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<?php
/**
 * @package     Joomla.Administrator
 * @subpackage  com_finder
 *
 * @copyright   (C) 2018 Open Source Matters, Inc. <https://www.joomla.org>
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\Component\Finder\Administrator\Model;

\defined('_JEXEC') or die;

use Joomla\CMS\Component\ComponentHelper;
use Joomla\CMS\MVC\Factory\MVCFactoryInterface;
use Joomla\CMS\MVC\Model\ListModel;

/**
 * Methods supporting a list of search terms.
 *
 * @since  4.0.0
 */
class SearchesModel extends ListModel
{
	/**
	 * Constructor.
	 *
	 * @param   array                $config   An optional associative array of configuration settings.
	 * @param   MVCFactoryInterface  $factory  The factory.
	 *
	 * @see     \Joomla\CMS\MVC\Model\BaseDatabaseModel
	 * @since   4.0.0
	 */
	public function __construct($config = array(), MVCFactoryInterface $factory = null)
	{
		if (empty($config['filter_fields']))
		{
			$config['filter_fields'] = array(
				'searchterm', 'a.searchterm',
				'hits', 'a.hits',
			);
		}

parent::__construct($config, $factory);
	}

/**
	 * Method to auto-populate the model state.
	 *
	 * Note. Calling getState in this method will result in recursion.
	 *
	 * @param   string  $ordering   An optional ordering field.
	 * @param   string  $direction  An optional direction (asc|desc).
	 *
	 * @return  void
	 *
	 * @since   4.0.0
	 */
	protected function populateState($ordering = 'a.hits', $direction = 'asc')
	{
		// Special state for toggle results button.
		$this->setState('show_results', $this->getUserStateFromRequest($this->context . '.show_results', 'show_results', 1, 'int'));

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

// List state information.
		parent::populateState($ordering, $direction);
	}

/**
	 * Method to get a store id based on model configuration state.
	 *
	 * This is necessary because the model is used by the component and
	 * different modules that might need different sets of data or different
	 * ordering requirements.
	 *
	 * @param   string  $id  A prefix for the store id.
	 *
	 * @return  string  A store id.
	 *
	 * @since   4.0.0
	 */
	protected function getStoreId($id = '')
	{
		// Compile the store id.
		$id .= ':' . $this->getState('show_results');
		$id .= ':' . $this->getState('filter.search');

return parent::getStoreId($id);
	}

/**
	 * Build an SQL query to load the list data.
	 *
	 * @return  \JDatabaseQuery
	 *
	 * @since   4.0.0
	 */
	protected function getListQuery()
	{
		// Create a new query object.
		$db = $this->getDbo();
		$query = $db->getQuery(true);

// Select the required fields from the table.
		$query->select(
			$this->getState(
				'list.select',
				'a.*'
			)
		);
		$query->from($db->quoteName('#__finder_logging', 'a'));

// Filter by search in title
		if ($search = $this->getState('filter.search'))
		{
			$search = $db->quote('%' . str_replace(' ', '%', $db->escape(trim($search), true) . '%'));
			$query->where($db->quoteName('a.searchterm') . ' LIKE ' . $search);
		}

// Add the list ordering clause.
		$query->order($db->escape($this->getState('list.ordering', 'a.hits')) . ' ' . $db->escape($this->getState('list.direction', 'ASC')));

return $query;
	}

/**
	 * Override the parent getItems to inject optional data.
	 *
	 * @return  mixed  An array of objects on success, false on failure.
	 *
	 * @since   4.0.0
	 */
	public function getItems()
	{
		$items = parent::getItems();

foreach ($items as $item)
		{
			if (is_resource($item->query))
			{
				$item->query = unserialize(stream_get_contents($item->query));
			}
			else
			{
				$item->query = unserialize($item->query);
			}
		}

return $items;
	}

/**
	 * Method to reset the search log table.
	 *
	 * @return  boolean
	 *
	 * @since   4.0.0
	 */
	public function reset()
	{
		$db = $this->getDbo();

try
		{
			$db->truncateTable('#__finder_logging');
		}
		catch (\RuntimeException $e)
		{
			$this->setError($e->getMessage());

return false;
		}

return true;
	}
}