->getCode()] = $defaultCurrency;
+
+        $currencies = [];
+        // Build query
+        foreach ($this->currencyCodes as $index=>$currencyCode) {
+            $currencies[$currencyCode] = $this->getExchangeRate($currencyCode);
+        }
+
+        foreach ($currencies as $code => $rate) {
+            if (in_array($code, $this->managedCurrencies)) { // you can check if the currency is in the managed currencies
+                $currency = new $this->currencyClass;
+                $currency->setCode($code);
+                $currency->setRate($rate);
+
+                $this[$currency->getCode()] = $currency;
+            }
+        }
+
+        // get the default rate from the default currency defined in the configuration
+        if (isset($this[$this->defaultCurrency])) {
+            $defaultRate = $this[$this->defaultCurrency]->getRate();
+        }
+
+        // convert rates according to the default one.
+        $this->convertAll($defaultRate);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getIdentifier()
+    {
+        return 'alpha';
+    }
+
+    /**
+     * Add currency to the query
+     *
+     * @param $code
+     */
+    private function addCurrency($code)
+    {
+        $this->currencyCodes[] = $code;
+    }
+
+    /**
+     * @param $currency
+     * @return float
+     */
+    private function getExchangeRate($currency)
+    {
+        if (!$this->apiKey) {
+            throw new \InvalidArgumentException('ALPHA_API_KEY must be set in order to use AlphaCurrencyAdapter');
+        }
+
+        $url = sprintf('https://www.alphavantage.co/query?function=CURRENCY_EXCHANGE_RATE&from_currency=%s&to_currency=%s&apikey=%s', $this->defaultCurrency, $currency, $this->apiKey);
+        $json = file_get_contents($url);
+        $data = json_decode($json, true);
+
+        return $data['Realtime Currency Exchange Rate']['5. Exchange Rate'];
+    }
+
+}

DependencyInjection/Configuration.php

@@ -74,9 +74,9 @@ public function getConfigTreeBuilder()
                     ->defaultValue(null)
                 ->end()
 
-                ->scalarNode('yahoo_url')
+                ->scalarNode('alpha_api_key')
                     ->cannotBeEmpty()
-                    ->defaultValue('https://query.yahooapis.com/v1/public/yql')
+                    ->defaultValue(null)
                 ->end()
 
             ->end()

DependencyInjection/LexikCurrencyExtension.php

@@ -30,7 +30,7 @@ public function load(array $configs, ContainerBuilder $container)
         $container->setParameter('lexik_currency.ecb_url', $config['ecb_url']);
         $container->setParameter('lexik_currency.oer_url', $config['oer_url']);
         $container->setParameter('lexik_currency.oer_app_id', $config['oer_app_id']);
-        $container->setParameter('lexik_currency.yahoo_url', $config['yahoo_url']);
+        $container->setParameter('lexik_currency.alpha_api_key', $config['alpha_api_key']);
         $container->setParameter('lexik_currency.decimal_part.precision', $config['decimal_part']['precision']);
         $container->setParameter('lexik_currency.decimal_part.round_mode', $config['decimal_part']['round_mode']);
 

Resources/config/adapters.xml

@@ -10,7 +10,7 @@
         <parameter key="lexik_currency.abstract_adapter.class">Lexik\Bundle\CurrencyBundle\Adapter\AbstractCurrencyAdapter</parameter>
         <parameter key="lexik_currency.ecb_adapter.class">Lexik\Bundle\CurrencyBundle\Adapter\EcbCurrencyAdapter</parameter>
         <parameter key="lexik_currency.oer_adapter.class">Lexik\Bundle\CurrencyBundle\Adapter\OerCurrencyAdapter</parameter>
-        <parameter key="lexik_currency.yahoo_adapter.class">Lexik\Bundle\CurrencyBundle\Adapter\YahooCurrencyAdapter</parameter>
+        <parameter key="lexik_currency.alpha_adapter.class">Lexik\Bundle\CurrencyBundle\Adapter\AlphaCurrencyAdapter</parameter>
         <parameter key="lexik_currency.doctrine_adapter.class">Lexik\Bundle\CurrencyBundle\Adapter\DoctrineCurrencyAdapter</parameter>
         <parameter key="lexik_currency.doctrine.orm.entity_manager">default</parameter>
     </parameters>
@@ -56,12 +56,12 @@
             <tag name="lexik_currency.adapter" alias="oer_currency_adapter" />
         </service>
 
-        <service id="lexik_currency.yahoo_adapter" class="%lexik_currency.yahoo_adapter.class%" parent="lexik_currency.abstract_adapter">
-            <factory service="lexik_currency.adapter_factory" method="createYahooAdapter" />
-            <call method="setYahooUrl">
-                <argument>%lexik_currency.yahoo_url%</argument>
+        <service id="lexik_currency.alpha_adapter" class="%lexik_currency.alpha_adapter.class%" parent="lexik_currency.abstract_adapter">
+            <factory service="lexik_currency.adapter_factory" method="createAlphaAdapter" />
+            <call method="setApiKey">
+                <argument>%lexik_currency.alpha_api_key%</argument>
             </call>
-            <tag name="lexik_currency.adapter" alias="yahoo_currency_adapter" />
+            <tag name="lexik_currency.adapter" alias="alpha_currency_adapter" />
         </service>
     </services>
 

Tests/Unit/Adapter/AdapterFactoryTest.php

@@ -29,12 +29,12 @@ public function testCreateEcbAdapter()
         $this->assertEquals(0, count($adapter));
     }
 
-    public function testCreateYahooAdapter()
+    public function testCreateAlphaAdapter()
     {
         $factory = new AdapterFactory($this->doctrine, 'EUR', array('EUR', 'USD'), self::CURRENCY_ENTITY);
-        $adapter = $factory->createYahooAdapter();
+        $adapter = $factory->createAlphaAdapter();
 
-        $this->assertInstanceOf('Lexik\Bundle\CurrencyBundle\Adapter\YahooCurrencyAdapter', $adapter);
+        $this->assertInstanceOf('Lexik\Bundle\CurrencyBundle\Adapter\AlphaCurrencyAdapter', $adapter);
         $this->assertEquals('EUR', $adapter->getDefaultCurrency());
         $this->assertEquals(array('EUR', 'USD'), $adapter->getManagedCurrencies());
         $this->assertEquals(0, count($adapter));