Hello everyone!
I’ve made great progress today, and I’ve merged into master the first part of this development: triggering a scene based on an event that is happening or about to end.
Concretely, what is possible to do
- « Send me a message 15 minutes before going to the gym »
- « Wake me up 1 hour before a work event »
- « If the event ‹ Disneyland › starts in 1 hour AND the house is not empty » → Flash in the living room to warn us that we need to leave!
- « Start the heating when there is an event that starts and is called ‹ heating ›, and stop the heating when there is an event that ends and is called ‹ heating › »
These are just a few examples, but of course the possibilities are endless!
What does it look like?
What is powerful is that it is possible to retrieve in the actions the event that triggered the scene! 
and this gives:
I can already see @lmilcent telling me: « but wait? are we going to be able to use the sensor values of the triggers in there?? » Maybe in the future yes!! 
Video demonstration
I recorded a video that shows an example 
How to test?
I made a Docker build on the :dev tag as usual.
The Docker image is as follows:
gladysassistant/gladys:dev
I welcome any feedback, if you have time to test this weekend that would be great
For the second part of the development, it will be later, I will keep you informed of the progress!