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111 lines
4.2 KiB
111 lines
4.2 KiB
<?php
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/* For licensing terms, see /license.txt */
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/**
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* This deletes courses that were created but no file was ever uploaded, and
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* that were created previous to a specific date and last used previous to
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* another specific date (see $creation and $access)
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* Use this script with caution, as it will completely remove any trace of the
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* deleted courses.
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* Please note that this is not written with the inclusion of the concept of
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* sessions. As such, it might delete courses but leave the course reference
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* in the session, which would cause issues.
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* Launch from the command line.
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* Usage: php delete_old_courses_even_not_empty.php
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*/
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exit;
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require_once '../../main/inc/global.inc.php';
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if (PHP_SAPI !== 'cli') {
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die('This script can only be executed from the command line');
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}
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echo PHP_EOL."Usage: php ".basename(__FILE__)." [options]".PHP_EOL;
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echo "Where [options] can be ".PHP_EOL;
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echo " -s Simulate execution - Do not delete anything, just show numbers".PHP_EOL.PHP_EOL;
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echo "Processing...".PHP_EOL.PHP_EOL;
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$simulate = false;
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if (!empty($argv[1]) && $argv[1] == '-s') {
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$simulate = true;
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echo "Simulation mode is enabled".PHP_EOL;
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}
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// The date before which the course must have been created to be considered
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$creation = '2022-08-31';
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// The last date at which the course must have been accessed to be considered.
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// If it was accessed *after* that date, it will NOT be considered for deletion.
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$access = '2022-08-31';
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$tableCourse = Database::get_main_table(TABLE_MAIN_COURSE);
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$tableAccess = Database::get_main_table(TABLE_STATISTIC_TRACK_E_COURSE_ACCESS);
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$tableUser = Database::get_main_table(TABLE_MAIN_USER);
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// Check based on accesses in track_e_course_access
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$sql2 = "SELECT t.c_id, UNIX_TIMESTAMP(MAX(t.login_course_date)) as last_visit
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FROM $tableAccess t, $tableUser u
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WHERE t.user_id = u.id
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AND t.user_id = u.id
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AND u.status = 5
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GROUP BY t.c_id";
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$result2 = Database::query($sql2);
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$items2 = Database::store_result($result2, 'ASSOC');
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$accessUnix = strtotime($access);
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$courses = [];
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foreach ($items2 as $item) {
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if ($accessUnix > $item['last_visit']) {
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// The course has not been accessed by students since $access
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$courses[$item['c_id']] = $item['last_visit'];
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}
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}
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$sql = "SELECT
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id, code, directory, creation_date
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FROM $tableCourse
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WHERE id IN (".implode(',', array_keys($courses)).")";
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$result = Database::query($sql);
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$items = Database::store_result($result, 'ASSOC');
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if ($simulate) {
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echo $sql.PHP_EOL;
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}
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echo "Found ".count($items)." courses matching the given dates.".PHP_EOL;
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$total = 0;
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$count = 0;
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if (!empty($items)) {
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foreach ($items as $item) {
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$size = exec('du -sh '.__DIR__.'/../../app/courses/'.$item['directory']);
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list($mysize, $mypath) = preg_split('/\t/', $size);
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$size = trim($mysize);
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echo "[$count] Course ".$item['code'].'('.$item['id'].') created on '.$item['creation_date'].' and last used on '.date('Y-m-d', $courses[$item['id']]).' uses '.$size.PHP_EOL;
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echo('rm -rf '.__DIR__.'/../../app/courses/'.$item['directory']).PHP_EOL;
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echo('rm -rf '.__DIR__.'/../../app/cache/'.$item['directory'].'_*').PHP_EOL;
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if (!$simulate) {
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CourseManager::delete_course($item['code']);
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// The normal procedure moves the course directory to archive, so
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// delete it there as well
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exec('rm -rf '.__DIR__.'/../../app/courses/'.$item['directory']);
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exec('rm -rf '.__DIR__.'/../../app/cache/'.$item['directory'].'_*');
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}
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// The normal procedure also created a database dump, but it is
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// stored in the course folder, so no issue there...
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$matches = [];
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preg_match('/^(\d+)(\D)$/', $size, $matches);
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switch($matches[2]) {
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case 'K':
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$total += $matches[1];
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break;
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case 'M':
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$total += $matches[1]*1024;
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break;
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case 'G':
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$total += $matches[1]*1024*1024;
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break;
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}
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$count ++;
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if ($count%100 == 0) {
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echo '### Until now: '.$total.'K in '.$count.' courses'.PHP_EOL;
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}
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}
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}
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echo round($total / (1024)).'MB in '.$count.' courses'.PHP_EOL;
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