CustomBiosStart

function yN()
	local n=1
	while true do
		local x, y=term.getCursorPos()
		term.clearLine()
		if n==1 then write(">No<   Yes") else write (" No   >Yes<") end
		term.setCursorPos(x, y)
		a, b=os.pullEvent("key")
		if b==263 and n==2 then n=1 end
		if b==262 and n==1 then n=2 end
		if b==257 then
			print("")
			if n==1 then return true end
			if n==2 then return false end
		end
	end
end

if fs.exists("/CB/CustomBiosUpdate") then
	shell.run("delete /CB/CustomBiosUpdate")
end

term.setTextColour(colours.green)
print ("Checking for Update")
if not fs.exists("/CB/Beta") then
	term.setTextColour(colours.yellow)
	local beta = fs.open("/CB/Beta", "w")
	print("Do you want to use BETAs ?")
	if yN() == false then
		beta.write("true")
	else
		beta.write("false")
	end
	beta.close()
end
term.setTextColour(colours.white)


local beta = fs.open("/CB/Beta", "r")
if beta[0] == "false" then
	shell.run("pastebin get wccYFDn4 /CB/CustomBiosUpdate")
else
	shell.run("pastebin get ccbrWFpb /CB/CustomBiosUpdate")
end

term.setTextColour(colours.red)
local update = fs.open("/CB/CustomBiosUpdate", "r")
local curent = fs.open("/CB/Files/CustomBiosCurrent", "r")

if not fs.exists("/CB/Files/CustomBiosCurrent") or update[0] ~= curent[0] then
	term.setTextColour(colours.green)
	print("An update is available")
	os.sleep(0.5)
	print("Updating...")
	os.sleep(1)
	if fs.exists("/CB/Files/CustomBiosCurrent") then
		curent.close()
	end
	update.close()
	shell.run("delete /CB/Files/")
	shell.run("mkdir /CB/Files/")
	term.setTextColour(colours.white)
	if beta[0] == "false" then
		shell.run("pastebin get 7fzEVSp0 /CB/Files/CustomBios")
	else
		shell.run("pastebin get rMqkrB8f /CB/Files/CustomBios")
	end
	shell.run("copy /CB/CustomBiosUpdate /CB/Files/CustomBiosCurrent")
	term.setTextColour(colours.green)
	print("Updated.")
	os.sleep(1)
else
	curent.close()
	update.close()
end

shell.run("/CB/Files/CustomBios")