export function generateCSRFToken(): string {
  const array = new Uint8Array(32);
  crypto.getRandomValues(array);
  return Array.from(array, (byte) => byte.toString(16).padStart(2, '0')).join('');
}

export function validateCSRFToken(token: string, storedToken: string): boolean {
  if (!token || !storedToken) {
    return false;
  }
  
  return token === storedToken;
}

export function getCSRFTokenFromStorage(): string | null {
  if (typeof window === 'undefined') {
    return null;
  }
  
  return sessionStorage.getItem('csrf_token');
}

export function setCSRFTokenToStorage(token: string): void {
  if (typeof window === 'undefined') {
    return;
  }
  
  sessionStorage.setItem('csrf_token', token);
}