?
ORDER BY gm.sent_at DESC
LIMIT 25";
$stmt = $conn->prepare($sql_group_messages);
$stmt->bind_param("s", $last_timestamp);
$stmt->execute();
$result_group_messages = $stmt->get_result();
if ($result_group_messages->num_rows > 0) {
$messages = [];
$latest_timestamp = '';
$sql_users = "SELECT username FROM users";
$user_result = $conn->query($sql_users);
$users = [];
while ($user = $user_result->fetch_assoc()) {
$users[$user['username']] = true;
}
while ($message = $result_group_messages->fetch_assoc()) {
$message_text = htmlspecialchars($message['message']);
$highlight_class = '';
preg_match_all('/@(\w+)/', $message['message'], $mentions);
$unique_mentions = array_unique($mentions[1]);
foreach ($unique_mentions as $mention) {
if (isset($users[$mention])) {
$message_text = preg_replace('/@' . preg_quote($mention, '/') . '/', "@$mention", $message_text, 1);
if ($mention === $current_user) {
$highlight_class = 'highlight';
}
}
}
$message_text = preg_replace('/(https?:\/\/[^\s]+)/', '$1', $message_text);
$message_text = preg_replace('/\b(www\.[^\s]+)/', '$1', $message_text);
$output = "" . htmlspecialchars($message['username']) . ": " . $message_text;
if (!empty($message['file_path'])) {
$path = '/projects/strife/uploads/';
$full_file_path = $_SERVER['DOCUMENT_ROOT'] . $path . $message['file_path'];
if (file_exists($full_file_path)) {
$file_type = mime_content_type($full_file_path);
if (strpos($file_type, 'image') !== false) {
$output .= "
![image]($path" . htmlspecialchars($message[)
";
} elseif (strpos($file_type, 'audio') !== false) {
$output .= "
";
} elseif (strpos($file_type, 'video') !== false) {
$output .= "
";
} else {
$output .= "
Unsupported file type: " . htmlspecialchars($file_type);
}
} else {
$output .= "
File does not exist.";
}
}
$output .= " (" . htmlspecialchars($message['sent_at']) . ")";
$messages[] = $output;
if ($latest_timestamp === '' || $message['sent_at'] > $latest_timestamp) {
$latest_timestamp = $message['sent_at'];
}
}
header('Content-Type: application/json');
echo json_encode(['messages' => array_reverse($messages), 'latest_timestamp' => $latest_timestamp]);
exit;
}
if (time() - $start_time >= $timeout) {
break;
}
usleep(5000);
}
header('Content-Type: application/json');
echo json_encode(['messages' => [], 'latest_timestamp' => $last_timestamp]);