%%%-------------------------------------------------------------------
%% @doc efka public API
%% @end
%%%-------------------------------------------------------------------

-module(efka_app).

-behaviour(application).

-export([start/2, stop/1]).

start(_StartType, _StartArgs) ->
    io:setopts([{encoding, unicode}]),
    %% 加速内存的回收
    erlang:system_flag(fullsweep_after, 16),
    start_ws_server(),

    efka_sup:start_link().

stop(_State) ->
    ok.

start_ws_server() ->
    {ok, Props} = application:get_env(efka, ws_server),
    Acceptors = proplists:get_value(acceptors, Props, 50),
    MaxConnections = proplists:get_value(max_connections, Props, 10240),
    Backlog = proplists:get_value(backlog, Props, 1024),
    Port = proplists:get_value(port, Props),

    Dispatcher = cowboy_router:compile([
        {'_', [{"/ws", ws_channel, []}]}
    ]),

    TransOpts = [
        {port, Port},
        {num_acceptors, Acceptors},
        {backlog, Backlog},
        {max_connections, MaxConnections}
    ],
    {ok, Pid} = cowboy:start_clear(ws_listener, TransOpts, #{env => #{dispatch => Dispatcher}}),

    lager:debug("[efka_app] websocket server start at: ~p, pid is: ~p", [Port, Pid]).