-- Prosody IM

-- Copyright (C) 2008-2010 Matthew Wild

-- Copyright (C) 2008-2010 Waqas Hussain

-- 

-- This project is MIT/X11 licensed. Please see the

-- COPYING file in the source package for more information.

--

local use_luaevent = prosody and require "core.configmanager".get("*", "use_libevent");

if use_luaevent then

	use_luaevent = pcall(require, "luaevent.core");

	if not use_luaevent then

		log("error", "libevent not found, falling back to select()");

	end

end

local server;

if use_luaevent then

	server = require "net.server_event";

	-- Overwrite signal.signal() because we need to ask libevent to

	-- handle them instead

	local ok, signal = pcall(require, "util.signal");

	if ok and signal then

		local _signal_signal = signal.signal;

		function signal.signal(signal_id, handler)

			if type(signal_id) == "string" then

				signal_id = signal[signal_id:upper()];

			end

			if type(signal_id) ~= "number" then

				return false, "invalid-signal";

			end

			return server.hook_signal(signal_id, handler);

		end

	end

else

	use_luaevent = false;

	server = require "net.server_select";

end

if prosody then

	local config_get = require "core.configmanager".get;

	local defaults = {};

	for k,v in pairs(server.cfg or server.getsettings()) do

		defaults[k] = v;

	end

	local function load_config()

		local settings = config_get("*", "network_settings") or {};

		if use_luaevent then

			local event_settings = {

				ACCEPT_DELAY = settings.event_accept_retry_interval;

				CLEAR_DELAY = settings.event_clear_interval;

				CONNECT_TIMEOUT = settings.connect_timeout;

				DEBUG = settings.debug;

				HANDSHAKE_TIMEOUT = settings.ssl_handshake_timeout;

				MAX_CONNECTIONS = settings.max_connections;

				MAX_HANDSHAKE_ATTEMPTS = settings.max_ssl_handshake_roundtrips;

				MAX_READ_LENGTH = settings.max_receive_buffer_size;

				MAX_SEND_LENGTH = settings.max_send_buffer_size;

				READ_TIMEOUT = settings.read_timeout;

				WRITE_TIMEOUT = settings.send_timeout;

			};

			for k,default in pairs(defaults) do

				server.cfg[k] = event_settings[k] or default;

			end

		else

			local select_settings = {};

			for k,default in pairs(defaults) do

				select_settings[k] = settings[k] or default;

			end

			server.changesettings(select_settings);

		end

	end

	load_config();

	prosody.events.add_handler("config-reloaded", load_config);

end

-- require "net.server" shall now forever return this,

-- ie. server_select or server_event as chosen above.

return server;