Measure "flow state"

[muety]

Developers will know that flow state is usually the most productive and satisfying way of working, even though it's hard to get there due to distractions and interruptions. According to the "23 minutes rule" it takes between 20 and 25 minutes to get back into flow after an interruption (referring to the study linked in this blog post).

I'd like to give users a (very rough) measure of their percentage of "flow state" within a certain interval, measured in percent.

My idea is to simply take all > 23 minutes-long consecutive coding segments, subtract 23 minutes and consider the remaining time as flow time. Divide this by total coding time to get the relative percentage.

[PukPukov]

What about using browser? Any google search will make wakapi see segment as non-consecutive, while in reality this search could be very much in the flow.