%%%-------------------------------------------------------------------
%%% @author Heinz Nikolaus Gies <heinz@licenser.net>
%%% @copyright (C) 2013, Heinz Nikolaus Gies
%%% @doc
%%%
%%% @end
%%% Created : 10 Jan 2013 by Heinz Nikolaus Gies <heinz@licenser.net>
%%%-------------------------------------------------------------------
-module(fifo_db_sup).

-behaviour(supervisor).

%% API
-export([start_link/0, start_child/1, start_child/2, start_child/3]).

%% Supervisor callbacks
-export([init/1]).

-ignore_xref([start_link/0]).

-define(SERVER, ?MODULE).

%%%===================================================================
%%% API functions
%%%===================================================================

start_child(Name) ->
    start_child(Name, []).

start_child(Name, Opts) ->
    {ok, Backend} = application:get_env(fifo_db, backend),
    start_child(Name, Backend, Opts).

start_child(Name, Backend, Opts) ->
    supervisor:start_child(?SERVER, [Name, Backend, Opts]).

%%--------------------------------------------------------------------
%% @doc
%% Starts the supervisor
%%
%% @spec start_link() -> {ok, Pid} | ignore | {error, Error}
%% @end
%%--------------------------------------------------------------------
start_link() ->
    supervisor:start_link({local, ?SERVER}, ?MODULE, []).

%%%===================================================================
%%% Supervisor callbacks
%%%===================================================================

%%--------------------------------------------------------------------
%% @private
%% @doc
%% Whenever a supervisor is started using supervisor:start_link/[2,3],
%% this function is called by the new process to find out about
%% restart strategy, maximum restart frequency and child
%% specifications.
%%
%% @spec init(Args) -> {ok, {SupFlags, [ChildSpec]}} |
%%                     ignore |
%%                     {error, Reason}
%% @end
%%--------------------------------------------------------------------
init([]) ->
    RestartStrategy = simple_one_for_one,
    MaxRestarts = 1000,
    MaxSecondsBetweenRestarts = 3600,

    SupFlags = {RestartStrategy, MaxRestarts, MaxSecondsBetweenRestarts},

    Restart = permanent,
    Shutdown = 2000,
    Type = worker,
    AChild = {fifo_db, {fifo_db, start_link, []},
              Restart, Shutdown, Type, [fifo_db]},

    {ok, {SupFlags, [AChild]}}.

%%%===================================================================
%%% Internal functions
%%%===================================================================