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elixir_script

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ElixirScript: compiles Elixir code to JavaScript

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elixir_script lib elixir_script watcher.ex
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lib/elixir_script/watcher.ex 

defmodule ElixirScript.Watcher do

  use GenServer

  require Logger



  @moduledoc """

  Watches the input folder for changes and calls the ElixirScript compiler

  """





  def start_link(input, options) do

    GenServer.start_link(__MODULE__, [input: input, options: options])

  end



  def init(args) do

    {:ok, _} = Application.ensure_all_started(:elixir_script)

    {:ok, _} = Application.ensure_all_started(:fs)



    :fs.subscribe()

    {:ok, args}

  end



  def handle_info({_pid, {:fs, :file_event}, {path, event}}, state) do



    try do

      if input_changed?(to_string(path), state) do

        Logger.debug "Event: #{inspect event} Path: #{path}"

        ElixirScript.compile_path(state[:input], state[:options])

      end

    rescue

      x ->

        Logger.error(x.message)

    end



    {:noreply, state}

  end



  defp input_changed?(path, state) do

    file = Path.basename(path)



    case file do

      "." <> _ ->

        false

      _ ->

       path == Path.absname(Path.join([state[:input], file]))

    end

  end

end