<?php
/**
 * Created by PhpStorm.
 * User: stanley-king
 * Date: 2018/3/7
 * Time: 下午2:46
 * amap 是调用高德地图接口，baidu 是调用百度接口
 */
require_once(BASE_ROOT_PATH . '/core/framework/function/http.php');

class amap
{
    public function call_map($city,$address)
    {
        $key = 'a284df4b8cef6aa5144f43ad5753b7d4'; //高德地图访问key，账号:13911129867,密码:jyc2018168.
        $url = "http://restapi.amap.com/v3/geocode/geo";
        $params = ['key' => $key,'address' => $address,'city' => $city];

        $resp = http_request($url,$params);
        $data = json_decode($resp,true);
        if($data['status'] != 1) {
            return false;
        }
        else {
            return $data;
        }
    }
    public function geocodes($city,$address)
    {
        $resp = $this->call_map($city,$address);
        if($resp === false) return false;

        $geocodes = $resp['geocodes'];
        if(count($geocodes) <= 0 || count($geocodes) > 1) {
            return false;
        }
        else
        {
            $location = $geocodes[0]['location'];
            $lng_lat = mb_split(',',$location);
            return $lng_lat;
        }
    }
}

class baidu
{
    static $key = '5MINsIU8ukWmTn48t9fcGpEUafoQF8Kg';
    static $url = 'http://api.map.baidu.com/geocoder/v2/';

    public function call_map($city,$address)
    {

        //http://api.map.baidu.com/geocoder/v2/?address=&output=json&ak=&callback=showLocation
        $params = ['ak' => self::$key,'address' => "{$city}{$address}",'output' => 'json', 'coordtype' => 'bd09ll' ];

        $resp = http_request(self::$url, $params);
        $data = json_decode($resp,true);
        if($data['status'] != 0) {
            return false;
        }
        else {
            return $data;
        }
    }
    public function geocodes($city,$address)
    {
        $resp = $this->call_map($city,$address);
        if($resp === false) return false;

        $loc = $resp['result']['location'];
        return [ $loc['lng'],$loc['lat'] ];
    }

    public function getReverse($location)
    {
        $params = [
            'ak'    => self::$key,
            'location'  => $location,
            'output'    => 'json',
            'coordtype' => 'bd09ll',
            'pois'      => 0
        ];
        $resp = http_request(self::$url, $params);
        $data = json_decode($resp,true);
        if($data['status'] != 0) {
            return false;
        }
        else {
            return $data;
        }
    }
}

class geo_helper
{
    static private $stInstance = null;

    private function __construct() {

    }
    static public function instance()
    {
        if (self::$stInstance == null) {
            self::$stInstance = new geo_helper();
        }
        return self::$stInstance;
    }

    public function geocodes($city,$address)
    {
        $amap = new amap();
        return $amap->geocodes($city,$address);
    }

    public function getdistance($lng1,$lat1,$lng2,$lat2)
    {
        $fEARTH_RADIUS = 6378137;

        $radLat1 = deg2rad($lat1);
        $radLat2 = deg2rad($lat2);
        $radLng1 = deg2rad($lng1);
        $radLng2 = deg2rad($lng2);

        $a = abs($radLat1-$radLat2);
        $b = abs($radLng1-$radLng2);

        $fP = pow(sin($a/2), 2) + cos($radLat1) * cos($radLat2) * pow(sin($b/2), 2);
        return intval($fEARTH_RADIUS * 2 * asin(sqrt($fP)) + 0.5);
    }

    public function update_store($store_id)
    {
        $model_store	= Model('store');
        $store_info = $model_store->getStoreInfo(['store_id' => $store_id]);

        if(empty($store_info)) return false;

        $area_info = $store_info['area_info'];
        if(empty($area_info)) return false;

        $regxp = '/(\S+)[\s]*(\S+)*/u';
        $val = preg_match_all($regxp,$area_info,$match);

        if($val <= 0 || $val == false) return false;
        if(count($match) != 3) return false;

        if(empty($match[2][0])) {
            $city = $match[1][0];
        }
        else {
            $city = $match[2][0];
        }
        $cityids = $this->cityids($city);
        if(empty($cityids)) return false;

        $city_id = $cityids['city_id'];
        $prov_id = $cityids['prov_id'];

        if(empty($store_info['store_address'])) return false;
        $lng_lat = $this->geocodes($city,$store_info['store_address']);
        if($lng_lat != false) {
            $store_latlng = implode(',',$lng_lat);
            return $model_store->editStore(['province_id' => $prov_id,"city_id" => $city_id,"store_latlng" => $store_latlng],['store_id' => $store_id]);
        }
        else {
            return false;
        }
    }

    static public function asc_dis($left,$right)
    {
        $t_l = intval($left['distance']);
        $t_r = intval($right['distance']);

        if($t_l > $t_r) return 1;
        elseif($t_l < $t_r) return -1;
        else return 0;
    }

    public function asc_stores($car_stores,$usrloc,$city)
    {
        if(empty($car_stores)) return [];

        $cityids = $this->cityids($city);
        if($cityids !== false) {
            $cityid = $cityids['city_id'];
        }
        else {
            $cityid = 0;
        }

        $car_stores = $this->store_infos($car_stores,$cityid);
        $local_stores = $car_stores['local_city'];
        $other_stores = $car_stores['other_city'];
        if(!empty($local_stores))
        {
            foreach ($local_stores as &$item) {
                $s_loc = explode(',',$item['store_latlng']);
                $dis = $this->getdistance($usrloc[0],$usrloc[1],$s_loc[0],$s_loc[1]);
                $item['distance'] = $dis;
            }
            uasort($local_stores,['geo_helper','asc_dis']);
            $match_stores = $local_stores;
        }
        else
        {
            foreach ($other_stores as &$item) {
                $s_loc = explode(',',$item['store_latlng']);
                $dis = $this->getdistance($usrloc[0],$usrloc[1],$s_loc[0],$s_loc[1]);
                $item['distance'] = $dis;
            }
            usort($other_stores,['geo_helper','asc_dis']);
            $match_stores = $other_stores;
        }

        return $match_stores;
    }

    private function store_infos($stores,$cityid)
    {
        $store_ids = [];
        foreach ($stores as $store) {
            $store_ids[] = intval($store);
        }
        $mod_store = Model('store');
        $stores = $mod_store-> getStoreList(['store_id' => ['in',$store_ids]]);

        $result = [];
        $result['local_city'] = [];
        $result['other_city'] = [];
        if($cityid > 0)
        {
            foreach ($stores as $store)
            {
                if($cityid == intval($store['city_id'])) {
                    $result['local_city'][] = $store;
                }
                else {
                    $result['other_city'][] = $store;
                }
            }
        }
        else {
            $result['other_city'] = $stores;
        }

        return $result;
    }

    public function cityids($city)
    {
        if(empty($city)) return false;

        $mod_area = Model('area');
        $info = $mod_area->getAreaInfo(['area_name' => $city]);
        if(empty($info)) return false;

        $parent_id = intval($info['area_parent_id']);
        if($parent_id === 0) {
            $ret['city_id'] = 0;
            $ret['prov_id'] = $info['area_id'];
        }
        else {
            $ret['city_id'] = $info['area_id'];
            $ret['prov_id'] = $info['area_parent_id'];
        }

        return $ret;
    }

    public function city_info($city_id)
    {
        $city_id = intval($city_id);
        if($city_id <= 0) return false;

        $mod_area = Model('area');
        $info = $mod_area->getAreaInfo(['area_id' => $city_id]);

        if(empty($info)) return false;

        $parent_id = intval($info['area_parent_id']);
        if($parent_id === 0) {
            $ret['city_id'] = 0;
            $ret['prov_id'] = $info['area_id'];
            $ret['prov_name'] = $info['area_name'];
            $ret['city_name'] = '';
        }
        else {
            $ret['city_id'] = $info['area_id'];
            $ret['prov_id'] = $parent_id;
            $ret['city_name'] = $info['area_name'];

            $prov = $mod_area->getAreaInfo(['area_id' => $parent_id]);
            $ret['prov_name'] = $prov['area_name'];
        }

        return $ret;
    }
}