Bastu (Swedish for sauna).

A small TypeScript utility that automatically checks your apartment building’s sauna booking calendar for any available slots in the next two weeks. This utility is written for the Aptus app provided by Säkerhetsintergrering.

If a slot opens up, it sends you an email notification so you can book it.

This script is designed to run automatically on a Raspberry Pi using a cron job, making it a set-and-forget sauna slot watcher.

1. nvm use
2. npm install

See .env.example.

1. npm run dev

1. npm run build
2. npm run start

1. Install chromium sudo apt install chromium-browser chromium-codecs-ffmpeg

2. Install packages npm install

3. Build npm run build

4. Open crontab crontab -e

5. Add your a line that will run this job. * * * * * (. ~/Desktop/bastubot/cronjob.env.sh; ~/Desktop/bastubot/checkThisWeek.sh)

   • You can control which week is checked either this week or next week by calling the corresponding script checkThisWeek.sh or checkNextWeek.sh.

   • For example I currently the following

   # Check the current week for either open slots or slots that someone skipped
    0,31 7-22 * * * (. ~/Desktop/bastubot/cronjob.env.sh; ~/Desktop/bastubot/checkThisWeek.sh)
    # Check next week for any slots that open
    15,45 7-22 * * * (. ~/Desktop/bastubot/cronjob.env.sh; ~/Desktop/bastubot/checkNextWeek.sh)
   

   • Why this schedule?
     1. Runs every 30 minutes, offset for balance.
     2. :31 minute mark catches skipped slots (released 30 min after no-shows).
     3. Limits requests to the booking app so requests don't get blocked.

6. Logs will end up in ~/Desktop/bastubot/file.log

I currenlty use Gmail to send emails from and to the same email. This was quite easy to setup and works quite well. I followed this guide.