<?php

namespace app\api\controller;

use app\common\controller\Api;
use think\Db;

/**
 * 地图服务（服务端代理高德，避免小程序 request 域名限制）
 */
class Map extends Api
{
    protected $noNeedLogin = ['geocode', 'regeo'];
    protected $noNeedRight = '*';

    protected function amapKey()
    {
        $raw = Db::name('shopro_config')->where('name', 'amap')->value('value');
        if ($raw) {
            $cfg = json_decode($raw, true);
            if (!empty($cfg['appkey'])) {
                return $cfg['appkey'];
            }
        }
        $platform = Db::name('shopro_config')->where('name', 'platform')->value('value');
        if ($platform) {
            $cfg = json_decode($platform, true);
            if (!empty($cfg['amap']['appkey'])) {
                return $cfg['amap']['appkey'];
            }
        }
        return '24eb092b2163da8fa5087bf92844a5bd';
    }

    protected function amapGet($path, $query)
    {
        $query['key'] = $this->amapKey();
        $url = 'https://restapi.amap.com/v3/' . $path . '?' . http_build_query($query);
        $ctx = stream_context_create(['http' => ['timeout' => 8]]);
        $body = @file_get_contents($url, false, $ctx);
        if ($body === false) {
            $this->error('地图服务请求失败');
        }
        $data = json_decode($body, true);
        if (!$data || (isset($data['status']) && $data['status'] !== '1')) {
            $info = isset($data['info']) ? $data['info'] : '地理编码失败';
            $this->error($info);
        }
        return $data;
    }

    /**
     * 地址 → 坐标
     * @ApiParams (name="address", type="string", required=true)
     */
    public function geocode()
    {
        $address = trim($this->request->get('address', ''));
        if ($address === '') {
            $this->error('地址不能为空');
        }
        $data = $this->amapGet('geocode/geo', ['address' => $address]);
        if (empty($data['geocodes'][0]['location'])) {
            $this->error('无法解析该地址，请尽量填写门牌号');
        }
        list($lng, $lat) = explode(',', $data['geocodes'][0]['location']);
        $this->success('ok', [
            'latitude'  => $lat,
            'longitude' => $lng,
            'formatted' => $data['geocodes'][0]['formatted_address'] ?? '',
        ]);
    }

    /**
     * 坐标 → 地址
     * @ApiParams (name="location", type="string", required=true, description="lng,lat")
     */
    public function regeo()
    {
        $location = trim($this->request->get('location', ''));
        if ($location === '') {
            $this->error('坐标不能为空');
        }
        $data = $this->amapGet('geocode/regeo', ['location' => $location]);
        $this->success('ok', $data['regeocode'] ?? []);
    }
}