mattermost-mobile/app/reducers/device/websocket.js

// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.

import {GeneralTypes, UserTypes} from 'mattermost-redux/action_types';

function getInitialState() {
    return {
        connected: false,
        lastConnectAt: 0,
        lastDisconnectAt: 0
    };
}

export default function(state = getInitialState(), action) {
    if (!state.connected && action.type === GeneralTypes.WEBSOCKET_SUCCESS) {
        return {
            ...state,
            connected: true,
            lastConnectAt: new Date().getTime()
        };
    } else if (state.connected && (action.type === GeneralTypes.WEBSOCKET_FAILURE || action.type === GeneralTypes.WEBSOCKET_CLOSED)) {
        return {
            ...state,
            connected: false,
            lastDisconnectAt: new Date().getTime()
        };
    }

    if (action.type === UserTypes.LOGOUT_SUCCESS) {
        return getInitialState();
    }

    return state;
}