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Elixir Z-Wave library
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lib/grizzly/command_class/association/remove.ex
defmodule Grizzly.CommandClass.Association.Remove do
@moduledoc """
Command for working with Association command class REMOVE command
Command Options:
* `:group` - The association group
* `:nodes` - List of node ids to remove from the group
* `:seq_number` - The sequence number used in the Z/IP packet
* `:retries` - The number of attempts to send the command (default 2)
"""
@behaviour Grizzly.Command
alias Grizzly.{Node, Packet}
alias Grizzly.Command.{EncodeError, Encoding}
@type t :: %__MODULE__{
group: byte,
nodes: associated_nodes,
seq_number: Grizzly.seq_number(),
retries: non_neg_integer()
}
@type associated_nodes :: [Node.node_id()]
@type opts ::
{:group, byte}
| {:nodes, associated_nodes}
| {:seq_number, Grizzly.seq_number()}
| {:retries, non_neg_integer()}
defstruct group: nil,
nodes: nil,
seq_number: nil,
retries: 2,
exec_state: nil
@spec init([opts]) :: {:ok, t}
def init(opts) do
{:ok, struct(__MODULE__, opts)}
end
@spec encode(t) :: {:ok, binary} | {:error, EncodeError.t()}
def encode(%__MODULE__{group: group, nodes: nodes, seq_number: seq_number} = command) do
with {:ok, _} <- Encoding.encode_and_validate_args(command, %{group: :byte, nodes: [:byte]}) do
binary = Packet.header(seq_number) <> <<0x85, 0x04, group>> <> :erlang.list_to_binary(nodes)
{:ok, binary}
end
end
@spec handle_response(t, Packet.t()) ::
{:continue, t()}
| {:done, {:error, :nack_response}}
| {:done, :ok}
| {:retry, t()}
| {:queued, t()}
def handle_response(
%__MODULE__{seq_number: seq_number},
%Packet{
seq_number: seq_number,
types: [:ack_response]
}
) do
{:done, :ok}
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(
%__MODULE__{seq_number: seq_number} = command,
%Packet{
seq_number: seq_number,
types: [:nack_response, :nack_waiting]
} = packet
) do
if Packet.sleeping_delay?(packet) do
{:queued, command}
else
{:continue, command}
end
end
def handle_response(command, _), do: {:continue, command}
end