/**
* Method to run before an install/update/uninstall method
*
* @param object $type type of change (install, update or discover_install)
* @param JInstallerAdapter $parent class calling this method
*
* @return bool
*/
public function preflight($type, $parent)
{
$this->installRedcore($type, $parent);
$this->loadRedcoreLibrary();
$this->loadRedcoreLanguage();
$manifest = $this->getManifest($parent);
$extensionType = $manifest->attributes()->type;
$this->extensionElement = $this->getElement($parent, $manifest);
if ($extensionType == 'component' && in_array($type, array('install', 'update', 'discover_install'))) {
// Update SQL pre-processing
if ($type == 'update') {
// Reads current (old) version from manifest
$db = JFactory::getDbo();
$version = $db->setQuery($db->getQuery(true)->select($db->qn('s.version_id'))->from($db->qn('#__schemas', 's'))->join('inner', $db->qn('#__extensions', 'e') . ' ON ' . $db->qn('e.extension_id') . ' = ' . $db->qn('s.extension_id'))->where('e.element = ' . $db->q($this->extensionElement)))->loadResult();
if (!empty($version)) {
$this->oldVersion = (string) $version;
}
if (!$this->preprocessUpdates($parent)) {
return false;
}
}
// In case we are installing redcore
if (get_called_class() == 'Com_RedcoreInstallerScript') {
if (!$this->checkComponentVersion($this->getRedcoreComponentFolder(), dirname(__FILE__), 'redcore.xml')) {
JFactory::getApplication()->enqueueMessage(JText::_('COM_REDCORE_INSTALL_ERROR_OLDER_VERSION'), 'error');
return false;
}
if (!class_exists('RComponentHelper')) {
$searchPaths = array(JPATH_LIBRARIES . '/redcore/component', dirname(__FILE__) . '/redCORE/libraries/redcore/component', dirname(__FILE__) . '/libraries/redcore/component');
if ($componentHelper = JPath::find($searchPaths, 'helper.php')) {
require_once $componentHelper;
}
}
}
$requirements = array();
if (method_exists('RComponentHelper', 'checkComponentRequirements')) {
$requirements = RComponentHelper::checkComponentRequirements($manifest->requirements);
}
if (!empty($requirements)) {
foreach ($requirements as $key => $requirement) {
foreach ($requirement as $checked) {
if (!$checked['status']) {
// In case redCORE cannot be installed we do not have the language string
if (get_called_class() == 'Com_RedcoreInstallerScript') {
$this->loadRedcoreLanguage(dirname(__FILE__));
$checked['name'] = JText::_($checked['name']);
}
$messageKey = $key == 'extensions' ? 'COM_REDCORE_INSTALL_ERROR_REQUIREMENTS_EXTENSIONS' : 'COM_REDCORE_INSTALL_ERROR_REQUIREMENTS';
JFactory::getApplication()->enqueueMessage(JText::sprintf($messageKey, $checked['name'], $checked['required'], $checked['current']), 'error');
return false;
}
}
}
}
}
return true;
}
