import Config from "@/common/js/config.js"
let prevSendTimeMs = 0; // 上一条消息发送时间
let socketMsgQueue = []; // socket消息队列
let sendHeartTimer = null;
let heartbeatConst = 15000; // 心跳常量

const actions = {
  // 初始化socket
  initSocket({ commit, dispatch, state }) {
    if (state.lockSocket) return;
    // const { token } = rootState.user;
    // if (!token) return;

    commit('setLockSocket', true);
    commit('setSocket', uni.connectSocket({ url: Config.msgUrl, complete: () => {} }));
    // dispatch('auth');
    dispatch('onSocketOpen');
    dispatch('onSocketMessage');
    dispatch('onSocketClose');
    state.socket.onError(errMsg => console.error(errMsg));
    commit('setLockSocket', false);
  },

  // websocket发送channelId进行认证
  auth({ dispatch }) {
    const token = uni.$storage.getStorageSync('anyringToken');
    const data = { type: 'Auth', data: { token } };
    dispatch('sendSocketMessage', data);
  },

  // 监听ws打开
  onSocketOpen({ dispatch, commit, state }) {
    state.socket.onOpen(res => {
      commit('setConnected', true);
      prevSendTimeMs = Date.now();
      dispatch('auth'); // 认证
      // for (let i = 0; i < socketMsgQueue.length; i++) {
      // 	dispatch('sendSocketMessage', socketMsgQueue[i]);
      // }
      // socketMsgQueue = [];
    });
  },

  // 监听收到的ws消息
  onSocketMessage({ commit, dispatch, state }) {
    state.socket.onMessage(res => {
      if (!res || !res.data || !JSON.parse(res.data)) return;
      const resData = JSON.parse(res.data);
      const { messageSet, ackId } = resData;
      // 处理消息体对象
      messageSet.forEach(item => dispatch('handleMessagesData', item));
      ackId && dispatch('sendSocketMessage', { type: 'Ack', data: { ackId } });
    });
  },

  /**
   * 处理收到的消息内容
   * @param {object} item 单个消息体对象
   */
  handleMessagesData({ dispatch, commit, state }, item) {
    const data = JSON.parse(item.data);
    switch (data.type) {
      case 'ChannelStatus': // 认证
        dispatch('handleAuthMessage', data);
        break;
      case 'Notification': // 系统通知
        commit('setNotificationData', item);
        break;
      case 'Ring': // ring
        commit('setRingData', item);
        break;
      case 'Remind': // 小红点
        commit('setRemindData', item);
        break;
      case 'SetMsgSuccess': // 成功
        let arr = [];
        if (data.event === 'Notification') {
          arr = state.notificationData;
        } else if (data.event === 'Ring') {
          arr = state.ringData;
        } else if (data.event === 'Remind') {
          arr = state.remindData;
        }

        let del_index = -1;
        arr.forEach((item, index) => {
          if (item.id === data.data.msgId) {
            del_index = index;
          }
        })

        arr.splice(del_index, 1);

        if (data.event === 'Notification') {
          commit('uploadNotificationData', arr);
        } else if (data.event === 'Ring') {
          commit('uploadRingData', arr);
        } else if (data.event === 'Remind') {
          commit('uploadRemindData', arr);
        }
        break;
      default:
        break;
    }
  },

  // 发送消息
  sendSocketMessage({ state }, data) {
    if (state.connected) {
      prevSendTimeMs = Date.now();
      const msg = JSON.stringify({ toDomain: 'Server', data: JSON.stringify(data) });
      state.socket.send({ data: msg });
    } else {
      socketMsgQueue.push(data);
    }
  },

  // 监听关闭事件
  onSocketClose({ dispatch, commit, state }) {
    state.socket.onClose(() => {
      commit('setConnected', false);
      if (sendHeartTimer) clearInterval(sendHeartTimer);
      setTimeout(() => {
        dispatch('initSocket');
      }, 300);
    });
  },

  /**
   * 处理auth认证返回的ChannelStatus消息
   * @param {object} data 消息内容对象
   */
  handleAuthMessage({ commit, dispatch }, data) {
    if (data.data.authed) {
      dispatch('sendHeart');
    } else {
      uni.$u.toast(data.data.error.text);
      uni.$storage.removeStorageSync('anyringToken');
      commit('setSocket', null);
    }
  },

  // 心跳检测
  sendHeart({ dispatch, state }) {
    if (sendHeartTimer) clearInterval(sendHeartTimer);
    sendHeartTimer = setInterval(() => {
      if (Date.now() - prevSendTimeMs >= heartbeatConst) {
        dispatch('sendSocketMessage', { type: 'Ping' });
      }
    }, 5000);
  },
};

export default actions;