<?php
/**
 * Joomla! Content Management System
 *
 * @copyright  (C) 2012 Open Source Matters, Inc. <https://www.joomla.org>
 * @license    GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\CMS\Form\Field;

\defined('JPATH_PLATFORM') or die;

use Joomla\CMS\Application\ApplicationHelper;
use Joomla\CMS\Factory;
use Joomla\CMS\Filesystem\Folder;
use Joomla\CMS\Form\Form;
use Joomla\CMS\HTML\HTMLHelper;
use Joomla\CMS\Language\Text;
use Joomla\Database\ParameterType;

/**
 * Chrome Styles field.
 *
 * @since  3.0
 */
class ChromestyleField extends GroupedlistField
{
	/**
	 * The form field type.
	 *
	 * @var    string
	 * @since  3.0
	 */
	public $type = 'ChromeStyle';

	/**
	 * The client ID.
	 *
	 * @var    integer
	 * @since  3.2
	 */
	protected $clientId;

	/**
	 * Method to get certain otherwise inaccessible properties from the form field object.
	 *
	 * @param   string  $name  The property name for which to get the value.
	 *
	 * @return  mixed  The property value or null.
	 *
	 * @since   3.2
	 */
	public function __get($name)
	{
		if ($name === 'clientId')
		{
			return $this->clientId;
		}

		return parent::__get($name);
	}

	/**
	 * Method to set certain otherwise inaccessible properties of the form field object.
	 *
	 * @param   string  $name   The property name for which to get the value.
	 * @param   mixed   $value  The value of the property.
	 *
	 * @return  void
	 *
	 * @since   3.2
	 */
	public function __set($name, $value)
	{
		switch ($name)
		{
			case 'clientId':
				$this->clientId = (int) $value;
				break;

			default:
				parent::__set($name, $value);
		}
	}

	/**
	 * Method to attach a Form object to the field.
	 *
	 * @param   \SimpleXMLElement  $element  The SimpleXMLElement object representing the `<field>` tag for the form field object.
	 * @param   mixed              $value    The form field value to validate.
	 * @param   string             $group    The field name group control value. This acts as an array container for the field.
	 *                                       For example if the field has name="foo" and the group value is set to "bar" then the
	 *                                       full field name would end up being "bar[foo]".
	 *
	 * @return  boolean  True on success.
	 *
	 * @see     FormField::setup()
	 * @since   3.2
	 */
	public function setup(\SimpleXMLElement $element, $value, $group = null)
	{
		$result = parent::setup($element, $value, $group);

		if ($result === true)
		{
			// Get the client id.
			$clientId = $this->element['client_id'];

			if (!isset($clientId))
			{
				$clientName = $this->element['client'];

				if (isset($clientName))
				{
					$client = ApplicationHelper::getClientInfo($clientName, true);
					$clientId = $client->id;
				}
			}

			if (!isset($clientId) && $this->form instanceof Form)
			{
				$clientId = $this->form->getValue('client_id');
			}

			$this->clientId = (int) $clientId;
		}

		return $result;
	}


	/**
	 * Method to get the list of template chrome style options
	 * grouped by template.
	 *
	 * @return  array  The field option objects as a nested array in groups.
	 *
	 * @since   3.0
	 */
	protected function getGroups()
	{
		$groups = array();

		// Add Module Style Field
		$tmp = '---' . Text::_('JLIB_FORM_VALUE_FROM_TEMPLATE') . '---';
		$groups[$tmp][] = HTMLHelper::_('select.option', '0', Text::_('JLIB_FORM_VALUE_INHERITED'));

		$templateStyles = $this->getTemplateModuleStyles();

		// Create one new option object for each available style, grouped by templates
		foreach ($templateStyles as $template => $styles)
		{
			$template = ucfirst($template);
			$groups[$template] = array();

			foreach ($styles as $style)
			{
				$tmp = HTMLHelper::_('select.option', $template . '-' . $style, $style);
				$groups[$template][] = $tmp;
			}
		}

		reset($groups);

		return $groups;
	}

	/**
	 * Method to get the templates module styles.
	 *
	 * @return  array  The array of styles, grouped by templates.
	 *
	 * @since   3.0
	 */
	protected function getTemplateModuleStyles()
	{
		$moduleStyles = array();

		// Global Layouts
		$layouts = Folder::files(JPATH_SITE . '/layouts/chromes', '.*\.php');

		foreach ($layouts as &$layout)
		{
			$layout = basename($layout, '.php');
		}

		$moduleStyles['system'] = $layouts;

		$templates = $this->getTemplates();
		$path      = JPATH_ADMINISTRATOR;

		if ($this->clientId === 0)
		{
			$path = JPATH_SITE;
		}

		foreach ($templates as $template)
		{
			$chromeLayoutPath = $path . '/templates/' . $template->element . '/html/layouts/chromes';

			if (!Folder::exists($chromeLayoutPath))
			{
				continue;
			}

			$layouts = Folder::files($chromeLayoutPath, '.*\.php');

			if ($layouts)
			{
				foreach ($layouts as &$layout)
				{
					$layout = basename($layout, '.php');
				}

				$moduleStyles[$template->element] = $layouts;
			}
		}

		return $moduleStyles;
	}

	/**
	 * Return a list of templates
	 *
	 * @return  array  List of templates
	 *
	 * @since   3.2.1
	 */
	protected function getTemplates()
	{
		$db = Factory::getDbo();

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

		// Build the query.
		$query->select(
			[
				$db->quoteName('element'),
				$db->quoteName('name'),
			]
		)
			->from($db->quoteName('#__extensions'))
			->where(
				[
					$db->quoteName('client_id') . ' = :clientId',
					$db->quoteName('type') . ' = ' . $db->quote('template'),
					$db->quoteName('enabled') . ' = 1',
				]
			)
			->bind(':clientId', $this->clientId, ParameterType::INTEGER);

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

		return $db->loadObjectList('element');
	}
}
