let _prefix = 'ema-auth';

export function configureAuthStorage(prefix: string) {
  _prefix = prefix;
}

function key(k: string) {
  return `${_prefix}-${k}`;
}

export const authStorage = {
  getToken: () => localStorage.getItem(key('auth-token')) ?? undefined,
  setToken: (token: string) => localStorage.setItem(key('auth-token'), token),
  getRefreshToken: () => localStorage.getItem(key('refresh-token')) ?? undefined,
  setRefreshToken: (t: string) => localStorage.setItem(key('refresh-token'), t),
  getUser: <T = unknown>(): T | null => {
    try {
      return JSON.parse(localStorage.getItem(key('auth-user')) ?? 'null') as T | null;
    } catch {
      return null;
    }
  },
  setUser: <T>(u: T) => localStorage.setItem(key('auth-user'), JSON.stringify(u)),
  clear: () => {
    [key('auth-token'), key('refresh-token'), key('auth-user')].forEach((k) =>
      localStorage.removeItem(k),
    );
    document.cookie =
      'auth-token=; path=/; expires=Thu, 01 Jan 1970 00:00:00 UTC; SameSite=Lax';
  },
};