<?php
/**
 * Joomla! Content Management System
 *
 * @copyright  Copyright (C) 2005 - 2017 Open Source Matters, Inc. All rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\CMS\Table;

defined('JPATH_PLATFORM') or die;

use Joomla\CMS\Access\Rules;
use Joomla\CMS\Application\ApplicationHelper;
use Joomla\CMS\Table\Observer\ContentHistory;
use Joomla\CMS\Table\Observer\Tags;
use Joomla\Registry\Registry;

/**
 * Category table
 *
 * @since  1.5
 */
class Category extends Nested
{
	/**
	 * Constructor
	 *
	 * @param   \JDatabaseDriver  $db  Database driver object.
	 *
	 * @since   1.5
	 */
	public function __construct(\JDatabaseDriver $db)
	{
		parent::__construct('#__categories', 'id', $db);

		Tags::createObserver($this, array('typeAlias' => '{extension}.category'));
		ContentHistory::createObserver($this, array('typeAlias' => '{extension}.category'));

		$this->access = (int) \JFactory::getConfig()->get('access');
	}

	/**
	 * 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   1.6
	 */
	protected function _getAssetName()
	{
		$k = $this->_tbl_key;

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

	/**
	 * Method to return the title to use for the asset table.
	 *
	 * @return  string
	 *
	 * @since   1.6
	 */
	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   1.6
	 */
	protected function _getAssetParentId(Table $table = null, $id = null)
	{
		$assetId = null;

		// This is a category under a category.
		if ($this->parent_id > 1)
		{
			// Build the query to get the asset id for the parent category.
			$query = $this->_db->getQuery(true)
				->select($this->_db->quoteName('asset_id'))
				->from($this->_db->quoteName('#__categories'))
				->where($this->_db->quoteName('id') . ' = ' . $this->parent_id);

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

			if ($result = $this->_db->loadResult())
			{
				$assetId = (int) $result;
			}
		}
		// This is a category that needs to parent with the extension.
		elseif ($assetId === null)
		{
			// Build the query to get the asset id for the parent category.
			$query = $this->_db->getQuery(true)
				->select($this->_db->quoteName('id'))
				->from($this->_db->quoteName('#__assets'))
				->where($this->_db->quoteName('name') . ' = ' . $this->_db->quote($this->extension));

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

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

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

	/**
	 * Override check function
	 *
	 * @return  boolean
	 *
	 * @see     Table::check()
	 * @since   1.5
	 */
	public function check()
	{
		// Check for a title.
		if (trim($this->title) == '')
		{
			$this->setError(\JText::_('JLIB_DATABASE_ERROR_MUSTCONTAIN_A_TITLE_CATEGORY'));

			return false;
		}

		$this->alias = trim($this->alias);

		if (empty($this->alias))
		{
			$this->alias = $this->title;
		}

		$this->alias = ApplicationHelper::stringURLSafe($this->alias, $this->language);

		if (trim(str_replace('-', '', $this->alias)) == '')
		{
			$this->alias = \JFactory::getDate()->format('Y-m-d-H-i-s');
		}

		return true;
	}

	/**
	 * Overloaded bind function.
	 *
	 * @param   array   $array   named array
	 * @param   string  $ignore  An optional array or space separated list of properties
	 *                           to ignore while binding.
	 *
	 * @return  mixed   Null if operation was satisfactory, otherwise returns an error
	 *
	 * @see     Table::bind()
	 * @since   1.6
	 */
	public function bind($array, $ignore = '')
	{
		if (isset($array['params']) && is_array($array['params']))
		{
			$registry = new Registry($array['params']);
			$array['params'] = (string) $registry;
		}

		if (isset($array['metadata']) && is_array($array['metadata']))
		{
			$registry = new Registry($array['metadata']);
			$array['metadata'] = (string) $registry;
		}

		// Bind the rules.
		if (isset($array['rules']) && is_array($array['rules']))
		{
			$rules = new Rules($array['rules']);
			$this->setRules($rules);
		}

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

	/**
	 * Overridden Table::store to set created/modified and user id.
	 *
	 * @param   boolean  $updateNulls  True to update fields even if they are null.
	 *
	 * @return  boolean  True on success.
	 *
	 * @since   1.6
	 */
	public function store($updateNulls = false)
	{
		$date = \JFactory::getDate();
		$user = \JFactory::getUser();

		$this->modified_time = $date->toSql();

		if ($this->id)
		{
			// Existing category
			$this->modified_user_id = $user->get('id');
		}
		else
		{
			// New category. A category created_time and created_user_id field can be set by the user,
			// so we don't touch either of these if they are set.
			if (!(int) $this->created_time)
			{
				$this->created_time = $date->toSql();
			}

			if (empty($this->created_user_id))
			{
				$this->created_user_id = $user->get('id');
			}
		}

		// Verify that the alias is unique
		$table = Table::getInstance('Category', 'JTable', array('dbo' => $this->getDbo()));

		if ($table->load(array('alias' => $this->alias, 'parent_id' => (int) $this->parent_id, 'extension' => $this->extension))
			&& ($table->id != $this->id || $this->id == 0))
		{
			$this->setError(\JText::_('JLIB_DATABASE_ERROR_CATEGORY_UNIQUE_ALIAS'));

			return false;
		}

		return parent::store($updateNulls);
	}
}
