# Shelly NG Derivation Rules
# Defines reusable rules for deriving property values from other properties

version: "1.0"

derivations:
  # Battery status derivation
  # Note: Charging state requires external power detection, not derivable from percentage
  battery_status:
    description: "Derive battery status from percentage (low/normal only)"
    rule:
      type: threshold
      thresholds:
        - max: 20
          value: "low"
        - value: "normal"

  # Cover status from position
  cover_status_from_position:
    description: "Derive cover status from position"
    rule:
      type: position_status
      closed_value: "closed"
      opened_value: "opened"
      partial_value: "stopped"

  # Lock status from boolean
  lock_status:
    description: "Derive lock status from locked state"
    rule:
      type: boolean_map
      true_value: "locked"
      false_value: "unlocked"