defmodule OpenAI.Client do
  @base_middleware [
    {Tesla.Middleware.BaseUrl, Application.compile_env(
      :oapi_oai,
      :openai_base_url,
      "https://api.openai.com/v1"
    )},
    Tesla.Middleware.JSON
  ]

  def request(data) do
    api_key = Keyword.get(data.opts, :openai_api_key)
    middleware = [
      {Tesla.Middleware.Headers, [
         {"Authorization", "Bearer #{api_key}"}
      ]}
      | @base_middleware
    ]

    tesla = Tesla.client(middleware)

    tesla
    |> Tesla.request(
      method: data.method,
      url: data.url,
      body: data.body)
    |> case do
      {:ok, %Tesla.Env{status: 200, body: body}} ->
        struct = struct(data.response |> Enum.at(0) |> elem(1) |> elem(0))
        resp = Enum.reduce Map.to_list(struct), struct, fn {k, _}, acc ->
          case Map.fetch(body, Atom.to_string(k)) do
            {:ok, v} -> %{acc | k => v}
            :error -> acc
          end
        end
        {:ok, resp}
      {:error, _error} ->
        :error
    end
  end
end