software-market/application/common/service/UserService.php

<?php

namespace app\common\service;

use app\common\model\Accounts;
use app\common\model\User;
use EasyWeChat\Factory;
use app\common\traits\ServiceTrait;

class UserService
{
    use ServiceTrait;

    /** @var User */
    public static $Model = User::class;

    const GENDER_MAP = ['未知', '男', '女'];

    const ROLE_DEV = 'dev'; //开发者

    /**
     * @throws
     */
    public static function wxLogin($code)
    {
        // 微信配置
        $wechatConfig = config('common.wechat');
        $app = Factory::miniProgram($wechatConfig);
        $result = $app->auth->session($code);
        if (isset($result['errcode'])) {
            throw new \Exception('微信登录失败：' . $result['errmsg']);
        }

        $openid = $result['openid'];
        $user = self::$Model::where('openid', $openid)->field('id,username,nickname,avatar,role')->find();
        if (!$user) {
            // 新用户自动注册
            $user = new User;
            $user->openid = $openid;
            $user->nickname = '微信用户' . mt_rand(10000, 99999);
            $user->account = new Accounts();
            $res = $user->together('account')->save();
        }
        $account = Accounts::where('user_id', $user->id ?? 0)->find();
        if (!$account) {
            $acRes = $user->account()->save([]);
        }

        return $user;
    }
}