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Elixir Z-Wave library
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lib/grizzly/zwave/commands/failed_node_remove_status.ex
defmodule Grizzly.ZWave.Commands.FailedNodeRemoveStatus do
@moduledoc """
This command reports on the attempted removal of a presumed failed node.
Params:
* `:node_id` - the id of the node which removal for failure was attempted
* `:seq_number` - the sequence number of the removal command
* `:status` - whether the presumed failed node was removed
"""
@behaviour Grizzly.ZWave.Command
alias Grizzly.ZWave
alias Grizzly.ZWave.{Command, DecodeError}
alias Grizzly.ZWave.CommandClasses.NetworkManagementInclusion
@type status() :: :done | :failed_node_not_found | :failed_node_remove_fail
@type param() :: {:node_id, char()} | {:seq_number, ZWave.seq_number()} | {:status, status}
@impl Grizzly.ZWave.Command
@spec new([param()]) :: {:ok, Command.t()}
def new(params) do
command = %Command{
name: :failed_node_remove_status,
command_byte: 0x08,
command_class: NetworkManagementInclusion,
params: params,
impl: __MODULE__
}
{:ok, command}
end
@impl Grizzly.ZWave.Command
@spec encode_params(Command.t()) :: binary()
def encode_params(command) do
seq_number = Command.param!(command, :seq_number)
node_id = Command.param!(command, :node_id)
status_byte = Command.param!(command, :status) |> encode_status()
<<seq_number, status_byte, node_id>>
end
@impl Grizzly.ZWave.Command
@spec decode_params(binary()) :: {:ok, [param()]} | {:error, DecodeError.t()}
def decode_params(<<seq_number, status_byte, node_id>>) do
do_decode_params(seq_number, status_byte, node_id)
end
def decode_params(<<seq_number, status_byte, node_id::size(16)>>) do
do_decode_params(seq_number, status_byte, node_id)
end
defp do_decode_params(seq_number, status_byte, node_id) do
with {:ok, status} <- decode_status(status_byte) do
{:ok, [seq_number: seq_number, node_id: node_id, status: status]}
else
{:error, %DecodeError{} = error} ->
error
end
end
defp encode_status(:failed_node_not_found), do: 0x00
defp encode_status(:done), do: 0x01
defp encode_status(:failed_node_remove_fail), do: 0x02
defp decode_status(0x00), do: {:ok, :failed_node_not_found}
defp decode_status(0x01), do: {:ok, :done}
defp decode_status(0x02), do: {:ok, :failed_node_remove_fail}
defp decode_status(byte),
do: {:error, %DecodeError{value: byte, param: :status, command: :failed_node_remove_status}}
end