local pposix = assert(require "util.pposix");

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

local logger_set = require "util.logger".setwriter;

module.host = "*"; -- we're a global module

if not config_get("*", "core", "no_daemonize") then

	local function daemonize_server()

		local logwriter;

		local logfilename = config_get("*", "core", "log");

		if logfilename then

			local logfile = io.open(logfilename, "a+");

			if logfile then

				local write, format, flush = logfile.write, string.format, logfile.flush;

				logwriter = function (name, level, message, ...)

							if ... then 

								write(logfile, name, "\t", level, "\t", format(message, ...), "\n");

							else

								write(logfile, name, "\t" , level, "\t", message, "\n");

							end

							flush(logfile);

						end;

			end

		else

			log("debug", "No logging specified, will continue with default");

		end

		local ok, ret = pposix.daemonize();

		if not ok then

			log("error", "Failed to daemonize: %s", ret);

		elseif ret and ret > 0 then

			log("info", "Daemonized to pid %d", ret);			

			os.exit(0);

		else

			if logwriter then

				local ok, ret = logger_set(logwriter);

				if not ok then

					log("error", "Couldn't set new log output: %s", ret);

				end

			end

			log("info", "Successfully daemonized");	

		end

	end

	module:add_event_hook("server-starting", daemonize_server);

end