Station Controller

-- ** ************************ ** --
-- ** Train Station Controller ** --
-- ** ************************ ** --

local monitor = peripheral.wrap("left")
local stationName = "name1"
local counter = 0
local departureWait = 30
local redstoneSide = "back"

function waitingPrint(counter)
	monitor.setCursorPos(1, 1)
	monitor.clear()

	monitor.setCursorPos(1, 1)
	monitor.write("Welcome to "..stationName.." station")

	monitor.setCursorPos(1, 3)
	monitor.write("Train departed "..counter.." Seconds ago")
end

function departingPrint(counter)
	monitor.setCursorPos(1, 1)
	monitor.clear()

	monitor.setCursorPos(1, 1)
	monitor.write("Welcome to "..stationName.." station")

	monitor.setCursorPos(1, 3)
	monitor.write("Train departing in "..counter.." Seconds")
end


-- Main Program Loop
while true do
	waitingPrint(counter)
	counter = counter + 1
	sleep(1)

	if colors.test(redstone.getBundledInput(redstoneSide), colors.white) then
		sleep(2)
		redstone.setBundledOutput(redstoneSide, colors.orange)
		counter = departureWait

		while counter ~= 0 do
			departingPrint(counter)
			counter = counter - 1
			sleep(1)
		end

		redstone.setBundledOutput(redstoneSide, 0)
		sleep(2)
		redstone.setBundledOutput(redstoneSide, colors.magenta)
		sleep(2)
		redstone.setBundledOutput(redstoneSide, 0)
	end

	if counter == 1000 then
		os.shutdown()
	end
end