<?php
/**
 * Joomla! Content Management System
 *
 * @copyright  Copyright (C) 2005 - 2019 Open Source Matters, Inc. All rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\CMS\UCM;

defined('JPATH_PLATFORM') or die;

use Joomla\CMS\Application\BaseApplication;

/**
 * UCM Class for handling content types
 *
 * @property-read  string  $core_content_id
 * @property-read  string  $core_type_alias
 * @property-read  string  $core_title
 * @property-read  string  $core_alias
 * @property-read  string  $core_body
 * @property-read  string  $core_state
 *
 * @property-read  string  $core_checked_out_time
 * @property-read  string  $core_checked_out_user_id
 * @property-read  string  $core_access
 * @property-read  string  $core_params
 * @property-read  string  $core_featured
 * @property-read  string  $core_metadata
 * @property-read  string  $core_created_user_id
 * @property-read  string  $core_created_by_alias
 * @property-read  string  $core_created_time
 * @property-read  string  $core_modified_user_id
 * @property-read  string  $core_modified_time
 * @property-read  string  $core_language
 * @property-read  string  $core_publish_up
 * @property-read  string  $core_publish_down
 * @property-read  string  $core_content_item_id
 * @property-read  string  $asset_id
 * @property-read  string  $core_images
 * @property-read  string  $core_urls
 * @property-read  string  $core_hits
 * @property-read  string  $core_version
 * @property-read  string  $core_ordering
 * @property-read  string  $core_metakey
 * @property-read  string  $core_metadesc
 * @property-read  string  $core_catid
 * @property-read  string  $core_xreference
 * @property-read  string  $core_typeid
 *
 * @since  3.1
 */
class UCMType implements UCM
{
	/**
	 * The UCM Type
	 *
	 * @var    UCMType
	 * @since  3.1
	 */
	public $type;

	/**
	 * The Database object
	 *
	 * @var    \JDatabaseDriver
	 * @since  3.1
	 */
	protected $db;

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

	/**
	 * Class constructor
	 *
	 * @param   string            $alias        The alias for the item
	 * @param   \JDatabaseDriver  $database     The database object
	 * @param   BaseApplication   $application  The application object
	 *
	 * @since   3.1
	 */
	public function __construct($alias = null, \JDatabaseDriver $database = null, BaseApplication $application = null)
	{
		$this->db = $database ?: \JFactory::getDbo();
		$app      = $application ?: \JFactory::getApplication();

		// Make the best guess we can in the absence of information.
		$this->alias = $alias ?: $app->input->get('option') . '.' . $app->input->get('view');
		$this->type  = $this->getTypeByAlias($this->alias);
	}

	/**
	 * Get the Content Type
	 *
	 * @param   integer  $pk  The primary key of the alias type
	 *
	 * @return  object  The UCM Type data
	 *
	 * @since   3.1
	 */
	public function getType($pk = null)
	{
		if (!$pk)
		{
			return $this->getTypeByAlias($this->alias);
		}

		$query = $this->db->getQuery(true);
		$query->select('ct.*');
		$query->from($this->db->quoteName('#__content_types', 'ct'));

		$query->where($this->db->quoteName('ct.type_id') . ' = ' . (int) $pk);
		$this->db->setQuery($query);

		return $this->db->loadObject();
	}

	/**
	 * Get the Content Type from the alias
	 *
	 * @param   string  $typeAlias  The alias for the type
	 *
	 * @return  object  The UCM Type data
	 *
	 * @since   3.2
	 */
	public function getTypeByAlias($typeAlias = null)
	{
		$query = $this->db->getQuery(true);
		$query->select('ct.*');
		$query->from($this->db->quoteName('#__content_types', 'ct'));
		$query->where($this->db->quoteName('ct.type_alias') . ' = ' . $this->db->quote($typeAlias));

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

		return $this->db->loadObject();
	}

	/**
	 * Get the Content Type from the table class name
	 *
	 * @param   string  $tableName  The table for the type
	 *
	 * @return  mixed  The UCM Type data if found, false if no match is found
	 *
	 * @since   3.2
	 */
	public function getTypeByTable($tableName)
	{
		$query = $this->db->getQuery(true);
		$query->select('ct.*');
		$query->from($this->db->quoteName('#__content_types', 'ct'));

		// $query->where($this->db->quoteName('ct.type_alias') . ' = ' . (int) $typeAlias);
		$this->db->setQuery($query);

		$types = $this->db->loadObjectList();

		foreach ($types as $type)
		{
			$tableFromType = json_decode($type->table);
			$tableNameFromType = $tableFromType->special->prefix . $tableFromType->special->type;

			if ($tableNameFromType === $tableName)
			{
				return $type;
			}
		}

		return false;
	}

	/**
	 * Retrieves the UCM type ID
	 *
	 * @param   string  $alias  The string of the type alias
	 *
	 * @return  mixed  The ID of the requested type or false if type is not found
	 *
	 * @since   3.1
	 */
	public function getTypeId($alias = null)
	{
		if (!$alias)
		{
			$alias = $this->alias;
		}

		$query = $this->db->getQuery(true);
		$query->select('ct.type_id');
		$query->from($this->db->quoteName('#__content_types', 'ct'));
		$query->where($this->db->quoteName('ct.type_alias') . ' = ' . $this->db->q($alias));

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

		$id = $this->db->loadResult();

		if (!$id)
		{
			return false;
		}

		return $id;
	}

	/**
	 * Method to expand the field mapping
	 *
	 * @param   boolean  $assoc  True to return an associative array.
	 *
	 * @return  mixed  Array or object with field mappings. Defaults to object.
	 *
	 * @since   3.2
	 */
	public function fieldmapExpand($assoc = false)
	{
		if (!empty($this->type->field_mappings))
		{
			return $this->fieldmap = json_decode($this->type->field_mappings, $assoc);
		}
		else
		{
			return false;
		}
	}

	/**
	 * Magic method to get the name of the field mapped to a ucm field (core_something).
	 *
	 * @param   string  $ucmField  The name of the field in JTableCorecontent
	 *
	 * @return  string  The name mapped to the $ucmField for a given content type
	 *
	 * @since   3.2
	 */
	public function __get($ucmField)
	{
		if (!isset($this->fieldmap))
		{
			$this->fieldmapExpand(false);
		}

		return isset($this->fieldmap->common->$ucmField) ? $this->fieldmap->common->$ucmField : null;
	}
}