defmodule NullaWeb.Generic.WebfingerController do
  use NullaWeb, :controller
  alias Nulla.Actors
  alias Nulla.Actors.Actor
  alias NullaWeb.Generic.WebfingerJSON

  def index(conn, %{"resource" => resource}) do
    case Regex.run(~r/^acct:(.+)$/, resource) do
      [_, acct] ->
        case Actors.get_actor_by(acct: acct) do
          nil ->
            conn
            |> put_resp_content_type("text/plain")
            |> send_resp(404, "")

          %Actor{} = actor ->
            json(conn, WebfingerJSON.show(actor))
        end

      _ ->
        conn
        |> put_resp_content_type("text/plain")
        |> send_resp(400, "")
    end
  end

  def index(conn, _params) do
    conn
    |> put_resp_content_type("text/plain")
    |> send_resp(400, "")
  end
end