<?php

namespace app\middleware;

use support\Translation;
use Webman\Http\Request;
use Webman\Http\Response;
use Webman\MiddlewareInterface;

class LanguageMiddleware implements MiddlewareInterface
{
    public function process(Request $request, callable $next): Response
    {
        // 从请求头获取语言
        $acceptLanguage = $request->header('Accept-Language');

        if ($acceptLanguage) {
            // 取前两个字符作为语言代码
            $locale = substr($acceptLanguage, 0, 2);

            // 支持的语言列表
            $supportedLocales = ['zh', 'en', 'ru', 'es', 'fr'];

            if (in_array($locale, $supportedLocales)) {
                Translation::setLocale($locale);
            }
        }

        return $next($request);
    }
}