React / Redux / Semantic-UI toast notifications implementation

notificationActions.js

import _ from "lodash";
import {generateUUID} from "common/utils/UUID";

import {
    NOTIFICATION_CLEAR,
    NOTIFICATION_DISMISS,
    NOTIFICATION_SHOW,
    NotificationType,
} from "./notificationConstants";

export {NotificationType};

export function showNotification(options = {}) {
    return (dispatch, getState) => {
        const {message = ""} = options;
        const {header = ""} = options;
        const {type = NotificationType.INFO} = options;
        const {id = generateUUID("notification")} = options;
        const {dismissAfter = 5000} = options;

        const showPayload = {message, header, type, id};

        dispatch({type : NOTIFICATION_SHOW, payload : showPayload});

        if(_.isNumber(dismissAfter)) {
            setTimeout(() => {
                dispatch(dismissNotification(id));
            }, dismissAfter);
        }
    }
}

export function dismissNotification(id) {
    return {
        type : NOTIFICATION_DISMISS,
        payload : {id}
    };
}

export function clearAllNotifications() {
    return {
        type : NOTIFICATION_CLEAR,
    };
}

notificationConstants.js

export const NOTIFICATION_SHOW = "NOTIFICATION_SHOW";
export const NOTIFICATION_DISMISS = "NOTIFICATION_DISMISS";
export const NOTIFICATION_CLEAR = "NOTIFICATION_CLEAR";

export const NotificationType = {
    SUCCESS : "SUCCESS",
    INFO : "INFO",
    WARNING : "WARNING",
    ERROR : "ERROR",
}

NotificationManager.jsx

import React, {Component} from "react";
import {connect} from "react-redux";
import _ from "lodash";
import { Message } from "semantic-ui-react";
import {Portal} from 'react-portal';

import {selectNotifications} from "./notificationSelectors";

import {dismissNotification} from "./notificationActions";


const mapState = (state) => ({
    notifications : selectNotifications(state),
});

const NOTIFICATION_CONTAINER_STYLE = {
    position  : "fixed",
    top       : "10px",
    right     : 0,
    left      : 0,
    zIndex   : 1000,
    width     : "80%",
    maxWidth : "400px",
    margin    : "auto",
};

const Notification = ({message, header, type, id, onCloseClick=_.noop}) => {
    let headerText = header;
    let messageText = message;

    if(!headerText) {
        headerText = message;
        messageText = null;
    }

    const messageHeader = headerText ? <Message.Header>{headerText}</Message.Header> : null;

    // Turn the type string into a boolean prop with the same name
    const typeProp = type.toLowerCase();
    const typeObj = { [typeProp] : true};

    if(messageText) {
        const messagePieces = messageText.split("\n");
        messageText = messagePieces.map(piece => <div>{piece}</div>);
    }

    const onDismiss = () => onCloseClick(id);

    return (
        <Message {...typeObj} onDismiss={onDismiss} >
            {messageHeader}
            <Message.Content>{messageText}</Message.Content>
        </Message>
    );
}


const actions = {dismissNotification};

export class NotificationManager extends Component {
    render() {
        let {notifications = []} = this.props;

        const renderedNotifications = notifications.map( notification => {
            const {id} = notification;

            return (
                <Notification
                    key={id}
                    onCloseClick={this.props.dismissNotification}
                    {...notification}
                />
            )
        });

        return (
            <Portal isOpened={true} key="notificationsPortal">
                <div style={NOTIFICATION_CONTAINER_STYLE}>
                    {renderedNotifications}
                </div>
            </Portal>
        )
    }
}

export default connect(mapState, actions)(NotificationManager);

notificationReducer.js

import {createReducer} from "common/utils/utils";

import {
    NOTIFICATION_CLEAR,
    NOTIFICATION_DISMISS,
    NOTIFICATION_SHOW,
} from "./notificationConstants";

const initialState = [];

function filterNotifications(notifications, id) {
    return notifications.filter(notification => notification.id !== id);
}

export function showNotification(state, payload) {
    const filteredNotifications = filterNotifications(state, payload.id);
    return [payload, ...filteredNotifications];
}

export function dismissNotification(state, payload) {
    return filterNotifications(state, payload.id);
}

export function clearNotifications(state, payload) {
    return [];
}

export default createReducer(initialState, {
    [NOTIFICATION_CLEAR] : clearNotifications,
    [NOTIFICATION_DISMISS] : dismissNotification,
    [NOTIFICATION_SHOW] : showNotification,
});

notificationSelectors.js

import {createSelector} from "reselect";

export const selectUI = state => state.ui;
export const selectNotifications = createSelector(
    selectUI,
    ui => ui.notifications,
);

Thanks for the nice and clean code!