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Elixir Z-Wave library
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lib/grizzly/command_class/node_provisioning/get.ex
defmodule Grizzly.CommandClass.NodeProvisioning.Get do
@moduledoc """
Command Options:
* `:dsk` - A DSK string to look up the device in the provisioning
list. See `Grizzly.DSK` for more information
* `:seq_number` - The sequence number of the Z/IP Packet
* `:retries` - The number of times to try to send the command (default 2)
"""
@behaviour Grizzly.Command
alias Grizzly.{Packet, DSK}
alias Grizzly.Command.{EncodeError, Encoding}
alias Grizzly.SmartStart.MetaExtension
@type t :: %__MODULE__{
dsk: DSK.dsk_string(),
seq_number: Grizzly.seq_number(),
retries: non_neg_integer()
}
@type opt ::
{:dsk, DSK.dsk_string()}
| {:seq_number, Grizzly.seq_number()}
| {:retries, non_neg_integer()}
defstruct dsk: nil, seq_number: nil, retries: 2
@spec init([opt]) :: {:ok, t}
def init(opts) do
{:ok, struct(__MODULE__, opts)}
end
@spec encode(t) :: {:ok, binary} | {:error, EncodeError.t()}
def encode(%__MODULE__{dsk: _dsk, seq_number: seq_number} = command) do
with {:ok, encoded} <-
Encoding.encode_and_validate_args(command, %{
dsk: {:encode_with, DSK, :string_to_binary}
}) do
binary = Packet.header(seq_number) <> <<0x78, 0x05, seq_number, 0x10>> <> encoded.dsk
{:ok, binary}
end
end
@spec handle_response(t, Packet.t()) ::
{:continue, t}
| {:done, {:error, :nack_response | :not_found}}
| {:done, {:ok, %{dsk: DSK.dsk_string(), meta_extensions: [MetaExtension.t()]}}}
def handle_response(%__MODULE__{seq_number: seq_number} = command, %Packet{
seq_number: seq_number,
types: [:ack_response]
}) do
{:continue, command}
end
def handle_response(%__MODULE__{seq_number: seq_number, retries: 0}, %Packet{
seq_number: seq_number,
types: [:nack_response]
}) do
{:done, {:error, :nack_response}}
end
def handle_response(%__MODULE__{seq_number: seq_number, retries: n} = command, %Packet{
seq_number: seq_number,
types: [:nack_response]
}) do
{:retry, %{command | retries: n - 1}}
end
def handle_response(
_command,
%Packet{
body: %{
command_class: :node_provisioning,
command: :report,
dsk: dsk,
meta_extensions: extensions
}
}
) do
case dsk do
:not_found ->
{:done, {:error, :not_found}}
_dsk ->
{:done, {:ok, %{dsk: dsk, meta_extensions: extensions}}}
end
end
def handle_response(command, _), do: {:continue, command}
end