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<?php
/**
* Creates the neccessary tables for the files search index.
*
* @author <mlunzena@uos.de>
* @license GPL2 or any later version
*/
class AddFilesSearchIndex extends Migration
{
public function description()
{
return 'Sets up the database tables for the files search index';
}
/**
* @SuppressWarnings(PHPMD.ShortMethodName)
*/
public function up()
{
$this->createTables();
if ($this->registerWidgets()) {
$this->setupDefaultWidgets();
}
$this->installCronjob();
}
public function down()
{
$dbm = \DBManager::get();
$dbm->execute('DROP TABLE `files_search_index`, `files_search_attributes`');
}
// Get version of database system (MySQL/MariaDB/Percona)
private static function isMySQL55()
{
$data = \DBManager::get()->fetchFirst("SELECT VERSION() AS version");
$version = $data[0];
return version_compare($version, '5.6', '<');
}
// The primary key is named FTS_DOC_ID according to
// https://dev.mysql.com/doc/refman/5.6/en/innodb-fulltext-index.html
private function createTables()
{
$engine = self::isMySQL55() ? 'MyISAM' : 'InnoDB';
$dbm = \DBManager::get();
$dbm->execute(
'CREATE TABLE IF NOT EXISTS `files_search_index` (
`file_ref_id` varchar(32) CHARACTER SET latin1 COLLATE latin1_bin NOT NULL,
`text` text COLLATE utf8mb4_unicode_ci NOT NULL,
`relevance` float NOT NULL,
KEY `file_ref_id` (`file_ref_id`),
FULLTEXT KEY `text` (`text`)
) ENGINE=' . $engine . ' DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci ROW_FORMAT=DYNAMIC'
);
$dbm->execute('
CREATE TABLE IF NOT EXISTS `files_search_attributes` (
`id` char(32) CHARACTER SET latin1 COLLATE latin1_bin NOT NULL,
`file_ref_user_id` char(32) CHARACTER SET latin1 COLLATE latin1_bin NOT NULL,
`file_ref_mkdate` int(10) unsigned NOT NULL,
`file_ref_chdate` int(10) unsigned NOT NULL,
`folder_id` char(32) CHARACTER SET latin1 COLLATE latin1_bin NOT NULL,
`folder_range_id` char(32) CHARACTER SET latin1 COLLATE latin1_bin NOT NULL,
`folder_range_type` char(32) CHARACTER SET latin1 COLLATE latin1_bin NOT NULL,
`folder_type` varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
`course_status` tinyint(4) unsigned DEFAULT NULL,
`semester_start` int(20) unsigned DEFAULT NULL,
`semester_end` int(20) unsigned DEFAULT NULL,
PRIMARY KEY (`id`),
KEY `folder_range_id` (`folder_range_id`),
KEY `folder_range_type` (`folder_range_type`),
KEY `semester_start` (`semester_start`),
KEY `semester_end` (`semester_end`)
) ENGINE=' . $engine . ' DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci ROW_FORMAT=DYNAMIC
');
}
private function registerWidgets()
{
$widgets = [
'app/widgets/files_dashboard/MyPublicFilesWidget.php' => 'Widgets\\FilesDashboard\\MyPublicFilesWidget',
'app/widgets/files_dashboard/LatestFilesWidget.php' => 'Widgets\\FilesDashboard\\LatestFilesWidget'
];
foreach ($widgets as $path => $class) {
if (!file_exists($path)) {
return false;
}
require $path;
\Widgets\Widget::registerWidget(new $class());
}
return true;
}
private function setupDefaultWidgets()
{
$widgets = [
'Widgets\\FilesDashboard\\LatestFilesWidget' => ['width' => 3, 'height' => 3],
'Widgets\\FilesDashboard\\MyPublicFilesWidget' => ['width' => 3, 'height' => 3],
];
foreach (['user', 'autor', 'tutor', 'dozent', 'admin', 'root'] as $perm) {
$this->createDefaultContainer('user', $perm, 'dashboard', $widgets);
}
}
private function createDefaultContainer($rangeType, $rangeId, $scope, array $widgets)
{
$containerId = $this->createNewContainer($rangeType, $rangeId, $scope);
$xCoord = 0;
$yCoord = 0;
$yMax = 0;
foreach ($widgets as $class => $additional) {
$this->addWidgetToContainerByClass($containerId, $class, array_merge([
'x' => $xCoord,
'y' => $yCoord,
], $additional));
$yMax = max($yMax, $additional['height'] ?: 1);
$xCoord += $additional['width'];
if ($xCoord >= 6) {
$xCoord = 0;
$yCoord += $yMax;
$yMax = 0;
}
}
}
private function createNewContainer($rangeType, $rangeId, $scope)
{
$query = 'INSERT INTO `widget_containers` (
`range_id`, `range_type`, `scope`,
`mkdate`, `chdate`
) VALUES (
:id, :type, :scope,
UNIX_TIMESTAMP(), UNIX_TIMESTAMP()
)';
$statement = \DBManager::get()->prepare($query);
$statement->bindValue(':id', $rangeId);
$statement->bindValue(':type', $rangeType);
$statement->bindValue(':scope', $scope);
$statement->execute();
return \DBManager::get()->lastInsertId();
}
/**
* @SuppressWarnings(PHPMD.NPathComplexity)
*/
private function addWidgetToContainerByClass($containerId, $widgetClass, array $data = [])
{
$query = "INSERT INTO `widget_elements` (
`container_id`, `widget_id`,
`x`, `y`, `width`, `height`,
`locked`, `removable`, `options`,
`mkdate`, `chdate`
)
SELECT :container_id, `widget_id`,
:x, :y, :width, :height,
1, 0, '[]',
UNIX_TIMESTAMP(), UNIX_TIMESTAMP()
FROM `widgets`
WHERE `class` = :class";
$statement = \DBManager::get()->prepare($query);
$statement->bindValue(':container_id', $containerId);
$statement->bindValue(':x', $data['x'] ?: 0);
$statement->bindValue(':y', $data['y'] ?: 0);
$statement->bindValue(':width', $data['width'] ?: 1);
$statement->bindValue(':height', $data['height'] ?: 1);
$statement->bindValue(':class', $widgetClass);
$statement->execute();
}
private function installCronjob()
{
require_once 'lib/classes/FilesSearch/Cronjob.php';
\FilesSearch\Cronjob::register()->schedule(55, 0)->activate(true);
}
}
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