Changeset 411

Timestamp:

Oct 1, 2012 5:41:35 PM (12 years ago)

Author:

anonymous

Message:

Added ECB XML API to Currency.inc.php

File:

• trunk/lib/Currency.inc.php (modified) (4 diffs)

trunk/lib/Currency.inc.php

@@ -45 +45 @@
         'cache_dir' => '',
         'cache_age' => 86400, // 24 hours.
-        'api_type' => 'json', // 'json' or 'soap'.
-        'api_url' => 'http://xurrency.com/api/%s/%s/%s',
-        'api_key' => '',
+        'api' => 'ecb', // 'xurrency' or 'ecb'. Add other APIs under the _performAPICall() method.
+        'api_key' => '', // Used only by xurrency API.
     );
     
@@ -156 +155 @@
                 // Failed retrieving value. Use cached copy for now.
                 $app->logMsg(sprintf('Failed getting currency exchange rate: %s-to-%s, using cached copy', $base, $target), LOG_NOTICE, __FILE__, __LINE__);
-                if (!$value = file_get_contents($cache_file_path)) {
+                if (!$value = @file_get_contents($cache_file_path)) {
                     $app->logMsg(sprintf('Failed reading cached exchange rate file: %s', $cache_file_path), LOG_ERR, __FILE__, __LINE__);
                     return false;
@@ -184 +183 @@
     {
         $app =& App::getInstance();
-        
-        switch ($this->getParam('api_type')) {
-        case 'json' :
-            $api_url = $this->getParam('api_url');
+
+        switch ($this->getParam('api')) {
+        case 'xurrency' :
+            $api_url = 'http://xurrency.com/api/%s/%s/%s';
             if ('' != $this->getParam('api_key')) {
                 $api_url .= '?key=' . $this->getParam('api_key');
@@ -212 +211 @@
             break;
 
-        case 'soap' :
-            // Xurrency doesn't appear to support SOAP anymore, but we'll leave this here in case it comes back.
-
-            // Setup SOAP object.
-            require_once 'SOAP/Client.php';
-            $soap_client = new SOAP_Client($this->getParam('api_url'));
-            // Call API
-            $result = $soap_client->call('getValue', $parameters);
-            // Check for errors.
-            if (PEAR::isError($result)) {
-                $app->logMsg(sprintf('SOAP Pear error: %s', $result->getMessage()), LOG_WARNING, __FILE__, __LINE__);
-                return false;
-            }
-            return $result;
-            break;
+        case 'ecb' :
+            // Fetch XML from ECB <http://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml>
+            $api_url = 'http://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml';
+            if (false === $sXML = file_get_contents($api_url)) {
+                $app->logMsg(sprintf('Failed to load ECB XML data from ', $api_url), LOG_WARNING, __FILE__, __LINE__);
+                return false;
+            }
+            if (false === $oXML = simplexml_load_string($sXML)) {
+                $app->logMsg(sprintf('Failed to decode ECB XML data: ', truncate($sXML, 200, 'end')), LOG_WARNING, __FILE__, __LINE__);
+                return false;
+            }
+            // Populate Array
+            foreach ($oXML->Cube->Cube->Cube as $oRate) {
+                foreach ($oRate->attributes() as $sKey => $sAttribute) {
+                    if ($sKey == 'currency') {
+                        $sCurrency = strtolower((string) $sAttribute);
+                    } else if ($sKey == 'rate') {
+                        $nRate = (string) $sAttribute;
+                    }
+                }
+                $aCurrencies['eur'][$sCurrency] = $nRate;
+                $aCurrencies[$sCurrency]['eur'] = 1 / $nRate;
+            }
+            // Check if requested rates are available.
+            if (isset($aCurrencies[$parameters['base']][$parameters['target']])) {
+                return (float) $aCurrencies[$parameters['base']][$parameters['target']];
+            } else {
+                $app->logMsg(sprintf('API %s does not have base %s or target %s', $this->getParam('api'), $parameters['base'], $parameters['target']), LOG_WARNING, __FILE__, __LINE__);
+                return false;
+            }
 
         default :
-            trigger_error('Unknown api_type: ' . $this->getParam('api_type'), E_USER_ERROR);
+            trigger_error('Unknown API: ' . $this->getParam('api'), E_USER_ERROR);
             die;
             break;