<?php

namespace WorkflowBundle\Services;

use OldSound\RabbitMqBundle\RabbitMq\ConsumerInterface;
use PhpAmqpLib\Message\AMQPMessage;
use Symfony\Component\Process\Process;
use Symfony\Component\DependencyInjection\ContainerInterface;

class TaskLoggerService implements ConsumerInterface
{

    /**
     * Directorio donde se guardan los script
     */
    const TASKLOGGER_PATH = '/tmp/tasklogger';


    /**
     * @var ContainerInterface
     */
    protected $serviceContainer;


    /**
     * @param ContainerInterface $serviceContainer
     */
    public function __construct(ContainerInterface $serviceContainer)
    {
        $this->serviceContainer = $serviceContainer;
    }

    /**
     * $msg will be an instance of `PhpAmqpLib\Message\AMQPMessage` 
     * with the $msg->body being the data sent over RabbitMQ.
     * 
     * @param AMQPMessage $msg
     */
    public function execute(AMQPMessage $msg)
    {
        $msgBody = unserialize($msg->getBody());
        if (isset($msgBody['id']) && isset($msgBody['content'])) {
            $taskloggerId = $msgBody['id'];
            $content = $msgBody['content'];

            $filename = $this->createTaskLoggerCmdFile($taskloggerId, $content);
            $output = $this->runProcess($filename);
            
            $monologLoggerId = 'monolog.logger.devicelog';
            if ($this->serviceContainer->has($monologLoggerId)) {
                $this->serviceContainer->get($monologLoggerId)->info($output['output'], [
                    'deviceType' => $msgBody['entityClass'],
                    'deviceId' => $msgBody['entityId'],
                ]);
            }
            
            var_export($output);

            return true;
        }

        return false;
    }

    /**
     * @param string $taskloggerId
     * @param string $data
     * 
     * @return string
     */
    public function createTaskLoggerCmdFile($taskloggerId, $data)
    {
        $mode = 0777;
        $tasklogger_dir = self::TASKLOGGER_PATH . DIRECTORY_SEPARATOR . $taskloggerId;
        if (!file_exists($tasklogger_dir)) {
            mkdir($tasklogger_dir, $mode, true);
        }

        $filename = $tasklogger_dir . DIRECTORY_SEPARATOR . 'cmd.sh';
        file_put_contents($filename, $data);
        chmod($filename, $mode);

        return $filename;
    }

    /**
     * @param string $filename
     * 
     * @return array
     */
    public function runProcess($filename)
    {
        $process = new Process($filename);
        $process->run();

        return array(
            'output' => $process->getOutput(),
            'error' => $process->getErrorOutput(),
            'exit_code' => $process->getExitCode(),
        );
    }

}