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An API for rewriting sources in an Elixir project. Powered by sourceror.

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rewrite lib hook dot_formatter_updater.ex
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lib/hook/dot_formatter_updater.ex 

defmodule Rewrite.Hook.DotFormatterUpdater do

  @moduledoc """

  A hook that updates the dot-formatter for a `%Rewrite{}` project on changes.

  """



  alias Rewrite.DotFormatter



  @behaviour Rewrite.Hook



  @formatter ".formatter.exs"



  @impl true

  def handle(:new, project) do

    {:ok, %{project | dot_formatter: dot_formatter(project)}}

  end



  def handle({action, files}, project) when action in [:added, :updated] do

    if dot_formatter?(files) do

      {:ok, %{project | dot_formatter: dot_formatter(project)}}

    else

      :ok

    end

  end



  defp dot_formatter(project) do

    case DotFormatter.read(project) do

      {:ok, dot_formatter} -> dot_formatter

      {:error, _error} -> DotFormatter.default()

    end

  end



  defp dot_formatter?(@formatter), do: true

  defp dot_formatter?(files) when is_list(files), do: Enum.member?(files, @formatter)

  defp dot_formatter?(_files), do: false

end