<?php

namespace App\Http\Controllers;

use Illuminate\Http\Response;

class RobotsController extends Controller
{
    public function index(): Response
    {
        $sContent = "User-agent: *\n";
        $sContent .= "Allow: /\n";
        $sContent .= "Disallow: /admin/\n";
        $sContent .= "Disallow: /api/\n";
        $sContent .= "Disallow: /storage/\n";
        $sContent .= "Disallow: /vendor/\n";
        $sContent .= "Disallow: /test/\n";
        $sContent .= "Disallow: /*?*\n\n";
        $sContent .= "Sitemap: " . config('app.url') . "/sitemap.xml\n";

        // 核心修复：强制指定 text/plain 响应头
        return response($sContent, 200)
            ->header('Content-Type', 'text/plain; charset=utf-8');
    }
}