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<?php
/**
* Akeeba Frontend Framework (FEF)
*
* @package fef
* @copyright (c) 2017-2020 Nicholas K. Dionysopoulos / Akeeba Ltd
* @license GNU General Public License version 3, or later
*
* Created by Crystal Dionysopoulou for Akeeba Ltd, https://www.akeeba.com
*/
defined('_JEXEC') or die();
use Joomla\CMS\Date\Date as JDate;
use Joomla\CMS\Factory as JFactory;
use Joomla\CMS\Filesystem\File;
use Joomla\CMS\Filesystem\Folder;
use Joomla\CMS\Installer\Adapter\FileAdapter as JInstallerAdapterFile;
use Joomla\CMS\Installer\Installer as JInstaller;
use Joomla\CMS\Log\Log as JLog;
/**
* Akeeba FEF Installation Script
*
* @noinspection PhpUnused
*/
class file_fefInstallerScript
{
/**
* The minimum PHP version required to install this extension
*
* @var string
*/
protected $minimumPHPVersion = '7.1.0';
/**
* The minimum Joomla! version required to install this extension
*
* @var string
*/
protected $minimumJoomlaVersion = '3.9.0';
/**
* The maximum Joomla! version this extension can be installed on
*
* @var string
*/
protected $maximumJoomlaVersion = '4.0.99';
/**
* Joomla! pre-flight event. This runs before Joomla! installs or updates the component. This is our last chance to
* tell Joomla! if it should abort the installation.
*
* @param string $type Installation type (install, update, discover_install)
* @param JInstaller|JInstallerAdapterFile $parent Parent object
*
* @return boolean True to let the installation proceed, false to halt the installation
*/
public function preflight($type, $parent)
{
// Check the minimum PHP version
if (!empty($this->minimumPHPVersion))
{
if (defined('PHP_VERSION'))
{
$version = PHP_VERSION;
}
elseif (function_exists('phpversion'))
{
$version = phpversion();
}
else
{
$version = '5.0.0'; // all bets are off!
}
if (!version_compare($version, $this->minimumPHPVersion, 'ge'))
{
$msg = "<p>You need PHP $this->minimumPHPVersion or later to install this package but you are currently using PHP $version</p>";
JLog::add($msg, JLog::WARNING, 'jerror');
return false;
}
}
// Check the minimum Joomla! version
if (!empty($this->minimumJoomlaVersion) && !version_compare(JVERSION, $this->minimumJoomlaVersion, 'ge'))
{
$jVersion = JVERSION;
$msg = "<p>You need Joomla! $this->minimumJoomlaVersion or later to install this package but you only have $jVersion installed.</p>";
JLog::add($msg, JLog::WARNING, 'jerror');
return false;
}
// Check the maximum Joomla! version
if (!empty($this->maximumJoomlaVersion) && !version_compare(JVERSION, $this->maximumJoomlaVersion, 'le'))
{
$jVersion = JVERSION;
$msg = "<p>You need Joomla! $this->maximumJoomlaVersion or earlier to install this package but you have $jVersion installed</p>";
JLog::add($msg, JLog::WARNING, 'jerror');
return false;
}
// In case of an update, discovery etc I need to check if I am an update
if (($type == 'update') && !$this->amIAnUpdate($parent))
{
$msg = "<p>You already have a newer version of Akeeba Frontend Framework installed. If you want to downgrade please uninstall Akeeba Frontend Framework and install the older version.</p><p>If you see this message during the installation or update of an Akeeba extension please ignore it <em>and</em> the immediately following “Files Install: Custom install routine failure” message. They are expected but Joomla! won't allow us to prevent them from showing up.</p>";
JLog::add($msg, JLog::WARNING, 'jerror');
return false;
}
// Delete obsolete font files and folders
if ($type == 'update')
{
// Use pathnames relative to your site's root
$removeFiles = [
'files' => [
// Non-WOFF fonts are not shipped as of 1.0.1 since all modern browsers we target use WOFF
'media/fef/fonts/akeeba/Akeeba-Products.eot',
'media/fef/fonts/akeeba/Akeeba-Products.svg',
'media/fef/fonts/akeeba/Akeeba-Products.ttf',
'media/fef/fonts/Ionicon/ionicons.eot',
'media/fef/fonts/Ionicon/ionicons.svg',
'media/fef/fonts/Ionicon/ionicons.ttf',
// Files renamed in 1.0.8
'css/reset.min.css',
'css/style.min.css',
// JavaScript: Irrelevant for Joomla
'js/darkmode.js',
'js/darkmode.min.js',
'js/darkmode.map',
'js/menu.js',
'js/menu.min.js',
'js/menu.map',
// JavaScript: Uncompressed and map files
'js/dropdown.js',
'js/dropdown.map',
'js/loader.js',
'js/loader.map',
'js/tabs.js',
'js/tabs.map',
],
'folders' => [
],
];
// Remove obsolete files and folders
$this->removeFilesAndFolders($removeFiles);
}
return true;
}
/**
* Runs after install, update or discover_update. In other words, it executes after Joomla! has finished installing
* or updating your component. This is the last chance you've got to perform any additional installations, clean-up,
* database updates and similar housekeeping functions.
*
* @param string $type install, update or discover_update
* @param JInstallerAdapterFile $parent Parent object
*
* @throws Exception
*
* @noinspection PhpUnusedParameterInspection
*/
public function postflight($type, JInstallerAdapterFile $parent)
{
// Remove the obsolete dependency to FOF
$isFOFInstalled = @is_dir(JPATH_LIBRARIES . '/fof30');
if ($isFOFInstalled)
{
// Remove self from FOF 3.0 dependencies
$this->removeDependency('fof30', 'file_fef');
}
}
/**
* Runs on uninstallation
*
* @param JInstallerAdapterFile $parent The parent object
*
* @throws RuntimeException If the uninstallation is not allowed
*
* @noinspection PhpUnusedParameterInspection
*/
public function uninstall($parent)
{
// Check dependencies on FEF
$dependencyCount = count($this->getDependencies('file_fef'));
if ($dependencyCount)
{
$msg = "<p>You have $dependencyCount extension(s) depending on Akeeba Frontend Framework. The package cannot be uninstalled unless these extensions are uninstalled first.</p>";
JLog::add($msg, JLog::WARNING, 'jerror');
throw new RuntimeException($msg, 500);
}
Folder::delete(JPATH_SITE . '/media/fef');
}
/**
* Removes obsolete files and folders
*
* @param array $removeList The files and directories to remove
*/
protected function removeFilesAndFolders($removeList)
{
// Remove files
if (isset($removeList['files']) && !empty($removeList['files']))
{
foreach ($removeList['files'] as $file)
{
$f = JPATH_ROOT . '/' . $file;
if (!is_file($f))
{
continue;
}
File::delete($f);
}
}
// Remove folders
if (isset($removeList['folders']) && !empty($removeList['folders']))
{
foreach ($removeList['folders'] as $folder)
{
$f = JPATH_ROOT . '/' . $folder;
if (!is_dir($f))
{
continue;
}
Folder::delete($f);
}
}
}
/**
* Is this package an update to the currently installed FEF? If not (we're a downgrade) we will return false
* and prevent the installation from going on.
*
* @param JInstallerAdapterFile $parent The parent object
*
* @return bool Am I an update to an existing version>
*/
protected function amIAnUpdate($parent)
{
$grandpa = $parent->getParent();
$source = $grandpa->getPath('source');
$target = JPATH_ROOT . '/media/fef';
if (!Folder::exists($source))
{
// WTF? I can't find myself. I can't install anything.
return false;
}
// If FEF is not really installed (someone removed the directory instead of uninstalling?) I have to install it.
if (!Folder::exists($target))
{
return true;
}
$fefVersion = [];
if (File::exists($target . '/version.txt'))
{
$rawData = @file_get_contents($target . '/version.txt');
$rawData = ($rawData === false) ? "0.0.0\n2011-01-01\n" : $rawData;
$info = explode("\n", $rawData);
$fefVersion['installed'] = [
'version' => trim($info[0]),
'date' => new JDate(trim($info[1])),
];
}
else
{
$fefVersion['installed'] = [
'version' => '0.0',
'date' => new JDate('2011-01-01'),
];
}
$rawData = @file_get_contents($source . '/version.txt');
$rawData = ($rawData === false) ? "0.0.0\n2011-01-01\n" : $rawData;
$info = explode("\n", $rawData);
$fefVersion['package'] = [
'version' => trim($info[0]),
'date' => new JDate(trim($info[1])),
];
return $fefVersion['package']['date']->toUNIX() >= $fefVersion['installed']['date']->toUNIX();
}
/**
* Get the dependencies for a package from the #__akeeba_common table
*
* @param string $package The package
*
* @return array The dependencies
*/
protected function getDependencies($package)
{
$db = JFactory::getDbo();
$query = $db->getQuery(true)
->select($db->qn('value'))
->from($db->qn('#__akeeba_common'))
->where($db->qn('key') . ' = ' . $db->q($package));
try
{
$dependencies = $db->setQuery($query)->loadResult();
$dependencies = json_decode($dependencies, true);
if (empty($dependencies))
{
$dependencies = [];
}
}
catch (Exception $e)
{
$dependencies = [];
}
return $dependencies;
}
/**
* Sets the dependencies for a package into the #__akeeba_common table
*
* @param string $package The package
* @param array $dependencies The dependencies list
*/
protected function setDependencies($package, array $dependencies)
{
$db = JFactory::getDbo();
$query = $db->getQuery(true)
->delete('#__akeeba_common')
->where($db->qn('key') . ' = ' . $db->q($package));
try
{
$db->setQuery($query)->execute();
}
catch (Exception $e)
{
// Do nothing if the old key wasn't found
}
$object = (object) [
'key' => $package,
'value' => json_encode($dependencies),
];
try
{
$db->insertObject('#__akeeba_common', $object, 'key');
}
catch (Exception $e)
{
// Do nothing if the old key wasn't found
}
}
/**
* Removes a package dependency from #__akeeba_common
*
* @param string $package The package
* @param string $dependency The dependency to remove
*/
protected function removeDependency($package, $dependency)
{
$dependencies = $this->getDependencies($package);
if (in_array($dependency, $dependencies))
{
$index = array_search($dependency, $dependencies);
unset($dependencies[$index]);
$this->setDependencies($package, $dependencies);
}
}
}