<?php

namespace app\common\Service\Third\Wechat;

use fast\Http;
use app\common\facade\Wechat;
use app\common\exception\BusinessException;
use app\common\Enum\ChannelEnum;
class OpenPlatform
{
    public $wechat;
    protected $request;
    protected $payload;
    protected $platform;

    public function __construct($platform,$payload)
    {
        $this->payload = $payload;
        $this->request = request();
        if($platform == ChannelEnum::CHANNEL_IOS_APP){
            $this->wechat = Wechat::openIosAppPlatform();
        }else{
            $this->wechat = Wechat::openAndroidAppPlatform();
        }
        $this->platform = $platform;
    }
  /**
     * 转换平台名称格式
     * 将前端驼峰命名转换为后端下划线格式
     *
     * @param string $platform
     * @return string
     */
    protected function convertPlatformName($platform)
    {
        // 将驼峰命名转换为下划线格式
        return strtolower(preg_replace('/([A-Z])/', '_$1', lcfirst($platform)));
    }
    public function login()
    {
        $payload = $this->payload;
        if (empty($payload['code'])) {
            throw new BusinessException('登陆失败');
        }
        // 需要转换   前段穿 DouyinMiniProgram  后端配置是   douyin_mini_program
        $platformKey = $this->convertPlatformName($this->platform);
        $config = shop_config('shop.platform.' . $platformKey);
        // 获取accessToken & openid
        $res = Http::get('https://api.weixin.qq.com/sns/oauth2/access_token', [
            'appid' => $config['app_id'],
            'secret' => $config['secret'],
            'code' => $payload['code'],
            'grant_type' => 'authorization_code'
        ]);
        $decryptedData = json_decode($res, true);
        if (isset($decryptedData['errmsg'])) {
            throw new BusinessException($decryptedData['errmsg']);
        }

        // 获取userInfo
        $res = Http::get('https://api.weixin.qq.com/sns/userinfo', ['access_token' => $decryptedData['access_token'], 'openid' => $decryptedData['openid']]);
        $userInfo = is_string($res) ? json_decode($res, true) : $res;
        if (isset($userInfo['errmsg'])) {
            throw new BusinessException($userInfo['errmsg']);
        }

        $wechatUser = [
            'openid' => $userInfo['openid'],
            'unionid' => $userInfo['unionid'] ?? '',
            'avatar' => $userInfo['headimgurl'],
            'nickname' => $userInfo['nickname'],
        ];
        return $wechatUser;
    }

    public function bind()
    {
        return $this->login();
    }
}