Component-Builder/admin/controllers/library.php

<?php
/**
 * @package    Joomla.Component.Builder
 *
 * @created    30th April, 2015
 * @author     Llewellyn van der Merwe <http://www.joomlacomponentbuilder.com>
 * @github     Joomla Component Builder <https://github.com/vdm-io/Joomla-Component-Builder>
 * @copyright  Copyright (C) 2015 Vast Development Method. All rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE.txt
 */

// No direct access to this file
defined('_JEXEC') or die('Restricted access');

use Joomla\Utilities\ArrayHelper;

/**
 * Library Controller
 */
class ComponentbuilderControllerLibrary extends JControllerForm
{
	/**
	 * Current or most recently performed task.
	 *
	 * @var    string
	 * @since  12.2
	 * @note   Replaces _task.
	 */
	protected $task;

	/**
	 * Class constructor.
	 *
	 * @param   array  $config  A named array of configuration variables.
	 *
	 * @since   1.6
	 */
	public function __construct($config = array())
	{
		$this->view_list = 'Libraries'; // safeguard for setting the return view listing to the main view.
		parent::__construct($config);
	}

        /**
	 * Method override to check if you can add a new record.
	 *
	 * @param   array  $data  An array of input data.
	 *
	 * @return  boolean
	 *
	 * @since   1.6
	 */
	protected function allowAdd($data = array())
	{
		// Get user object.
		$user = JFactory::getUser();
		// Access check.
		$access = $user->authorise('library.access', 'com_componentbuilder');
		if (!$access)
		{
			return false;
		}

		// In the absense of better information, revert to the component permissions.
		return $user->authorise('library.create', $this->option);
	}

	/**
	 * Method override to check if you can edit an existing record.
	 *
	 * @param   array   $data  An array of input data.
	 * @param   string  $key   The name of the key for the primary key.
	 *
	 * @return  boolean
	 *
	 * @since   1.6
	 */
	protected function allowEdit($data = array(), $key = 'id')
	{
		// get user object.
		$user = JFactory::getUser();
		// get record id.
		$recordId = (int) isset($data[$key]) ? $data[$key] : 0;


		// Access check.
		$access = ($user->authorise('library.access', 'com_componentbuilder.library.' . (int) $recordId) &&  $user->authorise('library.access', 'com_componentbuilder'));
		if (!$access)
		{
			return false;
		}

		if ($recordId)
		{
			// The record has been set. Check the record permissions.
			$permission = $user->authorise('library.edit', 'com_componentbuilder.library.' . (int) $recordId);
			if (!$permission)
			{
				if ($user->authorise('library.edit.own', 'com_componentbuilder.library.' . $recordId))
				{
					// Now test the owner is the user.
					$ownerId = (int) isset($data['created_by']) ? $data['created_by'] : 0;
					if (empty($ownerId))
					{
						// Need to do a lookup from the model.
						$record = $this->getModel()->getItem($recordId);

						if (empty($record))
						{
							return false;
						}
						$ownerId = $record->created_by;
					}

					// If the owner matches 'me' then allow.
					if ($ownerId == $user->id)
					{
						if ($user->authorise('library.edit.own', 'com_componentbuilder'))
						{
							return true;
						}
					}
				}
				return false;
			}
		}
		// Since there is no permission, revert to the component permissions.
		return $user->authorise('library.edit', $this->option);
	}

	/**
	 * Gets the URL arguments to append to an item redirect.
	 *
	 * @param   integer  $recordId  The primary key id for the item.
	 * @param   string   $urlVar    The name of the URL variable for the id.
	 *
	 * @return  string  The arguments to append to the redirect URL.
	 *
	 * @since   1.6
	 */
	protected function getRedirectToItemAppend($recordId = null, $urlVar = 'id')
	{
		// get the referral options (old method use return instead see parent)
		$ref = $this->input->get('ref', 0, 'string');
		$refid = $this->input->get('refid', 0, 'int');

		// get redirect info.
		$append = parent::getRedirectToItemAppend($recordId, $urlVar);

		// set the referral options
		if ($refid && $ref)
                {
			$append = '&ref=' . (string)$ref . '&refid='. (int)$refid . $append;
		}
		elseif ($ref)
		{
			$append = '&ref='. (string)$ref . $append;
		}

		return $append;
	}

	/**
	 * Method to run batch operations.
	 *
	 * @param   object  $model  The model.
	 *
	 * @return  boolean   True if successful, false otherwise and internal error is set.
	 *
	 * @since   2.5
	 */
	public function batch($model = null)
	{
		JSession::checkToken() or jexit(JText::_('JINVALID_TOKEN'));

		// Set the model
		$model = $this->getModel('Library', '', array());

		// Preset the redirect
		$this->setRedirect(JRoute::_('index.php?option=com_componentbuilder&view=libraries' . $this->getRedirectToListAppend(), false));

		return parent::batch($model);
	}

	/**
	 * Method to cancel an edit.
	 *
	 * @param   string  $key  The name of the primary key of the URL variable.
	 *
	 * @return  boolean  True if access level checks pass, false otherwise.
	 *
	 * @since   12.2
	 */
	public function cancel($key = null)
	{
		// get the referral options
		$this->ref = $this->input->get('ref', 0, 'word');
		$this->refid = $this->input->get('refid', 0, 'int');

		// Check if there is a return value
		$return = $this->input->get('return', null, 'base64');

		$cancel = parent::cancel($key);

		if (!is_null($return) && JUri::isInternal(base64_decode($return)))
		{
			$redirect = base64_decode($return);

			// Redirect to the return value.
			$this->setRedirect(
				JRoute::_(
					$redirect, false
				)
			);
		}
		elseif ($this->refid && $this->ref)
		{
			$redirect = '&view=' . (string)$this->ref . '&layout=edit&id=' . (int)$this->refid;

			// Redirect to the item screen.
			$this->setRedirect(
				JRoute::_(
					'index.php?option=' . $this->option . $redirect, false
				)
			);
		}
		elseif ($this->ref)
		{
			$redirect = '&view='.(string)$this->ref;

			// Redirect to the list screen.
			$this->setRedirect(
				JRoute::_(
					'index.php?option=' . $this->option . $redirect, false
				)
			);
		}
		return $cancel;
	}

	/**
	 * Method to save a record.
	 *
	 * @param   string  $key     The name of the primary key of the URL variable.
	 * @param   string  $urlVar  The name of the URL variable if different from the primary key (sometimes required to avoid router collisions).
	 *
	 * @return  boolean  True if successful, false otherwise.
	 *
	 * @since   12.2
	 */
	public function save($key = null, $urlVar = null)
	{
		// get the referral options
		$this->ref = $this->input->get('ref', 0, 'word');
		$this->refid = $this->input->get('refid', 0, 'int');

		// Check if there is a return value
		$return = $this->input->get('return', null, 'base64');
		$canReturn = (!is_null($return) && JUri::isInternal(base64_decode($return)));

		if ($this->ref || $this->refid || $canReturn)
		{
			// to make sure the item is checkedin on redirect
			$this->task = 'save';
		}

		$saved = parent::save($key, $urlVar);

		// This is not needed since parent save already does this
		// Due to the ref and refid implementation we need to add this
		if ($canReturn)
		{
			$redirect = base64_decode($return);

			// Redirect to the return value.
			$this->setRedirect(
				JRoute::_(
					$redirect, false
				)
			);
		}
		elseif ($this->refid && $this->ref)
		{
			$redirect = '&view=' . (string)$this->ref . '&layout=edit&id=' . (int)$this->refid;

			// Redirect to the item screen.
			$this->setRedirect(
				JRoute::_(
					'index.php?option=' . $this->option . $redirect, false
				)
			);
		}
		elseif ($this->ref)
		{
			$redirect = '&view=' . (string)$this->ref;

			// Redirect to the list screen.
			$this->setRedirect(
				JRoute::_(
					'index.php?option=' . $this->option . $redirect, false
				)
			);
		}
		return $saved;
	}

	/**
	 * Function that allows child controller access to model data
	 * after the data has been saved.
	 *
	 * @param   JModel  &$model     The data model object.
	 * @param   array   $validData  The validated data.
	 *
	 * @return  void
	 *
	 * @since   11.1
	 */
	protected function postSaveHook(JModelLegacy $model, $validData = array())
	{
		// get the state object (Joomla\CMS\Object\CMSObject)
		$state = $model->get('state');
		// if we save2copy we need to also copy linked tables found!
		if ($state->task === 'save2copy' && $state->{'library.new'})
		{
			// get new ID
			$newID = $state->{'library.id'};
			// get old ID
			$oldID = $this->input->get('id', 0, 'INT');
			// linked tables to update
			$_tablesArray = array(
				'library_config',
				'library_files_folders_urls'
			);
			foreach($_tablesArray as $_updateTable)
			{
				// get the linked ID
				if ($_value = ComponentbuilderHelper::getVar($_updateTable, $oldID, 'library', 'id'))
				{
					// copy fields to new linked table
					ComponentbuilderHelper::copyItem(/*id->*/ $_value, /*table->*/ $_updateTable, /*change->*/ array('library' => $newID));
				}
			}
		}

		return;
	}

}