mah simple light manager

--- xXm0dzXx Default Programming API ---
-- All my programs will have this :DD --
----------------------------------------

local x,y = term.getSize()

local function cPrint( txt ) --Version 2.0 of cPrint
	local function printC( text )
		x2,y2 = term.getCursorPos()
		term.setCursorPos(math.ceil((x / 2) - (text:len() / 2)), y2)
		write(text.. "\n")
	end

	if type(txt) == "string" then
		printC( txt )
	elseif type(txt) == "table" then
		for i=1,#txt do
			printC( txt[i] )
		end
	end
end

local function lPrint( txt )
	local x2, y2 = term.getCursorPos()
	term.setCursorPos( (x-(#txt))+1, y2 )
	write( text )
end

local drawingBoard = {
	["A"] = colors.white,
	["B"] = colors.orange,
	["C"] = colors.magenta,
	["D"] = colors.lightBlue,
	["E"] = colors.yellow,
	["F"] = colors.lime,
	["G"] = colors.pink,
	["H"] = colors.gray,
	["I"] = colors.lightGray,
	["J"] = colors.cyan,
	["K"] = colors.purple,
	["L"] = colors.blue,
	["M"] = colors.brown,
	["N"] = colors.green,
	["O"] = colors.red,
	["P"] = colors.black,
}

local function advWrite( pos1, pos2, str )
	for i=1,#str do
		local symb = drawingBoard[ string.sub( str, i, i) ]
		term.setCursorPos( pos1 + (i-1) , pos2 )
		if symb then
			term.setBackgroundColour( symb )
			write(" ")
		end
	end
end

local function setBG( col, colz )
	term.setBackgroundColour( col )
	term.clear()
	term.setCursorPos(1,1)
	term.setTextColour( colz )
end

local function getLines( path )
	local tLines = {}
	local file = fs.open( path, "r" )
	if file then
		line = file.readLine()
		while line do
			tLines[ #tLines+1 ] = line
			line = file.readLine()
		end
		file.close()
	end

	return tLines
end

-- End of API --

local selection = 1

local function newButton( name, sel )
	if selection == sel then
		cPrint( "[ " ..name.. " ]" )
	else
		cPrint( name )
	end
end

os.startTimer( 0 )
while true do
	term.clear()
	term.setCursorPos(1,1)
	cPrint( "xXm0dzXx Light Control" )
	print( string.rep( "-", x ) )
	print()
	term.setTextColour( colors.green )
	newButton( "Turn on lights", 1 )
	newButton( "Turn off lights", 2 )
	print()
	term.setTextColour( colors.red )
	newButton( "Exit", 3 )
	term.setTextColour( colors.white )
	term.setCursorPos( y-1 )
	print( string.rep( "-", x ) )
	lPrint( textutils.formatTime( os.time() ) )

	local event, key = os.pullEvent()
	if event == "key" then
		if key == keys.up then
			if selection ~= 1 then
				selection = selection -1
			end
		elseif key == keys.down then
			if selection ~= 3 then
				selection = selection +1
			end
		elseif key == keys.enter then
			if selection == 1 then
				rs.setOutput( "back", true )
			elseif selection == 2 then
				rs.setOutput( "back", false )
			elseif selection == 3 then
				term.clear()
				term.setCursorPos(1,1)
				print( "AWESOMEOS v1.0.43.34.5.5.63.365.346.53465..35356" )
				error()
			end
		end
	end

	os.startTimer( 0 )
end