This is a project to create a Google Calendar integrated status indicator for home office use, based on the original project from TheAlanNix. It has been modified to use a Pimoroni Rainbow HAT instead of a Unicorn HAT Mini because...well, I had one lying around.

This project utilizes the following hardware:

• Raspberry Pi 3b+ (but should work with any Pi)
• Pimoroni Rainbow HAT

• A Google Project with the Calendar API enabled
• The json file from a Native App OAuth Client (not a Service Account Credential)

• Docker installed on your Raspberry Pi

First, you'll need to create a Google Calendar API project. There's a good tutorial here. Download the credentials.json file for the OAuth Client - you'll need it to allow the application to access your Google calendar - and then either copy the file to your data/ directory, or mount the file to the container from the host.

Install the required packages by running sudo pip install -r requirements.txt

Make sure everything works as expected by manually invoking the office_status_indicator.py script.

Once you've confirmed that the configuration is correct, configure the service:

sudo cp office-status.service /etc/systemd/system/
sudo systemctl enable office-status
sudo systemctl start office-status

This method does not currently work with this code as-is; will fix later.

On the Raspberry Pi, run the following command to download and run the container:

docker run -it \
           --name office-status \
           --privileged \
           --restart=always \
           --volume $(pwd)/data:/app/data \
           --volume $(pwd)/data/credentials.json:/app/data/credentials.json:ro \
           alannix/office-status:latest

This will prompt you to visit a URL to authorize the script to have access to your Google Calendar. Once you have gone through the authorization process, you'll receive an authorization code that you'll need to provide back to the application. The authorization code is stored within the container, so you can safely exit (Control + c) and the container will restart and continue to run.

Once the application is authorized, it will check your Google Calendar for events every minute, determine if you're in a meeting, then update the state of the status light accordingly.

You can tweak the operation of the script by providing any of the following environment variables:

• Add steps for creating Native OAuth Client ID
• Get container working with Rainbow HAT (library issue with python3-smbus)