const SERVERS_KEY = 'apiServers';
const CURRENT_SERVER_KEY = 'currentServer';
const TOKEN_PREFIX = 'token_';
const USER_PREFIX = 'user_';

export function getServers() {
  const servers = localStorage.getItem(SERVERS_KEY);
  return servers ? JSON.parse(servers) : [];
}

export function saveServers(servers) {
  localStorage.setItem(SERVERS_KEY, JSON.stringify(servers));
}

export function getCurrentServer() {
  return localStorage.getItem(CURRENT_SERVER_KEY) || '';
}

export function setCurrentServer(server) {
  if (server) {
    localStorage.setItem(CURRENT_SERVER_KEY, server);
  } else {
    localStorage.removeItem(CURRENT_SERVER_KEY);
  }
}

export function getToken(server) {
  return server ? localStorage.getItem(`${TOKEN_PREFIX}${server}`) || '' : '';
}

export function setToken(server, token) {
  if (server) {
    localStorage.setItem(`${TOKEN_PREFIX}${server}`, token);
  }
}

export function getUser(server) {
  if (!server) return null;
  const value = localStorage.getItem(`${USER_PREFIX}${server}`);
  return value ? JSON.parse(value) : null;
}

export function setUser(server, user) {
  if (server) {
    localStorage.setItem(`${USER_PREFIX}${server}`, JSON.stringify(user));
  }
}

export function clearAuth(server) {
  if (!server) return;
  localStorage.removeItem(`${TOKEN_PREFIX}${server}`);
  localStorage.removeItem(`${USER_PREFIX}${server}`);
}