<?php

/**

* Rights generator component class file.

*

* @author Christoffer Niska <cniska@live.com>

* @copyright Copyright &copy; 2010 Christoffer Niska

* @since 0.9.8

*/

class RGenerator extends CApplicationComponent

{

	private $_authManager;

	private $_items;



	/**

	* @property CDbConnection

	*/

	public $db;



	/**

	* Initializes the generator.

	*/

	public function init()

	{

		parent::init();



		$this->_authManager = Yii::app()->getAuthManager();

		$this->db = $this->_authManager->db;

	}



	/**

	* Runs the generator.

	* @return the items generated or false if failed.

	*/

	public function run()

	{

		$authManager = $this->_authManager;

		$itemTable = $authManager->itemTable;



		// Start transaction

		$txn = $this->db->beginTransaction();



		try

		{

			$generatedItems = array();



			// Loop through each type of items

			foreach( $this->_items as $type=>$items )

			{

				// Loop through items

				foreach( $items as $name )

				{

					// Make sure the item does not already exist

					if( $authManager->getAuthItem($name)===null )

					{

						// Insert item

						$sql = "INSERT INTO {$itemTable} (name, type, data)

							VALUES (:name, :type, :data)";

						$command = $this->db->createCommand($sql);

						$command->bindValue(':name', $name);

						$command->bindValue(':type', $type);

						$command->bindValue(':data', 'N;');

						$command->execute();



						$generatedItems[] = $name;

					}

				}

			}



			// All commands executed successfully, commit

			$txn->commit();

			return $generatedItems;

		}

		catch( CDbException $e )

		{

			// Something went wrong, rollback

			$txn->rollback();

			return false;

		}

	}



	/**

	* Appends items to be generated of a specific type.

	* @param array $items the items to be generated.

	* @param integer $type the item type.

	*/

	public function addItems($items, $type)

	{

		if( isset($this->_items[ $type ])===false )

			$this->_items[ $type ] = array();



		foreach( $items as $itemname )

			$this->_items[ $type ][] = $itemname;

	}



	/**

	* Returns all the controllers and their actions.

	* @param array $items the controllers and actions.

	*/

	public function getControllerActions($items=null)

	{

		if( $items===null )

			$items = $this->getAllControllers();



		foreach( $items['controllers'] as $controllerName=>$controller )

		{

			$actions = array();

			$file = fopen($controller['path'], 'r');

			$lineNumber = 0;

			while( feof($file)===false )

			{

				++$lineNumber;

				$line = fgets($file);

				preg_match('/public[ \t]+function[ \t]+action([A-Z]{1}[a-zA-Z0-9]+)[ \t]*\(/', $line, $matches);

				if( $matches!==array() )

				{

					$name = $matches[1];

					$actions[ strtolower($name) ] = array(

						'name'=>$name,

						'line'=>$lineNumber

					);

				}

			}



			$items['controllers'][ $controllerName ]['actions'] = $actions;

		}



		foreach( $items['modules'] as $moduleName=>$module )

			$items['modules'][ $moduleName ] = $this->getControllerActions($module);



		return $items;

	}



	/**

	* Returns a list of all application controllers.

	* @return array the controllers.

	*/

	protected function getAllControllers()

	{

		$basePath = Yii::app()->basePath;

		$items['controllers'] = $this->getControllersInPath($basePath.DIRECTORY_SEPARATOR.'controllers');

		$items['modules'] = $this->getControllersInModules($basePath);

		return $items;

	}



	/**

	* Returns all controllers under the specified path.

	* @param string $path the path.

	* @return array the controllers.

	*/

	protected function getControllersInPath($path)

	{

		$controllers = array();



		if( file_exists($path)===true )

		{

			$controllerDirectory = scandir($path);

			foreach( $controllerDirectory as $entry )

			{

				if( $entry{0}!=='.' )

				{

					$entryPath = $path.DIRECTORY_SEPARATOR.$entry;

					if( strpos(strtolower($entry), 'controller')!==false )

					{

						$name = substr($entry, 0, -14);

						$controllers[ strtolower($name) ] = array(

							'name'=>$name,

							'file'=>$entry,

							'path'=>$entryPath,

						);

					}



					if( is_dir($entryPath)===true )

						foreach( $this->getControllersInPath($entryPath) as $controllerName=>$controller )

							$controllers[ $controllerName ] = $controller;

				}

			}

		}



		return $controllers;

	}



	/**

	* Returns all the controllers under the specified path.

	* @param string $path the path.

	* @return array the controllers.

	*/

	protected function getControllersInModules($path)

	{

		$items = array();



		$modulePath = $path.DIRECTORY_SEPARATOR.'modules';

		if( file_exists($modulePath)===true )

		{

			$moduleDirectory = scandir($modulePath);

			foreach( $moduleDirectory as $entry )

			{

				if( substr($entry, 0, 1)!=='.' && $entry!=='rights' )

				{

					$subModulePath = $modulePath.DIRECTORY_SEPARATOR.$entry;

					if( file_exists($subModulePath)===true )

					{

						$items[ $entry ]['controllers'] = $this->getControllersInPath($subModulePath.DIRECTORY_SEPARATOR.'controllers');

						$items[ $entry ]['modules'] = $this->getControllersInModules($subModulePath);

					}

				}

			}

		}



		return $items;

	}

}