/**
 * 本地存储工具
 */

const TOKEN_KEY = 'yack_token';
const USER_INFO_KEY = 'yack_user_info';
const DEVICE_LIST_KEY = 'yack_device_list';
const PENDING_DATA_KEY = 'yack_pending_data';

/**
 * 获取 Token
 * @returns {string|null}
 */
function getToken() {
  try {
    return wx.getStorageSync(TOKEN_KEY) || null;
  } catch (e) {
    console.error('[Storage] getToken error:', e);
    return null;
  }
}

/**
 * 设置 Token
 * @param {string} token
 */
function setToken(token) {
  try {
    wx.setStorageSync(TOKEN_KEY, token);
  } catch (e) {
    console.error('[Storage] setToken error:', e);
  }
}

/**
 * 移除 Token
 */
function removeToken() {
  try {
    wx.removeStorageSync(TOKEN_KEY);
  } catch (e) {
    console.error('[Storage] removeToken error:', e);
  }
}

/**
 * 获取用户信息
 * @returns {Object|null}
 */
function getUserInfo() {
  try {
    return wx.getStorageSync(USER_INFO_KEY) || null;
  } catch (e) {
    console.error('[Storage] getUserInfo error:', e);
    return null;
  }
}

/**
 * 设置用户信息
 * @param {Object} userInfo
 */
function setUserInfo(userInfo) {
  try {
    wx.setStorageSync(USER_INFO_KEY, userInfo);
  } catch (e) {
    console.error('[Storage] setUserInfo error:', e);
  }
}

/**
 * 移除用户信息
 */
function removeUserInfo() {
  try {
    wx.removeStorageSync(USER_INFO_KEY);
  } catch (e) {
    console.error('[Storage] removeUserInfo error:', e);
  }
}

/**
 * 获取设备列表
 * @returns {Array}
 */
function getDeviceList() {
  try {
    return wx.getStorageSync(DEVICE_LIST_KEY) || [];
  } catch (e) {
    console.error('[Storage] getDeviceList error:', e);
    return [];
  }
}

/**
 * 保存设备列表
 * @param {Array} devices
 */
function saveDeviceList(devices) {
  try {
    wx.setStorageSync(DEVICE_LIST_KEY, devices);
  } catch (e) {
    console.error('[Storage] saveDeviceList error:', e);
  }
}

/**
 * 添加设备
 * @param {Object} device
 */
function addDevice(device) {
  const devices = getDeviceList();
  // 检查是否已存在
  const index = devices.findIndex(d => d.serialNumber === device.serialNumber);
  if (index >= 0) {
    devices[index] = device;
  } else {
    devices.push(device);
  }
  saveDeviceList(devices);
}

/**
 * 删除设备
 * @param {string} serialNumber
 */
function removeDevice(serialNumber) {
  const devices = getDeviceList();
  const newDevices = devices.filter(d => d.serialNumber !== serialNumber);
  saveDeviceList(newDevices);
}

/**
 * 更新设备
 * @param {Object} device
 */
function updateDevice(device) {
  const devices = getDeviceList();
  const index = devices.findIndex(d => d.serialNumber === device.serialNumber);
  if (index >= 0) {
    devices[index] = device;
    saveDeviceList(devices);
  }
}

/**
 * 获取单个设备
 * @param {string} serialNumber
 * @returns {Object|null}
 */
function getDevice(serialNumber) {
  const devices = getDeviceList();
  return devices.find(d => d.serialNumber === serialNumber) || null;
}

/**
 * 缓存待上报数据
 * @param {Object} data
 */
function cachePendingData(data) {
  try {
    const pendingList = wx.getStorageSync(PENDING_DATA_KEY) || [];
    pendingList.push({
      ...data,
      cacheTime: Date.now(),
    });
    wx.setStorageSync(PENDING_DATA_KEY, pendingList);
    console.log('[Storage] 缓存待上报数据:', data);
  } catch (e) {
    console.error('[Storage] cachePendingData error:', e);
  }
}

/**
 * 获取待上报数据
 * @returns {Array}
 */
function getPendingData() {
  try {
    return wx.getStorageSync(PENDING_DATA_KEY) || [];
  } catch (e) {
    console.error('[Storage] getPendingData error:', e);
    return [];
  }
}

/**
 * 清除待上报数据
 */
function clearPendingData() {
  try {
    wx.removeStorageSync(PENDING_DATA_KEY);
  } catch (e) {
    console.error('[Storage] clearPendingData error:', e);
  }
}

/**
 * 清除所有数据
 */
function clearAll() {
  try {
    wx.clearStorageSync();
    console.log('[Storage] 已清除所有数据');
  } catch (e) {
    console.error('[Storage] clearAll error:', e);
  }
}

module.exports = {
  getToken,
  setToken,
  removeToken,
  getUserInfo,
  setUserInfo,
  removeUserInfo,
  getDeviceList,
  saveDeviceList,
  addDevice,
  removeDevice,
  updateDevice,
  getDevice,
  cachePendingData,
  getPendingData,
  clearPendingData,
  clearAll,
};