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<?php
/**
 * @package         Advanced Module Manager
 * @version         4.22.6
 *
 * @author          Peter van Westen <peter@nonumber.nl>
 * @link            http://www.nonumber.nl
 * @copyright       Copyright © 2015 NoNumber All Rights Reserved
 * @license         http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL
 */

/**
 * @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;

use Joomla\Registry\Registry;

/**
 * Module model.
 *
 * @since       1.6
 */
class AdvancedModulesModelModule extends JModelAdmin
{
	/**
	 * The type alias for this content type.
	 *
	 * @var      string
	 * @since    3.4
	 */
	public $typeAlias = 'com_modules.module';

	/**
	 * @var    string  The prefix to use with controller messages.
	 * @since  1.6
	 */
	protected $text_prefix = 'COM_MODULES';

	/**
	 * @var    string  The help screen key for the module.
	 * @since  1.6
	 */
	protected $helpKey = 'JHELP_EXTENSIONS_MODULE_MANAGER_EDIT';

	/**
	 * @var    string  The help screen base URL for the module.
	 * @since  1.6
	 */
	protected $helpURL;

	/**
	 * Batch copy/move command. If set to false,
	 * the batch copy/move command is not supported
	 *
	 * @var string
	 */
	protected $batch_copymove = 'position_id';

	/**
	 * Allowed batch commands
	 *
	 * @var array
	 */
	protected $batch_commands = array(
		'assetgroup_id' => 'batchAccess',
		'language_id' => 'batchLanguage',
	);

	/**
	 * Constructor.
	 *
	 * @param   array  $config  An optional associative array of configuration settings.
	 */
	public function __construct($config = array())
	{
		$config = array_merge(
			array(
				'event_after_delete'  => 'onExtensionAfterDelete',
				'event_after_save'    => 'onExtensionAfterSave',
				'event_before_delete' => 'onExtensionBeforeDelete',
				'event_before_save'   => 'onExtensionBeforeSave',
				'events_map'          => array(
					'save'   => 'extension',
					'delete' => 'extension'
				)
			), $config
		);

		parent::__construct($config);
	}

	/**
	 * 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');

		// Load the User state.
		$pk = $app->input->getInt('id');

		if (!$pk)
		{
			if ($extensionId = (int) $app->getUserState('com_advancedmodules.add.module.extension_id'))
			{
				$this->setState('extension.id', $extensionId);
			}
		}

		$this->setState('module.id', $pk);

		// Load the parameters.
		$params	= JComponentHelper::getParams('com_advancedmodules');
		$this->setState('params', $params);

		$this->getConfig();
	}

	/**
	 * Method to perform batch operations on a set of modules.
	 *
	 * @param   array  $commands  An array of commands to perform.
	 * @param   array  $pks       An array of item ids.
	 * @param   array  $contexts  An array of item contexts.
	 *
	 * @return  boolean  Returns true on success, false on failure.
	 *
	 * @since   1.7
	 */
	public function batch($commands, $pks, $contexts)
	{
		// Sanitize user ids.
		$pks = array_unique($pks);
		JArrayHelper::toInteger($pks);

		// Remove any values of zero.
		if (array_search(0, $pks, true))
		{
			unset($pks[array_search(0, $pks, true)]);
		}

		if (empty($pks))
		{
			$this->setError(JText::_('JGLOBAL_NO_ITEM_SELECTED'));
			return false;
		}

		$done = false;

		if (!empty($commands['position_id']))
		{
			$cmd = JArrayHelper::getValue($commands, 'move_copy', 'c');

			if (!empty($commands['position_id']))
			{
				if ($cmd == 'c')
				{
					$result = $this->batchCopy($commands['position_id'], $pks, $contexts);
					if (is_array($result))
					{
						$pks = $result;
					}
					else
					{
						return false;
					}
				}
				elseif ($cmd == 'm' && !$this->batchMove($commands['position_id'], $pks, $contexts))
				{
					return false;
				}
				$done = true;
			}
		}

		if (!empty($commands['assetgroup_id']))
		{
			if (!$this->batchAccess($commands['assetgroup_id'], $pks, $contexts))
			{
				return false;
			}

			$done = true;
		}

		if (!empty($commands['language_id']))
		{
			if (!$this->batchLanguage($commands['language_id'], $pks, $contexts))
			{
				return false;
			}

			$done = true;
		}

		if (!$done)
		{
			$this->setError(JText::_('JLIB_APPLICATION_ERROR_INSUFFICIENT_BATCH_INFORMATION'));
			return false;
		}

		// Clear the cache
		$this->cleanCache();

		return true;
	}

	/**
	 * Batch language changes for a group of rows.
	 *
	 * @param   string  $value    The new value matching a language.
	 * @param   array   $pks      An array of row IDs.
	 * @param   array   $contexts An array of item contexts.
	 *
	 * @return  boolean  True if successful, false otherwise and internal error is set.
	 *
	 * @since   11.3
	 */
	protected function batchLanguage($value, $pks, $contexts)
	{
		// Set the variables
		$user = JFactory::getUser();
		$db = $this->getDbo();
		$table = $this->getTable();
		$table_adv = JTable::getInstance('AdvancedModules', 'AdvancedModulesTable');

		foreach ($pks as $pk)
		{
			if ($user->authorise('core.edit', $contexts[$pk]))
			{
				$table->reset();
				$table->load($pk);
				$table->language = $value;

				if (!$table->store())
				{
					$this->setError($table->getError());
					return false;
				}

				if ($table->id && !$table_adv->load($table->id))
				{
					$table_adv->moduleid = $table->id;
					$db->insertObject($table_adv->getTableName(), $table_adv, $table_adv->getKeyName());
				}

				if ($table_adv->load($pk, true))
				{
					$table_adv->moduleid = $table->id;

					$params = json_decode($table_adv->params);

					if ($value == '*')
					{
						$params->assignto_languages = 0;
						$params->assignto_languages_selection = array();
					}
					else
					{
						$params->assignto_languages = 1;
						$params->assignto_languages_selection = array($value);
					}

					$table_adv->params = json_encode($params);

					if (!$table_adv->check() || !$table_adv->store())
					{
						$this->setError($table_adv->getError());
						return false;
					}
				}
			}
			else
			{
				$this->setError(JText::_('JLIB_APPLICATION_ERROR_BATCH_CANNOT_EDIT'));
				return false;
			}
		}

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

		return true;
	}

	/**
	 * Batch copy modules to a new position or current.
	 *
	 * @param   integer  $value     The new value matching a module position.
	 * @param   array    $pks       An array of row IDs.
	 * @param   array    $contexts  An array of item contexts.
	 *
	 * @return  boolean  True if successful, false otherwise and internal error is set.
	 *
	 * @since   2.5
	 */
	protected function batchCopy($value, $pks, $contexts)
	{
		// Set the variables
		$user = JFactory::getUser();
		$db = $this->getDbo();
		$query = $db->getQuery(true);
		$table = $this->getTable();
		$table_adv = JTable::getInstance('AdvancedModules', 'AdvancedModulesTable');
		$newIds = array();

		foreach ($pks as $pk)
		{
			if ($user->authorise('core.create', 'com_modules'))
			{
				$table->reset();
				$table->load($pk);

				// Set the new position
				if ($value == 'noposition')
				{
					$position = '';
				}
				elseif ($value == 'nochange')
				{
					$position = $table->position;
				}
				else
				{
					$position = $value;
				}

				$table->position = $position;

				// Alter the title if necessary
				$data = $this->generateNewTitle(0, $table->title, $table->position);
				$table->title = $data['0'];

				// Reset the ID because we are making a copy
				$table->id = 0;

				// Unpublish the new module
				$table->published = 0;

				if (!$table->store())
				{
					$this->setError($table->getError());

					return false;
				}

				// Get the new item ID
				$newId = (int) $table->get('id');

				// Add the new ID to the array
				$newIds[$pk]	= $newId;

				// Now we need to handle the module assignments
				$query->clear()
					->select('m.menuid')
					->from('#__modules_menu as m')
					->where('m.moduleid = ' . (int) $pk);
				$db->setQuery($query);
				$menus = $db->loadColumn();

				// Insert the new records into the table
				foreach ($menus as $menu)
				{
					$query->clear()
						->insert('#__modules_menu')
						->columns(array($db->quoteName('moduleid'), $db->quoteName('menuid')))
						->values($newId . ', ' . $menu);
					$db->setQuery($query);
					try
					{
						$db->execute();
					}
					catch (RuntimeException $e)
					{
						return JError::raiseWarning(500, $e->getMessage());
					}
				}

				if ($table->id && !$table_adv->load($table->id))
				{
					$table_adv->moduleid = $table->id;
					$db->insertObject($table_adv->getTableName(), $table_adv, $table_adv->getKeyName());
				}

				if ($table_adv->load($pk, true))
				{
					$table_adv->moduleid = $table->id;

					$rules = JAccess::getAssetRules('com_modules.module.' . $pk);
					$table_adv->setRules($rules);

					if (!$table_adv->check() || !$table_adv->store())
					{
						$this->setError($table_adv->getError());
						return false;
					}
				}
			}
			else
			{
				$this->setError(JText::_('JLIB_APPLICATION_ERROR_BATCH_CANNOT_CREATE'));

				return false;
			}
		}

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

		return $newIds;
	}

	/**
	 * Batch move modules to a new position or current.
	 *
	 * @param   integer  $value     The new value matching a module position.
	 * @param   array    $pks       An array of row IDs.
	 * @param   array    $contexts  An array of item contexts.
	 *
	 * @return  boolean  True if successful, false otherwise and internal error is set.
	 *
	 * @since   2.5
	 */
	protected function batchMove($value, $pks, $contexts)
	{
		// Set the variables
		$user = JFactory::getUser();
		$table = $this->getTable();

		foreach ($pks as $pk)
		{
			if ($user->authorise('core.edit', 'com_modules'))
			{
				$table->reset();
				$table->load($pk);

				// Set the new position
				if ($value == 'noposition')
				{
					$position = '';
				}
				elseif ($value == 'nochange')
				{
					$position = $table->position;
				}
				else
				{
					$position = $value;
				}

				$table->position = $position;

				// Alter the title if necessary
				$data = $this->generateNewTitle(0, $table->title, $table->position);
				$table->title = $data['0'];

				// Unpublish the moved module
				$table->published = 0;

				if (!$table->store())
				{
					$this->setError($table->getError());

					return false;
				}
			}
			else
			{
				$this->setError(JText::_('JLIB_APPLICATION_ERROR_BATCH_CANNOT_EDIT'));

				return false;
			}
		}

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

		return true;
	}

	/**
	 * Method to test whether a record can have its state edited.
	 *
	 * @param   object  $record  A record object.
	 *
	 * @return  boolean  True if allowed to change the state of the record. Defaults to the permission set in the component.
	 *
	 * @since   3.2
	 */
	protected function canEditState($record)
	{
		$user = JFactory::getUser();

		// Check for existing module.
		if (!empty($record->id))
		{
			return $user->authorise('core.edit.state', 'com_modules.module.' . (int) $record->id);
		}
		// Default to component settings if module not known.
		else
		{
			return parent::canEditState('com_modules');
		}
	}

	/**
	 * Method to delete rows.
	 *
	 * @param   array  &$pks  An array of item ids.
	 *
	 * @return  boolean  Returns true on success, false on failure.
	 *
	 * @since   1.6
	 * @throws  Exception
	 */
	public function delete(&$pks)
	{
		$dispatcher = JEventDispatcher::getInstance();
		$pks        = (array) $pks;
		$user       = JFactory::getUser();
		$table      = $this->getTable();
		$db         = $this->getDbo();
		$query      = $db->getQuery(true);
		$context    = $this->option . '.' . $this->name;

		// Include the plugins for the on delete events.
		JPluginHelper::importPlugin('extension');

		// Iterate the items to delete each one.
		foreach ($pks as $pk)
		{
			if ($table->load($pk))
			{
				// Access checks.
				if (!$user->authorise('core.delete', 'com_modules.module.' . (int) $pk) || $table->published != -2)
				{
					JError::raiseWarning(403, JText::_('JERROR_CORE_DELETE_NOT_PERMITTED'));

					return;
				}

				// Trigger the before delete event.
				$result = $dispatcher->trigger($this->event_before_delete, array($context, $table));

				if (in_array(false, $result, true) || !$table->delete($pk))
				{
					throw new Exception($table->getError());
				}
				else
				{
					// Delete the menu assignments
					$query->clear()
						->delete('#__modules_menu')
						->where('moduleid=' . (int) $pk);
					$db->setQuery($query);
					$db->execute();

					$query->clear()
						->delete('#__advancedmodules')
						->where('moduleid=' . (int) $pk);
					$db->setQuery($query);
					$db->execute();

					// delete asset
					$query->clear()
						->delete('#__assets')
						->where('name = ' . $db->quote('com_modules.module.' . (int) $pk));
					$db->setQuery($query);
					$db->execute();

					$query->clear()
						->delete('#__assets')
						->where('name = ' . $db->quote('com_advancedmodules.module.' . (int) $pk));
					$db->setQuery($query);
					$db->execute();

					// Trigger the after delete event.
					$dispatcher->trigger($this->event_after_delete, array($context, $table));
				}

				// Clear module cache
				parent::cleanCache($table->module, $table->client_id);
			}
			else
			{
				throw new Exception($table->getError());
			}
		}

		// Clear modules cache
		$this->cleanCache();

		return true;
	}

	/**
	 * Method to duplicate modules.
	 *
	 * @param   array  &$pks  An array of primary key IDs.
	 *
	 * @return  boolean  True if successful.
	 *
	 * @since   1.6
	 * @throws  Exception
	 */
	public function duplicate(&$pks)
	{
		$user = JFactory::getUser();

		// Access checks.
		if (!$user->authorise('core.create', 'com_modules'))
		{
			throw new Exception(JText::_('JERROR_CORE_CREATE_NOT_PERMITTED'));
		}

		$db = $this->getDbo();
		$query = $db->getQuery(true);
		$inserts = array();
		$table = $this->getTable();
		$table_adv = JTable::getInstance('AdvancedModules', 'AdvancedModulesTable');

		foreach ($pks as $pk)
		{
			if ($table->load($pk, true))
			{
				// Reset the id to create a new record.
				$table->id = 0;

				// Alter the title.
				$m = null;

				if (preg_match('#\((\d+)\)$#', $table->title, $m))
				{
					$table->title = preg_replace('#\(\d+\)$#', '(' . ($m[1] + 1) . ')', $table->title);
				}

				$data = $this->generateNewTitle(0, $table->title, $table->position);
				$table->title = $data[0];

				// Unpublish duplicate module
				$table->published = 0;

				if (!$table->check() || !$table->store())
				{
					throw new Exception($table->getError());
				}

				$query->clear()
					->select($db->quoteName('menuid'))
					->from($db->quoteName('#__modules_menu'))
					->where($db->quoteName('moduleid') . ' = ' . (int) $pk);

				$db->setQuery($query);
				$rows = $db->loadColumn();

				foreach ($rows as $menuid)
				{
					$inserts[(int) $table->id . '-' . (int) $menuid] = (int) $table->id . ',' . (int) $menuid;
				}

				if ($table->id && !$table_adv->load($table->id))
				{
					$table_adv->moduleid = $table->id;
					$db->insertObject($table_adv->getTableName(), $table_adv, $table_adv->getKeyName());
				}

				if ($table_adv->load($pk, true))
				{
					$table_adv->moduleid = $table->id;

					$rules = JAccess::getAssetRules('com_modules.module.' . $pk);
					$table_adv->setRules($rules);

					if (!$table_adv->check() || !$table_adv->store())
					{
						throw new Exception($table_adv->getError());
					}
				}
			}
			else
			{
				throw new Exception($table->getError());
			}
		}

		if (!empty($inserts))
		{
			// Module-Menu Mapping: Do it in one query
			$query->clear()
				->insert('#__modules_menu')
				->columns(array($db->quoteName('moduleid'), $db->quoteName('menuid')));
			foreach($inserts as $insert)
			{
				$query->values($insert);
			}
			$db->setQuery($query);
			try
			{
				$db->execute();
			}
			catch (RuntimeException $e)
			{
				return JError::raiseWarning(500, $e->getMessage());
			}
		}

		// Clear modules cache
		$this->cleanCache();

		return true;
	}

	/**
	 * Method to set color of modules.
	 *
	 * @param   array  &$pks  An array of primary key IDs.
	 * @param   string $color RGB color
	 *
	 * @return  boolean  True if successful.
	 *
	 * @since   1.6
	 * @throws  Exception
	 */
	public function setcolor(&$pks, $color)
	{
		// Set the variables
		$db = $this->getDbo();
		$user = JFactory::getUser();
		$table_adv = JTable::getInstance('AdvancedModules', 'AdvancedModulesTable');

		foreach ($pks as $pk)
		{
			if ($user->authorise('core.edit', 'com_modules'))
			{
				if (!$table_adv->load($pk))
				{
					$table_adv->moduleid = $pk;
					$db->insertObject($table_adv->getTableName(), $table_adv, $table_adv->getKeyName());
				}

				if ($table_adv->load($pk, true))
				{
					$params = json_decode($table_adv->params);

					$params->color = strtolower($color);

					$table_adv->params = json_encode($params);

					if (!$table_adv->check() || !$table_adv->store())
					{
						$this->setError($table_adv->getError());
						return false;
					}
				}
			}
			else
			{
				$this->setError(JText::_('JLIB_APPLICATION_ERROR_BATCH_CANNOT_EDIT'));
				return false;
			}
		}

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

		return true;
	}

	/**
	 * Method to change the title.
	 *
	 * @param   integer  $category_id  The id of the category. Not used here.
	 * @param   string   $title        The title.
	 * @param   string   $position     The position.
	 *
	 * @return  array  Contains the modified title.
	 *
	 * @since   2.5
	 */
	protected function generateNewTitle($category_id, $title, $position)
	{
		// Alter the title & alias
		$table = $this->getTable();

		while ($table->load(array('position' => $position, 'title' => $title)))
		{
			$title = JString::increment($title);
		}

		return array($title);
	}

	/**
	 * Method to get the client object
	 *
	 * @return  void
	 *
	 * @since   1.6
	 */
	public function &getClient()
	{
		return $this->_client;
	}

	/**
	 * Method to get the record form.
	 *
	 * @param   array    $data      Data for the form.
	 * @param   boolean  $loadData  True if the form is to load its own data (default case), false if not.
	 *
	 * @return  JForm  A JForm object on success, false on failure
	 *
	 * @since   1.6
	 */
	public function getForm($data = array(), $loadData = true)
	{
		// The folder and element vars are passed when saving the form.
		if (empty($data))
		{
			$item		= $this->getItem();
			$clientId	= $item->client_id;
			$module		= $item->module;
			$id			= $item->id;
		}
		else
		{
			$clientId	= JArrayHelper::getValue($data, 'client_id');
			$module		= JArrayHelper::getValue($data, 'module');
			$id			= JArrayHelper::getValue($data, 'id');
		}

		// These variables are used to add data from the plugin XML files.
		$this->setState('item.client_id', $clientId);
		$this->setState('item.module', $module);

		// Get the form.
		$form = $this->loadForm('com_advancedmodules.module', 'module', array('control' => 'jform', 'load_data' => $loadData));

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

		$form->setFieldAttribute('position', 'client', $this->getState('item.client_id') == 0 ? 'site' : 'administrator');

		$user = JFactory::getUser();

		/**
		 * Check for existing module
		 * Modify the form based on Edit State access controls.
		 */
		if ($id != 0 && (!$user->authorise('core.edit.state', 'com_modules.module.' . (int) $id))
			|| ($id == 0 && !$user->authorise('core.edit.state', 'com_modules'))
		)
		{
			// Disable fields for display.
			$form->setFieldAttribute('ordering', 'disabled', 'true');
			$form->setFieldAttribute('published', 'disabled', 'true');
			$form->setFieldAttribute('publish_up', 'disabled', 'true');
			$form->setFieldAttribute('publish_down', 'disabled', 'true');

			// Disable fields while saving.
			// The controller has already verified this is a record you can edit.
			$form->setFieldAttribute('ordering', 'filter', 'unset');
			$form->setFieldAttribute('published', 'filter', 'unset');
			$form->setFieldAttribute('publish_up', 'filter', 'unset');
			$form->setFieldAttribute('publish_down', 'filter', 'unset');
		}

		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()
	{
		$app = JFactory::getApplication();

		// Check the session for previously entered form data.
		$data = JFactory::getApplication()->getUserState('com_advancedmodules.edit.module.data', array());

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

			// This allows us to inject parameter settings into a new module.
			$params = $app->getUserState('com_advancedmodules.add.module.params');

			if (is_array($params))
			{
				$data->set('params', $params);
			}
		}

		$this->preprocessData('com_advancedmodules.module', $data);

		return $data;
	}

	/**
	 * Method to get a single record.
	 *
	 * @param   integer  $pk  The id of the primary key.
	 *
	 * @return  mixed  Object on success, false on failure.
	 *
	 * @since   1.6
	 */
	public function getItem($pk = null)
	{
		$pk = (!empty($pk)) ? (int) $pk : (int) $this->getState('module.id');
		$db = $this->getDbo();
		$query = $db->getQuery(true);

		if (!isset($this->_cache[$pk]))
		{
			$false = false;

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

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

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

				return $false;
			}

			// Check if we are creating a new extension.
			if (empty($pk))
			{
				if ($extensionId = (int) $this->getState('extension.id'))
				{
					$query->clear()
						->select('e.element, e.client_id')
						->from('#__extensions as e')
						->where('e.extension_id = ' . $extensionId)
						->where('e.type = ' . $db->quote('module'));
					$db->setQuery($query);

					try
					{
						$extension = $db->loadObject();
					}
					catch (RuntimeException $e)
					{
						$this->setError($e->getMessage());

						return false;
					}

					if (empty($extension))
					{
						$this->setError('COM_MODULES_ERROR_CANNOT_FIND_MODULE');

						return false;
					}

					// Extension found, prime some module values.
					$table->module    = $extension->element;
					$table->client_id = $extension->client_id;
				}
				else
				{
					$app = JFactory::getApplication();
					$app->redirect(JRoute::_('index.php?option=com_advancedmodules&view=modules', false));

					return false;
				}
			}

			// Convert to the JObject before adding other data.
			$properties        = $table->getProperties(1);
			$this->_cache[$pk] = JArrayHelper::toObject($properties, 'JObject');

			// Convert the params field to an array.
			$this->_cache[$pk]->params = json_decode($table->params, true);

			// Advanced parameters
			// Get a row instance.
			$table_adv = $this->getTable('AdvancedModules', 'AdvancedModulesTable');

			// Attempt to load the row.
			$table_adv->load($pk);

			$this->_cache[$pk]->asset_id = $table_adv->asset_id;

			// Convert the params field to an array.
			$this->_cache[$pk]->advancedparams = json_decode($table_adv->params, true);

			$this->_cache[$pk]->advancedparams = $this->initAssignments($pk, $this->_cache[$pk]);

			$assigned = array();
			$assignment = 0;
			if (isset($this->_cache[$pk]->advancedparams['assignto_menuitems']) && isset($this->_cache[$pk]->advancedparams['assignto_menuitems_selection']))
			{
				$assigned = $this->_cache[$pk]->advancedparams['assignto_menuitems_selection'];
				if ($this->_cache[$pk]->advancedparams['assignto_menuitems'] == 1 && empty($this->_cache[$pk]->advancedparams['assignto_menuitems_selection']))
				{
					$assignment = '-';
				}
				else if ($this->_cache[$pk]->advancedparams['assignto_menuitems'] == 1)
				{
					$assignment = '1';
				}
				else if ($this->_cache[$pk]->advancedparams['assignto_menuitems'] == 2)
				{
					$assignment = '-1';
				}
			}

			$this->_cache[$pk]->assigned   = $assigned;
			$this->_cache[$pk]->assignment = $assignment;

			// Get the module XML.
			$client = JApplicationHelper::getClientInfo($table->client_id);
			$path   = JPath::clean($client->path . '/modules/' . $table->module . '/' . $table->module . '.xml');

			if (file_exists($path))
			{
				$this->_cache[$pk]->xml = simplexml_load_file($path);
			}
			else
			{
				$this->_cache[$pk]->xml = null;
			}
		}

		return $this->_cache[$pk];
	}

	/**
	 * Get the necessary data to load an item help screen.
	 *
	 * @return  object  An object with key, url, and local properties for loading the item help screen.
	 *
	 * @since   1.6
	 */
	public function getHelp()
	{
		return (object) array('key' => $this->helpKey, 'url' => $this->helpURL);
	}

	/**
	 * Returns a reference to the a Table object, always creating it.
	 *
	 * @param   string  $type    The table type to instantiate
	 * @param   string  $prefix  A prefix for the table class name. Optional.
	 * @param   array   $config  Configuration array for model. Optional.
	 *
	 * @return  JTable  A database object
	 *
	 * @since   1.6
	 */
	public function getTable($type = 'Module', $prefix = 'JTable', $config = array())
	{
		return JTable::getInstance($type, $prefix, $config);
	}

	/**
	 * Prepare and sanitise the table prior to saving.
	 *
	 * @param   JTable  $table  The database object
	 *
	 * @return  void
	 *
	 * @since   1.6
	 */
	protected function prepareTable($table)
	{
		$table->title		= htmlspecialchars_decode($table->title, ENT_QUOTES);
		$table->position	= trim($table->position);
	}

	/**
	 * Method to preprocess the form
	 *
	 * @param   JForm   $form   A form object.
	 * @param   mixed   $data   The data expected for the form.
	 * @param   string  $group  The name of the plugin group to import (defaults to "content").
	 *
	 * @return  void
	 *
	 * @since   1.6
	 * @throws  Exception if there is an error loading the form.
	 */
	protected function preprocessForm(JForm $form, $data, $group = 'content')
	{
		jimport('joomla.filesystem.path');

		$lang     = JFactory::getLanguage();
		$clientId = $this->getState('item.client_id');
		$module   = $this->getState('item.module');

		$client   = JApplicationHelper::getClientInfo($clientId);
		$formFile = JPath::clean($client->path . '/modules/' . $module . '/' . $module . '.xml');

		// Load the core and/or local language file(s).
		$lang->load($module, $client->path, null, false, true)
		||	$lang->load($module, $client->path . '/modules/' . $module, null, false, true);

		if (file_exists($formFile))
		{
			// Get the module form.
			if (!$form->loadFile($formFile, false, '//config'))
			{
				throw new Exception(JText::_('JERROR_LOADFILE_FAILED'));
			}

			// Attempt to load the xml file.
			if (!$xml = simplexml_load_file($formFile))
			{
				throw new Exception(JText::_('JERROR_LOADFILE_FAILED'));
			}

			// Get the help data from the XML file if present.
			$help = $xml->xpath('/extension/help');

			if (!empty($help))
			{
				$helpKey = trim((string) $help[0]['key']);
				$helpURL = trim((string) $help[0]['url']);

				$this->helpKey = $helpKey ? $helpKey : $this->helpKey;
				$this->helpURL = $helpURL ? $helpURL : $this->helpURL;
			}
		}

		// Load the default advanced params
		JForm::addFormPath(JPATH_ADMINISTRATOR . '/components/com_advancedmodules/models/forms');
		$form->loadFile('advanced', false);

		// Trigger the default form events.
		parent::preprocessForm($form, $data, $group);
	}

	/**
	 * Loads ContentHelper for filters before validating data.
	 *
	 * @param   object  $form   The form to validate against.
	 * @param   array   $data   The data to validate.
	 * @param   string  $group  The name of the group(defaults to null).
	 *
	 * @return  mixed  Array of filtered data if valid, false otherwise.
	 *
	 * @since   1.1
	 */
	public function validate($form, $data, $group = null)
	{
		require_once JPATH_ADMINISTRATOR . '/components/com_content/helpers/content.php';

		return parent::validate($form, $data, $group);
	}

	/**
	 * Applies the text filters to arbitrary text as per settings for current user groups
	 *
	 * @param   text  $text  The string to filter
	 *
	 * @return  string  The filtered string
	 */
	public static function filterText($text)
	{
		return JComponentHelper::filterText($text);
	}

	/**
	 * Method to save the form data.
	 *
	 * @param   array  $data  The form data.
	 *
	 * @return  boolean  True on success.
	 *
	 * @since   1.6
	 */
	public function save($data)
	{
		$advancedparams = JFactory::getApplication()->input->get('advancedparams', array(), 'array');

		$dispatcher = JEventDispatcher::getInstance();
		$input      = JFactory::getApplication()->input;
		$table      = $this->getTable();
		$pk         = (!empty($data['id'])) ? $data['id'] : (int) $this->getState('module.id');
		$isNew      = true;
		$context    = $this->option . '.' . $this->name;

		// Include the plugins for the save event.
		JPluginHelper::importPlugin('extension');

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

		// Alter the title and published state for Save as Copy
		if ($input->get('task') == 'save2copy')
		{
			$orig_table = clone $this->getTable();
			$orig_table->load((int) $input->getInt('id'));
			$data['published'] = 0;

			if ($data['title'] == $orig_table->title)
			{
				$data['title'] .= ' ' . JText::_('JGLOBAL_COPY');
			}
		}

		require_once JPATH_PLUGINS . '/system/nnframework/helpers/text.php';

		// correct the publish date details
		if (isset($advancedparams['assignto_date_publish_up']))
		{
			nnText::fixDateOffset($advancedparams['assignto_date_publish_up']);
		}

		if (isset($advancedparams['assignto_date_publish_down']))
		{
			nnText::fixDateOffset($advancedparams['assignto_date_publish_down']);
		}

		if (isset($advancedparams['assignto_date']))
		{
			$publish_up = 0;
			$publish_down = 0;
			if ($advancedparams['assignto_date'] == 2)
			{
				$publish_up = $advancedparams['assignto_date_publish_down'];
			}
			else if ($advancedparams['assignto_date'] == 1)
			{
				$publish_up = $advancedparams['assignto_date_publish_up'];
				$publish_down = $advancedparams['assignto_date_publish_down'];
			}

			$data['publish_up'] = $publish_up;
			$data['publish_down'] = $publish_down;
		}

		$lang = '*';
		if (isset($advancedparams['assignto_languages'])
			&& $advancedparams['assignto_languages'] == 1
			&& count($advancedparams['assignto_languages_selection']) === 1
		)
		{
			$lang = (string) $advancedparams['assignto_languages_selection']['0'];
		}
		$data['language'] = $lang;

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

			return false;
		}

		// Prepare the row for saving
		$this->prepareTable($table);

		// 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));

		if (in_array(false, $result, true))
		{
			$this->setError($table->getError());

			return false;
		}

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

			return false;
		}

		$table_adv = JTable::getInstance('AdvancedModules', 'AdvancedModulesTable');

		$table_adv->moduleid = $table->id;
		if ($table_adv->moduleid && !$table_adv->load($table_adv->moduleid))
		{
			$db = $table_adv->getDbo();
			$db->insertObject($table_adv->getTableName(), $table_adv, $table_adv->getKeyName());
		}

		if (isset($data['rules']))
		{
			$table_adv->_title = $data['title'];
			$table_adv->setRules($data['rules']);
		}

		$table_adv->params = json_encode($advancedparams);

		// Check the row
		$table_adv->check();

		// Store the row
		if (!$table_adv->store())
		{
			$this->setError($table_adv->getError());
		}

		//
		// Process the menu link mappings.
		//
		$data['assignment'] = '0';
		$data['assigned'] = array();
		if (isset($advancedparams['assignto_menuitems']))
		{
			$empty = 0;
			if (isset($advancedparams['assignto_menuitems_selection']))
			{
				$data['assigned'] = $advancedparams['assignto_menuitems_selection'];
				$empty = empty($advancedparams['assignto_menuitems_selection']);
			}
			else
			{
				$empty = 1;
			}
			if ($advancedparams['assignto_menuitems'] == 1 && $empty)
			{
				$data['assignment'] = '-';
			}
			else if ($advancedparams['assignto_menuitems'] == 1)
			{
				$data['assignment'] = '1';
			}
			else if ($advancedparams['assignto_menuitems'] == 2 && $empty)
			{
				$data['assignment'] = '0';
			}
			else if ($advancedparams['assignto_menuitems'] == 2)
			{
				$data['assignment'] = '-1';
			}
		}

		$assignment = $data['assignment'];

		$db = $this->getDbo();
		$query = $db->getQuery(true)
			->delete('#__modules_menu')
			->where('moduleid = ' . (int) $table->id);
		$db->setQuery($query);
		$db->execute();

		// If the assignment is numeric, then something is selected (otherwise it's none).
		if (is_numeric($assignment))
		{
			// Variable is numeric, but could be a string.
			$assignment = (int) $assignment;

			// Logic check: if no module excluded then convert to display on all.
			if ($assignment == -1 && empty($data['assigned']))
			{
				$assignment = 0;
			}

			// Check needed to stop a module being assigned to `All`
			// and other menu items resulting in a module being displayed twice.
			if ($assignment === 0)
			{
				// Assign new module to `all` menu item associations.
				$query->clear()
					->insert('#__modules_menu')
					->columns(array($db->quoteName('moduleid'), $db->quoteName('menuid')))
					->values((int) $table->id . ', 0');
				$db->setQuery($query);

				try
				{
					$db->execute();
				}
				catch (RuntimeException $e)
				{
					$this->setError($e->getMessage());

					return false;
				}
			}
			elseif (!empty($data['assigned']))
			{
				// Get the sign of the number.
				$sign = $assignment < 0 ? -1 : 1;

				// Preprocess the assigned array.
				$inserts = array();
				if (!is_array($data['assigned']))
				{
					$data['assigned'] = explode(',', $data['assigned']);
				}

				foreach ($data['assigned'] as &$pk)
				{
					if(is_numeric($pk)) {
						$menuid = (int) $pk * $sign;
						$inserts[(int) $table->id . '-' . $menuid] = (int) $table->id . ',' . $menuid;
					}
				}

				if (!empty($inserts))
				{
					$query->clear()
						->insert('#__modules_menu')
						->columns(array($db->quoteName('moduleid'), $db->quoteName('menuid')));
					foreach ($inserts as $insert)
					{
						$query->values($insert);
					}
					$db->setQuery($query);
					try
					{
						$db->execute();
					}
					catch (RuntimeException $e)
					{
						$this->setError($e->getMessage());

						return false;
					}
				}
			}
		}

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

		// Compute the extension id of this module in case the controller wants it.
		$query->clear()
			->select('extension_id')
			->from('#__extensions AS e')
			->join('LEFT', '#__modules AS m ON e.element = m.module')
			->where('m.id = ' . (int) $table->id);
		$db->setQuery($query);

		try
		{
			$extensionId = $db->loadResult();
		}
		catch (RuntimeException $e)
		{
			JError::raiseWarning(500, $e->getMessage());

			return false;
		}

		$this->setState('module.extension_id', $extensionId);
		$this->setState('module.id', $table->id);

		// Clear modules cache
		$this->cleanCache();

		// Clean module cache
		parent::cleanCache($table->module, $table->client_id);

		return true;
	}

	/**
	 * Method to save the advanced parameters.
	 *
	 * @param    array    $data    The form data.
	 *
	 * @return    boolean    True on success.
	 * @since    1.6
	 */
	public function saveAdvancedParams($data, $id = 0)
	{
		if (!$id)
		{
			$id = JFactory::getApplication()->input->getInt('id');
		}

		if (!$id)
		{
			return true;
		}

		require_once JPATH_ADMINISTRATOR . '/components/com_advancedmodules/tables/advancedmodules.php';
		$table_adv = JTable::getInstance('AdvancedModules', 'AdvancedModulesTable');
		$table_adv->moduleid = $id;

		if ($id && !$table_adv->load($id))
		{
			$db = $table_adv->getDbo();
			$db->insertObject($table_adv->getTableName(), $table_adv, $table_adv->getKeyName());
		}

		if (isset($data['rules']))
		{
			$table_adv->_title = $data['title'];
			$table_adv->setRules($data['rules']);
		}

		$table_adv->params = json_encode($data);

		// Check the row
		$table_adv->check();

		try
		{
			// Store the data.
			$table_adv->store();
		}
		catch (RuntimeException $e)
		{
			JError::raiseWarning(500, $e->getMessage());
			return false;
		}

		return true;
	}

	/**
	 * Method to get and save the module core menu assignments
	 *
	 * @param    int    $id    The module id.
	 *
	 * @return    boolean    True on success.
	 * @since    1.6
	 */
	public function initAssignments($id, &$module)
	{
		if (!$id)
		{
			$id = JFactory::getApplication()->input->getInt('id');
		}

		if (empty($id))
		{
			$module->advancedparams = array(
				'assignto_menuitems' => $this->config->default_menu_assignment,
				'assignto_menuitems_selection' => array()
			);
		}
		else
		{
			if (is_object($module->advancedparams))
			{
				$module->advancedparams = (array) $module->advancedparams;
			}

			if (!isset($module->advancedparams['assignto_menuitems']))
			{
				$db = $this->getDbo();
				$query = $db->getQuery(true)
					->select('m.menuid')
					->from('#__modules_menu as m')
					->where('m.moduleid = ' . (int) $id);
				$db->setQuery($query);
				$module->advancedparams['assignto_menuitems_selection'] = $db->loadColumn();
				$module->advancedparams['assignto_menuitems'] = 0;
				if (!empty($module->advancedparams['assignto_menuitems_selection']))
				{
					if ($module->advancedparams['assignto_menuitems_selection']['0'] == 0)
					{
						$module->advancedparams['assignto_menuitems'] = 0;
						$module->advancedparams['assignto_menuitems_selection'] = array();
					}
					else if ($module->advancedparams['assignto_menuitems_selection']['0'] < 0)
					{
						$module->advancedparams['assignto_menuitems'] = 2;
					}
					else
					{
						$module->advancedparams['assignto_menuitems'] = 1;
					}
					foreach ($module->advancedparams['assignto_menuitems_selection'] as $i => $menuitem)
					{
						if ($menuitem < 0)
						{
							$module->advancedparams['assignto_menuitems_selection'][$i] = $menuitem * -1;
						}
					}
				}
			} else if( isset($module->advancedparams['assignto_menuitems_selection']['0']) && strpos($module->advancedparams['assignto_menuitems_selection']['0'], ',') !== false)
			{
				$module->advancedparams['assignto_menuitems_selection'] = explode(',', $module->advancedparams['assignto_menuitems_selection']['0']);
			}

			if (!isset($module->advancedparams['assignto_date']) || !$module->advancedparams['assignto_date'])
			{
				if ((isset($module->publish_up) && (int) $module->publish_up)
					|| (isset($module->publish_down) && (int) $module->publish_down)
				)
				{
					$module->advancedparams['assignto_date'] = 1;
					$module->advancedparams['assignto_date_publish_up'] = isset($module->publish_up) ? $module->publish_up : '';
					$module->advancedparams['assignto_date_publish_down'] = isset($module->publish_down) ? $module->publish_down : '';
				}
			}

			if (!isset($module->advancedparams['assignto_languages']) || !$module->advancedparams['assignto_languages'])
			{
				if (isset($module->language) && $module->language && $module->language != '*')
				{
					$module->advancedparams['assignto_languages'] = 1;
					$module->advancedparams['assignto_languages_selection'] = array($module->language);
				}
			}
		}

		AdvancedModulesModelModule::saveAdvancedParams($module->advancedparams, $id);

		return $module->advancedparams;
	}

	/**
	 * A protected method to get a set of ordering conditions.
	 *
	 * @param   object  $table  A record object.
	 *
	 * @return  array  An array of conditions to add to add to ordering queries.
	 *
	 * @since   1.6
	 */
	protected function getReorderConditions($table)
	{
		$condition = array();
		$condition[] = 'client_id = ' . (int) $table->client_id;
		$condition[] = 'position = ' . $this->_db->quote($table->position);

		return $condition;
	}

	/**
	 * Custom clean cache method for different clients
	 *
	 * @param   string   $group      The name of the plugin group to import (defaults to null).
	 * @param   integer  $client_id  The client ID. [optional]
	 *
	 * @return  void
	 *
	 * @since   1.6
	 */
	protected function cleanCache($group = null, $client_id = 0)
	{
		parent::cleanCache('com_advancedmodules', $this->getClient());
	}

	/**
	 * Method to test whether a record can be deleted.
	 *
	 * @param    object    $record    A record object.
	 *
	 * @return    boolean    True if allowed to delete the record. Defaults to the permission set in the component.
	 */
	protected function canDelete($record)
	{
		if (!empty($record->id))
		{
			if ($record->state != -2)
			{
				return;
			}
			$user = JFactory::getUser();
			return $user->authorise('core.delete', 'com_modules.module.' . (int) $record->id);
		}
	}

	/**
	 * Method override to check if you can edit an existing record.
	 *
	 * @param   array   $data  An array of input data.
	 * @param   string  $key   The name of the key for the primary key.
	 *
	 * @return  boolean
	 */
	protected function allowEdit($data = array(), $key = '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', 'com_modules.module.' . $recordId))
		{
			return true;
		}

		// Since there is no asset tracking, revert to the component permissions.
		return parent::allowEdit($data, $key);
	}

	/**
	 * Function that gets the config settings
	 *
	 * @return    Object
	 */
	protected function getConfig()
	{
		if (!isset($this->config))
		{
			require_once JPATH_PLUGINS . '/system/nnframework/helpers/parameters.php';
			$parameters = nnParameters::getInstance();
			$this->config = $parameters->getComponentParams('advancedmodules');
		}
		return $this->config;
	}
}