%%%-------------------------------------------------------------------
%% @doc power_gateway public API
%% @end
%%%-------------------------------------------------------------------

-module(power_gateway_app).

-behaviour(application).

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

start(_StartType, _StartArgs) ->
    SupResult = power_gateway_sup:start_link(),
    start_http_server(),
    SupResult.

stop(_State) ->
    ok.

%% internal functions

start_http_server() ->
    {ok, Props} = application:get_env(power_gateway, http_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([
        {'_', [
            %{"/api/[...]", http_protocol, [http_push_handler]}
        ]}
    ]),

    TransOpts = [
        {port, Port},
        {num_acceptors, Acceptors},
        {backlog, Backlog},
        {max_connections, MaxConnections}
    ],

    {ok, Pid} = cowboy:start_clear(http_listener, TransOpts, #{env => #{dispatch => Dispatcher}}),

    lager:debug("[iot_app] the http server start at: ~p, pid is: ~p", [Port, Pid]).