Google Apps Script to sync Google Calendar

What's this?

This GAS is allow you to sync events of Google Calendar.

e.g. You have a@gmail.com and b@gmail.com

a@gmail.com

• Fetch events of a@gmail.com
• Check guests of each event
• If b@gmail.com is not invited for the event, the script invites b@gmail.com
• If b@gmail.com is already invited and set YES/NO status, the script updates status of a@gmail.com
• If a@gamil.com and b@gmail.com have opposite status, the script notifies to Slack

b@gmail.com

• Fetch events of b@gmail.com
• Check guests of each event
• If a@gmail.com is not invited for the event, the script invites a@gmail.com
• If a@gmail.com is already invited and set YES/NO status, the script updates status of b@gmail.com
• If a@gamil.com and b@gmail.com have opposite status, the script notifies to Slack

How to use

IT IS REQUIRED TO EXECUTE SCRIPT ON BOTH ACCOUNTS TO SYNC EVENTS.

Set up variables

To execute the GAS, please configure three variables.

• DAYS_TO_SYNC: To sync events 30 days from now, please set 30.
• CALENDAR_IDS: Email address mapping of source calendar ID and guest calendar ID
• SLACK_WEBHOOK_URL: There is something wrong, error will be notified to this Slack channel.

Set up trigger

To execute the GAS automatically, please set up the trigger

Edit > Current project triggers

• Run: main
• Events: Time-driven