defmodule Bugsnag.Logger do
  require Bugsnag
  require Logger

  @behaviour :gen_event

  def init([]), do: {:ok, []}

  def handle_call({:configure, new_keys}, _state) do
    {:ok, :ok, new_keys}
  end

  def handle_event({_level, gl, _event}, state)
      when node(gl) != node() do
    {:ok, state}
  end

  def handle_event({:error_report, _gl, {_pid, _type, [message | _]}}, state)
      when is_list(message) do
    try do
      error_info = message[:error_info]

      case error_info do
        {_kind, {exception, stacktrace}, _stack} when is_list(stacktrace) ->
          Bugsnag.report(exception, stacktrace: stacktrace)

        {_kind, exception, stacktrace} ->
          Bugsnag.report(exception, stacktrace: stacktrace)
      end
    rescue
      ex ->
        error_message = Exception.format(:error, ex)
        Logger.warn("Unable to notify Bugsnag. #{error_message}")
    end

    {:ok, state}
  end

  def handle_event({_level, _gl, _event}, state) do
    {:ok, state}
  end
end