Completed
Pull Request — master (#141)
by
unknown
14:59
created

TicketStatusListener::onFlush()   C

Complexity

Conditions 11
Paths 18

Size

Total Lines 49
Code Lines 26

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
cc 11
eloc 26
c 0
b 0
f 0
nc 18
nop 1
dl 0
loc 49
rs 5.2653

How to fix   Complexity   

Long Method

Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.

For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.

Commonly applied refactorings include:

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<?php
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namespace AppBundle\EventListener;
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use AppBundle\Entity\CustomerOrder;
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use AppBundle\Entity\Ticket;
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use AppBundle\Exception\TicketStatusConflictException;
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use Doctrine\ORM\Event\OnFlushEventArgs;
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use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
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class TicketStatusListener
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{
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    protected $tokenStorage;
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    public function __construct(TokenStorageInterface $tokenStorage)
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    {
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        $this->tokenStorage = $tokenStorage;
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    }
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    public function onFlush(OnFlushEventArgs $args)
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    {
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        $em = $args->getEntityManager();
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        $uow = $em->getUnitOfWork();
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        foreach ($uow->getScheduledEntityUpdates() as $entity) {
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            if (!$entity instanceof Ticket) {
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                return;
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            }
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            if (!key_exists('status', $uow->getEntityChangeSet($entity))) {
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                return;
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            }
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            $ticket = $entity;
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        }
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        $oldStatus = $uow->getEntityChangeSet($ticket)['status'][0];
0 ignored issues
show
Bug introduced by
The variable $ticket does not seem to be defined for all execution paths leading up to this point.

If you define a variable conditionally, it can happen that it is not defined for all execution paths.

Let’s take a look at an example:

function myFunction($a) {
    switch ($a) {
        case 'foo':
            $x = 1;
            break;

        case 'bar':
            $x = 2;
            break;
    }

    // $x is potentially undefined here.
    echo $x;
}

In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined.

Available Fixes

  1. Check for existence of the variable explicitly:

    function myFunction($a) {
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
        }
    
        if (isset($x)) { // Make sure it's always set.
            echo $x;
        }
    }
    
  2. Define a default value for the variable:

    function myFunction($a) {
        $x = ''; // Set a default which gets overridden for certain paths.
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
        }
    
        echo $x;
    }
    
  3. Add a value for the missing path:

    function myFunction($a) {
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
    
            // We add support for the missing case.
            default:
                $x = '';
                break;
        }
    
        echo $x;
    }
    
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        $newStatus = $uow->getEntityChangeSet($ticket)['status'][1];
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        if (!in_array($newStatus, Ticket::getStatuses())) {
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            throw new \InvalidArgumentException("Invalid ticket status");
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        }
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        if ($oldStatus === Ticket::STATUS_PAID) {
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            throw new TicketStatusConflictException("Invalid status. Ticket already paid.");
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        }
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        $user = $this->tokenStorage->getToken()->getUser();
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        /** @var CustomerOrder $order */
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        $order = $em->getRepository('AppBundle:CustomerOrder')->findOpenedCustomerOrder($user);
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        /**
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         * Creating order if isn't exist
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         */
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        if (!$order) {
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            $order = new CustomerOrder($user);
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            $ticketMetadata = $em->getClassMetadata(CustomerOrder::class);
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            $em->persist($order);
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            $uow->computeChangeSet($ticketMetadata, $order);
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        }
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        if ($oldStatus === Ticket::STATUS_FREE && $newStatus === Ticket::STATUS_BOOKED) {
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            $ticket->setCustomerOrder($order);
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        } elseif ($oldStatus === Ticket::STATUS_BOOKED && $newStatus === Ticket::STATUS_FREE) {
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            $ticket->setCustomerOrder(null);
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        }
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    }
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}
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