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<?php
/**
 * @package     Joomla.Administrator
 * @subpackage  com_workflow
 *
 * @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\Workflow\Administrator\Table;

\defined('_JEXEC') or die;

use Joomla\CMS\Access\Rules;
use Joomla\CMS\Factory;
use Joomla\CMS\Language\Text;
use Joomla\CMS\Table\Table;
use Joomla\Database\DatabaseDriver;
use Joomla\Database\ParameterType;

/**
 * Stage table
 *
 * @since  4.0.0
 */
class StageTable extends Table
{
	/**
	 * Indicates that columns fully support the NULL value in the database
	 *
	 * @var    boolean
	 * @since  4.0.0
	 */
	protected $_supportNullValue = true;

/**
	 * Constructor
	 *
	 * @param   \JDatabaseDriver  $db  Database connector object
	 *
	 * @since  4.0.0
	 */
	public function __construct(DatabaseDriver $db)
	{
		parent::__construct('#__workflow_stages', 'id', $db);
	}

/**
	 * Deletes workflow with transition and stages.
	 *
	 * @param   int  $pk  Extension ids to delete.
	 *
	 * @return  boolean  True on success.
	 *
	 * @since  4.0.0
	 *
	 * @throws  \UnexpectedValueException
	 */
	public function delete($pk = null)
	{
		$db  = $this->getDbo();
		$app = Factory::getApplication();
		$pk  = (int) $pk;

$query = $db->getQuery(true)
			->select($db->quoteName('default'))
			->from($db->quoteName('#__workflow_stages'))
			->where($db->quoteName('id') . ' = :id')
			->bind(':id', $pk, ParameterType::INTEGER);

$isDefault = $db->setQuery($query)->loadResult();

if ($isDefault)
		{
			$app->enqueueMessage(Text::_('COM_WORKFLOW_MSG_DELETE_IS_DEFAULT'), 'error');

return false;
		}

try
		{
			$query = $db->getQuery(true)
				->delete($db->quoteName('#__workflow_transitions'))
				->where(
					[
						$db->quoteName('to_stage_id') . ' = :idTo',
						$db->quoteName('from_stage_id') . ' = :idFrom',
					],
					'OR'
				)
				->bind([':idTo', ':idFrom'], $pk, ParameterType::INTEGER);

$db->setQuery($query)->execute();

return parent::delete($pk);
		}
		catch (\RuntimeException $e)
		{
			$app->enqueueMessage(Text::sprintf('COM_WORKFLOW_MSG_WORKFLOWS_DELETE_ERROR', $e->getMessage()), 'error');
		}

return false;
	}

/**
	 * Overloaded check function
	 *
	 * @return  boolean  True on success
	 *
	 * @see     Table::check()
	 * @since   4.0.0
	 */
	public function check()
	{
		try
		{
			parent::check();
		}
		catch (\Exception $e)
		{
			$this->setError($e->getMessage());

return false;
		}

if (trim($this->title) === '')
		{
			$this->setError(Text::_('JLIB_DATABASE_ERROR_MUSTCONTAIN_A_TITLE_STATE'));

return false;
		}

if (!empty($this->default))
		{
			if ((int) $this->published !== 1)
			{
				$this->setError(Text::_('COM_WORKFLOW_ITEM_MUST_PUBLISHED'));

return false;
			}
		}
		else
		{
			$db = $this->getDbo();
			$query = $db->getQuery(true);

$query
				->select($db->quoteName('id'))
				->from($db->quoteName('#__workflow_stages'))
				->where(
					[
						$db->quoteName('workflow_id') . ' = :id',
						$db->quoteName('default') . ' = 1',
					]
				)
				->bind(':id', $this->workflow_id, ParameterType::INTEGER);

$id = $db->setQuery($query)->loadResult();

// If there is no default stage => set the current to default to recover
			if (empty($id))
			{
				$this->default = '1';
			}
			// This stage is the default, but someone has tried to disable it => not allowed
			elseif ($id === $this->id)
			{
				$this->setError(Text::_('COM_WORKFLOW_DISABLE_DEFAULT'));

return false;
			}
		}

return true;
	}

/**
	 * Overloaded store function
	 *
	 * @param   boolean  $updateNulls  True to update fields even if they are null.
	 *
	 * @return  mixed  False on failure, positive integer on success.
	 *
	 * @see     Table::store()
	 * @since   4.0.0
	 */
	public function store($updateNulls = true)
	{
		$table = new StageTable($this->getDbo());

if ($this->default == '1')
		{
			// Verify that the default is unique for this workflow
			if ($table->load(array('default' => '1', 'workflow_id' => (int) $this->workflow_id)))
			{
				$table->default = 0;
				$table->store();
			}
		}

return parent::store($updateNulls);
	}

/**
	 * Method to bind an associative array or object to the Table instance.
	 * This method only binds properties that are publicly accessible and optionally
	 * takes an array of properties to ignore when binding.
	 *
	 * @param   array|object  $src     An associative array or object to bind to the Table instance.
	 * @param   array|string  $ignore  An optional array or space separated list of properties to ignore while binding.
	 *
	 * @return  boolean  True on success.
	 *
	 * @since   4.0.0
	 * @throws  \InvalidArgumentException
	 */
	public function bind($src, $ignore = array())
	{
		// Bind the rules.
		if (isset($src['rules']) && \is_array($src['rules']))
		{
			$rules = new Rules($src['rules']);
			$this->setRules($rules);
		}

return parent::bind($src, $ignore);
	}

/**
	 * Method to compute the default name of the asset.
	 * The default name is in the form table_name.id
	 * where id is the value of the primary key of the table.
	 *
	 * @return  string
	 *
	 * @since  4.0.0
	 */
	protected function _getAssetName()
	{
		$k = $this->_tbl_key;
		$workflow = new WorkflowTable($this->getDbo());
		$workflow->load($this->workflow_id);

$parts = explode('.', $workflow->extension);

$extension = array_shift($parts);

return $extension . '.stage.' . (int) $this->$k;
	}

/**
	 * Method to return the title to use for the asset table.
	 *
	 * @return  string
	 *
	 * @since  4.0.0
	 */
	protected function _getAssetTitle()
	{
		return $this->title;
	}

/**
	 * Get the parent asset id for the record
	 *
	 * @param   Table    $table  A JTable object for the asset parent.
	 * @param   integer  $id     The id for the asset
	 *
	 * @return  integer  The id of the asset's parent
	 *
	 * @since  4.0.0
	 */
	protected function _getAssetParentId(Table $table = null, $id = null)
	{
		$asset = self::getInstance('Asset', 'JTable', array('dbo' => $this->getDbo()));

$workflow = new WorkflowTable($this->getDbo());
		$workflow->load($this->workflow_id);

$parts = explode('.', $workflow->extension);

$extension = array_shift($parts);

$name = $extension . '.workflow.' . (int) $workflow->id;

$asset->loadByName($name);
		$assetId = $asset->id;

return !empty($assetId) ? $assetId : parent::_getAssetParentId($table, $id);
	}
}