%% @doc Supervisor for the geocoding application.

-module(geocoding_sup).
-vsn("1").
-behaviour(supervisor).

%% Access from supervisor.
-export([start_link/0]).

%% supervisor API.
-export([init/1]).

-define(SHUTDOWN_DELAY, 5000).
% no more than 5 restarts per second.
-define(MAX_RESTARTS, 5).
-define(MAX_RESTARTS_PERIOD, 1).

%% @doc Start the supervisor.
-spec start_link() -> {ok, pid()} | {error, any()}.
start_link() -> supervisor:start_link({local, ?MODULE}, ?MODULE, []).

%% @doc Supervisor init callback.
init(_Args) ->
  GeocodingChildSpec = {geocoding, % id
                        {geocoding, start_link, []}, % init function
                        transient, % restart children that crash
                        ?SHUTDOWN_DELAY, worker,
                        [geocoding] % module
                       },
  RestartStrategy = {one_for_one, ?MAX_RESTARTS, ?MAX_RESTARTS_PERIOD},
  {ok, {RestartStrategy, [GeocodingChildSpec]}}.