Entity proxies should have the ability to actively manage state

[zoe-codez]

Context

The automation.managed_switch workflow is very useful, being able to take a callback and list of entities to react to, then turning that into service calls.

automation.managed_switch({
  context,
  entity_id: "switch.dragonfly_lights",
  onUpdate: [officePlants, meetingMode, isHome],
  shouldBeOn() {
    if (!isHome.is_on) {
      return false;
    }
    if (meetingMode.is_on) {
      return true;
    }
    return !automation.time.isBetween("AM1:30", "PM4");
  },
});

Synapse builds on the pattern with SettableConfiguration, which is set on specific properties across the library.

synapse.switch({
  context,
  is_on: {
    current() {
      return !binary_sensor.is_on;
    },
    onUpdate: [binary_sensor],
  },
  name: "Example switch",
});

---

For hass internal domains, this type of functionality should be available directly on the entity proxy.

hass.refBy.id("switch.example").manage({
  current() {
	return true | "on"
  },
  onUpdate: [],
  schedule: ...
})

This will require some manual mapping of domains to specific service calls in order to work correctly