//安裝vuex
npm install vuex

//main.js 中引入
import store from './store'
new Vue({
    el: '#app',
    router,
    store,
    render: h => h(App)
})

const state = {
    url: '',
    webSocket: null,
    lockReconnect: false,
    messageList: [],
    msgItem: {},
    pingInterval: null,
    timeOut: null,
}
const mutations = {
    [types.INIT_WEBSOCKET](state, data) {
        state.webSocket = data
    },
    [types.LOCK_RE_CONNECT](state, data) {
        state.lockReconnect = data
    },
    [types.SET_PING_INTERVAL](state, data) {
        state.pingInterval = data
    },
    [types.SET_MSG_LIST](state, data) {
        state.messageList.push(data)
        state.msgItem = data
    },
}
const actions={
  initWebSocket({ state, commit, dispatch, rootState }) {
        if (state.webSocket) {
            return
        }
        const realUrl = WSS_URL + rootState.doctorBasicInfo.token 
        const webSocket = new WebSocket(realUrl)
        webSocket.onopen = () => {
            console.log('建立鏈接');
            dispatch('heartCheck')
        }
        webSocket.onmessage = e => {
            console.log('接收到消息', e);
            try {
                if (typeof e.data === 'string' && e.data !== 'PONG') {
                    let res = JSON.parse(e.data)
                    console.log('接收到內(nèi)容', res);
                    commit('SET_MSG_LIST', res)
                }
            } catch (error) {}
        }
        webSocket.onclose = () => {
            console.log('關(guān)閉');
            dispatch('reConnect')
        }
        webSocket.onerror = () => {
            console.log('失敗');
            dispatch('reConnect')
        }

        commit('INIT_WEBSOCKET', webSocket)
    },
    // 心跳包
    heartCheck({ state, commit }) {
        console.log(state, 'state');
        const { webSocket } = state
        const pingInterval = setInterval(() => {
            if (webSocket.readyState === 1) {
                webSocket.send('PING')
            }
        }, 20000)
        commit('SET_PING_INTERVAL', pingInterval)
    },
    //重新鏈接
    reConnect({ state, commit, dispatch }) {
        if (state.lockReconnect) {
            return
        }
        commit('INIT_WEBSOCKET', null)
        commit('LOCK_RE_CONNECT', true)
        setTimeout(() => {
            dispatch('initWebSocket')
            commit('LOCK_RE_CONNECT', false)
        }, 20000)
    },
 }
const getters = {
    webSocket: state => state.webSocket,
    messageList: state => state.messageList,
    msgItem: state => state.msgItem,
}
export default {
    namespaced: true,
    state,
    actions,
    mutations,
    getters
}

methods: {
...mapActions("webSocket", ["initWebSocket", "close"]),
   pushItem(item) {
      const initMsg = item;
      this.msgList.push(initMsg);
    }
}
mounted() {
	this.initWebSocket();
}
watch: {
    msgItem: function (item) {
        this.pushItem(item);
    }
  },
computed: {
    ...mapGetters("webSocket", ["messageList", "msgItem"]),
   
  },

 <li v-for="(item, i) in msgList" :key="i" class="msgBox"></li>