<?php
/**
 * Created by PhpStorm.
 * User: Mead
 * Date: 2019/9/19
 * Time: 10:09 AM
 */

namespace App\Observers;

use App\Models\Area;
use Illuminate\Support\Facades\Artisan;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Redis;

class AreaObserver
{

    public function created(Area $area)
    {
        $redis = Redis::connection();
        $merchant_id = $area->merchant_id;
        $location_key = Area::REDIS_AREAS_LOCATION_TAG . ":{$merchant_id}";
//        $area_key = Area::REDIS_AREAS_TAG . ":{$merchant_id}:";
        $area_key = Area::REDIS_AREAS_TAG;
        if ((int)$area->status === Area::STATUS_OK) {
            $centre = json_decode($area->area_centre, true);
            $redis->geoadd($location_key, $centre[0], $centre[1], $area->id);
            $db_area = DB::table('areas')->where('id', $area->id)->first();
            $redis->hset($area_key, $area->id, serialize(object_array($db_area)));
        } else {
            $redis->hdel($area_key, [$area->id]);
            $redis->zrem($location_key, [$area->id]);
        }
    }

    public function updated(Area $area)
    {
        if (!$area->isDirty('status')) return true;

        $redis = Redis::connection();
        $merchant_id = $area->merchant_id;
        $location_key = Area::REDIS_AREAS_LOCATION_TAG . ":{$merchant_id}";
        $area_key = Area::REDIS_AREAS_TAG;
        if ((int)$area->status === Area::STATUS_OK) {
            $db_area = DB::table('areas')->where('id', $area->id)->first();
            $centre = json_decode($db_area->area_centre, true);
            $redis->geoadd($location_key, $centre['longitude'], $centre['latitude'], $area->id);
            $redis->hset(Area::REDIS_AREAS_TAG, $area->id, serialize(object_array($db_area)));

            //调整停车区
            Artisan::call('load:stop_bike_sites');
        } else {
            $redis->hdel($area_key, [$area->id]);
            $redis->zrem($location_key, [$area->id]);
            Artisan::call('load:stop_bike_sites');
        }

    }

    public function deleted(Area $area)
    {
        $merchant_id = $area->merchant_id;
        $location_key = Area::REDIS_AREAS_LOCATION_TAG . ":{$merchant_id}";
        $area_key = Area::REDIS_AREAS_TAG;
        $redis = Redis::connection();
        $redis->zrem($location_key, $area->id);
        $redis->hdel($area_key, [$area->id]);
    }
}