<?php
header('Content-Type: application/json');
header('Access-Control-Allow-Origin: *');

$lat = isset($_GET['lat']) ? floatval($_GET['lat']) : 0;
$lng = isset($_GET['lng']) ? floatval($_GET['lng']) : 0;

if (!$lat || !$lng) {
    echo json_encode(['error' => 'Koordinat tidak valid']);
    exit;
}

$url = "https://nominatim.openstreetmap.org/reverse?format=json&lat={$lat}&lon={$lng}&accept-language=id&zoom=18";

$context = stream_context_create([
    'http' => [
        'header' => "User-Agent: WebGIS-Pontianak/1.0\r\n",
        'timeout' => 10
    ]
]);

$response = @file_get_contents($url, false, $context);

if ($response === false) {
    echo json_encode(['error' => 'Gagal menghubungi Nominatim']);
    exit;
}

echo $response;