公众号OAuth授权， 先静默授权，就不能再非静默授权了

[ycqiang]

<?php
/**
 * Class OAuthAuthenticate: 微信公众号, 企业微信的网页应用。
 */
class OAuthAuthenticate
{
    public function handle($request, Closure $next, $account = 'default', $scope = null, $type = 'service')
    {
        $isNewSession = false;
        //保证兼容性
        $class = ('work' !== $type) ? 'wechat' : 'work';
        $prefix = ('work' !== $type) ? 'official_account' : 'work';
        $sessionKey = \sprintf($class.'.oauth_user.%s', $account);
        $config = config(\sprintf('wechat.'.$prefix.'.%s', $account), []);
        $officialAccount = app(\sprintf('wechat.'.$prefix.'.%s', $account));
        $scope = $scope ?: Arr::get($config, 'oauth.scopes', ['snsapi_base']);

        if (is_string($scope)) {
            $scope = array_map('trim', explode(',', $scope));
        }

        $session = session($sessionKey, []);

        if (!$session) {
            if ($request->has('code')) {
                session([$sessionKey => $officialAccount->oauth->user() ?? []]);
                $isNewSession = true;

                event(new WeChatUserAuthorized(session($sessionKey), $isNewSession, $account));

                return redirect()->to($this->getTargetUrl($request));
            }

            session()->forget($sessionKey);

            return $officialAccount->oauth->scopes($scope)->redirect($request->fullUrl());
        }

        event(new WeChatUserAuthorized(session($sessionKey), $isNewSession, $account));

        return $next($request);
    }
}

原因是 session 没有过期且 sessionKey 不变就不会再次授权；account 一样的情况下，scope 从 'snsapi_base' 换成 'snsapi_userinfo' ，sessionKey 不变，则不会再次授权；