script.php

<?php
/**
 * @package    jYProExtra System Plugin
 * @version    __DEPLOY_VERSION__
 * @author     Septdir Workshop - www.septdir.com
 * @copyright  Copyright (c) 2018 - 2021 Septdir Workshop. All rights reserved.
 * @license    GNU/GPL license: https://www.gnu.org/copyleft/gpl.html
 * @link       https://www.septdir.com/
 */

defined('_JEXEC') or die;

use Joomla\CMS\Factory;
use Joomla\CMS\Filesystem\File;
use Joomla\CMS\Filesystem\Folder;
use Joomla\CMS\Filesystem\Path;
use Joomla\CMS\Installer\Installer;
use Joomla\CMS\Installer\InstallerAdapter;
use Joomla\CMS\Language\Text;
use Joomla\CMS\Layout\LayoutHelper;
use Joomla\CMS\Log\Log;
use Joomla\CMS\Version;

class PlgSystemJYProExtraInstallerScript
{
	/**
	 * Minimum PHP version required to install the extension.
	 *
	 * @var  string
	 *
	 * @since  1.0.0
	 */
	protected $minimumPhp = '7.0';

	/**
	 * Minimum Joomla version required to install the extension.
	 *
	 * @var  string
	 *
	 * @since  1.0.0
	 */
	protected $minimumJoomla = '4.2';

	/**
	 * YOOtheme external files.
	 *
	 * @var  array
	 *
	 * @since  1.3.1
	 */
	protected $yoothemeFiles = array(
		array(
			'src'  => JPATH_ROOT . '/plugins/system/jyproextra/templates/jyproextra-image.php',
			'dest' => JPATH_ROOT . '/templates/yootheme/templates/jyproextra-image.php',
			'type' => 'file',
		),
		array(
			'src'  => JPATH_ROOT . '/plugins/system/jyproextra/elements/joomla_breadcrumbs',
			'dest' => JPATH_ROOT . '/templates/yootheme/vendor/yootheme/builder-joomla/elements/joomla_breadcrumbs',
			'type' => 'folder',
		)
	);

	/**
	 * Runs right before any installation action.
	 *
	 * @param   string  $type  Type of PostFlight action. Possible values are:
	 *
	 * @throws  Exception
	 *
	 * @return  boolean True on success, false on failure.
	 *
	 * @since  1.0.1
	 */
	function preflight($type)
	{
		// Check compatible
		if (!$this->checkCompatible()) return false;

		return true;
	}

	/**
	 * Method to check compatible.
	 *
	 * @throws  Exception
	 *
	 * @return  boolean True on success, false on failure.
	 *
	 * @since  1.0.0
	 */
	protected function checkCompatible()
	{
		// Check old joomla
		if (!class_exists('Joomla\CMS\Version'))
		{
			JFactory::getApplication()->enqueueMessage(JText::sprintf('PLG_SYSTEM_JYPROEXTRA_ERROR_COMPATIBLE_JOOMLA',
				$this->minimumJoomla), 'error');

			return false;
		}

		$app = Factory::getApplication();

		// Check php
		if (!(version_compare(PHP_VERSION, $this->minimumPhp) >= 0))
		{
			$app->enqueueMessage(Text::sprintf('PLG_SYSTEM_JYPROEXTRA_ERROR_COMPATIBLE_PHP', $this->minimumPhp),
				'error');

			return false;
		}

		// Check joomla version
		$jversion = new Version();
		if (!$jversion->isCompatible($this->minimumJoomla))
		{
			$app->enqueueMessage(Text::sprintf('PLG_SYSTEM_JYPROEXTRA_ERROR_COMPATIBLE_JOOMLA', $this->minimumJoomla),
				'error');

			return false;
		}

		return true;
	}

	/**
	 * Runs right after any installation action.
	 *
	 * @param   string            $type    Type of PostFlight action. Possible values are:
	 * @param   InstallerAdapter  $parent  Parent object calling object.
	 *
	 * @throws  Exception
	 *
	 * @return  boolean True on success, false on failure.
	 *
	 * @since  1.0.0
	 */
	function postflight($type, $parent)
	{
		// Parse layouts
		$this->parseLayouts($parent->getParent()->getManifest()->layouts, $parent->getParent());

		$app = Factory::getApplication();
		if ($type == 'install')
		{
			// Enable plugin
			$this->enablePlugin($parent);

			// Add after install message
			$app->enqueueMessage(Text::_('PLG_SYSTEM_JYPROEXTRA_AFTER_INSTALL'), 'notice');
		}

		// Copy YOOtheme external files
		$this->copyYOOthemeFiles($parent->getParent());

		// Add donate message
		$app->enqueueMessage(LayoutHelper::render('plugins.system.jyproextra.donate.message'), '');

		return true;
	}

	/**
	 * Method to parse through a layout element of the installation manifest and take appropriate action.
	 *
	 * @param   SimpleXMLElement  $element    The XML node to process.
	 * @param   Installer         $installer  Installer calling object.
	 *
	 * @return  boolean  True on success.
	 *
	 * @since  1.3.0
	 */
	public function parseLayouts(SimpleXMLElement $element, $installer)
	{
		if (!$element || !count($element->children()))
		{
			return false;
		}

		// Get destination
		$folder      = ((string) $element->attributes()->destination) ? '/' . $element->attributes()->destination : null;
		$destination = Path::clean(JPATH_ROOT . '/layouts' . $folder);

		// Get source
		$folder = (string) $element->attributes()->folder;
		$source = ($folder && file_exists($installer->getPath('source') . '/' . $folder)) ?
			$installer->getPath('source') . '/' . $folder : $installer->getPath('source');

		// Prepare files
		$copyFiles = array();
		foreach ($element->children() as $file)
		{
			$path         = array();
			$path['src']  = Path::clean($source . '/' . $file);
			$path['dest'] = Path::clean($destination . '/' . $file);

			// Is this path a file or folder?
			$path['type'] = $file->getName() === 'folder' ? 'folder' : 'file';
			if (basename($path['dest']) !== $path['dest'])
			{
				$newdir = dirname($path['dest']);
				if (!Folder::create($newdir))
				{
					Log::add(Text::sprintf('JLIB_INSTALLER_ERROR_CREATE_DIRECTORY', $newdir), Log::WARNING, 'jerror');

					return false;
				}
			}

			$copyFiles[] = $path;
		}

		return $installer->copyFiles($copyFiles);
	}

	/**
	 * Method to copy YOOtheme external files.
	 *
	 * @param   Installer  $installer  Installer calling object.
	 *
	 * @return  bool True on success, False on failure.
	 *
	 * @since  1.3.1
	 */
	public function copyYOOthemeFiles($installer)
	{
		$copyFiles = array();
		foreach ($this->yoothemeFiles as $path)
		{
			$path['src']  = Path::clean($path['src']);
			$path['dest'] = Path::clean($path['dest']);
			if (basename($path['dest']) !== $path['dest'])
			{
				$newdir = dirname($path['dest']);
				if (!Folder::create($newdir))
				{
					Log::add(Text::sprintf('JLIB_INSTALLER_ERROR_CREATE_DIRECTORY', $newdir), Log::WARNING, 'jerror');

					return false;
				}
			}

			$copyFiles[] = $path;
		}

		return $installer->copyFiles($copyFiles, true);
	}

	/**
	 * Enable plugin after installation.
	 *
	 * @param   InstallerAdapter  $parent  Parent object calling object.
	 *
	 * @since  1.0.0
	 */
	protected function enablePlugin($parent)
	{
		// Prepare plugin object
		$plugin          = new stdClass();
		$plugin->type    = 'plugin';
		$plugin->element = $parent->getElement();
		$plugin->folder  = (string) $parent->getParent()->manifest->attributes()['group'];
		$plugin->enabled = 1;

		// Update record
		Factory::getDbo()->updateObject('#__extensions', $plugin, array('type', 'element', 'folder'));
	}

	/**
	 * This method is called after extension is uninstalled.
	 *
	 * @param   InstallerAdapter  $parent  Parent object calling object.
	 *
	 * @since  1.2.0
	 */
	public function uninstall($parent)
	{
		// Remove layouts
		$this->removeLayouts($parent->getParent()->getManifest()->layouts);

		// Remove YOOtheme external files
		$this->removeYOOthemeFiles();
	}

	/**
	 * Method to parse through a layouts element of the installation manifest and remove the files that were installed.
	 *
	 * @param   SimpleXMLElement  $element  The XML node to process.
	 *
	 * @return  boolean  True on success.
	 *
	 * @since  1.3.0
	 */
	protected function removeLayouts(SimpleXMLElement $element)
	{
		if (!$element || !count($element->children()))
		{
			return false;
		}

		// Get the array of file nodes to process
		$files = $element->children();

		// Get source
		$folder = ((string) $element->attributes()->destination) ? '/' . $element->attributes()->destination : null;
		$source = Path::clean(JPATH_ROOT . '/layouts' . $folder);

		// Process each file in the $files array (children of $tagName).
		foreach ($files as $file)
		{
			$path = Path::clean($source . '/' . $file);

			// Actually delete the files/folders
			if (is_dir($path))
			{
				$val = Folder::delete($path);
			}
			else
			{
				$val = File::delete($path);
			}

			if ($val === false)
			{
				Log::add('Failed to delete ' . $path, Log::WARNING, 'jerror');

				return false;
			}
		}

		if (!empty($folder))
		{
			Folder::delete($source);
		}

		return true;
	}

	/**
	 * Method to remove YOOtheme external files.
	 *
	 * @since  1.3.1
	 */
	protected function removeYOOthemeFiles()
	{
		foreach ($this->yoothemeFiles as $path)
		{
			$path['dest'] = Path::clean($path['dest']);
			if ($path['type'] === 'file' && File::exists($path['dest']))
			{
				File::delete($path['dest']);
			}
			elseif ($path['type'] === 'folder' && Folder::exists($path['dest']))
			{
				Folder::delete($path['dest']);
			}
		}
	}
}