defmodule Elstat.Adapter.Elixire do
  @behaviour Elstat.Adapter

  use GenServer
  require Logger

  def start_link(service_opts) do
    GenServer.start_link(__MODULE__, service_opts, [])
  end

  def init(service_opts) do
    Logger.info("Elixire adapter started with #{inspect service_opts}")
    {:ok, %{}}
  end

  def check(args) do
    addr = args.base_url

    req_start = :erlang.monotonic_time(:millisecond)
    resp = HTTPoison.get!("#{addr}/api/hello")
    req_end = :erlang.monotonic_time(:millisecond)

    delta = req_end - req_start
    
    {:ok, {:map, %{
              status: resp.status_code == 200,
              latency: delta,
           }}}
  end
 
end