<?php
declare(strict_types=1);

namespace app\api\middleware;

use app\api\common\Jwt;
use app\api\common\Response;

/**
 * JWT 认证中间件
 */
class Auth
{
    /**
     * 处理请求
     * @param \think\Request $request
     * @param \Closure $next
     * @return mixed
     */
    public function handle($request, \Closure $next)
    {
        // 获取 Token
        $token = Jwt::getTokenFromRequest();

        if (!$token) {
            return Response::error('未提供认证令牌', 401);
        }

        // 验证 Token
        $payload = Jwt::decode($token);

        if (!$payload) {
            return Response::error('令牌无效或已过期', 401);
        }

        // 将用户信息写入请求中间件上下文，供控制器统一读取
        $request->withMiddleware([
            'payload' => $payload,
            'userid' => (int) ($payload['userid'] ?? 0),
        ]);

        return $next($request);
    }
}