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use_case

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A way to increase Elixir projects readability and maintenance based on Use Cases and Interactors.

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use_case lib use_case.ex
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lib/use_case.ex 

defmodule UseCase do

  def call(interactor, input, opts) when is_atom(interactor), do: interactor.call(input, opts)



  def call(interactor, input) when is_atom(interactor), do: interactor.call(input, [])



  def call(%interactor{} = input, opts), do: interactor.call(input, opts)



  def call(%interactor{} = input), do: interactor.call(input, [])



  def call!(interactor, input, opts) when is_atom(interactor),

    do: interactor.call(input, opts) |> bang!



  def call!(interactor, input) when is_atom(interactor),

    do: interactor.call(input, []) |> bang!



  def call!(%interactor{} = input, opts),

    do: interactor.call(input, opts) |> bang!



  def call!(%interactor{} = input),

    do: interactor.call(input, []) |> bang!



  defp bang!(output) do

    case output do

      {:ok, result} -> result

      {:error, error} -> raise(error)

      otherthing -> otherthing

    end

  end

end