<?php

declare(strict_types=1);

namespace app\miniapi\middleware;

use Webman\Http\Request;
use Webman\Http\Response;
use Webman\MiddlewareInterface;
use app\miniapi\http\ApiResponse;
use app\miniapi\http\Input;
use app\miniapi\exception\ApiException;

final class ApiBoundary implements MiddlewareInterface
{
    public function process(Request $request, callable $handler): Response
    {
        if (!ApiResponse::owns($request)) {
            return $handler($request);
        }
        $request->miniRequestId = bin2hex(random_bytes(16));
        $request->miniPrincipal = null;
        $origin = (string) $request->header('origin', '');
        $origins = (array) config('mini_api.allowed_origins', []);
        $started = microtime(true);
        // 临时停用 Origin 来源拒绝校验，联调结束后恢复。
        // if ($origin !== '' && !in_array($origin, $origins, true)) {
        //     $response = ApiResponse::error($request, new ApiException(40301, '不允许的访问来源', 403));
        // }
        if ($request->method() === 'OPTIONS') {
            $response = new \support\Response(204);
        } elseif (strlen($request->rawBody()) > Input::bodyLimit($request)) {
            $response = ApiResponse::error($request, new ApiException(41301, '请求内容过大', 413));
        } else {
            $response = $handler($request);
        }
        foreach ([
            'X-Request-Id' => ApiResponse::requestId($request),
            'Cache-Control' => 'no-store',
            'X-Content-Type-Options' => 'nosniff',
        ] as $name => $value) {
            $response->withHeader($name, $value);
        }
        if ($origin !== '' && in_array($origin, $origins, true)) {
            $response->withHeaders([
                'Access-Control-Allow-Origin' => $origin,
                'Vary' => 'Origin',
                'Access-Control-Allow-Methods' => 'GET, HEAD, POST, PUT, PATCH, DELETE, OPTIONS',
                'Access-Control-Allow-Headers' => 'Authorization, Content-Type',
                'Access-Control-Expose-Headers' => 'X-Request-Id, Retry-After',
            ]);
        }
        \support\Log::info('mini_api.request', [
            'request_id' => ApiResponse::requestId($request),
            'method' => $request->method(),
            'path' => $request->path(),
            'status' => $response->getStatusCode(),
            'duration_ms' => round((microtime(true) - $started) * 1000, 2),
        ]);

        return $response;
    }
}