ExerciseLib::exercise_time_control_is_valid()

Complexity

Conditions	9
Paths	11

Size

Total Lines	48
Code Lines	25

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

<?php
    public static function exercise_time_control_is_valid(Exercise $exercise, $lp_id = 0, $lp_item_id = 0)
    {
        $exercise_id = $exercise->getId();
        $expiredTime = $exercise->expired_time;

        // If the exercise has no time control configured, it's valid.
        if (empty($expiredTime)) {
            return true;
        }

        // Build a stable session key for the LP/exercise context
        $current_expired_time_key = self::get_time_control_key(
            $exercise_id,
            $lp_id,
            $lp_item_id
        );

        // If the key isn't present, time control cannot be validated -> not valid
        if (!isset($_SESSION['expired_time'][$current_expired_time_key])) {
            return false;
        }

        // Normalize the stored value (can be DateTime, unix timestamp, or string)
        $raw = $_SESSION['expired_time'][$current_expired_time_key];
        if ($raw instanceof \DateTimeInterface) {
            $expiredAtStr = $raw->format('Y-m-d H:i:s');
        } elseif (is_int($raw) || ctype_digit((string) $raw)) {
            // Treat numeric as unix timestamp (UTC)
            $expiredAtStr = gmdate('Y-m-d H:i:s', (int) $raw);
        } else {
            // Assume parsable datetime string
            $expiredAtStr = (string) $raw;
        }

        // Compute remaining time (defensive: handle parse failure as already expired)
        $expired_time = api_strtotime($expiredAtStr, 'UTC');
        if ($expired_time === false || $expired_time === null) {
            return false;
        }

        $current_time = time();
        $total_time_allowed = $expired_time + 30; // small grace period

        if ($total_time_allowed < $current_time) {
            return false;
        }

        return true;
    }