slack-gcal

Slack integration with Google calendar.

Setup

• Set up ngrok if you need to tunnel to your localhost from Slack:

 ./ngrok http 8080 
 

• Create a new Google Developer App and create a client-secrets.json file:
  https://console.developers.google.com/project/slack-gcal/apiui/credential/oauthclient

  • Application type: Web application
  • Name: Web App
  • Authorized redirect URIs:
    http://localhost:8080/oauthcallback
https://<something>.ngrok.io/oauthcallback
    
  • Put this .json file in src/main/resources/slack-gcal-test-browser-client-secrets.json.

• Change val serverRootUrl in SlackCalendarService.scala to the ngrok host above.

• To run this:

 sbt
 ~re-start
 

• Create a new Slack Slash Command.
  https://meetuphq.slack.com/services/new/slash-commands
  • Command: /findtimes
  • URL: (ngrok above)
  • Method: POST
  • Description: Finds free time on Gcal with @users as attendees.
  • Usage hint: @user[,@user,...] [YYYY-MM-dd'T'HH:mm:ssZ]

Todos

• Make this use a Service Account rather than do this OAuth2 nonsense across Slack.
  https://developers.google.com/identity/protocols/OAuth2ServiceAccount