' . PHP_EOL;
$xml .= ' ' . htmlspecialchars($loc) . '' . PHP_EOL;
$xml .= ' ' . htmlspecialchars($lastmod) . '' . PHP_EOL;
$xml .= ' ' . htmlspecialchars($changefreq) . '' . PHP_EOL;
$xml .= ' ' . htmlspecialchars($priority) . '' . PHP_EOL;
$xml .= ' ' . PHP_EOL;
}
/**
* Check if column exists in table
*/
function column_exists($pdo, $table, $column) {
try {
$stmt = $pdo->prepare("SHOW COLUMNS FROM `$table` LIKE :column");
$stmt->execute([':column' => $column]);
return $stmt->rowCount() > 0;
} catch (Exception $e) {
return false;
}
}
// If accessed directly via browser, output XML header
if (!$is_cron && !isset($_SERVER['HTTP_USER_AGENT'])) {
header('Content-Type: application/xml; charset=utf-8');
}
try {
log_message("=========================================");
log_message("Starting sitemap generation...");
// --- 1. INITIALIZE ---
$pdo = get_pdo();
$today = date('Y-m-d');
$total_urls = 0;
$start_time = microtime(true);
// Check which date columns exist
$books_has_updated = column_exists($pdo, 'books', 'updated_at');
$books_has_created = column_exists($pdo, 'books', 'created_at');
// Start the XML output
$xml_content = '' . PHP_EOL;
$xml_content .= '' . PHP_EOL;
// --- 2. ADD STATIC PAGES ---
log_message("Adding static pages...");
$static_pages = [
['url' => '/', 'priority' => 1.0, 'changefreq' => 'daily'],
['url' => '/categories.php', 'priority' => 0.8, 'changefreq' => 'weekly'],
['url' => '/index.php', 'priority' => 0.9, 'changefreq' => 'daily'],
];
foreach ($static_pages as $page) {
add_url($xml_content, SITE_URL . $page['url'], $today, $page['changefreq'], $page['priority']);
$total_urls++;
}
log_message("Added " . count($static_pages) . " static page URLs");
// --- 3. ADD CATEGORY PAGES ---
log_message("Fetching categories...");
$category_query = "SELECT slug, name FROM categories WHERE is_hidden = 0 OR is_hidden IS NULL ORDER BY name";
$stmt = $pdo->query($category_query);
$categories = $stmt->fetchAll(PDO::FETCH_ASSOC);
$category_count = count($categories);
if ($category_count > 0) {
foreach ($categories as $category) {
$loc = SITE_URL . '/category.php?slug=' . $category['slug'];
add_url($xml_content, $loc, $today, 'weekly', 0.7);
$total_urls++;
}
log_message("Added $category_count category URLs");
} else {
log_message("No categories found", "WARNING");
}
// --- 4. ADD BOOK PAGES ---
log_message("Fetching books...");
// Build query based on available columns
$book_query = "SELECT slug, title";
if ($books_has_updated) {
$book_query .= ", updated_at";
} elseif ($books_has_created) {
$book_query .= ", created_at";
}
$book_query .= " FROM books WHERE is_hidden = 0 OR is_hidden IS NULL ORDER BY id DESC";
$book_query .= " LIMIT 50000";
$stmt = $pdo->query($book_query);
$books = $stmt->fetchAll(PDO::FETCH_ASSOC);
$book_count = count($books);
if ($book_count > 0) {
foreach ($books as $book) {
$loc = SITE_URL . '/book.php?slug=' . $book['slug'];
// Determine last modification date
if ($books_has_updated && !empty($book['updated_at'])) {
$lastmod = date('Y-m-d', strtotime($book['updated_at']));
} elseif ($books_has_created && !empty($book['created_at'])) {
$lastmod = date('Y-m-d', strtotime($book['created_at']));
} else {
$lastmod = $today;
}
add_url($xml_content, $loc, $lastmod, 'monthly', 0.6);
$total_urls++;
}
log_message("Added $book_count book URLs");
} else {
log_message("No books found", "WARNING");
}
// --- 5. ADD AUTHOR PAGES (if authors table exists) ---
try {
$stmt = $pdo->query("SHOW TABLES LIKE 'authors'");
if ($stmt->rowCount() > 0) {
log_message("Fetching authors...");
$author_query = "SELECT slug, name FROM authors WHERE is_hidden = 0 OR is_hidden IS NULL ORDER BY name LIMIT 10000";
$stmt = $pdo->query($author_query);
$authors = $stmt->fetchAll(PDO::FETCH_ASSOC);
$author_count = count($authors);
if ($author_count > 0) {
foreach ($authors as $author) {
$loc = SITE_URL . '/author.php?slug=' . $author['slug'];
add_url($xml_content, $loc, $today, 'weekly', 0.5);
$total_urls++;
}
log_message("Added $author_count author URLs");
}
}
} catch (Exception $e) {
log_message("Authors table check failed: " . $e->getMessage(), "WARNING");
}
// --- 6. ADD PUBLISHER PAGES (if publishers table exists) ---
try {
$stmt = $pdo->query("SHOW TABLES LIKE 'publishers'");
if ($stmt->rowCount() > 0) {
log_message("Fetching publishers...");
$publisher_query = "SELECT slug, name FROM publishers WHERE is_hidden = 0 OR is_hidden IS NULL ORDER BY name LIMIT 10000";
$stmt = $pdo->query($publisher_query);
$publishers = $stmt->fetchAll(PDO::FETCH_ASSOC);
$publisher_count = count($publishers);
if ($publisher_count > 0) {
foreach ($publishers as $publisher) {
$loc = SITE_URL . '/publisher.php?slug=' . $publisher['slug'];
add_url($xml_content, $loc, $today, 'weekly', 0.5);
$total_urls++;
}
log_message("Added $publisher_count publisher URLs");
}
}
} catch (Exception $e) {
log_message("Publishers table check failed: " . $e->getMessage(), "WARNING");
}
// --- 7. FINALIZE AND SAVE THE FILE ---
$xml_content .= '';
// Validate XML before saving
$dom = new DOMDocument();
$dom->preserveWhiteSpace = false;
$dom->formatOutput = true;
// Suppress warnings for invalid XML
$old_libxml_errors = libxml_use_internal_errors(true);
if ($dom->loadXML($xml_content)) {
libxml_use_internal_errors($old_libxml_errors);
// Format the XML nicely
$formatted_xml = $dom->saveXML();
// Save the sitemap file
if (file_put_contents(SITEMAP_PATH, $formatted_xml)) {
// Set proper permissions
@chmod(SITEMAP_PATH, 0644);
$end_time = microtime(true);
$execution_time = round($end_time - $start_time, 2);
$file_size = filesize(SITEMAP_PATH);
log_message("✅ Sitemap generated successfully!", "SUCCESS");
log_message("📊 Total URLs: $total_urls");
log_message("⏱️ Execution time: {$execution_time} seconds");
log_message("📦 File size: " . format_file_size($file_size));
// If accessed via browser, output the XML directly
if (!$is_cron && php_sapi_name() !== 'cli') {
header('Content-Type: application/xml; charset=utf-8');
echo $formatted_xml;
exit;
}
} else {
throw new Exception("Failed to write to sitemap.xml");
}
} else {
$errors = libxml_get_errors();
libxml_use_internal_errors($old_libxml_errors);
throw new Exception("Invalid XML: " . print_r($errors, true));
}
} catch (Exception $e) {
log_message("ERROR: " . $e->getMessage(), "ERROR");
// If accessed via browser, show error as XML
if (!$is_cron && php_sapi_name() !== 'cli') {
header('Content-Type: application/xml; charset=utf-8');
echo '' . PHP_EOL;
echo '' . PHP_EOL;
echo ' ' . htmlspecialchars($e->getMessage()) . '' . PHP_EOL;
echo '';
}
exit(1);
}
/**
* Format file size for display
*/
function format_file_size($bytes) {
if ($bytes >= 1073741824) {
return number_format($bytes / 1073741824, 2) . ' GB';
} elseif ($bytes >= 1048576) {
return number_format($bytes / 1048576, 2) . ' MB';
} elseif ($bytes >= 1024) {
return number_format($bytes / 1024, 2) . ' KB';
} else {
return $bytes . ' bytes';
}
}
?>