<?php

namespace App\Service;

use Doctrine\ORM\EntityManagerInterface;

use App\Service\RedisClientProvider;
use App\Entity\Rider;

class RiderCache
{
    protected $redis;
    protected $loc_key;
    protected $status_key;
    protected $em;

    public function __construct(EntityManagerInterface $em, RedisClientProvider $redis_prov, $loc_key, $status_key)
    {
        $this->redis = $redis_prov->getRedisClient();
        $this->loc_key = $loc_key;
        $this->status_key = $status_key;
        $this->em = $em;
    }

    public function addActiveRider($id, $lat, $lng)
    {
        $this->redis->geoadd(
            $this->loc_key,
            $lng,
            $lat,
            $id
        );
    }

    public function getAllActiveRiders()
    {
        $all_riders = $this->redis->georadius(
            $this->loc_key,
            0,
            0,
            41000,
            'km',
            ['WITHCOORD' => true]
        );

        $locs = [];
        foreach ($all_riders as $data)
        {
            $id = $data[0];
            $lng = $data[1][0];
            $lat = $data[1][1];

            // get rider details so we can check for availability
            $rider = $this->getRiderDetails($id);
            if ($rider != null)
            {
                $locs[$id] = [
                    'longitude' => $lng,
                    'latitude' => $lat,
                ];
            }
        }

        // error_log(print_r($all_riders, true));
        return $locs;
    }

    public function removeActiveRider($id)
    {
        $this->redis->zrem(
            $this->loc_key,
            $id
        );
    }

    public function incJobOrderCount($id, $status)
    {
        $this->redis->hincrby($this->status_key, $id, 1);
    }

    public function decJobOrderCount($id, $status)
    {
        $this->redis->hincrby($this->status_key, $id, -1);
    }

    protected function getRiderDetails($id)
    {
        $rider = $this->em->getRepository(Rider::class)->find($id);
        if ($rider == null)
            return null;

        // return only if available
        if ($rider->isAvailable())
            return $rider;

        return null;
    }
}