<?php

namespace App\Service;

use App\Service\RedisClientProvider;
use App\Entity\JobOrder;

class JobOrderCache
{
    protected $redis;
    protected $active_jo_key;
    protected $latest_active_jo_key;

    public function __construct(RedisClientProvider $redis_prov, $active_jo_key,
                                $latest_jo_key)
    {
        $this->redis = $redis_prov->getRedisClient();
        $this->active_jo_key = $active_jo_key;
        $this->latest_active_jo_key = $latest_jo_key;
    }

    public function addActiveJobOrder(JobOrder $jo)
    {
        $coords = $jo->getCoordinates();

        $this->redis->geoadd(
            $this->active_jo_key,
            $coords->getLongitude(),
            $coords->getLatitude(),
            $jo->getID()
        );
    }

    public function addLatestActiveJoborder(JobOrder $jo)
    {
        $coords = $jo->getCoordinates();

        // add to JO cache with expiry date
        $key = $jo->getID();
        $data = [
            'id' => $key,
            'latitude' => $coords->getLatitude(),
            'longitude' => $coords->getLongitude(),
        ];
        $value = json_encode($data);

        $this->redis->hset($this->latest_active_jo_key, $key, $value);
    }

    public function getAllActiveJobOrders()
    {
        $all_jo = $this->redis->georadius(
            $this->active_jo_key,
            0,
            0,
            41000,
            'km',
            ['WITHCOORD' => true]
        );

        $jo_locs = [];
        foreach ($all_jo as $jo_data)
        {
            $id = $jo_data[0];
            $lng = $jo_data[1][0];
            $lat = $jo_data[1][1];

            $jo_locs[$id] = [
                'longitude' => $lng,
                'latitude' => $lat,
            ];
        }

        // error_log(print_r($all_jo, true));
        return $jo_locs;
    }

    public function getAllLatestActiveJobOrders()
    {
        // get all fields in latest_active_jo hash
        $latest_active_jos = $this->redis->hgetall($this->latest_active_jo_key);

        $jo_locations = [];
        foreach ($latest_active_jos as $active_jo)
        {
            $jo_data = json_decode($active_jo, true);
            $id = '';
            $lat = '';
            $lng = '';
            foreach ($jo_data as $key => $value)
            {
                if ($key == 'id')
                    $id = $value;
                if ($key == 'longitude')
                    $lng = $value;
                if ($key == 'latitude')
                    $lat = $value;

            }
            $jo_locations[$id] = [
                'longitude' => $lng,
                'latitude' => $lat,
            ];
        }

        //error_log(print_r($jo_locations, true));
        return $jo_locations;
    }

    public function removeActiveJobOrder(JobOrder $jo)
    {
        $this->redis->zrem(
            $this->active_jo_key,
            $jo->getID()
        );
    }

    public function removeLatestActiveJobOrder(JobOrder $jo)
    {
        // remove key from latest active jo
        $this->redis->hdel($this->latest_active_jo_key, $jo->getID());
    }

    public function clearLatestActiveJobOrderCache()
    {
        $keys = $this->redis->hkeys($this->latest_active_jo_key);
        foreach ($keys as $key)
        {
            $this->redis->hdel($this->latest_active_jo_key, $key);
        }
    }
}