#LIB()

local lastMessage = ""
local nativepullEvent = os.pullEventRaw
local tListen = { }

return
{
#BEGINFUNCTION()
#FUNCTION(closeAllPort)
	closeAllPort = function(modem)
		if modem.nOpenPorts <= 0 then
			return false
		end
	
		for _, nPort in pairs(modem.tOpenPorts) do
			modem.raw.close(nPort)
		end
		
		modem.nOpenPorts = 0
		modem.tOpenPorts = { }
		
		return true
	end,
#FUNCTION(closePort)
	closePort = function(modem, nPort)
		if modem.nOpenPorts > 0 and modem.tOpenPorts[nPort] then
			modem.raw.close(nPort)
			modem.nOpenPorts = modem.nOpenPorts - 1
			modem.tOpenPorts[nPort] = false
			
			return true
		end
		
		return false
	end,
#FUNCTION(listen)
	listen = function(modem, nPort)
		smodem = modem
	
		if not modem.tOpenPorts[nPort] then
			return false
		end
	
		tListen[modem.sSide][nPort] = math.random(1, 2147483646)
		
		return function()
				while tListen[modem.sSide][nPort] do
					local sEvent, vData, nRPort, nReplyPort, tMessage, nDistance
						= coroutine.yield("modem_message")
						
					if sEvent == "modem_message" and 
						vData == modem.sSide and
						nRPort == nPort then
						os.queueEvent(
							"net_message",
							tListen[modem.sSide][nPort],
							nReplyPort,
							tMessage,
							nDistance)
					end
				end
			end, tListen[modem.sSide][nPort]
	end,
	listenEvent = "net_message",
#FUNCTION(listenStop)
	listenStop = function(modem, nPort)
		tListen[modem.sSide][nPort] = nil
	end,
#FUNCTION(listenStopAll)
	listenStopAll = function(modem)
		tListen[modem.sSide] = { }
	end,
#FUNCTION(loadModem)
	loadModem = function(sSide)
		if peripheral.isPresent(sSide) and
		   peripheral.getType(sSide) == "modem" then
			tListen[sSide] = { }
			
			return
			{
				isWireless = peripheral.call(sSide, "isWireless"),
				raw = peripheral.wrap(sSide),
				sSide = sSide,
				
				nOpenPorts = 0,
				tOpenPorts = { }
			}
		end
		
		return false
	end,
#FUNCTION(openPort)
	openPort = function(modem, nPort)
		if modem.nOpenPorts < 128 and not modem.tOpenPorts[nPort] then
			modem.raw.open(nPort)
			modem.nOpenPorts = modem.nOpenPorts + 1
			modem.tOpenPorts[nPort] = true
			
			return true
		end
		
		return false
	end,
#FUNCTION(sendRaw)
	sendRaw = function(
		modem,
		nPort,
		nRepPort,
		vMessage)
		modem.raw.transmit(nPort, nRPort, vMessage)
	end,
#FUNCTION(sendRednet)
	sendRednet = function(
		modem,
		nPort,
		replyPort,
		nRecipient,
		vMessage,
		sProtocol)
		if sProtocol == nil then
			sProtocol = ""
		end
		
		modem.raw.transmit(nPort, replyPort
		{
			nRecipient = nRecipient,
			message = vMessage,
			nMessageID = math.random(1, 2147483647),
			sProtocol = sProtocol
		})
		
		return true
	end
#ENDFUNCTION()
}