<?php
/**
 * @package     Joomla.Administrator
 * @subpackage  com_tags
 *
 * @copyright   (C) 2013 Open Source Matters, Inc. <https://www.joomla.org>
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\Component\Tags\Administrator\View\Tags;

\defined('_JEXEC') or die;

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

/**
 * Tags view class for the Tags package.
 *
 * @since  3.1
 */
class HtmlView extends BaseHtmlView
{
	/**
	 * An array of items
	 *
	 * @var  array
	 */
	protected $items;

	/**
	 * The pagination object
	 *
	 * @var  \Joomla\CMS\Pagination\Pagination
	 */
	protected $pagination;

	/**
	 * The model state
	 *
	 * @var  \JObject
	 */
	protected $state;

	/**
	 * 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;

	/**
	 * Is this view an Empty State
	 *
	 * @var  boolean
	 * @since 4.0.0
	 */
	private $isEmptyState = false;

	/**
	 * Execute and display a template script.
	 *
	 * @param   string  $tpl  The name of the template file to parse; automatically searches through the template paths.
	 *
	 * @return  mixed   A string if successful, otherwise an Error object.
	 */
	public function display($tpl = null)
	{
		$this->items         = $this->get('Items');
		$this->pagination    = $this->get('Pagination');
		$this->state         = $this->get('State');
		$this->filterForm    = $this->get('FilterForm');
		$this->activeFilters = $this->get('ActiveFilters');

		if (!\count($this->items) && $this->isEmptyState = $this->get('IsEmptyState'))
		{
			$this->setLayout('emptystate');
		}

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

		// Preprocess the list of items to find ordering divisions.
		foreach ($this->items as &$item)
		{
			$this->ordering[$item->parent_id][] = $item->id;
		}

		// We don't need toolbar in the modal window.
		if ($this->getLayout() !== 'modal')
		{
			$this->addToolbar();

			// We do not need to filter by language when multilingual is disabled
			if (!Multilanguage::isEnabled())
			{
				unset($this->activeFilters['language']);
				$this->filterForm->removeField('language', 'filter');
			}
		}

		parent::display($tpl);
	}

	/**
	 * Add the page title and toolbar.
	 *
	 * @return void
	 *
	 * @since   3.1
	 */
	protected function addToolbar()
	{
		$canDo = ContentHelper::getActions('com_tags');
		$user  = Factory::getApplication()->getIdentity();

		// Get the toolbar object instance
		$toolbar = Toolbar::getInstance('toolbar');

		ToolbarHelper::title(Text::_('COM_TAGS_MANAGER_TAGS'), 'tags');

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

		if (!$this->isEmptyState && ($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();

			if ($canDo->get('core.edit.state'))
			{
				$childBar->publish('tags.publish')->listCheck(true);
				$childBar->unpublish('tags.unpublish')->listCheck(true);
				$childBar->archive('tags.archive')->listCheck(true);
			}

			if ($user->authorise('core.admin'))
			{
				$childBar->checkin('tags.checkin')->listCheck(true);
			}

			if ($canDo->get('core.edit.state') && $this->state->get('filter.published') != -2)
			{
				$childBar->trash('tags.trash')->listCheck(true);
			}

			// Add a batch button
			if ($canDo->get('core.create') && $canDo->get('core.edit') && $canDo->get('core.edit.state'))
			{
				$childBar->popupButton('batch')
					->text('JTOOLBAR_BATCH')
					->selector('collapseModal')
					->listCheck(true);
			}
		}

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

		if ($canDo->get('core.admin') || $canDo->get('core.options'))
		{
			$toolbar->preferences('com_tags');
		}

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