Ask HN: Looking for a Programable Text Editor

I’m not sure if this exists, but I’m curious what would be the closest thing available to an “Event based programmable text editor”.

Imagine this scenario:

    - Every monday at 10, the editor, would inject a checklist into your work log with some weekly checks you do at work.
        - Some of the checks are manual, some have inputs to accept extra data
        - Some are automated because you wrote a snippet of code for doing such check
        - On save, convert to json and send to someone via email
    - Every time you do this, you need to do a followup around 2days later with the person that received the checklist. They will provide a paragraph with some feedback that you need to save. To do so, your editor, already injected a form into your work log for doing so.

This is just an example but could go very far I imagine.