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I'm trying to get google calendar events into my React Redux app.
I've tried using googleapis and google-auth-library but webpack is throwing errors because googleapis was built to run server side and bundle.js is referenced from client. So I've read a few forums about these errors and they all point to using Google's js client library instead.

I understand how to implement this in a java or php app (I'm old... 35 ;) but I'm new to React Redux and I'm looking for the best way to implement this.

I'm trying to fetch the events from my calendar in my actions.js. I tried including <script src="https://apis.google.com/js/api.js"></script> in my html header and then using gapi.load() from actions.js. I also tried creating a api.js file and referencing that with require('./api'). I also tried to use the cli commands from the Node.js Quickstart guide to get an access_token and then just use axios to call Google API directly but I'm getting a 403. I'm thinking I'm just not providing the proper headers but that wouldn't be best practice anyway.

My question is basically how do I reference Google's js client library from my actions.js file while adhering to Redux standards?

Answers

I'm going to answer my own question despite some very good correct answers. @MattYao answered my actual question of how to get a js script available for reference in my actions.js file. @Ethan Brown gave a very detailed answer that showed some excellent flow possibilities. @realseanp changed the scope but a valid answer.

I tried all of the above and they worked.

So I'm not sure what I was doing wrong but I was finally able to access the gapi object from actions.js by just adding <script src="https://apis.google.com/js/api.js"></script> to my index head. I'm using pug so it looks like this:

doctype
html
    head
        title MyTitle
        link(rel='stylesheet' href='/static/css/main.css')
        link(rel='stylesheet' href='/static/css/react-big-calendar.css')
        script(src='https://apis.google.com/js/api.js' type='text/javascript')
    body
        div(id='app')
        script(src='/static/bundle.js' type='text/javascript')

Here is my component file:

import React from 'react'
import BigCalendar from 'react-big-calendar';
import moment from 'moment';
import { connect } from 'react-redux'

import { fetchEvents } from '../actions/actions'

BigCalendar.momentLocalizer(moment);
@connect((store) => {
    return {
        events: store.events.events
    }
})
export default class Calendar extends React.Component 
{
    componentWillMount() 
    {        
        this.props.dispatch(fetchEvents())
    }

    render() 
    {
        return (
            <div>
                <BigCalendar
                    events={this.props.events}
                    startAccessor='startDate'
                    endAccessor='endDate'
                    style={{height: 800}}
                />
            </div>
        )
    }
}

And then I was able to get this working in my actions.js file

export function fetchEvents() 
{
  return (dispatch) =>
  {
    function start() 
    {
      // 2. Initialize the JavaScript client library.
      gapi.client.init({
        'apiKey': API_KEY,
        // clientId and scope are optional if auth is not required.
        'clientId': CLIENT_ID,
        'scope': 'profile',
      }).then(function() {
        // 3. Initialize and make the API request.
        return gapi.client.request({
          'path': 'https://www.googleapis.com/calendar/v3/calendars/MY_EMAIL@gmail.com/events?timeMax=2017-06-03T23:00:00Z&timeMin=2017-04-30T00:00:00Z',
        })
      }).then( (response) => {
        let events = response.result.items
        dispatch({ 
          type: 'FETCH_EVENTS_FULFILLED',
          payload: events
        })
      }, function(reason) {
        console.log(reason);
      });
    };

    // 1. Load the JavaScript client library.
    gapi.load('client', start)
}}

I had to make my calendar public to access it this way. So now I'm going to work on the oauth2 stuff :/