{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://klangkiste.local/schemas/box_status.schema.json",
  "title": "BoxStatus",
  "type": "object",
  "required": ["box_id", "state", "current_media", "volume"],
  "properties": {
    "box_id": {"type": "string"},
    "state": {"type": "string", "enum": ["IDLE", "PLAYING", "PAUSED"]},
    "current_media": {"type": ["string", "null"]},
    "volume": {"type": "integer", "minimum": 0, "maximum": 100}
  },
  "additionalProperties": false
}