use https://calenderdetail.herokuapp.com/home (in web browser)

for local use (ask Google api credentials from me)

use (in web browser)
http://localhost:3000/home

modules used-

googleapis
express
cookie-session
ejs
body-parser

After visiting the link click get started you will be redirected to google authorization page select gmail id and give permission then 3 options are available

1. to view upcoming events

2. to create events (you will directed to form page fill details and time as per format in placeholder)
   you will recieve event created if event created in google calender
   else busy if date is busy
   or some error if there is error

3. logout to destroy the session

application structure is as per following-

app.js

routes/api.js (where various get and post requests are made and access token is checked at each request , here various functions are used from controller by requiring them from files in controller )

views (folder containing ejs file as ejs is used as templating engine)

controller(folder where
- google.js consist of oauth functions
-calender.js consists of function to view events
-updatecalender.js consists of function to create events
)