defmodule Grizzly.ZWave.Commands.NodeProvisioningSet do
@moduledoc """
Module for working with the `NODE_PROVISIONING_SET` command
This command adds a node to the node provisioning list.
Params:
* `:seq_number` - the network command sequence number (required)
* `:dsk` - a DSK string for the device see `Grizzly.ZWave.DSK` for more
more information (required)
* `:meta_extensions` - a list of `Grizzly.ZWave.SmartStart.MetaExtension.t()`
(optional default `[]`)
"""
@behaviour Grizzly.ZWave.Command
alias Grizzly.ZWave.{Command, DecodeError, DSK}
alias Grizzly.ZWave.CommandClasses.NodeProvisioning
alias Grizzly.ZWave.SmartStart.MetaExtension
@type param() ::
{:seq_number, Grizzly.ZWave.seq_number()}
| {:dsk, DSK.t()}
| {:meta_extensions, [MetaExtension.extension()]}
@impl true
@spec new([param]) :: {:ok, Command.t()}
def new(params) do
command = %Command{
name: :node_provisioning_set,
command_byte: 0x01,
command_class: NodeProvisioning,
params: params_with_defaults(params),
impl: __MODULE__
}
{:ok, command}
end
@impl true
@spec encode_params(Command.t()) :: binary()
def encode_params(command) do
seq_number = Command.param!(command, :seq_number)
meta_extensions = Command.param!(command, :meta_extensions)
dsk = Command.param!(command, :dsk)
dsk_byte_size = byte_size(dsk.raw)
<<seq_number, 0x00::size(3), dsk_byte_size::size(5)>> <>
dsk.raw <> NodeProvisioning.encode_meta_extensions(meta_extensions)
end
@impl true
@spec decode_params(binary()) :: {:ok, [param()]} | {:error, DecodeError.t()}
# TODO: same problem with no function call
def decode_params(
<<seq_number, _::size(3), dsk_byte_size::size(5),
dsk_binary::binary-size(dsk_byte_size)-unit(8), meta_extensions_binary::binary>>
) do
with {:ok, dsk_string} <- DSK.binary_to_string(dsk_binary),
meta_extensions <- MetaExtension.parse(meta_extensions_binary) do
{:ok,
[
seq_number: seq_number,
dsk: dsk_string,
meta_extensions: meta_extensions
]}
else
{:error, reason} when reason in [:dsk_too_short, :dsk_too_long] ->
{:error, %DecodeError{value: dsk_binary, param: :dsk, command: :node_provisioning_set}}
{:error, _other} ->
{:error,
%DecodeError{
value: meta_extensions_binary,
param: :meta_extension,
command: :node_provisioning_set
}}
end
end
defp params_with_defaults(params) do
defaults = [meta_extensions: []]
Keyword.merge(defaults, params)
end
end