local pVersion = 2.0
local pEdition = "Home"
local pAuthServer = 25
local sendersID = os.getComputerID()

function drawGUI()
	term.clear()
	term.setCursorPos(1,1)
	print("---------------------------------------------------")
	print("-                                                 -")
	print("-                                                 -")
	print("-                                                 -")
	print("-                                                 -")
	print("-                                                 -")
	print("-                                                 -")
	print("-                                                 -")
	print("-                                                 -")
	print("-                                                 -")
	print("-                                                 -")
	print("-                                                 -")
	print("-                                                 -")
	print("-                                                 -")
	print("-                                                 -")
	print("---------------------------------------------------")
	print("->>                                             <<-")
	print("---------------------------------------------------")

	term.setCursorPos(4,17)
	write("PriestleyOS ")
	write(pEdition)
	write(" ")
	write(pVersion)
end

function PP2Receive(packetwait)
		mastID, PP2Packet = rednet.receive("PP2", packetwait)
		sep = "%s"
        t = {}
		i = 1
		for str in string.gmatch(PP2Packet, "([^"..sep.."]+)") do
                t[i] = str
                i = i + 1
        end
		pp2S = #t
		t[1] = tonumber(t[1])
		t[2] = tonumber(t[2])

		if pp2S == 3 then
			return t[1], t[2], t[3]
		end
		outputMessage = ""
		counter = 3
		while counter <= pp2S do
			outputMessage = outputMessage .. t[counter] .. " "
			counter = counter + 1
		end
		return t[1], t[2], outputMessage
end

function PP2SendDirect(computerID, destinationID, message)
	createdPacket = computerID .. " " .. destinationID .. " " .. message
	rednet.send(destinationID, createdPacket, "PP2")
end

function PP2Send(computerID, destinationID, message)
	createdPacket = computerID .. " " .. destinationID .. " " .. message
	rednet.broadcast(createdPacket, "PP2m")
end

function posLogin()
	local serverStatus = false
	local serverResponse = "fail"

	drawGUI()

	while serverStatus == false do
		term.setCursorPos(4,4)
		write("[=======================]")
		term.setCursorPos(4,5)
		write("[   PriestleyOS Login   ]")
		term.setCursorPos(4,6)
		write("[=======================]")
		term.setCursorPos(4,7)
		write("[Username:              ]")
		term.setCursorPos(4,8)
		write("[Password:              ]")
		term.setCursorPos(4,9)
		write("[=======================]")
		term.setCursorPos(4,10)
		write("[Server Status:         ]")

		while serverStatus == "fail" do
			PP2SendDirect(sendersID, pAuthServer, "ping")
			sleep(0.2)
			ignore, ignore, serverResponse = PP2Receive(3)
			if serverResponse == "success" then
				term.setCursorPos(4,17)
				write("ONLINE   ")
				break
			end
			term.setCursorPos(4,17)
			write("OFFLINE")
			term.setCursorPos(4,12)
			write("Retrying...")
		end


	end
end



posLogin()