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<?php
/**
 * @package Joomla.Administrator
 * @subpackage com_finder
 *
 * @copyright (C) 2011 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\Service\HTML;

use Joomla\CMS\Factory;
use Joomla\CMS\Language\Text;
use Joomla\Component\Finder\Administrator\Helper\LanguageHelper;
use Joomla\Component\Finder\Administrator\Indexer\Query as IndexerQuery;

\defined('_JEXEC') or die;

/**
 * Query HTML behavior class for Finder.
 *
 * @since  2.5
 */
class Query
{
	/**
	 * Method to get the explained (human-readable) search query.
	 *
	 * @param   IndexerQuery  $query  A IndexerQuery object to explain.
	 *
	 * @return  mixed  String if there is data to explain, null otherwise.
	 *
	 * @since   2.5
	 */
	public static function explained(IndexerQuery $query)
	{
		$parts = array();

// Process the required tokens.
		foreach ($query->included as $token)
		{
			if ($token->required && (!isset($token->derived) || $token->derived == false))
			{
				$parts[] = '' . Text::sprintf('COM_FINDER_QUERY_TOKEN_REQUIRED', $token->term) . '';
			}
		}

// Process the optional tokens.
		foreach ($query->included as $token)
		{
			if (!$token->required && (!isset($token->derived) || $token->derived == false))
			{
				$parts[] = '' . Text::sprintf('COM_FINDER_QUERY_TOKEN_OPTIONAL', $token->term) . '';
			}
		}

// Process the excluded tokens.
		foreach ($query->excluded as $token)
		{
			if (!isset($token->derived) || $token->derived === false)
			{
				$parts[] = '' . Text::sprintf('COM_FINDER_QUERY_TOKEN_EXCLUDED', $token->term) . '';
			}
		}

// Process the start date.
		if ($query->date1)
		{
			$date = Factory::getDate($query->date1)->format(Text::_('DATE_FORMAT_LC'));
			$datecondition = Text::_('COM_FINDER_QUERY_DATE_CONDITION_' . strtoupper($query->when1));
			$parts[] = '' . Text::sprintf('COM_FINDER_QUERY_START_DATE', $datecondition, $date) . '';
		}

// Process the end date.
		if ($query->date2)
		{
			$date = Factory::getDate($query->date2)->format(Text::_('DATE_FORMAT_LC'));
			$datecondition = Text::_('COM_FINDER_QUERY_DATE_CONDITION_' . strtoupper($query->when2));
			$parts[] = '' . Text::sprintf('COM_FINDER_QUERY_END_DATE', $datecondition, $date) . '';
		}

// Process the taxonomy filters.
		if (!empty($query->filters))
		{
			// Get the filters in the request.
			$t = Factory::getApplication()->input->request->get('t', array(), 'array');

// Process the taxonomy branches.
			foreach ($query->filters as $branch => $nodes)
			{
				// Process the taxonomy nodes.
				$lang = Factory::getLanguage();

foreach ($nodes as $title => $id)
				{
					// Translate the title for Types
					$key = LanguageHelper::branchPlural($title);

if ($lang->hasKey($key))
					{
						$title = Text::_($key);
					}

// Don't include the node if it is not in the request.
					if (!in_array($id, $t))
					{
						continue;
					}

// Add the node to the explanation.
					$parts[] = ''
						. Text::sprintf('COM_FINDER_QUERY_TAXONOMY_NODE', $title, Text::_(LanguageHelper::branchSingular($branch)))
						. '';
				}
			}
		}

// Build the interpreted query.
		return count($parts) ? implode(Text::_('COM_FINDER_QUERY_TOKEN_GLUE'), $parts) : null;
	}

/**
	 * Method to get the suggested search query.
	 *
	 * @param   IndexerQuery  $query  A IndexerQuery object.
	 *
	 * @return  mixed  String if there is a suggestion, false otherwise.
	 *
	 * @since   2.5
	 */
	public static function suggested(IndexerQuery $query)
	{
		$suggested = false;

// Check if the query input is empty.
		if (empty($query->input))
		{
			return $suggested;
		}

// Check if there were any ignored or included keywords.
		if (count($query->ignored) || count($query->included))
		{
			$suggested = $query->input;

// Replace the ignored keyword suggestions.
			foreach (array_reverse($query->ignored) as $token)
			{
				if (isset($token->suggestion))
				{
					$suggested = str_ireplace($token->term, $token->suggestion, $suggested);
				}
			}

// Replace the included keyword suggestions.
			foreach (array_reverse($query->included) as $token)
			{
				if (isset($token->suggestion))
				{
					$suggested = str_ireplace($token->term, $token->suggestion, $suggested);
				}
			}

// Check if we made any changes.
			if ($suggested == $query->input)
			{
				$suggested = false;
			}
		}

return $suggested;
	}
}