<?php
/**
 * @package     Joomla.Libraries
 * @subpackage  UCM
 *
 * @copyright   Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

defined('JPATH_BASE') or die;

/**
 * Base class for implementing UCM
 *
 * @package     Joomla.Libraries
 * @subpackage  UCM
 * @since       3.1
 */
class JUcmContent extends JUcmBase
{
	/**
	 * The related table object
	 *
	 * @var    JTable
	 * @since  3.1
	 */
	protected $table;

	/**
	 * The UCM type object
	 *
	 * @var    JUcmType
	 * @since  3.1
	 */
	public $type;

	/**
	 * The alias for the content table
	 *
	 * @var    string
	 * @since  3.1
	 */
	protected $alias;

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

	/**
	 * Instantiate JUcmContent.
	 *
	 * @param   JTable    $table  The table object
	 * @param   sring     $alias  The type alias
	 * @param   JUcmType  $type   The type object
	 *
	 * @since   3.1
	 */
	public function __construct(JTable $table = null, $alias = null, JUcmType $type = null)
	{
		// Setup dependencies.
		$input = JFactory::getApplication()->input;
		$this->alias = isset($alias) ? $alias : $input->get('option') . '.' . $input->get('view');

		$this->type = isset($type) ? $type : $this->getType();

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

	/**
	 * Method to save the data
	 *
	 * @param   array     $original  The original data to be saved
	 * @param   JUcmType  $type      The UCM Type object
	 *
	 * @return  boolean  true
	 *
	 * @since   3.1
	 */
	public function save($original = null, JUcmType $type = null)
	{
		$type    = $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    The string/array of id's to delete
	 * @param   JUcmType  $type  The content type object
	 *
	 * @return  boolean  True if success
	 *
	 * @since   3.1
	 */
	public function delete($pk, JUcmType $type = null)
	{
		$db   = JFactory::getDbo();
		$type = $type ? $type : $this->type;

		if (is_array($pk))
		{
			$pk = implode(',', $pk);
		}

		$query = $db->getQuery(true)
			->delete('#__ucm_content')
			->where($db->quoteName('core_type_id') . ' = ' . (int) $type->type_id)
			->where($db->quoteName('core_content_item_id') . ' IN (' . $pk . ')');

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

		return true;
	}

	/**
	 * Map the original content to the Core Content fields
	 *
	 * @param   array     $original  The original data array
	 * @param   JUcmType  $type      Type object for this data
	 *
	 * @return  object  $ucmData  The mapped UCM data
	 *
	 * @since   3.1
	 */
	public function mapData($original, JUcmType $type = null)
	{
		$contentType = isset($type) ? $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   JTable   $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, JTable $table = null, $primaryKey = null)
	{
		$table = $table ? $table : JTable::getInstance('Corecontent');

		$typeId     = $this->getType()->type->type_id;
		$primaryKey = $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'];
			$baseData['ucm_language_id'] = JHelperContent::getLanguageId($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   string   $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 = JFactory::getDbo();
		$queryccid = $db->getQuery(true);
		$queryccid->select($db->quoteName('ucm_id'))
			->from($db->quoteName('#__ucm_base'))
			->where(
				array(
					$db->quoteName('ucm_item_id') . ' = ' . $db->quote($contentItemId),
					$db->quoteName('ucm_type_id') . ' = ' . $db->quote($typeId)
				)
			);
		$db->setQuery($queryccid);
		$primaryKey = $db->loadResult();

		return $primaryKey;
	}
}