<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Log;

class PortScannerController extends Controller
{
    public function index()
    {
        return view('port-scanner.index');
    }

    public function scan(Request $request)
    {
        $request->validate([
            'ip' => 'required|ip',
            'port' => 'required|integer|min:1|max:65535',
        ]);

        $ip = $request->input('ip');
        $port = $request->input('port');
        $timeout = 2; // Timeout in seconds

        try {
            $startTime = microtime(true);
            $connection = @fsockopen($ip, $port, $errno, $errstr, $timeout);
            $endTime = microtime(true);
            $responseTime = round(($endTime - $startTime) * 1000, 2); // Convert to milliseconds

            if ($connection) {
                fclose($connection);
                $status = 'open';
                $message = "Port $port is open on $ip";
            } else {
                $status = 'closed';
                $message = "Port $port is closed on $ip";
            }

            return response()->json([
                'success' => true,
                'status' => $status,
                'message' => $message,
                'response_time' => $responseTime,
                'ip' => $ip,
                'port' => $port
            ]);
        } catch (\Exception $e) {
            Log::error('Port scan error', [
                'ip' => $ip,
                'port' => $port,
                'error' => $e->getMessage()
            ]);

            return response()->json([
                'success' => false,
                'message' => 'An error occurred while scanning the port',
                'error' => $e->getMessage()
            ], 500);
        }
    }
}