<?php

namespace Tests\Unit;

use App\Support\VisitorIp;
use Illuminate\Http\Request;
use PHPUnit\Framework\Attributes\Test;
use Tests\TestCase;

class VisitorIpTest extends TestCase
{
    #[Test]
    public function prefers_cf_connecting_ip_over_xff_and_true_client_ip(): void
    {
        $request = Request::create('/', 'GET', [], [], [], [
            'REMOTE_ADDR' => '104.16.1.1',
            'HTTP_X_FORWARDED_FOR' => '1.2.3.4, 203.0.113.50',
            'HTTP_TRUE_CLIENT_IP' => '198.51.100.9',
            'HTTP_CF_CONNECTING_IP' => '203.0.113.77',
        ]);

        $this->assertSame('203.0.113.77', VisitorIp::fromRequest($request));
    }

    #[Test]
    public function falls_back_to_true_client_ip_then_remote_addr(): void
    {
        $trueClient = Request::create('/', 'GET', [], [], [], [
            'REMOTE_ADDR' => '104.16.1.1',
            'HTTP_X_FORWARDED_FOR' => '1.2.3.4',
            'HTTP_TRUE_CLIENT_IP' => '198.51.100.9',
        ]);
        $this->assertSame('198.51.100.9', VisitorIp::fromRequest($trueClient));

        $direct = Request::create('/', 'GET', [], [], [], [
            'REMOTE_ADDR' => '127.0.0.1',
        ]);
        $this->assertSame('127.0.0.1', VisitorIp::fromRequest($direct));
    }

    #[Test]
    public function ignores_invalid_cf_header_and_unwraps_mapped_ipv6(): void
    {
        $invalid = Request::create('/', 'GET', [], [], [], [
            'REMOTE_ADDR' => '127.0.0.1',
            'HTTP_CF_CONNECTING_IP' => 'not-an-ip',
        ]);
        $this->assertSame('127.0.0.1', VisitorIp::fromRequest($invalid));

        $this->assertSame('203.0.113.9', VisitorIp::normalize('::ffff:203.0.113.9'));
        $this->assertSame('203.0.113.9', VisitorIp::normalize('203.0.113.9, 10.0.0.1'));
        $this->assertSame('', VisitorIp::normalize('unknown'));
    }
}