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Elixir Z-Wave library
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lib/grizzly/zwave/commands/user_code_set.ex
defmodule Grizzly.ZWave.Commands.UserCodeSet do
@moduledoc """
UserCodeSet sets the user code
Params:
* `:user_id` - the id of the user code (required)
* `:user_id_status` - the status if the user id slot (required)
* `:user_code` - a 4 - 10 user code pin in string format (required)
"""
@behaviour Grizzly.ZWave.Command
alias Grizzly.ZWave.{Command, DecodeError}
alias Grizzly.ZWave.CommandClasses.UserCode
@type param ::
{:user_id, byte()}
| {:user_id_status, UserCode.user_id_status()}
| {:user_code, String.t()}
@impl true
@spec new([param()]) :: {:ok, Command.t()}
def new(params) do
command = %Command{
name: :user_code_set,
command_byte: 0x01,
command_class: UserCode,
params: params,
impl: __MODULE__
}
{:ok, command}
end
@impl true
@spec encode_params(Command.t()) :: binary()
def encode_params(command) do
user_id = Command.param!(command, :user_id)
user_id_status = Command.param!(command, :user_id_status)
user_code = Command.param!(command, :user_code)
<<user_id, UserCode.user_id_status_to_byte(user_id_status)>> <> user_code
end
@impl true
@spec decode_params(binary()) :: {:ok, [param()]} | {:error, DecodeError.t()}
def decode_params(<<user_id, user_id_status_byte, user_code_binary::binary>>) do
case UserCode.user_id_status_from_byte(user_id_status_byte) do
{:ok, user_id_status} ->
{:ok,
[
user_id: user_id,
user_id_status: user_id_status,
user_code: user_code_binary
]}
{:error, %DecodeError{}} = error ->
error
end
end
end