defmodule Grizzly.ZWave.Commands.PowerlevelReport do
@moduledoc """
This command is used to advertise the current power level.
Params:
* `:power_level` - This field indicates the power level value that the
receiving node MUST set.
* `:timeout` - The time in seconds the node should keep the Power level
before resetting to normalPower level.
"""
@behaviour Grizzly.ZWave.Command
alias Grizzly.ZWave.{Command, DecodeError}
alias Grizzly.ZWave.CommandClasses.Powerlevel
@type param :: {:power_level, Powerlevel.power_level()} | {:timeout, non_neg_integer()}
@impl true
@spec new([param()]) :: {:ok, Command.t()}
def new(params) do
command = %Command{
name: :powerlevel_report,
command_byte: 0x03,
command_class: Powerlevel,
params: params,
impl: __MODULE__
}
{:ok, command}
end
@impl true
@spec encode_params(Command.t()) :: binary()
def encode_params(command) do
power_level_byte = Command.param!(command, :power_level) |> Powerlevel.power_level_to_byte()
timeout = Command.param!(command, :timeout)
<<power_level_byte, timeout>>
end
@impl true
@spec decode_params(binary()) :: {:ok, [param()]} | {:error, DecodeError.t()}
def decode_params(<<power_level_byte, timeout>>) do
with {:ok, power_level} <- Powerlevel.power_level_from_byte(power_level_byte) do
{:ok, [power_level: power_level, timeout: timeout]}
else
{:error, %DecodeError{} = error} ->
%DecodeError{error | command: :powerlevel_report}
end
end
end