<?php

namespace App\Command;

use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

use Doctrine\ORM\EntityManagerInterface;

use App\Service\MQTTClient;

use App\Entity\JobOrder;
use App\Entity\Rider;

use PDO;

class UpdateUnacceptedJobOrdersCommand extends Command
{
    protected $em;
    protected $mclient;

    public function __construct(EntityManagerInterface $em, MQTTClient $mclient)
    {
        $this->em = $em;
        $this->mclient = $mclient;

        parent::__construct();
    }

    protected function configure()
    {
        $this->setName('joborder:reassignunaccepted')
            ->setDescription('Requeue for rider assignment assigned but unaccepted job orders that have been assigned for more than 3 mins.')
            ->setHelp('Requeue for rider assignment  assigned but unaccepted job orders that have been assigned for more than 3 mins.');
    }

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $em = $this->em;
        $mclient = $this->mclient;

        // TODO: get the timeout limit from .env
        $timeout = 3;
        $current_status = 'assigned';
        $new_status = 'rider_assign';

        // pdo connection
        $db = $em->getConnection();

        // since we need the actual job orders for mqtt events, we need to get the ids of the job orders
        // that will be updated
        // need rider id to set rider to available since rider becomes unavailable 
        // the minute JO is assigned to rider
        $query_sql = 'SELECT id FROM job_order WHERE status = :current_status and TIMESTAMPDIFF(MINUTE, date_assign, NOW()) >= :timeout';

        $query_stmt = $db->prepare($query_sql);
        $query_stmt->execute([
            'current_status' => $current_status,
            'timeout' => $timeout,
        ]);

        // go through rows
        $requeued_jos = [];
        while ($row = $query_stmt->fetch(PDO::FETCH_NUM))
        {
            // $row[0] is the jo id
            // store the jos for now for the event sending after update of JOs
            // and the updating of rider's availability
            $jo_id = $row[0];

            $requeued_jo = $em->getRepository(JobOrder::class)->find($jo_id);

            $requeued_jos[] = [
                'jo' => $requeued_jo,
            ];

            $update_sql = 'UPDATE job_order SET status = :new_status, rider_id = null WHERE id = :jo_id';
            $update_stmt = $db->prepare($update_sql);
            $update_stmt->execute([
                'new_status' => $new_status,
                'jo_id' => $jo_id,
            ]);
        }

        foreach ($requeued_jos as $jo_info)
        {
            $jo = $jo_info['jo'];
            if ($jo != null)
            {
                $output->writeln('Requeuing for rider assignment ' . $jo->getID());
                $id = $jo->getID();

                // send notifications to rider app, telling rider that jo has been requeued
                $rider_payload = [
                    'event' => 'cancelled',
                    'reason' => 'Reassigned',
                    'jo_id' => $id,
                ];
                $mclient->sendRiderEvent($jo, $rider_payload);


                // send outlet assign since order should go back to hub and await reassignment to another rider
                $payload = [
                    'event' => 'outlet_assign',
                    'jo_id' => $id,
                ];
                $mclient->sendEvent($jo, $payload);
            }

            $rider = $jo->getRider();
            if ($rider != null)
            {
                // check rider's current job order before changing rider's availability 
                // since rider's current job order is set when JO is assigned to rider
                if ($rider->getCurrentJobOrder() != null)
                {
                    if ($rider->getCurrentJobOrder()->getID() == $jo->getID())
                    {
                        // reset rider's availability to true 
                        $rider->setAvailable(true);

                        // set rider's current job order to null
                        $rider->setCurrentJobOrder();
                    }
                }
            }
        }

        $em->flush();

        return 0;
    }
}