<?php
namespace app\common\logic;
use app\common\model\city\City;

/**
 * 城市逻辑类
 * Class CityLogic
 * @package app\common\logic
 */
class CityLogic extends BaseLogic
{

    /**
     * @notes 获取经纬度附近的城市
     * @param $longitude
     * @param $latitude
     * @return array
     * @author cjhao
     * @date 2024/9/3 23:41
     */
    public static function getNearbyCity($longitude,$latitude)
    {
        //用st_distance_sphere函数计算两点记录，单位米，这里换成千米
        $field = 'id,city_id,name,0 as distance,gcj02_lng as longitude,gcj02_lat as latitude';
        if($longitude && $latitude){
            //用st_distance_sphere函数计算两点记录，单位米，这里换成千米
            $field = 'id,city_id,name,round(st_distance_sphere(point('.$longitude.','.$latitude.'),
            point(gcj02_lng, gcj02_lat))/1000,2) as distance,'.$longitude.' as longitude,'.$latitude.' as latitude';
        }

        $cityLists = City::field($field)
            ->append(['distance_desc'])
            ->order('distance asc')
            ->hidden(['distance'])
            ->select()
            ->toArray();
        return $cityLists;

    }
}