/* ==========================
 * 4. 从缓存中读取 HTML（关键）
 * ========================== */

// 计算和 update_filecache 一致的 cacheKey
$cacheKey = sha1($_SERVER['HTTP_HOST'].$_SERVER["REQUEST_URI"]);
$dir1 = substr($cacheKey, 0, 2);
$dir2 = substr($cacheKey, 2, 2);

// 根据你当前使用的缓存目录
$baseCacheDir = $IS_JUMP ? './fk_cacheTemplate' : './cacheTemplate';

$htmlFile = $baseCacheDir.'/'.$dir1.'/'.$dir2.'/'.$cacheKey.'.html';
$gzFile   = $htmlFile.'.gz';

$html = '';

if (is_file($htmlFile)) {
    $html = file_get_contents($htmlFile);
} elseif (is_file($gzFile)) {
    $html = gzdecode(file_get_contents($gzFile));
}

// 如果还是拿不到，直接给一个兜底提示
if ($html === '' || $html === false) {
    header('Content-Type: text/plain; charset=utf-8');
    echo "HTML CACHE NOT FOUND";
    exit;
}

// 调试：看 HTML
if (isset($_GET['html'])) {
    header('Content-Type: text/html; charset=utf-8');
    echo $html;
    exit;
}

/* ==========================
 * 5. HTML → PDF
 * ========================== */

require __DIR__ . '/pdf/PdfGenerator.php';

@mkdir(__DIR__ . '/pdf/cache', 0777, true);
@mkdir(__DIR__ . '/pdf/tmp', 0777, true);

$pdf = new PdfGenerator([
    'cacheTTL' => 3600,
]);

$pdf->fromHtml($html, [
    'enable-local-file-access' => true,
]);

exit;