guard_clauses_02.php

guard_clauses_02.php

<?php 

public function unlock($orderId, $userId)
{
    $redis = $this->app['cache'];

    if (empty($this->type) || empty($orderId) || !in_array($this->type, $this->availableType)) {
        throw new LockException("Missing/Invalid parameters. Can't unlock for type: " . $this->type . " with id: " . $orderId);
    }

    $result = $redis->hGet(sprintf(self::REDIS_CACHE_TEMPORARY_LOCK, $this->type), $orderId);
    if (!empty($result)) {
        // lock if it's the same user who try to unlock
        $data = json_decode($result, true);
        if ($userId == $data['user']['id']) {
            $result = $redis->hDel(sprintf(self::REDIS_CACHE_TEMPORARY_LOCK, $this->type), $orderId);
            if ($result == true) {
                return true;
            } else {
                throw new LockException("Unlock failed. Please try again");
            }
        } else {
            throw new LockException("Unlock failed. You can't unlock something that isn't yours");
        }
    } else {
        throw new LockException("This order wasn't locked. Can't unlock");
    }
}