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<?php |
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namespace MessageApp; |
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use League\Tactician\CommandBus; |
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use League\Tactician\Plugins\NamedCommand\NamedCommand; |
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use MessageApp\Message\MessageFactory; |
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use MessageApp\Message\Sender\MessageSender; |
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use MessageApp\Parser\Exception\MessageParserException; |
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use MessageApp\Parser\MessageParser; |
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use MessageApp\User\UndefinedApplicationUser; |
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use Psr\Log\LoggerAwareInterface; |
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use Psr\Log\LoggerAwareTrait; |
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use Psr\Log\NullLogger; |
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class MessageApplication implements LoggerAwareInterface |
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{ |
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use LoggerAwareTrait; |
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/** |
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* @var MessageSender |
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*/ |
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protected $messageSender; |
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/** |
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* @var MessageParser |
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*/ |
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protected $messageParser; |
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/** |
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* @var MessageFactory |
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*/ |
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private $messageFactory; |
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/** |
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* @var CommandBus |
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*/ |
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protected $commandBus; |
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/** |
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* Constructor |
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* |
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* @param MessageSender $messageSender |
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* @param MessageParser $messageParser |
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* @param MessageFactory $messageFactory |
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* @param CommandBus $commandBus |
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*/ |
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public function __construct( |
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MessageSender $messageSender, |
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MessageParser $messageParser, |
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MessageFactory $messageFactory, |
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CommandBus $commandBus |
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) { |
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$this->messageSender = $messageSender; |
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$this->messageParser = $messageParser; |
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$this->messageFactory = $messageFactory; |
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$this->commandBus = $commandBus; |
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$this->logger = new NullLogger(); |
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} |
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/** |
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* Handle a message |
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* |
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* @param mixed $message |
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* @return void |
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*/ |
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public function handle($message) |
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{ |
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$this->logger->info($message); |
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$command = $this->parseMessage($message); |
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$this->handleCommand($command); |
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} |
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/** |
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* Parse the message |
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* |
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* @param mixed $message |
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* @return NamedCommand |
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*/ |
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private function parseMessage($message) |
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{ |
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try { |
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return $this->messageParser->parse($message); |
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} catch (MessageParserException $e) { |
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$this->logger->error('Error parsing or executing command', ['exception' => $e->getMessage()]); |
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$errorMessage = $this->messageFactory->buildMessage( |
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[ $this->getMessageUser($e) ], |
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$e |
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); |
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if (!$errorMessage) { |
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$this->logger->warning('Message could not be generated'); |
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return null; |
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} |
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$this->messageSender->send($errorMessage, $message); |
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return null; |
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} |
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} |
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/** |
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* Handles the command |
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* |
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* @param NamedCommand $command |
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*/ |
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private function handleCommand(NamedCommand $command = null) |
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{ |
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if ($command === null) { |
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$this->logger->info('Message ignored'); |
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return; |
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} |
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$this->commandBus->handle($command); |
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} |
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/** |
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* @param MessageParserException $exception |
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* |
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* @return UndefinedApplicationUser |
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*/ |
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private function getMessageUser(MessageParserException $exception) |
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{ |
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return new UndefinedApplicationUser($exception->getUser()->getAccount()); |
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} |
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} |
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remi-san /
message-app
