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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;

/**
 * Workflow table
 *
 * @since  4.0.0
 */
class WorkflowTable 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)
	{
		$this->typeAlias = '{extension}.workflow';

parent::__construct('#__workflows', 'id', $db);
	}

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

// Gets the workflow information that is going to be deleted.
		$query = $db->getQuery(true)
			->select($db->quoteName('default'))
			->from($db->quoteName('#__workflows'))
			->where($db->quoteName('id') . ' = :id')
			->bind(':id', $pk, ParameterType::INTEGER);

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

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

return false;
		}

// Delete the workflow states, then transitions from all tables.
		try
		{
			$query = $db->getQuery(true)
				->delete($db->quoteName('#__workflow_stages'))
				->where($db->quoteName('workflow_id') . ' = :id')
				->bind(':id', $pk, ParameterType::INTEGER);

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

$query = $db->getQuery(true)
				->delete($db->quoteName('#__workflow_transitions'))
				->where($db->quoteName('workflow_id') . ' = :id')
				->bind(':id', $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_WORKFLOW'));

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($db->quoteName('#__workflows'))
				->where($db->quoteName('default') . ' = 1');

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

// If there is no default workflow => set the current to default to recover
			if (empty($id))
			{
				$this->default = '1';
			}
			// This workflow is the default, but someone has tried to disable it => not allowed
			elseif ($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)
	{
		$date = Factory::getDate();
		$user = Factory::getUser();

$table = new WorkflowTable($this->getDbo());

if ($this->id)
		{
			// Existing item
			$this->modified_by = $user->id;
			$this->modified = $date->toSql();
		}
		else
		{
			$this->modified_by = 0;
		}

if (!(int) $this->created)
		{
			$this->created = $date->toSql();
		}

if (empty($this->created_by))
		{
			$this->created_by = $user->id;
		}

if (!(int) $this->modified)
		{
			$this->modified = $this->created;
		}

if (empty($this->modified_by))
		{
			$this->modified_by = $this->created_by;
		}

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

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

$extension = array_shift($parts);

return $extension . '.workflow.' . (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)
	{
		$assetId = null;

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

$extension = array_shift($parts);

// Build the query to get the asset id for the parent category.
		$query = $this->getDbo()->getQuery(true)
			->select($this->getDbo()->quoteName('id'))
			->from($this->getDbo()->quoteName('#__assets'))
			->where($this->getDbo()->quoteName('name') . ' = :extension')
			->bind(':extension', $extension);

// Get the asset id from the database.
		$this->getDbo()->setQuery($query);

if ($result = $this->getDbo()->loadResult())
		{
			$assetId = (int) $result;
		}

// Return the asset id.
		if ($assetId)
		{
			return $assetId;
		}
		else
		{
			return parent::_getAssetParentId($table, $id);
		}
	}
}