<?php
/**
 * User: ssh
 * Date: 2019/11/20
 * Time: 23:21
 */

namespace common\components;

use linslin\yii2\curl;
use yii\helpers\Json;

class mapUtil
{

    public static $thirdMapKey = 'fe792548aa6e15ef4d5d501e508eaeae';

    public static function suggestion($region, $keyword)
    {
        if (getenv('YII_ENV') == 'production') {
            $url = "https://restapi.amap.com/v3/assistant/inputtips?city={$region}&keywords={$keyword}&key=" . self::$thirdMapKey;
        } else {
            $url = "http://restapi.amap.com/v3/assistant/inputtips?city={$region}&keywords={$keyword}&key=" . self::$thirdMapKey;
        }
        $curl = new curl\Curl();
        $result = $curl->get($url);
        return Json::decode($result);
    }

    //计算距离 lng经度 lat纬度 ssh 2020.5.14
    public static function calculateDistance($fromLnt, $fromLat, $toLnt, $toLat)
    {
        if (getenv('YII_ENV') == 'production') {
            $url = "https://restapi.amap.com/v5/direction/electrobike?key=" . self::$thirdMapKey . '&origin=' . $fromLnt . ',' . $fromLat . '&destination=' . $toLnt . ',' . $toLat;
        } else {
            $url = "http://restapi.amap.com/v5/direction/electrobike?key=" . self::$thirdMapKey . '&origin=' . $fromLnt . ',' . $fromLat . '&destination=' . $toLnt . ',' . $toLat;
        }
        $curl = new curl\Curl();
        $result = $curl->get($url);
        $result = Json::decode($result);
        $distance = 0;
        if (!empty($result['status']) && $result['status'] == 1) {
            $path = $result['route']['paths'] ?? [];
            $current = $path[0] ?? [];
            $distance = $current['distance'] ?? 0;
        }
        return $distance;
    }

    /**
     * 批量计算多个起点到一个终点的距离 (高德 V3 距离测量接口)
     * @param array $origins 起点坐标数组，例如：[['lng' => '116.481028', 'lat' => '39.989643'], ...]
     * @param string $toLnt 终点经度
     * @param string $toLat 终点纬度
     * @param int $type 路径计算的方式和方法 (0:直线距离, 1:驾车, 3:步行)
     * @return array
     */
    public static function calculateBatchDistance($origins, $toLnt, $toLat, $type = 1)
    {
        if (empty($origins)) {
            return [];
        }

        // 将起点数组拼接成高德要求的格式: lng1,lat1|lng2,lat2
        $originStrs = [];
        foreach ($origins as $origin) {
            $originStrs[] = $origin['lng'] . ',' . $origin['lat'];
        }
        $originsParam = implode('|', $originStrs);
        $destinationParam = $toLnt . ',' . $toLat;

        $domain = getenv('YII_ENV') == 'production' ? 'https://restapi.amap.com' : 'http://restapi.amap.com';
        $url = $domain . "/v3/distance?key=" . self::$thirdMapKey . "&origins={$originsParam}&destination={$destinationParam}&type={$type}";

        $curl = new curl\Curl();
        $result = $curl->get($url);
        $result = \yii\helpers\Json::decode($result);

        $distances = [];
        if (!empty($result['status']) && $result['status'] == 1 && !empty($result['results'])) {
            foreach ($result['results'] as $index => $res) {
                // 返回的结果顺序与传入的 origins 顺序一致
                $distances[$index] = $res['distance'] ?? 0; 
            }
        }
        
        return $distances;
    }

    //逆地址解析，根据经纬度解析出中文地址 ssh
    public static function resolveLocation($lat, $long)
    {
        $url = "https://apis.map.qq.com/ws/geocoder/v1/?location={$lat},{$long}&get_poi=0&key=" . self::$thirdMapKey;
        $curl = new curl\Curl();
        $result = $curl->get($url);
        $result = Json::decode($result);
        return $result;
    }
}