<?php
/**
 * @package     Joomla.Administrator
 * @subpackage  com_categories
 *
 * @copyright   Copyright (C) 2005 - 2012 Open Source Matters, Inc. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

defined('_JEXEC') or die;

jimport('joomla.application.component.controllerform');

/**
 * The Category Controller
 *
 * @package     Joomla.Administrator
 * @subpackage  com_categories
 * @since       1.6
 */
class CategoriesControllerCategory extends JControllerForm
{
	/**
	 * The extension for which the categories apply.
	 *
	 * @var    string
	 * @since  1.6
	 */
	protected $extension;

	/**
	 * Constructor.
	 *
	 * @param  array  $config  An optional associative array of configuration settings.
	 *
	 * @since  1.6
	 * @see    JController
	 */
	public function __construct($config = array())
	{
		parent::__construct($config);

		// Guess the JText message prefix. Defaults to the option.
		if (empty($this->extension))
		{
			$this->extension = JRequest::getCmd('extension', 'com_content');
		}
	}

	/**
	 * Method to check if you can add a new record.
	 *
	 * @param   array  $data  An array of input data.
	 *
	 * @return  boolean
	 *
	 * @since   1.6
	 */
	protected function allowAdd($data = array())
	{
		$user = JFactory::getUser();
		return ($user->authorise('core.create', $this->extension) || count($user->getAuthorisedCategories($this->extension, 'core.create')));
	}

	/**
	 * Method to check if you can edit a record.
	 *
	 * @param   array   $data  An array of input data.
	 * @param   string  $key   The name of the key for the primary key.
	 *
	 * @return  boolean
	 *
	 * @since   1.6
	 */
	protected function allowEdit($data = array(), $key = 'parent_id')
	{
		// Initialise variables.
		$recordId = (int) isset($data[$key]) ? $data[$key] : 0;
		$user = JFactory::getUser();
		$userId = $user->get('id');

		// Check general edit permission first.
		if ($user->authorise('core.edit', $this->extension))
		{
			return true;
		}

		// Check specific edit permission.
		if ($user->authorise('core.edit', $this->extension . '.category.' . $recordId))
		{
			return true;
		}

		// Fallback on edit.own.
		// First test if the permission is available.
		if ($user->authorise('core.edit.own', $this->extension . '.category.' . $recordId) || $user->authorise('core.edit.own', $this->extension))
		{
			// Now test the owner is the user.
			$ownerId = (int) isset($data['created_user_id']) ? $data['created_user_id'] : 0;
			if (empty($ownerId) && $recordId)
			{
				// Need to do a lookup from the model.
				$record = $this->getModel()->getItem($recordId);

				if (empty($record))
				{
					return false;
				}

				$ownerId = $record->created_user_id;
			}

			// If the owner matches 'me' then do the test.
			if ($ownerId == $userId)
			{
				return true;
			}
		}
		return false;
	}

	/**
	 * Method to run batch operations.
	 *
	 * @param   object  $model  The model.
	 *
	 * @return  boolean	 True if successful, false otherwise and internal error is set.
	 *
	 * @since   1.6
	 */
	public function batch($model = null)
	{
		JSession::checkToken() or jexit(JText::_('JINVALID_TOKEN'));

		// Set the model
		$model = $this->getModel('Category');

		// Preset the redirect
		$this->setRedirect('index.php?option=com_categories&view=categories&extension=' . $this->extension);

		return parent::batch($model);
	}

	/**
	 * Gets the URL arguments to append to an item redirect.
	 *
	 * @param   integer  $recordId  The primary key id for the item.
	 * @param   string   $urlVar    The name of the URL variable for the id.
	 *
	 * @return  string  The arguments to append to the redirect URL.
	 *
	 * @since   1.6
	 */
	protected function getRedirectToItemAppend($recordId = null, $urlVar = 'id')
	{
		$append = parent::getRedirectToItemAppend($recordId);
		$append .= '&extension=' . $this->extension;

		return $append;
	}

	/**
	 * Gets the URL arguments to append to a list redirect.
	 *
	 * @return  string  The arguments to append to the redirect URL.
	 *
	 * @since   1.6
	 */
	protected function getRedirectToListAppend()
	{
		$append = parent::getRedirectToListAppend();
		$append .= '&extension=' . $this->extension;

		return $append;
	}
}