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<?php
/**
 * @package     Joomla.Administrator
 * @subpackage  com_fields
 *
 * @copyright   (C) 2016 Open Source Matters, Inc. <https://www.joomla.org>
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\Component\Fields\Administrator\Model;

\defined('_JEXEC') or die;

use Joomla\CMS\Factory;
use Joomla\CMS\Filesystem\Path;
use Joomla\CMS\Form\Form;
use Joomla\CMS\Language\Text;
use Joomla\CMS\MVC\Model\AdminModel;
use Joomla\CMS\Table\Table;
use Joomla\Component\Fields\Administrator\Helper\FieldsHelper;
use Joomla\Registry\Registry;

/**
 * Group Model
 *
 * @since  3.7.0
 */
class GroupModel extends AdminModel
{
	/**
	 * @var null|string
	 *
	 * @since   3.7.0
	 */
	public $typeAlias = null;

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

/**
	 * Method to save the form data.
	 *
	 * @param   array  $data  The form data.
	 *
	 * @return  boolean  True on success, False on error.
	 *
	 * @since   3.7.0
	 */
	public function save($data)
	{
		// Alter the title for save as copy
		$input = Factory::getApplication()->input;

// Save new group as unpublished
		if ($input->get('task') == 'save2copy')
		{
			$data['state'] = 0;
		}

return parent::save($data);
	}

/**
	 * Method to get a table object, load it if necessary.
	 *
	 * @param   string  $name     The table name. Optional.
	 * @param   string  $prefix   The class prefix. Optional.
	 * @param   array   $options  Configuration array for model. Optional.
	 *
	 * @return  Table  A JTable object
	 *
	 * @since   3.7.0
	 * @throws  \Exception
	 */
	public function getTable($name = 'Group', $prefix = 'Administrator', $options = array())
	{
		return parent::getTable($name, $prefix, $options);
	}

/**
	 * Abstract method for getting the form from the model.
	 *
	 * @param   array    $data      Data for the form.
	 * @param   boolean  $loadData  True if the form is to load its own data (default case), false if not.
	 *
	 * @return  mixed  A Form object on success, false on failure
	 *
	 * @since   3.7.0
	 */
	public function getForm($data = array(), $loadData = true)
	{
		$context = $this->getState('filter.context');
		$jinput = Factory::getApplication()->input;

if (empty($context) && isset($data['context']))
		{
			$context = $data['context'];
			$this->setState('filter.context', $context);
		}

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

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

// Modify the form based on Edit State access controls.
		if (empty($data['context']))
		{
			$data['context'] = $context;
		}

$user = Factory::getUser();

if (!$user->authorise('core.edit.state', $context . '.fieldgroup.' . $jinput->get('id')))
		{
			// Disable fields for display.
			$form->setFieldAttribute('ordering', 'disabled', 'true');
			$form->setFieldAttribute('state', '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('state', 'filter', 'unset');
		}

// Don't allow to change the created_by user if not allowed to access com_users.
		if (!$user->authorise('core.manage', 'com_users'))
		{
			$form->setFieldAttribute('created_by', 'filter', 'unset');
		}

return $form;
	}

/**
	 * Method to test whether a record can be deleted.
	 *
	 * @param   object  $record  A record object.
	 *
	 * @return  boolean  True if allowed to delete the record. Defaults to the permission for the component.
	 *
	 * @since   3.7.0
	 */
	protected function canDelete($record)
	{
		if (empty($record->id) || $record->state != -2)
		{
			return false;
		}

return Factory::getUser()->authorise('core.delete', $record->context . '.fieldgroup.' . (int) $record->id);
	}

/**
	 * Method to test whether a record can have its state changed.
	 *
	 * @param   object  $record  A record object.
	 *
	 * @return  boolean  True if allowed to change the state of the record. Defaults to the permission for the
	 *                   component.
	 *
	 * @since   3.7.0
	 */
	protected function canEditState($record)
	{
		$user = Factory::getUser();

// Check for existing fieldgroup.
		if (!empty($record->id))
		{
			return $user->authorise('core.edit.state', $record->context . '.fieldgroup.' . (int) $record->id);
		}

// Default to component settings.
		return $user->authorise('core.edit.state', $record->context);
	}

/**
	 * Auto-populate the model state.
	 *
	 * Note. Calling getState in this method will result in recursion.
	 *
	 * @return  void
	 *
	 * @since   3.7.0
	 */
	protected function populateState()
	{
		parent::populateState();

$context = Factory::getApplication()->getUserStateFromRequest('com_fields.groups.context', 'context', 'com_fields', 'CMD');
		$this->setState('filter.context', $context);
	}

/**
	 * A protected method to get a set of ordering conditions.
	 *
	 * @param   Table  $table  A Table object.
	 *
	 * @return  array  An array of conditions to add to ordering queries.
	 *
	 * @since   3.7.0
	 */
	protected function getReorderConditions($table)
	{
		return [
			$this->_db->quoteName('context') . ' = ' . $this->_db->quote($table->context),
		];
	}

/**
	 * Method to preprocess the form.
	 *
	 * @param   Form    $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
	 *
	 * @see     \Joomla\CMS\Form\FormField
	 * @since   3.7.0
	 * @throws  \Exception if there is an error in the form event.
	 */
	protected function preprocessForm(Form $form, $data, $group = 'content')
	{
		parent::preprocessForm($form, $data, $group);

$parts = FieldsHelper::extract($this->state->get('filter.context'));

// Extract the component name
		$component = $parts[0];

// Extract the optional section name
		$section = (count($parts) > 1) ? $parts[1] : null;

if ($parts)
		{
			// Set the access control rules field component value.
			$form->setFieldAttribute('rules', 'component', $component);
		}

if ($section !== null)
		{
			// Looking first in the component models/forms folder
			$path = Path::clean(JPATH_ADMINISTRATOR . '/components/' . $component . '/models/forms/fieldgroup/' . $section . '.xml');

if (file_exists($path))
			{
				$lang = Factory::getLanguage();
				$lang->load($component, JPATH_BASE);
				$lang->load($component, JPATH_BASE . '/components/' . $component);

if (!$form->loadFile($path, false))
				{
					throw new \Exception(Text::_('JERROR_LOADFILE_FAILED'));
				}
			}
		}
	}

/**
	 * Method to validate the form data.
	 *
	 * @param   Form    $form   The form to validate against.
	 * @param   array   $data   The data to validate.
	 * @param   string  $group  The name of the field group to validate.
	 *
	 * @return  array|boolean  Array of filtered data if valid, false otherwise.
	 *
	 * @see     JFormRule
	 * @see     JFilterInput
	 * @since   3.9.23
	 */
	public function validate($form, $data, $group = null)
	{
		if (!Factory::getUser()->authorise('core.admin', 'com_fields'))
		{
			if (isset($data['rules']))
			{
				unset($data['rules']);
			}
		}

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

/**
	 * Method to get the data that should be injected in the form.
	 *
	 * @return  array    The default data is an empty array.
	 *
	 * @since   3.7.0
	 */
	protected function loadFormData()
	{
		// Check the session for previously entered form data.
		$app = Factory::getApplication();
		$data = $app->getUserState('com_fields.edit.group.data', array());

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

// Pre-select some filters (Status, Language, Access) in edit form if those have been selected in Field Group Manager
			if (!$data->id)
			{
				// Check for which context the Field Group Manager is used and get selected fields
				$context = substr($app->getUserState('com_fields.groups.filter.context'), 4);
				$filters = (array) $app->getUserState('com_fields.groups.' . $context . '.filter');

$data->set(
					'state',
					$app->input->getInt('state', (!empty($filters['state']) ? $filters['state'] : null))
				);
				$data->set(
					'language',
					$app->input->getString('language', (!empty($filters['language']) ? $filters['language'] : null))
				);
				$data->set(
					'access',
					$app->input->getInt('access', (!empty($filters['access']) ? $filters['access'] : $app->get('access')))
				);
			}
		}

$this->preprocessData('com_fields.group', $data);

return $data;
	}

/**
	 * Method to get a single record.
	 *
	 * @param   integer  $pk  The id of the primary key.
	 *
	 * @return  mixed    Object on success, false on failure.
	 *
	 * @since   3.7.0
	 */
	public function getItem($pk = null)
	{
		if ($item = parent::getItem($pk))
		{
			// Prime required properties.
			if (empty($item->id))
			{
				$item->context = $this->getState('filter.context');
			}

if (property_exists($item, 'params'))
			{
				$item->params = new Registry($item->params);
			}
		}

return $item;
	}

/**
	 * Clean the cache
	 *
	 * @param   string   $group     The cache group
	 * @param   integer  $clientId  @deprecated   5.0   No longer used.
	 *
	 * @return  void
	 *
	 * @since   3.7.0
	 */
	protected function cleanCache($group = null, $clientId = 0)
	{
		$context = Factory::getApplication()->input->get('context');

parent::cleanCache($context);
	}
}