<?php
/**
 * Kunena QuickIcon Plugin
 *
 * @package     Kunena.Plugins
 * @subpackage  QuickIcon
 *
 * @copyright   (C) 2008 - 2018 Kunena Team. All rights reserved.
 * @license     https://www.gnu.org/copyleft/gpl.html GNU/GPL
 * @link        https://www.kunena.org
 **/
defined('_JEXEC') or die();

/**
 * Class plgQuickiconKunena
 */
class plgQuickiconKunena extends JPlugin
{
	public function __construct(& $subject, $config)
	{
		// Do not load if Kunena version is not supported or KunenaForum isn't detected
		if (!class_exists('KunenaForum'))
		{
			return;
		}

		parent::__construct($subject, $config);

		// ! Always load language after parent::construct else the name of plugin isn't yet set
		$this->loadLanguage('plg_quickicon_kunena.sys');
	}

	/**
	 * Display Kunena backend icon in Joomla 2.5+
	 *
	 * @param   string  $context
	 *
	 * @return array|null
	 */
	public function onGetIcons($context)
	{
		if ($context != $this->params->get('context', 'mod_quickicon') || !JFactory::getUser()->authorise('core.manage', 'com_kunena'))
		{
			return null;
		}

		KunenaFactory::loadLanguage('com_kunena.sys', 'admin');

		$updateInfo = null;

		if (KunenaForum::installed() && JFactory::getUser()->authorise('core.manage', 'com_installer'))
		{
			$updateSite = 'https://update.kunena.org/%';
			$db         = JFactory::getDbo();

			$query = $db->getQuery(true)
				->select('*')
				->from($db->qn('#__updates'))
				->where($db->qn('extension_id') . ' > 0')
				->where($db->qn('detailsurl') . ' LIKE ' . $db->q($updateSite));
			$db->setQuery($query);
			$list = (array) $db->loadObjectList();

			if ($list)
			{
				$updateInfo          = new stdClass;
				$updateInfo->addons  = 0;
				$updateInfo->version = 0;

				foreach ($list as $item)
				{
					if ($item->element == 'pkg_kunena')
					{
						$updateInfo->version = $item->version;
					}
					else
					{
						$updateInfo->addons++;
					}
				}
			}
			else
			{
				$query = $db->getQuery(true)
					->select('update_site_id')
					->from($db->qn('#__update_sites'))
					->where($db->qn('enabled') . ' = 0')
					->where($db->qn('location') . ' LIKE ' . $db->q($updateSite));
				$db->setQuery($query);
				$updateInfo = !$db->loadResult();
			}
		}

		$link = 'index.php?option=com_kunena';

		$useIcons = version_compare(JVERSION, '3.0', '>');

		if (!KunenaForum::installed())
		{
			// Not fully installed
			$img  = $useIcons ? 'warning' : 'kunena/icons/icon-48-kupdate-alert-white.png';
			$icon = 'kunena/icons/icon-48-kupdate-alert-white.png';
			$text = JText::_('PLG_QUICKICON_KUNENA_COMPLETE_INSTALLATION');
		}
		elseif ($updateInfo === null)
		{
			// Unsupported
			$img  = $useIcons ? 'remove' : 'kunena/icons/kunena-logo-48-white.png';
			$icon = 'kunena/icons/kunena-logo-48-white.png';
			$text = JText::_('COM_KUNENA');
		}
		elseif ($updateInfo === false)
		{
			// Disabled
			$img  = $useIcons ? 'minus' : 'kunena/icons/icon-48-kupdate-alert-white.png';
			$icon = 'kunena/icons/icon-48-kupdate-alert-white.png';
			$text = JText::_('COM_KUNENA') . '<br />' . JText::_('PLG_QUICKICON_KUNENA_UPDATE_DISABLED');
		}
		elseif (!empty($updateInfo->version) && version_compare(KunenaForum::version(), $updateInfo->version, '<'))
		{
			// Has updates
			$img  = $useIcons ? 'download' : 'kunena/icons/icon-48-kupdate-update-white.png';
			$icon = 'kunena/icons/icon-48-kupdate-update-white.png';
			$text = 'Kunena ' . $updateInfo->version . '<br />' . JText::_('PLG_QUICKICON_KUNENA_UPDATE_NOW');
			$link = 'index.php?option=com_installer&view=update&filter_search=kunena';
		}
		elseif (!empty($updateInfo->addons))
		{
			// Has updated add-ons
			$img  = $useIcons ? 'download' : 'kunena/icons/icon-48-kupdate-update-white.png';
			$icon = 'kunena/icons/icon-48-kupdate-update-white.png';
			$text = JText::_('COM_KUNENA') . '<br />' . JText::sprintf('PLG_QUICKICON_KUNENA_UPDATE_ADDONS', $updateInfo->addons);
			$link = 'index.php?option=com_installer&view=update&filter_search=kunena';
		}
		else
		{
			// Already in the latest release
			$img  = $useIcons ? 'comments' : 'kunena/icons/icon-48-kupdate-good-white.png';
			$icon = 'kunena/icons/icon-48-kupdate-good-white.png';
			$text = JText::_('COM_KUNENA');
		}

		// Use one line in J!3.0.
		if (version_compare(JVERSION, '3.0', '>'))
		{
			$text = preg_replace('|<br />|', ' - ', $text);
		}

		return array(array(
			'link'   => JRoute::_($link),
			'image'  => $img,
			'text'   => $text,
			'icon'   => $icon,
			'access' => array('core.manage', 'com_kunena'),
			'id'     => 'com_kunena_icon'));
	}
}