defmodule Grizzly.ZWave.Commands.WindowCoveringGet do
@moduledoc """
The WindowCoveringGet command is used to request the status of a specified Windows Covering Parameter.
Params:
* `:parameter_name` - the parameter's name (see Grizzly.ZWave.CommandClasses.WindowCovering for options)
"""
@behaviour Grizzly.ZWave.Command
alias Grizzly.ZWave.{Command, DecodeError}
alias Grizzly.ZWave.CommandClasses.WindowCovering
@type param :: {:parameter_name, WindowCovering.parameter_name()}
@impl Grizzly.ZWave.Command
@spec new([param()]) :: {:ok, Command.t()}
def new(params) do
command = %Command{
name: :window_covering_get,
command_byte: 0x03,
command_class: WindowCovering,
params: params,
impl: __MODULE__
}
{:ok, command}
end
@impl Grizzly.ZWave.Command
@spec encode_params(Command.t()) :: binary()
def encode_params(command) do
parameter_id =
Command.param!(command, :parameter_name) |> WindowCovering.encode_parameter_name()
<<parameter_id>>
end
@impl Grizzly.ZWave.Command
@spec decode_params(binary()) :: {:ok, [param()]} | {:error, DecodeError.t()}
def decode_params(<<parameter_id>>) do
case WindowCovering.decode_parameter_name(parameter_id) do
{:ok, parameter_name} ->
{:ok, [parameter_name: parameter_name]}
{:error, %DecodeError{} = error} ->
{:error, %DecodeError{error | command: :window_covering_get}}
end
end
end