<?php
/**
 * @category	Fishpig
 * @package		Fishpig_Bolt
 * @license		http://fishpig.co.uk/license.txt
 * @author		Ben Tideswell <help@fishpig.co.uk>
 */

class Fishpig_Bolt_Model_System_Config_Source_Module
{
	/**
	 * Options cache
	 *
	 * @return array
	 */
	protected $_options = null;
	
	/**
	 * Retrieve the option array of modules
	 *
	 * @return array
	 */
	public function toOptionArray()
	{
		if (!is_null($this->_options)) {
			return $this->_options;
		}

		$config = Mage::app()->getConfig();
		$modules = (array)$config->getNode('modules')->asArray();
		
		ksort($modules);

		$this->_options = array();

		foreach($modules as $module => $data) {
			if (isset($data['active']) && $data['active'] === 'true') {
				$frontNames = (array)$config->getNode('frontend')->xpath('routers//args[module="' . $module . '"]/frontName');
				
				if (count($frontNames) === 0) {
					continue;
				}
				
				$frontName = array_shift($frontNames);
				
				$this->_options[] = array(
					'value' => $frontName,
					'label' => $module,
				);
			}
		}

		return $this->_options;
	}
}