<?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\Tag;

use Joomla\CMS\Component\ComponentHelper;
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\Object\CMSObject;
use Joomla\CMS\Toolbar\ToolbarHelper;

/**
 * HTML View class for the Tags component
 *
 * @since  3.1
 */
class HtmlView extends BaseHtmlView
{
    /**
     * The Form object
     *
     * @var  \Joomla\CMS\Form\Form
     */
    protected $form;

    /**
     * The active item
     *
     * @var  object
     */
    protected $item;

    /**
     * The model state
     *
     * @var  CMSObject
     */
    protected $state;

    /**
     * Flag if an association exists
     *
     * @var  boolean
     */
    protected $assoc;

    /**
     * The actions the user is authorised to perform
     *
     * @var    CMSObject
     *
     * @since  4.0.0
     */
    protected $canDo;

    /**
     * Display the view
     *
     * @param   string  $tpl  The name of the template file to parse; automatically searches through the template paths.
     *
     * @return  void
     */
    public function display($tpl = null)
    {
        $this->form  = $this->get('Form');
        $this->item  = $this->get('Item');
        $this->state = $this->get('State');

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

        $this->addToolbar();

        parent::display($tpl);
    }

    /**
     * Add the page title and toolbar.
     *
     * @since  3.1
     *
     * @return void
     */
    protected function addToolbar()
    {
        Factory::getApplication()->input->set('hidemainmenu', true);

        $user       = $this->getCurrentUser();
        $userId     = $user->get('id');
        $isNew      = ($this->item->id == 0);
        $checkedOut = !(is_null($this->item->checked_out) || $this->item->checked_out == $userId);

        $canDo = ContentHelper::getActions('com_tags');

        ToolbarHelper::title($isNew ? Text::_('COM_TAGS_MANAGER_TAG_NEW') : Text::_('COM_TAGS_MANAGER_TAG_EDIT'), 'tag');

        // Build the actions for new and existing records.
        if ($isNew) {
            ToolbarHelper::apply('tag.apply');
            ToolbarHelper::saveGroup(
                [
                    ['save', 'tag.save'],
                    ['save2new', 'tag.save2new']
                ],
                'btn-success'
            );

            ToolbarHelper::cancel('tag.cancel');
        } else {
            // Since it's an existing record, check the edit permission, or fall back to edit own if the owner.
            $itemEditable = $canDo->get('core.edit') || ($canDo->get('core.edit.own') && $this->item->created_user_id == $userId);

            $toolbarButtons = [];

            // Can't save the record if it's checked out and editable
            if (!$checkedOut && $itemEditable) {
                ToolbarHelper::apply('tag.apply');
                $toolbarButtons[] = ['save', 'tag.save'];

                // We can save this record, but check the create permission to see if we can return to make a new one.
                if ($canDo->get('core.create')) {
                    $toolbarButtons[] = ['save2new', 'tag.save2new'];
                }
            }

            // If checked out, we can still save
            if ($canDo->get('core.create')) {
                $toolbarButtons[] = ['save2copy', 'tag.save2copy'];
            }

            ToolbarHelper::saveGroup(
                $toolbarButtons,
                'btn-success'
            );

            ToolbarHelper::cancel('tag.cancel', 'JTOOLBAR_CLOSE');

            if (ComponentHelper::isEnabled('com_contenthistory') && $this->state->params->get('save_history', 0) && $itemEditable) {
                ToolbarHelper::versions('com_tags.tag', $this->item->id);
            }
        }

        ToolbarHelper::divider();
        ToolbarHelper::help('Tags:_New_or_Edit');
    }
}
