<?php
namespace app\middleware;

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

class Lang implements MiddlewareInterface
{
    public function process(Request $request, callable $handler) : Response
    {
        $lang = $request->header('Lang');

        if ($lang === NULL) {
            $body = [
                'status'  => 'error',
                'code'    => 403,
                'message' => 'Please bring your language.',
                'data'    => [],
            ];
            return response(json_encode($body, JSON_UNESCAPED_UNICODE), 403, ['Content-Type' => 'application/json']);
        }

        if ($lang) {
            locale($lang);
        } else {
            locale('zh_CN');
        }

        return $handler($request);
    }
}