%%%-------------------------------------------------------------------
%%% @author cheese
%%% @copyright (C) 2016, <COMPANY>
%%% @doc
%%%
%%% @end
%%% Created : 27. Apr 2016 13:48
%%%-------------------------------------------------------------------
-module(application_info).
-author("cheese").

%% API
-export([init/1, get_start_time/0, get_version/0, add_key_value/2, get_value/1]).

init(Version) ->
  ets:new(application_info, [set, named_table,public]),
  ets:insert(application_info, {start_time, calendar:local_time()}),
  ets:insert(application_info, {version, Version}),
  IP = socket_utilites:get_gurrent_ip(),
  ets:insert(application_info, {current_ip, IP}),
  {IP1, IP2, IP3, IP4} = IP,
  IPSTR  = list_to_binary(io_lib:format("~w.~w.~w.~w", [IP1, IP2, IP3, IP4])),
  ets:insert(application_info, {current_ip_str, IPSTR}).


get_start_time() ->
  get_value(start_time).

get_version() ->
  get_value(version).


add_key_value(Key, Value) ->
  ets:insert(application_info, {Key, Value}).

get_value(Key) ->
  case ets:lookup(application_info, Key) of
    [] ->
      undefined;
    [{Key, Value} | _] ->
      Value
  end.