Heimbriech Tablet OS - UpdateHandler

local oldPull = os.pullEvent
os.pullEvent = os.pullEventRaw
--Heimbriech OS Update Handler, used to gather Update Details, delete old files, download new Files, and check security.
local Stage = 0
local UpdateCode = nil
local UpdateVersion = settings.get("OS_Version")
start()

function start()
	if Temp_UpdateID == nil then
		shell.run("ErrorHandler","Update ID not Found")
	else
		ReceiveInfo()
	end
end

function ReceiveInfo()
	resp = http.get("pastebin","get","hxRHKpz0","Temp_Updates.txt") --Updates File
	local file = fs.open("Temp_Updates.txt","r")
	local i = 1
	for i = 1, #file.list() do
		if file.readLine((i*3)+1) > UpdateVersion then
			UpdateVersion = file.readLine((i*3)+1)
			UpdateCode = file.readLine((i*3)+3)
		end
	end
	file.close()
	term.clear()
	if UpdateVersion == settings.get("OS_Version") then
		print("Was trying to find new update, but failed to find any new ones")
		print("sending User to Menu")
		CloseHandler("Menu")
	else
		UpdateAlert()
	end
end
function UpdateAlert()
	term.setCursorPos(1,1)
	print("New Update Avaliable!"
	print("Press e to download, otherwise press b to cancel")
	until Stage == 1 or Stage == -1 do
		local input = read()
		if input == "e" then
			Stage = 1
		else if input == "b" then"
			Stage = -1
		end
		input = nil
	end
	if Stage == -1 then
		textutils.slowWrite("Closing Update Handler",7)
		textutils.slowWrite("Starting Login",9)
		sleep(5)
		CloseHandler("Menu")
	else if Stage == 1 then
		print("Starting Update, User Interaction Disabled for time being")
		UpdateSetup()
	end
end

function UpdateSetup()
	print("Setting up update tools")
	resp = http.get("pastebin","get",UpdateCode,"Temp_Update.PRG) --Target Update File
end



function CloseHandler(Resolve)
	if Resolve == "Menu" then
		if settings.get("Security_Login") == "n" then
			shell.run(".Menu_1")
		else
			shell.run(".Login_1")
		end
	else if Resolve == "Restart" then
		shell.run(".ShutdownHandler","Restart","false")
	end
end
os.pullEvent = oldPull