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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_finalgrades\local; |
| 18 | |
| 19 | use moodle_exception; |
| 20 | use stdClass; |
| 21 | |
| 22 | defined('MOODLE_INTERNAL') || die(); |
| 23 | |
| 24 | global $CFG; |
| 25 | require_once($CFG->libdir . '/gradelib.php'); |
| 26 | |
| 27 | /** |
| 28 | * Submitting, withdrawing, approving and returning a course's final grades. |
| 29 | * |
| 30 | * A submission stores what the teacher saw (course total, percentage, letter, ID numbers) and locks the |
| 31 | * student's course total in the gradebook, so later item changes cannot move it. Withdrawn and returned rows |
| 32 | * stay as history; the current submission is the latest submitted or approved row. |
| 33 | * |
| 34 | * @package local_finalgrades |
| 35 | * @copyright 2026 DevLMS <contact@devlms.com> |
| 36 | * @license https://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later |
| 37 | */ |
| 38 | class submission { |
| 39 | /** Submitted by the teacher. */ |
| 40 | public const SUBMITTED = 'submitted'; |
| 41 | /** Approved, when approval is required. */ |
| 42 | public const APPROVED = 'approved'; |
| 43 | /** Sent back to the teacher by an approver. */ |
| 44 | public const RETURNED = 'returned'; |
| 45 | /** Taken back by the teacher. */ |
| 46 | public const WITHDRAWN = 'withdrawn'; |
| 47 | /** Statuses that hold the gradebook total. */ |
| 48 | public const CURRENT = [self::SUBMITTED, self::APPROVED]; |
| 49 | |
| 50 | /** |
| 51 | * The course's students: active enrolments in a gradebook role, by last name. |
| 52 | * |
| 53 | * @param int $courseid |
| 54 | * @return stdClass[] User records keyed by id. |
| 55 | */ |
| 56 | public static function students(int $courseid): array { |
| 57 | global $CFG, $DB; |
| 58 | $context = \context_course::instance($courseid); |
| 59 | $roles = array_filter(explode(',', (string) $CFG->gradebookroles)); |
| 60 | if (!$roles) { |
| 61 | return []; |
| 62 | } |
| 63 | [$in, $params] = $DB->get_in_or_equal(array_map('intval', $roles), SQL_PARAMS_NAMED, 'role'); |
| 64 | [$enrolsql, $enrolparams] = get_enrolled_sql($context, '', 0, true); |
| 65 | $names = implode(', ', array_map(fn($f) => "u.$f", \core_user\fields::get_name_fields())); |
| 66 | $sql = "SELECT u.id, u.idnumber, u.email, u.username, $names |
| 67 | FROM {user} u |
| 68 | JOIN ($enrolsql) je ON je.id = u.id |
| 69 | WHERE u.deleted = 0 |
| 70 | AND EXISTS (SELECT 1 FROM {role_assignments} ra |
| 71 | WHERE ra.userid = u.id AND ra.contextid = :contextid AND ra.roleid $in) |
| 72 | ORDER BY u.lastname, u.firstname, u.id"; |
| 73 | return $DB->get_records_sql($sql, $params + $enrolparams + ['contextid' => $context->id]); |
| 74 | } |
| 75 | |
| 76 | /** |
| 77 | * The course total grade of a student, refreshed. |
| 78 | * |
| 79 | * @param int $courseid |
| 80 | * @param int $userid |
| 81 | * @return \grade_grade|null Null when the course has no total yet. |
| 82 | */ |
| 83 | public static function total(int $courseid, int $userid): ?\grade_grade { |
| 84 | $item = \grade_item::fetch_course_item($courseid); |
| 85 | $grade = \grade_grade::fetch(['itemid' => $item->id, 'userid' => $userid]); |
| 86 | if (!$grade) { |
| 87 | return null; |
| 88 | } |
| 89 | $grade->grade_item = $item; |
| 90 | return $grade; |
| 91 | } |
| 92 | |
| 93 | /** |
| 94 | * The student's current submission: the latest one that is submitted or approved. |
| 95 | * |
| 96 | * @param int $courseid |
| 97 | * @param int $userid |
| 98 | * @return stdClass|null |
| 99 | */ |
| 100 | public static function current(int $courseid, int $userid): ?stdClass { |
| 101 | global $DB; |
| 102 | [$in, $params] = $DB->get_in_or_equal(self::CURRENT, SQL_PARAMS_NAMED); |
| 103 | $rows = $DB->get_records_select( |
| 104 | 'local_finalgrades_sub', |
| 105 | "courseid = :courseid AND userid = :userid AND status $in", |
| 106 | $params + ['courseid' => $courseid, 'userid' => $userid], |
| 107 | 'id DESC', |
| 108 | '*', |
| 109 | 0, |
| 110 | 1 |
| 111 | ); |
| 112 | return $rows ? reset($rows) : null; |
| 113 | } |
| 114 | |
| 115 | /** |
| 116 | * Submit the course totals of these students and lock them in the gradebook. |
| 117 | * |
| 118 | * Students without a course total, already submitted, or not students of the course are skipped. |
| 119 | * |
| 120 | * @param stdClass $course |
| 121 | * @param int[] $userids |
| 122 | * @param int $by The teacher. |
| 123 | * @return int How many grades were submitted. |
| 124 | */ |
| 125 | public static function submit(stdClass $course, array $userids, int $by): int { |
| 126 | global $DB; |
| 127 | grade_regrade_final_grades($course->id); |
| 128 | $students = self::students($course->id); |
| 129 | $count = 0; |
| 130 | foreach (array_unique(array_map('intval', $userids)) as $userid) { |
| 131 | if (!isset($students[$userid]) || self::current($course->id, $userid)) { |
| 132 | continue; |
| 133 | } |
| 134 | $grade = self::total($course->id, $userid); |
| 135 | if (!$grade || $grade->finalgrade === null) { |
| 136 | continue; |
| 137 | } |
| 138 | $value = (float) $grade->finalgrade; |
| 139 | $id = $DB->insert_record('local_finalgrades_sub', (object) [ |
| 140 | 'courseid' => $course->id, |
| 141 | 'userid' => $userid, |
| 142 | 'grade' => $value, |
| 143 | 'percentage' => grade_format_gradevalue($value, $grade->grade_item, true, GRADE_DISPLAY_TYPE_PERCENTAGE), |
| 144 | 'letter' => grade_format_gradevalue($value, $grade->grade_item, true, GRADE_DISPLAY_TYPE_LETTER), |
| 145 | 'useridnumber' => $students[$userid]->idnumber, |
| 146 | 'courseidnumber' => $course->idnumber, |
| 147 | 'status' => self::SUBMITTED, |
| 148 | 'submittedby' => $by, |
| 149 | 'timesubmitted' => time(), |
| 150 | ]); |
| 151 | $grade->set_locked(1, false, false); |
| 152 | self::log('grade_submitted', $course->id, $id, $userid); |
| 153 | $count++; |
| 154 | } |
| 155 | return $count; |
| 156 | } |
| 157 | |
| 158 | /** |
| 159 | * Take back a submitted grade: unlock the total so it follows the gradebook again. |
| 160 | * |
| 161 | * @param stdClass $course |
| 162 | * @param int $userid |
| 163 | * @param string $reason Required, kept with the history. |
| 164 | * @param int $by |
| 165 | */ |
| 166 | public static function withdraw(stdClass $course, int $userid, string $reason, int $by): void { |
| 167 | $row = self::close($course->id, $userid, self::WITHDRAWN, $reason, $by); |
| 168 | self::log('grade_withdrawn', $course->id, $row->id, $userid, ['reason' => $row->reason]); |
| 169 | } |
| 170 | |
| 171 | /** |
| 172 | * Approve submitted grades. Approved grades keep the gradebook total locked. |
| 173 | * |
| 174 | * @param stdClass $course |
| 175 | * @param int[] $userids |
| 176 | * @param int $by The approver. |
| 177 | * @return int How many grades were approved. |
| 178 | */ |
| 179 | public static function approve(stdClass $course, array $userids, int $by): int { |
| 180 | global $DB; |
| 181 | $count = 0; |
| 182 | foreach (array_unique(array_map('intval', $userids)) as $userid) { |
| 183 | $row = self::current($course->id, $userid); |
| 184 | if (!$row || $row->status !== self::SUBMITTED) { |
| 185 | continue; |
| 186 | } |
| 187 | $DB->update_record('local_finalgrades_sub', (object) [ |
| 188 | 'id' => $row->id, |
| 189 | 'status' => self::APPROVED, |
| 190 | 'reviewedby' => $by, |
| 191 | 'timereviewed' => time(), |
| 192 | ]); |
| 193 | self::log('grade_approved', $course->id, $row->id, $userid); |
| 194 | $count++; |
| 195 | } |
| 196 | return $count; |
| 197 | } |
| 198 | |
| 199 | /** |
| 200 | * Send a submitted grade back to the teacher with a reason, and unlock the total. |
| 201 | * |
| 202 | * @param stdClass $course |
| 203 | * @param int $userid |
| 204 | * @param string $reason |
| 205 | * @param int $by The approver. |
| 206 | */ |
| 207 | public static function return_grade(stdClass $course, int $userid, string $reason, int $by): void { |
| 208 | $row = self::close($course->id, $userid, self::RETURNED, $reason, $by); |
| 209 | self::log('grade_returned', $course->id, $row->id, $userid, ['reason' => $row->reason]); |
| 210 | } |
| 211 | |
| 212 | /** |
| 213 | * Trigger one of this plugin's events about a student's grade. |
| 214 | * |
| 215 | * @param string $name Event class name. |
| 216 | * @param int $courseid |
| 217 | * @param int $rowid |
| 218 | * @param int $userid The student. |
| 219 | * @param array $other |
| 220 | */ |
| 221 | protected static function log(string $name, int $courseid, int $rowid, int $userid, array $other = []): void { |
| 222 | $class = '\\local_finalgrades\\event\\' . $name; |
| 223 | $class::create([ |
| 224 | 'context' => \context_course::instance($courseid), |
| 225 | 'objectid' => $rowid, |
| 226 | 'relateduserid' => $userid, |
| 227 | 'other' => $other, |
| 228 | ])->trigger(); |
| 229 | } |
| 230 | |
| 231 | /** |
| 232 | * Close the current submission with a status and a reason, and unlock the total. |
| 233 | * |
| 234 | * @param int $courseid |
| 235 | * @param int $userid |
| 236 | * @param string $status |
| 237 | * @param string $reason |
| 238 | * @param int $by |
| 239 | * @return stdClass The closed row. |
| 240 | */ |
| 241 | protected static function close(int $courseid, int $userid, string $status, string $reason, int $by): stdClass { |
| 242 | global $DB; |
| 243 | $row = self::current($courseid, $userid); |
| 244 | if (!$row) { |
| 245 | throw new moodle_exception('notsubmitted', 'local_finalgrades'); |
| 246 | } |
| 247 | $reason = trim($reason); |
| 248 | if ($reason === '') { |
| 249 | throw new moodle_exception('reasonrequired', 'local_finalgrades'); |
| 250 | } |
| 251 | $row->status = $status; |
| 252 | $row->reason = $reason; |
| 253 | $row->reviewedby = $by; |
| 254 | $row->timereviewed = time(); |
| 255 | $DB->update_record('local_finalgrades_sub', $row); |
| 256 | self::unlock($courseid, $userid); |
| 257 | return $row; |
| 258 | } |
| 259 | |
| 260 | /** |
| 261 | * Unlock a student's course total and let the gradebook recalculate it. |
| 262 | * |
| 263 | * @param int $courseid |
| 264 | * @param int $userid |
| 265 | */ |
| 266 | protected static function unlock(int $courseid, int $userid): void { |
| 267 | $grade = self::total($courseid, $userid); |
| 268 | if ($grade && $grade->is_locked()) { |
| 269 | $grade->set_locked(0, false, false); |
| 270 | $grade->grade_item->force_regrading(); |
| 271 | grade_regrade_final_grades($courseid); |
| 272 | } |
| 273 | } |
| 274 | } |