/**
* (non-PHPdoc)
* @see src/lib/Faett/Piwik/Decoder/Interfaces/Faett_Piwik_Decoder_Interfaces_Decoder#decode($params)
*/
public function decode(array $params)
{
// check of the piwik API can be invoked and read the data
$toDecode = @file_get_contents($piwikUrl = $this->_service->build($params));
// check if the data can be loaded successfully
if ($toDecode === false) {
throw new Exception('Invalid piwik URL ' . $piwikUrl . ' specified');
}
// load, decode and return the data
return Zend_Json::decode($toDecode, Zend_Json::TYPE_ARRAY);
}
/**
* Initializes the collection with the data
* necessary for rendering the chart.
*
* @return void
*/
protected function _initCollection()
{
// initialize the array with the params
$params = array('period' => 'day', 'date' => 'last30');
// check the selected period
switch ($period = $this->getParam('period')) {
case '7d':
break;
case '1m':
$params['period'] = 'day';
$params['date'] = 'last30';
break;
case '1y':
$params['period'] = 'month';
$params['date'] = 'last12';
break;
case '2y':
$params['period'] = 'month';
$params['date'] = 'last24';
break;
default:
throw new Exception('Invalid period ' . $period);
}
// initialize the Piwik service
$service = Faett_Piwik_Service::create();
// load the live user data
$this->_collection = $service->call('VisitsSummary.get', $params);
}
/**
* Loads the necessary live user data
* from the specified Piwik instance.
*
* @return Faett_Piwik_Block_Adminhtml_Dashboard_Tab_Live_User The instance
*/
protected function _prepareCollection()
{
// initialize the Piwik service
$service = Faett_Piwik_Service::create();
// load the live user data
$collection = $service->call('Live.getLastVisits');
// set the data
$this->setCollection($collection);
// call the method of the parent class
return parent::_prepareCollection();
}