defmodule TechRadarEditor.RadarController do
  use TechRadarEditor.Web, :controller

  alias TechRadarEditor.RadarDataPoint

  def _make_quadrants(radar_data_points) do
      List.foldl(radar_data_points,
                 %{1 => [], 2 => [], 3 => [], 4 => []},
                 fn(p, acc) -> %{acc | p.quadrant => acc[p.quadrant] ++ [p]} end
                 )
  end

  # http://www.cultivatehq.com/posts/how-to-set-different-layouts-in-phoenix/
  def index(conn, _params) do
    changeset = RadarDataPoint.changeset(%RadarDataPoint{})
    radar_quadrants = _make_quadrants(Repo.all(RadarDataPoint))
    render conn, "index.html", radar_quadrants: radar_quadrants, changeset: changeset, layout: {TechRadarEditor.LayoutView, "radar.html"}
  end

  def create(conn, %{"radar_data_point" => radar_data_point_params}) do
    changeset = RadarDataPoint.changeset(%RadarDataPoint{}, radar_data_point_params)

    case Repo.insert(changeset) do
      {:ok, _radar_data_point} ->
        conn
        |> put_flash(:info, "Radar data point created successfully.")
        |> redirect(to: radar_path(conn, :index), layout: {TechRadarEditor.LayoutView, "radar.html"} )
      {:error, changeset} ->
        render(conn, "new.html", changeset: changeset)
    end
  end

  def delete(conn, %{"id" => id}) do
      radar_data_point = Repo.get!(RadarDataPoint, id)
      Repo.delete!(radar_data_point)

      conn
      |> put_flash(:info, "Radar data point " <> id <> " successfully deleted.")
      |> redirect(to: radar_path(conn, :index), layout: {TechRadarEditor.LayoutView, "radar.html"} )
  end

end