Passed
Pull Request — master (#46)
by Baptiste
10:46
created

Echoer::dump()   B

Complexity

Conditions 4
Paths 5

Size

Total Lines 22
Code Lines 11

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
dl 0
loc 22
rs 8.9197
c 0
b 0
f 0
cc 4
eloc 11
nc 5
nop 2
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<?php declare(strict_types=1);
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namespace Behapi\Debug\Dumper\Request;
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use Psr\Http\Message\MessageInterface;
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use Psr\Http\Message\RequestInterface;
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use Behapi\Debug\Dumper;
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use Behapi\Debug\Dumper\UnsupportedMessage;
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final class Echoer implements Dumper
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{
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    // 1 - key
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    // 2 - value
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    private const TEMPLATE = "\033[36m| \033[1m%s : \033[0;36m%s\033[0m\n";
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    public function dump(MessageInterface $message, array $headers): void
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    {
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        if (!$this->supports($message)) {
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            throw new UnsupportedMessage($message, RequestInterface::class);
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        }
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        echo "\n";
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        printf(self::TEMPLATE, 'Request', "{$message->getMethod()} {$message->getUri()}");
0 ignored issues
show
Bug introduced by
It seems like you code against a concrete implementation and not the interface Psr\Http\Message\MessageInterface as the method getMethod() does only exist in the following implementations of said interface: Nyholm\Psr7\Request, Nyholm\Psr7\ServerRequest.

Let’s take a look at an example:

interface User
{
    /** @return string */
    public function getPassword();
}

class MyUser implements User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}

In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different implementation of User which does not have a getDisplayName() method, the code will break.

Available Fixes

  1. Change the type-hint for the parameter:

    class AuthSystem
    {
        public function authenticate(MyUser $user) { /* ... */ }
    }
    
  2. Add an additional type-check:

    class AuthSystem
    {
        public function authenticate(User $user)
        {
            if ($user instanceof MyUser) {
                $this->logger->info(/** ... */);
            }
    
            // or alternatively
            if ( ! $user instanceof MyUser) {
                throw new \LogicException(
                    '$user must be an instance of MyUser, '
                   .'other instances are not supported.'
                );
            }
    
        }
    }
    
Note: PHP Analyzer uses reverse abstract interpretation to narrow down the types inside the if block in such a case.
  1. Add the method to the interface:

    interface User
    {
        /** @return string */
        public function getPassword();
    
        /** @return string */
        public function getDisplayName();
    }
    
Loading history...
Bug introduced by
It seems like you code against a concrete implementation and not the interface Psr\Http\Message\MessageInterface as the method getUri() does only exist in the following implementations of said interface: Nyholm\Psr7\Request, Nyholm\Psr7\ServerRequest.

Let’s take a look at an example:

interface User
{
    /** @return string */
    public function getPassword();
}

class MyUser implements User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}

In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different implementation of User which does not have a getDisplayName() method, the code will break.

Available Fixes

  1. Change the type-hint for the parameter:

    class AuthSystem
    {
        public function authenticate(MyUser $user) { /* ... */ }
    }
    
  2. Add an additional type-check:

    class AuthSystem
    {
        public function authenticate(User $user)
        {
            if ($user instanceof MyUser) {
                $this->logger->info(/** ... */);
            }
    
            // or alternatively
            if ( ! $user instanceof MyUser) {
                throw new \LogicException(
                    '$user must be an instance of MyUser, '
                   .'other instances are not supported.'
                );
            }
    
        }
    }
    
Note: PHP Analyzer uses reverse abstract interpretation to narrow down the types inside the if block in such a case.
  1. Add the method to the interface:

    interface User
    {
        /** @return string */
        public function getPassword();
    
        /** @return string */
        public function getDisplayName();
    }
    
Loading history...
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        foreach ($headers as $header) {
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            printf(self::TEMPLATE, "Request {$header}", $message->getHeaderLine($header));
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        }
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        $body = (string) $message->getBody();
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        if (!empty($body)) {
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            echo "\n{$body}";
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        }
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        echo "\n";
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    }
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    public function supports(MessageInterface $message): bool
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    {
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        return $message instanceof RequestInterface;
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    }
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}
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