<?php
/**
 * @package     Joomla.Administrator
 * @subpackage  com_languages
 *
 * @copyright   Copyright (C) 2005 - 2015 Open Source Matters, Inc. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

defined('_JEXEC') or die;

/**
 * Languages Component Language Model
 *
 * @since  1.5
 */
class LanguagesModelLanguage extends JModelAdmin
{
	/**
	 * Constructor.
	 *
	 * @param   array  $config  An optional associative array of configuration settings.
	 */
	public function __construct($config = array())
	{
		$config = array_merge(
			array(
				'event_after_save'  => 'onExtensionAfterSave',
				'event_before_save' => 'onExtensionBeforeSave',
				'events_map'        => array(
					'save' => 'extension'
				)
			), $config
		);

		parent::__construct($config);
	}

	/**
	 * Override to get the table.
	 *
	 * @param   string  $name     Name of the table.
	 * @param   string  $prefix   Table name prefix.
	 * @param   array   $options  Array of options.
	 *
	 * @return  JTable
	 *
	 * @since   1.6
	 */
	public function getTable($name = '', $prefix = '', $options = array())
	{
		return JTable::getInstance('Language');
	}

	/**
	 * Method to auto-populate the model state.
	 *
	 * Note. Calling getState in this method will result in recursion.
	 *
	 * @return  void
	 *
	 * @since   1.6
	 */
	protected function populateState()
	{
		$app    = JFactory::getApplication('administrator');
		$params = JComponentHelper::getParams('com_languages');

		// Load the User state.
		$langId = $app->input->getInt('lang_id');
		$this->setState('language.id', $langId);

		// Load the parameters.
		$this->setState('params', $params);
	}

	/**
	 * Method to get a member item.
	 *
	 * @param   integer  $langId  The id of the member to get.
	 *
	 * @return  mixed  User data object on success, false on failure.
	 *
	 * @since   1.0
	 */
	public function getItem($langId = null)
	{
		$langId	= (!empty($langId)) ? $langId : (int) $this->getState('language.id');
		$false  = false;

		// Get a member row instance.
		$table = $this->getTable();

		// Attempt to load the row.
		$return = $table->load($langId);

		// Check for a table object error.
		if ($return === false && $table->getError())
		{
			$this->setError($table->getError());

			return $false;
		}

		// Set a valid accesslevel in case '0' is stored due to a bug in the installation SQL (was fixed with PR 2714).
		if ($table->access == '0')
		{
			$table->access = (int) JFactory::getConfig()->get('access');
		}

		$properties = $table->getProperties(1);
		$value = JArrayHelper::toObject($properties, 'JObject');

		return $value;
	}

	/**
	 * Method to get the group form.
	 *
	 * @param   array    $data      Data for the form.
	 * @param   boolean  $loadData  True if the form is to load its own data (default case), false if not.
	 *
	 * @return  mixed  A JForm object on success, false on failure.
	 *
	 * @since   1.6
	 */
	public function getForm($data = array(), $loadData = true)
	{
		// Get the form.
		$form = $this->loadForm('com_languages.language', 'language', array('control' => 'jform', 'load_data' => $loadData));

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

		return $form;
	}

	/**
	 * Method to get the data that should be injected in the form.
	 *
	 * @return  mixed  The data for the form.
	 *
	 * @since   1.6
	 */
	protected function loadFormData()
	{
		// Check the session for previously entered form data.
		$data = JFactory::getApplication()->getUserState('com_languages.edit.language.data', array());

		if (empty($data))
		{
			$data = $this->getItem();
		}

		$this->preprocessData('com_languages.language', $data);

		return $data;
	}

	/**
	 * Method to save the form data.
	 *
	 * @param   array  $data  The form data.
	 *
	 * @return  boolean  True on success.
	 *
	 * @since   1.6
	 */
	public function save($data)
	{
		$langId = (!empty($data['lang_id'])) ? $data['lang_id'] : (int) $this->getState('language.id');
		$isNew	= true;

		$dispatcher = JEventDispatcher::getInstance();
		JPluginHelper::importPlugin($this->events_map['save']);

		$table   = $this->getTable();
		$context = $this->option . '.' . $this->name;

		// Load the row if saving an existing item.
		if ($langId > 0)
		{
			$table->load($langId);
			$isNew = false;
		}

		// Prevent white spaces, including East Asian double bytes.
		$spaces = array('/\xE3\x80\x80/', ' ');

		$data['lang_code'] = str_replace($spaces, '', $data['lang_code']);

		// Prevent saving an incorrect language tag
		if (!preg_match('#\b([a-z]{2,3})[-]([A-Z]{2})\b#', $data['lang_code']))
		{
			$this->setError(JText::_('COM_LANGUAGES_ERROR_LANG_TAG'));

			return false;
		}

		$data['sef'] = str_replace($spaces, '', $data['sef']);
		$data['sef'] = JApplicationHelper::stringURLSafe($data['sef']);

		// Bind the data.
		if (!$table->bind($data))
		{
			$this->setError($table->getError());

			return false;
		}

		// Check the data.
		if (!$table->check())
		{
			$this->setError($table->getError());

			return false;
		}

		// Trigger the before save event.
		$result = $dispatcher->trigger($this->event_before_save, array($context, &$table, $isNew));

		// Check the event responses.
		if (in_array(false, $result, true))
		{
			$this->setError($table->getError());

			return false;
		}

		// Store the data.
		if (!$table->store())
		{
			$this->setError($table->getError());

			return false;
		}

		// Trigger the after save event.
		$dispatcher->trigger($this->event_after_save, array($context, &$table, $isNew));

		$this->setState('language.id', $table->lang_id);

		// Clean the cache.
		$this->cleanCache();

		return true;
	}

	/**
	 * Custom clean cache method.
	 *
	 * @param   string   $group      Optional cache group name.
	 * @param   integer  $client_id  Application client id.
	 *
	 * @return  void
	 *
	 * @since   1.6
	 */
	protected function cleanCache($group = null, $client_id = 0)
	{
		parent::cleanCache('_system');
		parent::cleanCache('com_languages');
	}
}