defmodule ExVideoFactory.Client do
  use HTTPotion.Base

  @moduledoc """
  Documentation for ExVideoFactory.Client.
  """

  @prod_endpoint "https://gatewayvf.webservices.francetelevisions.fr/v1/"
  @preprod_endpoint "https://gatewayvf.webservices.ftv-preprod.fr/v1/"

  def process_url(url, options) do
    case Application.get_env(:ex_video_factory, :mode, :prod) do
      :preprod -> @preprod_endpoint <> url
      :prod -> @prod_endpoint <> url
      :custom -> Application.get_env(:ex_video_factory, :endpoint) <> url
      _ -> raise(ArgumentError, message: "invalid argument mode, valid are :prod or :preprod")
    end
    |> prepend_protocol
    |> append_query_string(options)
  end

  defp prepend_protocol(url) do
    if url =~ ~r/\Ahttps?:\/\// do
      url
    else
      "http://" <> url
    end
  end

  defp append_query_string(url, options) do
    if options[:query] do
      url <> "?#{URI.encode_query(options[:query])}"
    else
      url
    end
  end

  def process_request_headers(headers) do
    Keyword.put(headers, :Accept, "application/json")
  end

  def process_response_body(body) do
    body
    |> Poison.decode!()
  end
end