<?php

	/**
	 * NRE
	 *
	 * @author	coderkun <olli@coderkun.de>
	 * @copyright	2013 coderkun (http://www.coderkun.de)
	 * @license	http://www.gnu.org/licenses/gpl.html
	 * @link	http://www.coderkun.de/projects/nre
	 */
	
	namespace nre\core;
	
	
	/**
	 * Abstract class to implement a (Controller) Component.
	 * 
	 * @author	coderkun <olli@coderkun.de>
	 */
	abstract class Component
	{
		
		
		
		
		/**
		 * Load the class of a Component.
		 * 
		 * @throws	\nre\exceptions\ComponentNotFoundException
		 * @throws	\nre\exceptions\ComponentNotValidException
		 * @param	string	$componentName		Name of the Component to load
		 */
		public static function load($componentName)
		{
			// Determine full classname
			$className = self::getClassName($componentName);
			
			try {
				// Load class
				ClassLoader::load($className);
				
				// Validate class
				ClassLoader::check($className, get_class());
			}
			catch(\nre\exceptions\ClassNotValidException $e) {
				throw new \nre\exceptions\ComponentNotValidException($e->getClassName());
			}
			catch(\nre\exceptions\ClassNotFoundException $e) {
				throw new \nre\exceptions\ComponentNotFoundException($e->getClassName());
			}
		}
		
		
		/**
		 * Instantiate a Component (Factory Pattern).
		 * 
		 * @param	string	$componentName	Name of the Component to instantiate
		 */
		public static function factory($componentName)
		{
			// Determine full classname
			$className = self::getClassName($componentName);
			
			// Construct and return Controller
			return new $className();
		}
		
		
		/**
		 * Determine the classname for the given Component name.
		 * 
		 * @param	string	$componentName	Component name to get classname of
		 * @return	string			Classname for the Component name
		 */
		private static function getClassName($componentName)
		{
			$className = \nre\core\ClassLoader::concatClassNames($componentName, \nre\core\ClassLoader::stripNamespace(get_class()));
			
			
			return \nre\configs\AppConfig::$app['namespace']."controllers\\components\\$className";
		}
		
	}

?>