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| 1 | <?php |
| 2 | // This file is part of Moodle - https://moodle.org/ |
| 3 | // |
| 4 | // Moodle is free software: you can redistribute it and/or modify |
| 5 | // it under the terms of the GNU General Public License as published by |
| 6 | // the Free Software Foundation, either version 3 of the License, or |
| 7 | // (at your option) any later version. |
| 8 | // |
| 9 | // Moodle is distributed in the hope that it will be useful, |
| 10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | // GNU General Public License for more details. |
| 13 | // |
| 14 | // You should have received a copy of the GNU General Public License |
| 15 | // along with Moodle. If not, see <https://www.gnu.org/licenses/>. |
| 16 | |
| 17 | namespace local_recertify\local; |
| 18 | |
| 19 | use cm_info; |
| 20 | use grade_grade; |
| 21 | use grade_item; |
| 22 | use moodle_exception; |
| 23 | |
| 24 | /** |
| 25 | * Resets one learner's progress in a course so they can certify again, after archiving it. |
| 26 | * |
| 27 | * Clearing completion alone is not enough: Moodle recomputes activity completion from the |
| 28 | * module's own data (grades, quiz attempts, SCORM tracks) the next time the learner opens the |
| 29 | * activity, and the old completion comes straight back. So the reset removes the data completion |
| 30 | * is computed from, through each module's own API, after copying it into the history table. |
| 31 | * |
| 32 | * Covered: activity and course completion, "viewed" records, gradebook grades, quiz attempts and |
| 33 | * SCORM attempts. Assignment submissions are not reset yet. |
| 34 | * |
| 35 | * @package local_recertify |
| 36 | * @copyright 2026 DevLMS <contact@devlms.com> |
| 37 | * @license https://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later |
| 38 | */ |
| 39 | final class resetter { |
| 40 | /** |
| 41 | * Archive and reset a learner who completed the course. |
| 42 | * |
| 43 | * @param int $courseid |
| 44 | * @param int $userid |
| 45 | * @return int The history row id. |
| 46 | */ |
| 47 | public static function reset(int $courseid, int $userid): int { |
| 48 | global $CFG, $DB; |
| 49 | require_once($CFG->libdir . '/gradelib.php'); |
| 50 | require_once($CFG->libdir . '/completionlib.php'); |
| 51 | require_once($CFG->dirroot . '/mod/quiz/locallib.php'); |
| 52 | require_once($CFG->dirroot . '/mod/scorm/locallib.php'); |
| 53 | |
| 54 | $timecompleted = (int) $DB->get_field( |
| 55 | 'course_completions', |
| 56 | 'timecompleted', |
| 57 | ['userid' => $userid, 'course' => $courseid] |
| 58 | ); |
| 59 | if (!$timecompleted) { |
| 60 | throw new moodle_exception('error:notcompleted', 'local_recertify'); |
| 61 | } |
| 62 | $modinfo = get_fast_modinfo($courseid); |
| 63 | [$archive, $finalgrade] = self::snapshot($courseid, $userid, $modinfo); |
| 64 | |
| 65 | $transaction = $DB->start_delegated_transaction(); |
| 66 | $historyid = (int) $DB->insert_record('local_recertify_history', (object) [ |
| 67 | 'courseid' => $courseid, |
| 68 | 'userid' => $userid, |
| 69 | 'timecompleted' => $timecompleted, |
| 70 | 'timeexpired' => time(), |
| 71 | 'finalgrade' => $finalgrade, |
| 72 | 'archive' => json_encode($archive), |
| 73 | ]); |
| 74 | |
| 75 | foreach ($modinfo->get_instances_of('quiz') as $cm) { |
| 76 | $quiz = $DB->get_record('quiz', ['id' => $cm->instance], '*', MUST_EXIST); |
| 77 | $quiz->cmid = $cm->id; |
| 78 | foreach ($DB->get_records('quiz_attempts', ['quiz' => $quiz->id, 'userid' => $userid]) as $attempt) { |
| 79 | quiz_delete_attempt($attempt, $quiz); |
| 80 | } |
| 81 | } |
| 82 | foreach ($modinfo->get_instances_of('scorm') as $cm) { |
| 83 | $scorm = $DB->get_record('scorm', ['id' => $cm->instance], '*', MUST_EXIST); |
| 84 | foreach ($DB->get_records('scorm_attempt', ['scormid' => $scorm->id, 'userid' => $userid]) as $attempt) { |
| 85 | scorm_delete_attempt($userid, $scorm, $attempt); |
| 86 | } |
| 87 | } |
| 88 | // Every grade in the course, the course total included, through the grade API so the gradebook |
| 89 | // history records who removed it. |
| 90 | foreach (grade_item::fetch_all(['courseid' => $courseid]) ?: [] as $item) { |
| 91 | if ($grade = grade_grade::fetch(['itemid' => $item->id, 'userid' => $userid])) { |
| 92 | $grade->delete('local_recertify'); |
| 93 | } |
| 94 | if ($item->is_course_item()) { |
| 95 | $item->force_regrading(); |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | $cmsql = 'coursemoduleid IN (SELECT id FROM {course_modules} WHERE course = :courseid) AND userid = :userid'; |
| 100 | $params = ['courseid' => $courseid, 'userid' => $userid]; |
| 101 | $DB->delete_records_select('course_modules_completion', $cmsql, $params); |
| 102 | $DB->delete_records_select('course_modules_viewed', $cmsql, $params); |
| 103 | $DB->delete_records('course_completion_crit_compl', ['course' => $courseid, 'userid' => $userid]); |
| 104 | $DB->delete_records('course_completions', ['course' => $courseid, 'userid' => $userid]); |
| 105 | $transaction->allow_commit(); |
| 106 | |
| 107 | \cache::make('core', 'completion')->delete($userid . '_' . $courseid); |
| 108 | \cache::make('core', 'coursecompletion')->delete($userid . '_' . $courseid); |
| 109 | return $historyid; |
| 110 | } |
| 111 | |
| 112 | /** |
| 113 | * Copy everything the reset removes. |
| 114 | * |
| 115 | * @param int $courseid |
| 116 | * @param int $userid |
| 117 | * @param \course_modinfo $modinfo |
| 118 | * @return array [archive, course total or null] |
| 119 | */ |
| 120 | private static function snapshot(int $courseid, int $userid, \course_modinfo $modinfo): array { |
| 121 | global $DB; |
| 122 | $archive = ['completion' => [], 'grades' => [], 'quiz' => [], 'scorm' => []]; |
| 123 | $rows = $DB->get_records_sql( |
| 124 | 'SELECT cmc.coursemoduleid, cmc.completionstate |
| 125 | FROM {course_modules_completion} cmc |
| 126 | JOIN {course_modules} cm ON cm.id = cmc.coursemoduleid |
| 127 | WHERE cm.course = ? AND cmc.userid = ?', |
| 128 | [$courseid, $userid] |
| 129 | ); |
| 130 | foreach ($rows as $row) { |
| 131 | $archive['completion'][$row->coursemoduleid] = (int) $row->completionstate; |
| 132 | } |
| 133 | |
| 134 | $finalgrade = null; |
| 135 | foreach (grade_item::fetch_all(['courseid' => $courseid]) ?: [] as $item) { |
| 136 | $grade = grade_grade::fetch(['itemid' => $item->id, 'userid' => $userid]); |
| 137 | if (!$grade || $grade->finalgrade === null) { |
| 138 | continue; |
| 139 | } |
| 140 | if ($item->is_course_item()) { |
| 141 | $finalgrade = (float) $grade->finalgrade; |
| 142 | } else if ($item->itemtype === 'mod' && isset($modinfo->instances[$item->itemmodule][$item->iteminstance])) { |
| 143 | $cm = $modinfo->instances[$item->itemmodule][$item->iteminstance]; |
| 144 | $archive['grades'][$cm->id] = (float) $grade->finalgrade; |
| 145 | } |
| 146 | } |
| 147 | |
| 148 | foreach ($modinfo->get_instances_of('quiz') as $cm) { |
| 149 | $attempts = $DB->get_records('quiz_attempts', ['quiz' => $cm->instance, 'userid' => $userid], 'attempt'); |
| 150 | foreach ($attempts as $attempt) { |
| 151 | $archive['quiz'][$cm->id][] = [ |
| 152 | 'attempt' => (int) $attempt->attempt, |
| 153 | 'state' => $attempt->state, |
| 154 | 'sumgrades' => $attempt->sumgrades === null ? null : (float) $attempt->sumgrades, |
| 155 | 'timestart' => (int) $attempt->timestart, |
| 156 | 'timefinish' => (int) $attempt->timefinish, |
| 157 | ]; |
| 158 | } |
| 159 | } |
| 160 | foreach ($modinfo->get_instances_of('scorm') as $cm) { |
| 161 | self::snapshot_scorm($cm, $userid, $archive); |
| 162 | } |
| 163 | return [$archive, $finalgrade]; |
| 164 | } |
| 165 | |
| 166 | /** |
| 167 | * Copy a learner's SCORM tracking values, by attempt and by SCO. |
| 168 | * |
| 169 | * @param cm_info $cm |
| 170 | * @param int $userid |
| 171 | * @param array $archive |
| 172 | */ |
| 173 | private static function snapshot_scorm(cm_info $cm, int $userid, array &$archive): void { |
| 174 | global $DB; |
| 175 | foreach ($DB->get_records('scorm_attempt', ['scormid' => $cm->instance, 'userid' => $userid], 'attempt') as $attempt) { |
| 176 | $scos = []; |
| 177 | $values = $DB->get_recordset_sql( |
| 178 | 'SELECT v.id, v.scoid, e.element, v.value |
| 179 | FROM {scorm_scoes_value} v |
| 180 | JOIN {scorm_element} e ON e.id = v.elementid |
| 181 | WHERE v.attemptid = ?', |
| 182 | [$attempt->id] |
| 183 | ); |
| 184 | foreach ($values as $value) { |
| 185 | $scos[$value->scoid][$value->element] = $value->value; |
| 186 | } |
| 187 | $values->close(); |
| 188 | $archive['scorm'][$cm->id][] = ['attempt' => (int) $attempt->attempt, 'scos' => $scos]; |
| 189 | } |
| 190 | } |
| 191 | } |