-- 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 ns_addtimer = require "net.server".addtimer;

local event = require "net.server".event;

local event_base = require "net.server".event_base;

local get_time = os.time;

local t_insert = table.insert;

local t_remove = table.remove;

local ipairs, pairs = ipairs, pairs;

local type = type;

local data = {};

local new_data = {};

module "timer"

local _add_task;

if not event then

	function _add_task(delay, func)

		local current_time = get_time();

		delay = delay + current_time;

		if delay >= current_time then

			t_insert(new_data, {delay, func});

		else

			func();

		end

	end

	ns_addtimer(function()

		local current_time = get_time();

		if #new_data > 0 then

			for _, d in pairs(new_data) do

				t_insert(data, d);

			end

			new_data = {};

		end

		for i, d in pairs(data) do

			local t, func = d[1], d[2];

			if t <= current_time then

				data[i] = nil;

				local r = func(current_time);

				if type(r) == "number" then _add_task(r, func); end

			end

		end

	end);

else

	local EVENT_LEAVE = (event.core and event.core.LEAVE) or -1;

	function _add_task(delay, func)

			local ret = func();

			if ret then

				return 0, ret;

				return EVENT_LEAVE;

			end

		end

		, delay);

	end

end

add_task = _add_task;

return _M;