Hay I did this exact thing, too. Not with so much code, I just have a derivative sensor based on humidity, and look for spikes indicating rapid changes in humidity to tell when I showered.

I hope you feel better. Depression stinks. I know from experience.

I had a similar thing with more involved code that told me when the last time I peed was. This is due to a weird psychological quirk I have. If I wake up and look at the exact time, I won’t go back to sleep because my brain says I only have X hours left. So I have to find creative ways of knowing the approximate time, or time relative to some event (last time getting up to use the bathroom in this case).