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<?php
/**
 * Joomla! Content Management System
 *
 * @copyright  (C) 2013 Open Source Matters, Inc. <https://www.joomla.org>
 * @license    GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\CMS\UCM;

\defined('JPATH_PLATFORM') or die;

use Joomla\CMS\Factory;
use Joomla\CMS\Helper\ContentHelper;
use Joomla\CMS\Table\Table;
use Joomla\CMS\Table\TableInterface;
use Joomla\Database\ParameterType;

/**
 * Base class for implementing UCM
 *
 * @since  3.1
 */
class UCMContent extends UCMBase
{
	/**
	 * The related table object
	 *
	 * @var    Table
	 * @since  3.1
	 */
	protected $table;

	/**
	 * The UCM data array
	 *
	 * @var    array
	 * @since  3.1
	 */
	public $ucmData;

	/**
	 * Instantiate UCMContent.
	 *
	 * @param   TableInterface  $table  The table object
	 * @param   string          $alias  The type alias
	 * @param   UCMType         $type   The type object
	 *
	 * @since   3.1
	 */
	public function __construct(TableInterface $table = null, $alias = null, UCMType $type = null)
	{
		parent::__construct($alias, $type);

		if ($table)
		{
			$this->table = $table;
		}
		else
		{
			$tableObject = json_decode($this->type->type->table);
			$this->table = Table::getInstance($tableObject->special->type, $tableObject->special->prefix, $tableObject->special->config);
		}
	}

	/**
	 * Method to save the data
	 *
	 * @param   array    $original  The original data to be saved
	 * @param   UCMType  $type      The UCM Type object
	 *
	 * @return  boolean  true
	 *
	 * @since   3.1
	 */
	public function save($original = null, UCMType $type = null)
	{
		$type    = $type ?: $this->type;
		$ucmData = $original ? $this->mapData($original, $type) : $this->ucmData;

		// Store the Common fields
		$this->store($ucmData['common']);

		// Store the special fields
		if (isset($ucmData['special']))
		{
			$table = $this->table;
			$this->store($ucmData['special'], $table, '');
		}

		return true;
	}

	/**
	 * Delete content from the Core Content table
	 *
	 * @param   mixed    $pk    Array or comma-separated string of ids to delete
	 * @param   UCMType  $type  The content type object
	 *
	 * @return  boolean  True if success
	 *
	 * @since   3.1
	 */
	public function delete($pk, UCMType $type = null)
	{
		$db   = Factory::getDbo();
		$type = $type ?: $this->type;

		if (!\is_array($pk))
		{
			$pk = explode(',', $pk);
		}

		$query = $db->getQuery(true)
			->delete($db->quoteName('#__ucm_content'))
			->where($db->quoteName('core_type_id') . ' = :typeId')
			->whereIn($db->quoteName('core_content_item_id'), $pk)
			->bind(':typeId', $type->type_id, ParameterType::INTEGER);

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

		return true;
	}

	/**
	 * Map the original content to the Core Content fields
	 *
	 * @param   array    $original  The original data array
	 * @param   UCMType  $type      Type object for this data
	 *
	 * @return  array  $ucmData  The mapped UCM data
	 *
	 * @since   3.1
	 */
	public function mapData($original, UCMType $type = null)
	{
		$contentType = $type ?: $this->type;

		$fields = json_decode($contentType->type->field_mappings);

		$ucmData = array();

		$common = \is_object($fields->common) ? $fields->common : $fields->common[0];

		foreach ($common as $i => $field)
		{
			if ($field && $field !== 'null' && \array_key_exists($field, $original))
			{
				$ucmData['common'][$i] = $original[$field];
			}
		}

		if (\array_key_exists('special', $ucmData))
		{
			$special = \is_object($fields->special) ? $fields->special : $fields->special[0];

			foreach ($special as $i => $field)
			{
				if ($field && $field !== 'null' && \array_key_exists($field, $original))
				{
					$ucmData['special'][$i] = $original[$field];
				}
			}
		}

		$ucmData['common']['core_type_alias'] = $contentType->type->type_alias;
		$ucmData['common']['core_type_id']    = $contentType->type->type_id;

		if (isset($ucmData['special']))
		{
			$ucmData['special']['ucm_id'] = $ucmData['common']['ucm_id'];
		}

		$this->ucmData = $ucmData;

		return $this->ucmData;
	}

	/**
	 * Store data to the appropriate table
	 *
	 * @param   array           $data        Data to be stored
	 * @param   TableInterface  $table       JTable Object
	 * @param   boolean         $primaryKey  Flag that is true for data that are using #__ucm_content as their primary table
	 *
	 * @return  boolean  true on success
	 *
	 * @since   3.1
	 */
	protected function store($data, TableInterface $table = null, $primaryKey = null)
	{
		$table = $table ?: Table::getInstance('Corecontent');

		$typeId     = $this->getType()->type->type_id;
		$primaryKey = $primaryKey ?: $this->getPrimaryKey($typeId, $data['core_content_item_id']);

		if (!$primaryKey)
		{
			// Store the core UCM mappings
			$baseData = array();
			$baseData['ucm_type_id']     = $typeId;
			$baseData['ucm_item_id']     = $data['core_content_item_id'];
			$baseData['ucm_language_id'] = ContentHelper::getLanguageId($data['core_language']);

			if (parent::store($baseData))
			{
				$primaryKey = $this->getPrimaryKey($typeId, $data['core_content_item_id']);
			}
		}

		return parent::store($data, $table, $primaryKey);
	}

	/**
	 * Get the value of the primary key from #__ucm_base
	 *
	 * @param   integer  $typeId         The ID for the type
	 * @param   integer  $contentItemId  Value of the primary key in the legacy or secondary table
	 *
	 * @return  integer  The integer of the primary key
	 *
	 * @since   3.1
	 */
	public function getPrimaryKey($typeId, $contentItemId)
	{
		$db = Factory::getDbo();
		$query = $db->getQuery(true)
			->select($db->quoteName('ucm_id'))
			->from($db->quoteName('#__ucm_base'))
			->where(
				[
					$db->quoteName('ucm_item_id') . ' = :itemId',
					$db->quoteName('ucm_type_id') . ' = :typeId',
				]
			)
			->bind(':itemId', $contentItemId, ParameterType::INTEGER)
			->bind(':typeId', $typeId, ParameterType::INTEGER);
		$db->setQuery($query);

		return $db->loadResult();
	}
}