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Elixir Z-Wave library
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lib/grizzly/command_class/thermostat_setpoint/get.ex
defmodule Grizzly.CommandClass.ThermostatSetpoint.Get do
@moduledoc """
Command module for working with ThermostatSetpoint command class GET command
Command Options:
* `:type` - The set-point type: `:cooling`, `:heating`, or a byte
* `:seq_number` - The sequence number for the Z/IP Packet
* `:retries` - The number of times to resend the command (default 2)
"""
@behaviour Grizzly.Command
alias Grizzly.Packet
alias Grizzly.Command.{EncodeError, Encoding}
alias Grizzly.CommandClass.ThermostatSetpoint
@type t :: %__MODULE__{
seq_number: Grizzly.seq_number(),
type: ThermostatSetpoint.setpoint_type(),
retries: non_neg_integer()
}
@type opt ::
{:seq_number, Grizzly.seq_number()}
| {:type, ThermostatSetpoint.setpoint_type()}
| {:retries, non_neg_integer()}
defstruct type: 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__{type: _type, seq_number: seq_number} = command) do
with {:ok, encoded} <-
Encoding.encode_and_validate_args(command, %{
type: {:encode_with, ThermostatSetpoint, :encode_setpoint_type}
}) do
binary = Packet.header(seq_number) <> <<0x43, 0x02, encoded.type>>
{:ok, binary}
end
end
@spec handle_response(t, Packet.t()) ::
{:continue, t}
| {:done, {:error, :nack_response}}
| {:done, ThermostatSetpoint.setpoint_value()}
| {:retry, 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(_, %Packet{
body: %{command: :report, value: value, command_class: :thermostat_setpoint}
}) do
{:done, {:ok, value}}
end
def handle_response(command, _), do: {:continue, command}
end