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spotify_ex

2.0.9
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An Elixir wrapper for the Spotify Web API.

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spotify_ex lib spotify authentication_client.ex
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lib/spotify/authentication_client.ex 

defmodule AuthenticationClient do

  @moduledoc false



  alias HTTPoison.Response

  alias HTTPoison.Error



  def post(params) do

    with {:ok, %Response{status_code: _code, body: body}} <- AuthRequest.post(params),

         {:ok, response} <- Poison.decode(body) do

      case response do

        %{"error_description" => error} ->

          raise(AuthenticationError, "The Spotify API responded with: #{error}")



        success_response ->

          {:ok, Spotify.Credentials.get_tokens_from_response(success_response)}

      end

    else

      {:error, %Error{reason: reason}} ->

        {:error, reason}



      _generic_error ->

        raise(AuthenticationError, "Error parsing response from Spotify")

    end

  end

end



defmodule AuthRequest do

  @moduledoc false



  @url "https://accounts.spotify.com/api/token"



  def post(params) do

    HTTPoison.post(@url, params, headers())

  end



  def headers do

    [

      {"Authorization", "Basic #{Spotify.encoded_credentials()}"},

      {"Content-Type", "application/x-www-form-urlencoded"}

    ]

  end

end