TLDR; see QUESTION below
Consider a light in your entry hall. When you arrive home, you might want to trigger the light on for a few minutes. If you’re already home, you might have an indoor PIR trigger the light as you walk toward the hall. Maybe you want the light to turn on for a time when triggered by your doorbell, your garage door, or your alarm. You can control the light with a physical switch, or with voice commands. And you might also bundle the light in scenes or groups that include other lights.
What if you want the light to stay on while you clean the floor? How do you stop the triggers that would turn it off in a few minutes? Or, temporarily you want the light to stay off when it would normally be triggered on. What if you normally only want to trigger the light at night, but right now you want to trigger it day or night?
Code that controls your light could be scattered in scenes, groups, automations.yaml, node red, mqtt etc.
How do you make it all work cleanly?
Given: A physical switch will directly control the light
Thesis: Everything else can control the light through two meta-entities: light-mode and light-future
light-mode determines when triggers are active: stay-on / stay-off / triggered-night-only / triggered-always /
So when a trigger occurs (motion, door, alarm, etc) the automation checks light-mode to determine if it should do anything e.g. if light mode is triggered-night-only but it’s currently daytime, the trigger does nothing. If it’s nighttime, the automation would turn on the light and then set another meta-entity called light-future that would turn off the light after, say 5 minutes
If more triggers occur before light-future executes, they could simply change light-future e.g. more motion extends the light off time
If light-mode changes, for example to stay-off, before light-future executes, an automation could cancel light-future
light-mode could be an
light-future needs to trigger an automation when the time is up. I’ve never used
input_datetime – would that work or is there a better choice?
Any other ideas would be appreciated.