defmodule Grizzly.ZWave.Commands.MultiChannelEndpointFind do
@moduledoc """
This command is used to request End Points having a specific Generic or Specific Device Class in End
Points.
Params:
* `:generic_device_class` - a generic device class (required)
* `:specific_device_class` - a specific device class (required)
"""
@behaviour Grizzly.ZWave.Command
alias Grizzly.ZWave.{Command, DecodeError, DeviceClasses}
alias Grizzly.ZWave.CommandClasses.MultiChannel
@type param ::
{:generic_device_class, DeviceClasses.generic_device_class()}
| {:specific_device_class, DeviceClasses.specific_device_class()}
@impl true
@spec new([param()]) :: {:ok, Command.t()}
def new(params) do
command = %Command{
name: :multi_channel_endpoint_find,
command_byte: 0x0B,
command_class: MultiChannel,
params: params,
impl: __MODULE__
}
{:ok, command}
end
@impl true
def encode_params(command) do
generic_device_class = Command.param!(command, :generic_device_class)
generic_device_class_byte = DeviceClasses.generic_device_class_to_byte(generic_device_class)
specific_device_class_byte =
DeviceClasses.specific_device_class_to_byte(
generic_device_class,
Command.param!(command, :specific_device_class)
)
<<generic_device_class_byte, specific_device_class_byte>>
end
@impl true
def decode_params(<<generic_device_class_byte, specific_device_class_byte>>) do
with {:ok, generic_device_class} <-
MultiChannel.decode_generic_device_class(generic_device_class_byte),
{:ok, specific_device_class} <-
MultiChannel.decode_specific_device_class(
generic_device_class,
specific_device_class_byte
) do
{:ok,
[
generic_device_class: generic_device_class,
specific_device_class: specific_device_class
]}
else
{:error, %DecodeError{}} = error ->
error
end
end
end