- // wvCanModify (weekViewCanModify) - determines if an already existing tt_log record
- // can be modified with a new user-provided duration.
- static function wvCanModify($tt_log_id, $new_duration, $err) {
- global $i18n;
- $mdb2 = getConnection();
-
- // Determine if we have start time in record, as further checking does not makes sense otherwise.
- $sql = "select user_id, date, start, duration from tt_log where id = $tt_log_id";
- $res = $mdb2->query($sql);
- if (!is_a($res, 'PEAR_Error')) {
- if (!$res->numRows()) {
- $err->add($i18n->getKey('error.db')); // This is not expected.
- return false;
- }
- $val = $res->fetchRow();
- $oldDuration = $val['duration'];
- if (!$val['start'])
- return true; // There is no start time in the record, therefore safe to modify.
- }
-
- // We do have start time.
- // Quick test if new duration is less then already existing.
- $newMinutes = ttTimeHelper::toMinutes($new_duration);
- $oldMinutes = ttTimeHelper::toMinutes($oldDuration);
- if ($newMinutes < $oldMinutes)
- return true; // Safe to modify.
-
- // Does the new duration put the record beyond 24:00 boundary?
- $startMinutes = ttTimeHelper::toMinutes($val['start']);
- $newEndMinutes = $startMinutes + $newMinutes;
- if ($newEndMinutes > 1440) {
- // Invalid duration, as new duration puts the record beyond current day.
- $err->add($i18n->getKey('error.field'), $i18n->getKey('label.duration'));
- return false;
- }
-
- // Does the new duration causes the record to overlap with others?
- $user_id = $val['user_id'];
- $date = $val['date'];
- $startMinutes = ttTimeHelper::toMinutes($val['start']);
- $start = ttTimeHelper::toAbsDuration($startMinutes);
- $finish = ttTimeHelper::toAbsDuration($newEndMinutes);
- if (ttTimeHelper::overlaps($user_id, $date, $start, $finish, $tt_log_id)) {
- $err->add($i18n->getKey('error.overlap'));
- return false;
- }
-
- return true; // There are no conflicts, safe to modify.
- }
-