), garantindo que a declaracao XML seja o primeiro byte.
ob_start();
require_once __DIR__ . '/config.php';
require_once __DIR__ . '/functions.php';

$base = defined('URL_BASE') ? URL_BASE : '';

/** @var array<int,array{loc:string,freq:string,pri:string,lastmod?:string}> $urls */
$urls = [
    ['loc' => $base . '/',             'freq' => 'weekly',  'pri' => '1.0'],
    ['loc' => $base . '/jogos/',       'freq' => 'weekly',  'pri' => '0.9'],
    ['loc' => $base . '/ferramentas/', 'freq' => 'weekly',  'pri' => '0.8'],
    ['loc' => $base . '/blog/',        'freq' => 'weekly',  'pri' => '0.8'],
    ['loc' => $base . '/sobre/',       'freq' => 'monthly', 'pri' => '0.7'],
    ['loc' => $base . '/politicas/',   'freq' => 'monthly', 'pri' => '0.5'],
];

try {
    $pdo = conectarBD();

    // Jogos com pagina publica
    $stmt = $pdo->query("SELECT slug, data_atualizacao, data_criacao FROM jogos WHERE status IN ('disponivel','em_breve') ORDER BY slug");
    foreach ($stmt->fetchAll() as $j) {
        $urls[] = [
            'loc' => $base . '/jogos/?slug=' . rawurlencode($j['slug']),
            'freq' => 'weekly', 'pri' => '0.7',
            'lastmod' => $j['data_atualizacao'] ?: $j['data_criacao'],
        ];
    }

    // Ferramentas online (tem pagina propria)
    $stmt = $pdo->query("SELECT slug, data_criacao FROM ferramentas WHERE status='disponivel' AND tipo='online' ORDER BY slug");
    foreach ($stmt->fetchAll() as $f) {
        $urls[] = [
            'loc' => $base . '/ferramentas/arquivos/' . rawurlencode($f['slug']) . '/',
            'freq' => 'monthly', 'pri' => '0.6',
            'lastmod' => $f['data_criacao'],
        ];
    }

    // Posts do blog publicados (um por slug)
    $stmt = $pdo->query("SELECT slug, MAX(data_publicacao) AS dt FROM blog_posts WHERE publicado = 1 GROUP BY slug ORDER BY dt DESC");
    foreach ($stmt->fetchAll() as $p) {
        $urls[] = [
            'loc' => $base . '/blog/post.php?slug=' . rawurlencode($p['slug']),
            'freq' => 'monthly', 'pri' => '0.6',
            'lastmod' => $p['dt'],
        ];
    }

    // Documentos de politicas/EULAs publicados (um por slug)
    $stmt = $pdo->query("SELECT slug, MAX(data_atualizacao) AS dt FROM politicas_documentos WHERE publicado = 1 GROUP BY slug ORDER BY slug");
    foreach ($stmt->fetchAll() as $d) {
        $urls[] = [
            'loc' => $base . '/politicas/documento.php?slug=' . rawurlencode($d['slug']),
            'freq' => 'monthly', 'pri' => '0.5',
            'lastmod' => $d['dt'],
        ];
    }
} catch (Throwable $e) {
    // Se o banco falhar, ainda servimos as paginas estaticas.
    error_log('Erro ao gerar sitemap: ' . $e->getMessage());
}

// Descarta saida acidental dos includes e emite XML limpo.
while (ob_get_level() > 0) {
    ob_end_clean();
}
if (!headers_sent()) {
    header('Content-Type: application/xml; charset=utf-8');
    header('X-Robots-Tag: noindex'); // o sitemap em si nao deve ser indexado
}

echo '<' . '?xml version="1.0" encoding="UTF-8"?' . '>' . "\n";
echo '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">' . "\n";
foreach ($urls as $u) {
    echo "  <url>\n";
    echo "    <loc>" . htmlspecialchars($u['loc'], ENT_XML1, 'UTF-8') . "</loc>\n";
    if (!empty($u['lastmod'])) {
        $ts = strtotime((string)$u['lastmod']);
        if ($ts) {
            echo "    <lastmod>" . date('Y-m-d', $ts) . "</lastmod>\n";
        }
    }
    echo "    <changefreq>" . $u['freq'] . "</changefreq>\n";
    echo "    <priority>" . $u['pri'] . "</priority>\n";
    echo "  </url>\n";
}
echo '</urlset>' . "\n";