<?php

namespace App\Middleware;

use Hyperf\Context\ApplicationContext;
use Hyperf\Contract\TranslatorInterface;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Server\MiddlewareInterface;
use Psr\Http\Server\RequestHandlerInterface;

class LanguageMiddleware implements MiddlewareInterface
{

    public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
    {
        $lang = $request->getHeaderLine('Accept-Language') ?: 'zh_cn';
        $lang = str_replace('-', '_', strtolower($lang));
        $translator = ApplicationContext::getContainer()->get(TranslatorInterface::class);
        $translator->setLocale($lang);
        return $handler->handle($request);
    }
}