<?php
/**
 * @package     Joomla.Administrator
 * @subpackage  com_workflow
 *
 * @copyright   (C) 2018 Open Source Matters, Inc. <https://www.joomla.org>
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */
namespace Joomla\Component\Workflow\Administrator\View\Transitions;

\defined('_JEXEC') or die;

use Joomla\CMS\Factory;
use Joomla\CMS\Helper\ContentHelper;
use Joomla\CMS\Language\Text;
use Joomla\CMS\MVC\View\GenericDataException;
use Joomla\CMS\MVC\View\HtmlView as BaseHtmlView;
use Joomla\CMS\Router\Route;
use Joomla\CMS\Toolbar\Toolbar;
use Joomla\CMS\Toolbar\ToolbarHelper;

/**
 * Transitions view class for the Workflow package.
 *
 * @since  4.0.0
 */
class HtmlView extends BaseHtmlView
{
	/**
	 * An array of transitions
	 *
	 * @var     array
	 * @since  4.0.0
	 */
	protected $transitions;

	/**
	 * The model state
	 *
	 * @var     object
	 * @since  4.0.0
	 */
	protected $state;

	/**
	 * The HTML for displaying sidebar
	 *
	 * @var     string
	 * @since  4.0.0
	 */
	protected $sidebar;

	/**
	 * The pagination object
	 *
	 * @var     \JPagination
	 * @since  4.0.0
	 */
	protected $pagination;

	/**
	 * Form object for search filters
	 *
	 * @var     \JForm
	 * @since  4.0.0
	 */
	public $filterForm;

	/**
	 * The active search filters
	 *
	 * @var     array
	 * @since  4.0.0
	 */
	public $activeFilters;

	/**
	 * The current workflow
	 *
	 * @var     object
	 * @since  4.0.0
	 */
	protected $workflow;

	/**
	 * The ID of current workflow
	 *
	 * @var     integer
	 * @since  4.0.0
	 */
	protected $workflowID;

	/**
	 * The name of current extension
	 *
	 * @var     string
	 * @since  4.0.0
	 */
	protected $extension;

	/**
	 * The section of the current extension
	 *
	 * @var    string
	 * @since  4.0.0
	 */
	protected $section;

	/**
	 * Display the view
	 *
	 * @param   string  $tpl  The name of the template file to parse; automatically searches through the template paths.
	 *
	 * @return  void
	 *
	 * @since  4.0.0
	 */
	public function display($tpl = null)
	{
		$this->state            = $this->get('State');
		$this->transitions      = $this->get('Items');
		$this->pagination       = $this->get('Pagination');
		$this->filterForm    	= $this->get('FilterForm');
		$this->activeFilters 	= $this->get('ActiveFilters');
		$this->workflow         = $this->get('Workflow');

		// Check for errors.
		if (count($errors = $this->get('Errors')))
		{
			throw new GenericDataException(implode("\n", $errors), 500);
		}

		$this->workflowID    = $this->workflow->id;

		$parts = explode('.', $this->workflow->extension);

		$this->extension = array_shift($parts);

		if (!empty($parts))
		{
			$this->section = array_shift($parts);
		}

		$this->addToolbar();

		parent::display($tpl);
	}

	/**
	 * Add the page title and toolbar.
	 *
	 * @return  void
	 *
	 * @since  4.0.0
	 */
	protected function addToolbar()
	{
		$canDo = ContentHelper::getActions($this->extension, 'workflow', $this->workflowID);

		$user = Factory::getUser();

		$toolbar = Toolbar::getInstance('toolbar');

		ToolbarHelper::title(Text::sprintf('COM_WORKFLOW_TRANSITIONS_LIST', Text::_($this->state->get('active_workflow'))), 'address contact');

		$arrow  = Factory::getLanguage()->isRtl() ? 'arrow-right' : 'arrow-left';

		ToolbarHelper::link(
			Route::_('index.php?option=com_workflow&view=workflows&extension=' . $this->escape($this->workflow->extension)),
			'JTOOLBAR_BACK',
			$arrow
		);

		if ($canDo->get('core.create'))
		{
			$toolbar->addNew('transition.add');
		}

		if ($canDo->get('core.edit.state') || $user->authorise('core.admin'))
		{
			$dropdown = $toolbar->dropdownButton('status-group')
				->text('JTOOLBAR_CHANGE_STATUS')
				->toggleSplit(false)
				->icon('icon-ellipsis-h')
				->buttonClass('btn btn-action')
				->listCheck(true);

			$childBar = $dropdown->getChildToolbar();

			$childBar->publish('transitions.publish', 'JTOOLBAR_ENABLE');
			$childBar->unpublish('transitions.unpublish', 'JTOOLBAR_DISABLE');

			if ($canDo->get('core.admin'))
			{
				$childBar->checkin('transitions.checkin')->listCheck(true);
			}

			if ($this->state->get('filter.published') !== '-2')
			{
				$childBar->trash('transitions.trash');
			}
		}

		if ($this->state->get('filter.published') === '-2' && $canDo->get('core.delete'))
		{
			$toolbar->delete('transitions.delete')
				->text('JTOOLBAR_EMPTY_TRASH')
				->message('JGLOBAL_CONFIRM_DELETE')
				->listCheck(true);
		}

		$toolbar->help('JHELP_COMPONENTS_WORKFLOW_TRANSITIONS_LIST');
	}
}
