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httparrot

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https://github.com/edgurgel/httparrot

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httparrot lib httparrot redirect_to_handler.ex
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lib/httparrot/redirect_to_handler.ex 

defmodule HTTParrot.RedirectToHandler do

  @moduledoc """

  Redirects to the foo URL.

  """

  use HTTParrot.Cowboy, methods: ~w(GET HEAD OPTIONS)



  def malformed_request(req, state) do

    {url, req} = :cowboy_req.qs_val("url", req, nil)

    if url, do: {false, req, url}, else: {true, req, state}

  end



  def resource_exists(req, state), do: {false, req, state}

  def previously_existed(req, state), do: {true, req, state}



  def moved_permanently(req, url) do

    {{true, url}, req, url}

  end

end