E-Bike charged or not based on power drawn from smart plug

I wonder if it is possible to have some kind of indication of the charging state of an E-bike based on the power drawn through a smart plug which does give feedback on its power usage? I would like to use this with the Picture Elements card such that the picture is displayed as a different colour depending on it’s state.

Do you already have a smart plug on the charger? Have you looked at its draw over time?

Here’s charging mine last night: