<?php
declare(strict_types=1);
header('Content-Type: application/json');

require_once __DIR__ . '/db/config.php';
require_once __DIR__ . '/includes/worlds.php';

$id = isset($_GET['id']) ? (int)$_GET['id'] : 0;
if ($id <= 0) {
    echo json_encode(['success' => false, 'error' => 'Missing world id.']);
    exit;
}

try {
    ensureWorldsTable();
    $world = getWorldById($id);
} catch (Throwable $e) {
    echo json_encode(['success' => false, 'error' => 'Database unavailable.']);
    exit;
}

if (!$world) {
    echo json_encode(['success' => false, 'error' => 'World not found.']);
    exit;
}

$worldData = json_decode($world['world_json'], true);
if (!is_array($worldData)) {
    echo json_encode(['success' => false, 'error' => 'World data corrupted.']);
    exit;
}

echo json_encode([
    'success' => true,
    'world' => $worldData,
    'meta' => [
        'id' => (int)$world['id'],
        'name' => $world['name'],
        'size' => (int)$world['size'],
        'updated_at' => $world['updated_at']
    ]
]);