yemux

defmodule Yemux do

  alias Yemux.{Error, Session}

  @moduledoc """
  Documentation for `Yemux`.
  """

  def main(dispatch, args)
  def main(:yemux, args) do
    _yemux(args)
  end

  defp _yemux(args)
  defp _yemux([yml_filename, cfg_filename]) do
    case YamlElixir.read_from_file(cfg_filename) do
      {:ok, config} -> _yemux([yml_filename], config)
      {:error, %{message: message}} -> raise Error.BadYamlFile, message
    end
  end
  defp _yemux([filename], config\\nil) do
    case YamlElixir.read_from_file(filename) do
      {:ok, yaml} -> _yemux_create(filename, yaml, config)
      {:error, %{message: message}} -> raise Error.BadYamlFile, message
    end
  end

  defp _yemux_create(filename, yaml, config \\ nil) do
    case Session.new(filename, yaml, config) |> Session.create do
      {:ok, list} -> list |> List.flatten |> Enum.join("\n")
      {:error, message} -> raise Error.BadSessionSpec, message
    end
  end
end
# SPDX-License-Identifier: Apache-2.0