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

  alias SyntropyWeb.Api.{ControllerHelpers, HistoryJSON}

  @spec index(Plug.Conn.t(), map()) :: Plug.Conn.t()
  def index(conn, params) do
    limit = ControllerHelpers.limit(params)
    json(conn, %{data: Enum.map(Syntropy.recent_snapshots(limit), &HistoryJSON.snapshot/1)})
  end

  @spec show(Plug.Conn.t(), map()) :: Plug.Conn.t()
  def show(conn, %{"id" => snapshot_id}) do
    case Syntropy.snapshot(snapshot_id) do
      nil -> ControllerHelpers.not_found(conn, "Snapshot", snapshot_id)
      snapshot -> json(conn, %{data: HistoryJSON.snapshot(snapshot)})
    end
  end
end