Using timed_effects made it much easier to inspect the zigbee message output of running the sunrise effect, so I tweaked EffectDuration to be as accurate as possible. Unfortunately that revealed some edge cases that didn't fit the existing model which made the conversion function uglier.

To test "timed effects" send a PUT request with

{
  "on": {
    "on": true
  },
  "timed_effects": {
    "effect": "sunrise",
    "duration": 60000
  }
}

Duration is in milliseconds.

One thing that is missing is updating timed_effects.status. Since that can easily lead to concurrency issues I'll keep that out of the scope for now.

Oh, and as a bonus I added the sunset effect 🌆

{
  "on": {
    "on": true
  },
  "timed_effects": {
    "effect": "sunset",
    "duration": 60000
  }
}