// Thin wrapper over document.cookie. Values must already be cookie-safe
// (see storage.js, which base64url-encodes everything).

const ONE_YEAR = 60 * 60 * 24 * 365;

export function readCookie(name) {
  const prefix = `${name}=`;
  for (const part of document.cookie.split('; ')) {
    if (part.startsWith(prefix)) return part.slice(prefix.length);
  }
  return null;
}

export function writeCookie(name, value) {
  const secure = location.protocol === 'https:' ? '; Secure' : '';
  document.cookie = `${name}=${value}; Max-Age=${ONE_YEAR}; Path=/; SameSite=Lax${secure}`;
}

export function removeCookie(name) {
  document.cookie = `${name}=; Max-Age=0; Path=/; SameSite=Lax`;
}