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<?php
/**
 * @package     Joomla.Administrator
 * @subpackage  com_modules
 *
 * @copyright   (C) 2017 Open Source Matters, Inc. <https://www.joomla.org>
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\Component\Modules\Administrator\Helper;

\defined('_JEXEC') or die;

use Joomla\CMS\Factory;
use Joomla\CMS\HTML\HTMLHelper;
use Joomla\CMS\Language\Text;
use Joomla\Database\ParameterType;
use Joomla\Utilities\ArrayHelper;

/**
 * Modules component helper.
 *
 * @since  1.6
 */
abstract class ModulesHelper
{
	/**
	 * Get a list of filter options for the state of a module.
	 *
	 * @return  array  An array of \JHtmlOption elements.
	 */
	public static function getStateOptions()
	{
		// Build the filter options.
		$options   = array();
		$options[] = HTMLHelper::_('select.option', '1', Text::_('JPUBLISHED'));
		$options[] = HTMLHelper::_('select.option', '0', Text::_('JUNPUBLISHED'));
		$options[] = HTMLHelper::_('select.option', '-2', Text::_('JTRASHED'));
		$options[] = HTMLHelper::_('select.option', '*', Text::_('JALL'));

return $options;
	}

/**
	 * Get a list of filter options for the application clients.
	 *
	 * @return  array  An array of \JHtmlOption elements.
	 */
	public static function getClientOptions()
	{
		// Build the filter options.
		$options   = array();
		$options[] = HTMLHelper::_('select.option', '0', Text::_('JSITE'));
		$options[] = HTMLHelper::_('select.option', '1', Text::_('JADMINISTRATOR'));

return $options;
	}

/**
	 * Get a list of modules positions
	 *
	 * @param   integer  $clientId       Client ID
	 * @param   boolean  $editPositions  Allow to edit the positions
	 *
	 * @return  array  A list of positions
	 */
	public static function getPositions($clientId, $editPositions = false)
	{
		$db       = Factory::getDbo();
		$clientId = (int) $clientId;
		$query    = $db->getQuery(true)
			->select('DISTINCT ' . $db->quoteName('position'))
			->from($db->quoteName('#__modules'))
			->where($db->quoteName('client_id') . ' = :clientid')
			->order($db->quoteName('position'))
			->bind(':clientid', $clientId, ParameterType::INTEGER);

$db->setQuery($query);

try
		{
			$positions = $db->loadColumn();
			$positions = is_array($positions) ? $positions : array();
		}
		catch (\RuntimeException $e)
		{
			Factory::getApplication()->enqueueMessage($e->getMessage(), 'error');

return;
		}

// Build the list
		$options = array();

foreach ($positions as $position)
		{
			if (!$position && !$editPositions)
			{
				$options[] = HTMLHelper::_('select.option', 'none', Text::_('COM_MODULES_NONE'));
			}
			elseif (!$position)
			{
				$options[] = HTMLHelper::_('select.option', '', Text::_('COM_MODULES_NONE'));
			}
			else
			{
				$options[] = HTMLHelper::_('select.option', $position, $position);
			}
		}

return $options;
	}

/**
	 * Return a list of templates
	 *
	 * @param   integer  $clientId  Client ID
	 * @param   string   $state     State
	 * @param   string   $template  Template name
	 *
	 * @return  array  List of templates
	 */
	public static function getTemplates($clientId = 0, $state = '', $template = '')
	{
		$db       = Factory::getDbo();
		$clientId = (int) $clientId;

// Get the database object and a new query object.
		$query = $db->getQuery(true);

// Build the query.
		$query->select($db->quoteName(['element', 'name', 'enabled']))
			->from($db->quoteName('#__extensions'))
			->where($db->quoteName('client_id') . ' = :clientid')
			->where($db->quoteName('type') . ' = ' . $db->quote('template'));

if ($state != '')
		{
			$query->where($db->quoteName('enabled') . ' = :state')
				->bind(':state', $state);
		}

if ($template != '')
		{
			$query->where($db->quoteName('element') . ' = :element')
				->bind(':element', $template);
		}

$query->bind(':clientid', $clientId, ParameterType::INTEGER);

// Set the query and load the templates.
		$db->setQuery($query);
		$templates = $db->loadObjectList('element');

return $templates;
	}

/**
	 * Get a list of the unique modules installed in the client application.
	 *
	 * @param   int  $clientId  The client id.
	 *
	 * @return  array  Array of unique modules
	 */
	public static function getModules($clientId)
	{
		$db    = Factory::getDbo();
		$query = $db->getQuery(true)
			->select('element AS value, name AS text')
			->from('#__extensions as e')
			->where('e.client_id = ' . (int) $clientId)
			->where('type = ' . $db->quote('module'))
			->join('LEFT', '#__modules as m ON m.module=e.element AND m.client_id=e.client_id')
			->where('m.module IS NOT NULL')
			->group('element,name');

$db->setQuery($query);
		$modules = $db->loadObjectList();
		$lang = Factory::getLanguage();

foreach ($modules as $i => $module)
		{
			$extension = $module->value;
			$path = $clientId ? JPATH_ADMINISTRATOR : JPATH_SITE;
			$source = $path . "/modules/$extension";
				$lang->load("$extension.sys", $path)
			||	$lang->load("$extension.sys", $source);
			$modules[$i]->text = Text::_($module->text);
		}

$modules = ArrayHelper::sortObjects($modules, 'text', 1, true, true);

return $modules;
	}

/**
	 * Get a list of the assignment options for modules to menus.
	 *
	 * @param   int  $clientId  The client id.
	 *
	 * @return  array
	 */
	public static function getAssignmentOptions($clientId)
	{
		$options = array();
		$options[] = HTMLHelper::_('select.option', '0', 'COM_MODULES_OPTION_MENU_ALL');
		$options[] = HTMLHelper::_('select.option', '-', 'COM_MODULES_OPTION_MENU_NONE');

if ($clientId == 0)
		{
			$options[] = HTMLHelper::_('select.option', '1', 'COM_MODULES_OPTION_MENU_INCLUDE');
			$options[] = HTMLHelper::_('select.option', '-1', 'COM_MODULES_OPTION_MENU_EXCLUDE');
		}

return $options;
	}

/**
	 * Return a translated module position name
	 *
	 * @param   integer  $clientId  Application client id 0: site | 1: admin
	 * @param   string   $template  Template name
	 * @param   string   $position  Position name
	 *
	 * @return  string  Return a translated position name
	 *
	 * @since   3.0
	 */
	public static function getTranslatedModulePosition($clientId, $template, $position)
	{
		// Template translation
		$lang = Factory::getLanguage();
		$path = $clientId ? JPATH_ADMINISTRATOR : JPATH_SITE;

$loaded = $lang->getPaths('tpl_' . $template . '.sys');

// Only load the template's language file if it hasn't been already
		if (!$loaded)
		{
			$lang->load('tpl_' . $template . '.sys', $path, null, false, false)
			||	$lang->load('tpl_' . $template . '.sys', $path . '/templates/' . $template, null, false, false)
			||	$lang->load('tpl_' . $template . '.sys', $path, $lang->getDefault(), false, false)
			||	$lang->load('tpl_' . $template . '.sys', $path . '/templates/' . $template, $lang->getDefault(), false, false);
		}

$langKey = strtoupper('TPL_' . $template . '_POSITION_' . $position);
		$text = Text::_($langKey);

// Avoid untranslated strings
		if (!self::isTranslatedText($langKey, $text))
		{
			// Modules component translation
			$langKey = strtoupper('COM_MODULES_POSITION_' . $position);
			$text = Text::_($langKey);

// Avoid untranslated strings
			if (!self::isTranslatedText($langKey, $text))
			{
				// Try to humanize the position name
				$text = ucfirst(preg_replace('/^' . $template . '\-/', '', $position));
				$text = ucwords(str_replace(array('-', '_'), ' ', $text));
			}
		}

return $text;
	}

/**
	 * Check if the string was translated
	 *
	 * @param   string  $langKey  Language file text key
	 * @param   string  $text     The "translated" text to be checked
	 *
	 * @return  boolean  Return true for translated text
	 *
	 * @since   3.0
	 */
	public static function isTranslatedText($langKey, $text)
	{
		return $text !== $langKey;
	}

/**
	 * Create and return a new Option
	 *
	 * @param   string  $value  The option value [optional]
	 * @param   string  $text   The option text [optional]
	 *
	 * @return  object  The option as an object (\stdClass instance)
	 *
	 * @since   3.0
	 */
	public static function createOption($value = '', $text = '')
	{
		if (empty($text))
		{
			$text = $value;
		}

$option = new \stdClass;
		$option->value = $value;
		$option->text  = $text;

return $option;
	}

/**
	 * Create and return a new Option Group
	 *
	 * @param   string  $label    Value and label for group [optional]
	 * @param   array   $options  Array of options to insert into group [optional]
	 *
	 * @return  array  Return the new group as an array
	 *
	 * @since   3.0
	 */
	public static function createOptionGroup($label = '', $options = array())
	{
		$group = array();
		$group['value'] = $label;
		$group['text']  = $label;
		$group['items'] = $options;

return $group;
	}
}