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islands_board_cache lib islands board cache server.ex
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lib/islands/board/cache/server.ex

defmodule Islands.Board.Cache.Server do
@moduledoc """
Process that generates a list of `boards` and caches it for expedient access.
"""
use GenServer
use PersistConfig
alias __MODULE__
alias Islands.Board.Cache.Generator
alias Islands.Board
@timeout get_env(:timeout)
@type from :: GenServer.from()
@type state :: [Board.t()]
@spec start_link(term) :: GenServer.on_start()
def start_link(:ok), do: GenServer.start_link(Server, :ok, name: Server)
## Callbacks
@spec init(term) :: {:ok, state, timeout}
def init(:ok), do: {:ok, Generator.gen_boards(), @timeout}
@spec handle_call(atom, from, state) :: {:reply, term, state, timeout}
def handle_call(:get_board, _from, boards) do
{:reply, Enum.random(boards), boards, @timeout}
end
def handle_call(:board_count, _from, boards) do
{:reply, length(boards), boards, @timeout}
end
end