<?php

namespace plugin\admin\app\controller;

use support\Request;
use support\Response;
use support\Log;

class LanguageController
{
    /**
     * 不需要登录的方法
     * @var string[]
     */
    protected $noNeedLogin = ['switch'];

    /**
     * 不需要鉴权的方法
     * @var string[]
     */
    protected $noNeedAuth = ['switch'];

    /**
     * 切换语言
     * @param Request $request
     * @return Response
     */
    public function switch(Request $request): Response
    {
        try {
            $lang = $request->post('lang');
            Log::info('Language switch request received', [
                'lang' => $lang,
                'method' => $request->method(),
                'headers' => $request->header(),
                'input' => $request->all()
            ]);
            
            if (!$lang) {
                Log::warning('No language specified in request');
                return json(['code' => 1, 'msg' => '未指定语言']);
            }
            
            if (!in_array($lang, ['zh-cn', 'en', 'ru', 'ar'])) {
                Log::warning('Unsupported language', ['lang' => $lang]);
                return json(['code' => 1, 'msg' => '不支持的语言']);
            }
            
            // 设置语言到session
            session(['lang' => $lang]);
            Log::info('Language set to session', ['lang' => $lang]);
            
            // 获取当前页面的URL
            $referer = $request->header('referer');
            if (!$referer) {
                $referer = '/';
            }
            Log::info('Redirect URL', ['referer' => $referer]);
            
            return json([
                'code' => 0, 
                'msg' => '切换成功',
                'data' => [
                    'redirect' => $referer
                ]
            ]);
        } catch (\Exception $e) {
            Log::error('Language switch error', [
                'error' => $e->getMessage(),
                'trace' => $e->getTraceAsString()
            ]);
            return json([
                'code' => 1,
                'msg' => '切换语言失败: ' . $e->getMessage()
            ]);
        }
    }
}