<?php
/*-------------------------------------------------------------------------------------------------------------|  www.vdm.io  |------/
 ____                                                  ____                 __               __               __
/\  _`\                                               /\  _`\   __         /\ \__         __/\ \             /\ \__
\ \,\L\_\     __   _ __    ___ ___     ___     ___    \ \ \/\ \/\_\    ____\ \ ,_\  _ __ /\_\ \ \____  __  __\ \ ,_\   ___   _ __
 \/_\__ \   /'__`\/\`'__\/' __` __`\  / __`\ /' _ `\   \ \ \ \ \/\ \  /',__\\ \ \/ /\`'__\/\ \ \ '__`\/\ \/\ \\ \ \/  / __`\/\`'__\
   /\ \L\ \/\  __/\ \ \/ /\ \/\ \/\ \/\ \L\ \/\ \/\ \   \ \ \_\ \ \ \/\__, `\\ \ \_\ \ \/ \ \ \ \ \L\ \ \ \_\ \\ \ \_/\ \L\ \ \ \/
   \ `\____\ \____\\ \_\ \ \_\ \_\ \_\ \____/\ \_\ \_\   \ \____/\ \_\/\____/ \ \__\\ \_\  \ \_\ \_,__/\ \____/ \ \__\ \____/\ \_\
    \/_____/\/____/ \/_/  \/_/\/_/\/_/\/___/  \/_/\/_/    \/___/  \/_/\/___/   \/__/ \/_/   \/_/\/___/  \/___/   \/__/\/___/  \/_/

/------------------------------------------------------------------------------------------------------------------------------------/

	@version		2.0.x
	@created		22nd October, 2015
	@package		Sermon Distributor
	@subpackage		external_source.php
	@author			Llewellyn van der Merwe <https://www.vdm.io/>	
	@copyright		Copyright (C) 2015. All Rights Reserved
	@license		GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html 
	
	A sermon distributor that links to Dropbox. 
                                                             
/----------------------------------------------------------------------------------------------------------------------------------*/

// No direct access to this file
defined('_JEXEC') or die('Restricted access');

/**
 * External_source Controller
 */
class SermondistributorControllerExternal_source 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())
	{
		$this->view_list = 'External_sources'; // safeguard for setting the return view listing to the main view.
		parent::__construct($config);
	}

	public function clearLocalListing() 
	{
		// Check for request forgeries.
		JSession::checkToken() or jexit(JText::_('JINVALID_TOKEN'));
		// get the data
		$originalData = $this->input->post->get('jform', array(), 'array');
		if (isset($originalData['id']) && $originalData['id'] > 0)
		{			
			// get the needed
			$app   	= JFactory::getApplication();
			$lang  	= JFactory::getLanguage();
			$model 	= $this->getModel();
			$user 	= JFactory::getUser();
			$context = "$this->option.edit.$this->context";
			if (!$user->authorise('external_source.clear_local_listing', 'com_sermondistributor'))
			{
				// force production is not permitted
				$app->enqueueMessage(JText::_('COM_SERMONDISTRIBUTOR_YOU_DO_NOT_HAVE_PERMISSION_TO_CLEAR_LOCAL_LISTING'), 'error');
				// Save the data in the session.
				$app->setUserState($context . '.data', $originalData);
				// Redirect back to the edit screen.
				$this->setRedirect(
					JRoute::_(
						'index.php?option=' . $this->option . '&view=' . $this->view_item
						. $this->getRedirectToItemAppend($originalData['id'], 'id'), false
					)
				);
				return false;
			}
			// clear the listing
			$cleared = $model->clearLocalListing($originalData['id']);
			if (!$cleared)
			{
				// force production is not permitted
				$app->enqueueMessage(JText::_('COM_SERMONDISTRIBUTOR_LOCAL_LISTING_WAS_NOT_CLEARED'), 'error');
				// Save the data in the session.
				$app->setUserState($context . '.data', $originalData);
				// Redirect back to the edit screen.
				$this->setRedirect(
					JRoute::_(
						'index.php?option=' . $this->option . '&view=' . $this->view_item
						. $this->getRedirectToItemAppend($originalData['id'], 'id'), false
					)
				);
				return false;
			}
			// force production is not permitted
			$app->enqueueMessage(JText::_('COM_SERMONDISTRIBUTOR_LOCAL_LISTING_WAS_CLEARED_SUCCESSFULLY'), 'success');
			// Save the data in the session.
			$app->setUserState($context . '.data', $originalData);
			// Redirect back to the edit screen.
			$this->setRedirect(
				JRoute::_(
					'index.php?option=' . $this->option . '&view=' . $this->view_item
					. $this->getRedirectToItemAppend($originalData['id'], 'id'), false
				)
			);
			return true;
		}
		$this->setError(JText::_('COM_SERMONDISTRIBUTOR_CLEARING_LOCAL_LISTING_CAN_NOT_BE_DONE'));
		$this->setMessage($this->getError(), 'error');
		// Redirect back to the list screen.
		$this->setRedirect(
			JRoute::_(
				'index.php?option=' . $this->option . '&view=' . $this->view_list
				. $this->getRedirectToListAppend(), false
			)
		);
		return false;
	}

	public function resetUpdateStatus() 
	{
		// Check for request forgeries.
		JSession::checkToken() or jexit(JText::_('JINVALID_TOKEN'));
		// get the data
		$originalData = $this->input->post->get('jform', array(), 'array');
		if (isset($originalData['id']) && $originalData['id'] > 0)
		{			
			// get the needed
			$app   	= JFactory::getApplication();
			$lang  	= JFactory::getLanguage();
			$model 	= $this->getModel();
			$user 	= JFactory::getUser();
			$context = "$this->option.edit.$this->context";
			if (!$user->authorise('external_source.reset_update_status', 'com_sermondistributor'))
			{
				// force production is not permitted
				$app->enqueueMessage(JText::_('COM_SERMONDISTRIBUTOR_YOU_DO_NOT_HAVE_PERMISSION_TO_RESET_UPDATE_STATUS'), 'error');
				// Save the data in the session.
				$app->setUserState($context . '.data', $originalData);
				// Redirect back to the edit screen.
				$this->setRedirect(
					JRoute::_(
						'index.php?option=' . $this->option . '&view=' . $this->view_item
						. $this->getRedirectToItemAppend($originalData['id'], 'id'), false
					)
				);
				return false;
			}
			// reset update status
			$reset = $model->resetUpdateStatus($originalData['id']);
			if (isset($reset['error']))
			{
				// reset update status did not happen
				$app->enqueueMessage($reset['error'], 'error');
				// Save the data in the session.
				$app->setUserState($context . '.data', $originalData);
				// Redirect back to the edit screen.
				$this->setRedirect(
					JRoute::_(
						'index.php?option=' . $this->option . '&view=' . $this->view_item
						. $this->getRedirectToItemAppend($originalData['id'], 'id'), false
					)
				);
				return false;
			}
			// reset update status success
			$app->enqueueMessage(JText::_('COM_SERMONDISTRIBUTOR_RESETTING_THE_UPDATE_STATUS_WAS_SUCCESSFUL'), 'success');
			// Save the data in the session.
			$app->setUserState($context . '.data', $originalData);
			// Redirect back to the edit screen.
			$this->setRedirect(
				JRoute::_(
					'index.php?option=' . $this->option . '&view=' . $this->view_item
					. $this->getRedirectToItemAppend($originalData['id'], 'id'), false
				)
			);
			return true;
		}
		$this->setError(JText::_('COM_SERMONDISTRIBUTOR_RESET_UPDATE_STATUS_CAN_NOT_BE_DONE'));
		$this->setMessage($this->getError(), 'error');
		// Redirect back to the list screen.
		$this->setRedirect(
			JRoute::_(
				'index.php?option=' . $this->option . '&view=' . $this->view_list
				. $this->getRedirectToListAppend(), false
			)
		);
		return false;
	}

        /**
	 * 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 = $user->authorise('external_source.access', 'com_sermondistributor');
		if (!$access)
		{
			return false;
		}

		// In the absense of better information, revert to the component permissions.
		return $user->authorise('external_source.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('external_source.access', 'com_sermondistributor.external_source.' . (int) $recordId) &&  $user->authorise('external_source.access', 'com_sermondistributor'));
		if (!$access)
		{
			return false;
		}

		if ($recordId)
		{
			// The record has been set. Check the record permissions.
			$permission = $user->authorise('external_source.edit', 'com_sermondistributor.external_source.' . (int) $recordId);
			if (!$permission)
			{
				if ($user->authorise('external_source.edit.own', 'com_sermondistributor.external_source.' . $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('external_source.edit.own', 'com_sermondistributor'))
						{
							return true;
						}
					}
				}
				return false;
			}
		}
		// Since there is no permission, revert to the component permissions.
		return $user->authorise('external_source.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('External_source', '', array());

		// Preset the redirect
		$this->setRedirect(JRoute::_('index.php?option=com_sermondistributor&view=external_sources' . $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())
	{
		return;
	}

}