<?php

namespace Tests\Unit;

use App\Support\Link\LinkGeoResolver;
use Illuminate\Http\Request;
use Tests\TestCase;

class LinkGeoResolverTest extends TestCase
{
    protected function setUp(): void
    {
        parent::setUp();

        LinkGeoResolver::resetReader();
        config(['link.geoip_database' => base_path('tests/fixtures/GeoLite2-Country-Test.mmdb')]);
    }

    protected function tearDown(): void
    {
        LinkGeoResolver::resetReader();

        parent::tearDown();
    }

    public function test_prefers_proxy_country_header_over_ip_lookup(): void
    {
        $request = Request::create('/', 'GET', server: [
            'REMOTE_ADDR' => '81.2.69.142',
            'HTTP_CF_IPCOUNTRY' => 'GH',
        ]);

        $this->assertSame('GH', LinkGeoResolver::countryCode($request));
    }

    public function test_resolves_country_from_public_ip_when_header_missing(): void
    {
        $request = Request::create('/', 'GET', server: [
            'REMOTE_ADDR' => '81.2.69.142',
        ]);

        $this->assertSame('GB', LinkGeoResolver::countryCode($request));
    }

    public function test_ignores_private_ips(): void
    {
        $this->assertNull(LinkGeoResolver::countryFromIp('127.0.0.1'));
        $this->assertNull(LinkGeoResolver::countryFromIp('10.0.0.4'));
    }

    public function test_returns_null_when_geoip_database_is_missing(): void
    {
        config(['link.geoip_database' => storage_path('app/geoip/missing.mmdb')]);
        LinkGeoResolver::resetReader();

        $request = Request::create('/', 'GET', server: [
            'REMOTE_ADDR' => '81.2.69.142',
        ]);

        $this->assertNull(LinkGeoResolver::countryCode($request));
    }
}