defmodule SyntropyWeb.Api.RecommendationController do
  use SyntropyWeb, :controller

  alias SyntropyWeb.Api.{ControllerHelpers, RecommendationJSON}

  @spec index(Plug.Conn.t(), map()) :: Plug.Conn.t()
  def index(conn, params) do
    limit = ControllerHelpers.limit(params)

    recommendations =
      Syntropy.recent_recommendations(limit)
      |> Enum.map(&RecommendationJSON.recommendation/1)

    json(conn, %{data: recommendations})
  end

  @spec show(Plug.Conn.t(), map()) :: Plug.Conn.t()
  def show(conn, %{"id" => recommendation_id}) do
    case Syntropy.recommendation(recommendation_id) do
      nil -> ControllerHelpers.not_found(conn, "Recommendation", recommendation_id)
      recommendation -> json(conn, %{data: RecommendationJSON.recommendation(recommendation)})
    end
  end
end