<?php

namespace App\Http\Middleware;

use Closure;
use Illuminate\Http\Request;
use Symfony\Component\HttpFoundation\Response;

class IpFirewall
{
    /**
     * Handle an incoming request.
     */
    public function handle(Request $request, Closure $next): Response
    {
        // İzin verilen IP listesi (Env veya Config'den alınabilir)
        // Boş bırakılırsa herkese açık olur.
        $allowedIpsString = config('app.allowed_api_ips', ''); 
        
        if (empty($allowedIpsString)) {
            return $next($request);
        }

        $allowedIps = explode(',', $allowedIpsString);
        $clientIp = $request->ip();

        if (!in_array($clientIp, $allowedIps)) {
            return response()->json([
                'status' => 'error',
                'message' => 'Access denied. IP not allowed.',
                'ip' => $clientIp
            ], 403);
        }

        return $next($request);
    }
}