ComputerCraft Clock (NOT MINE)

-- Clock for display on a monitor
-- Author: CecilKilmer
-- Version: 2.0
-- Date: 2024/08/16

-- Min width required (IE: 10:00 PM + Date)
minWidthReq = 10
minHeightReq = 4

-- Figure out where our monitor is
monitorSide = nil
monitor = nil

if peripheral.getType("left") == "monitor" then
	monitorSide = "left"
elseif peripheral.getType("right") == "monitor" then
	monitorSide = "right"
elseif peripheral.getType("top") == "monitor" then
	monitorSide = "top"
elseif peripheral.getType("bottom") == "monitor" then
	monitorSide = "bottom"
elseif peripheral.getType("front") == "monitor" then
	monitorSide = "front"
elseif peripheral.getType("back") == "monitor" then
	monitorSide = "back"
end

screenWidth = 0
screenHeight = 0

-- If we have one, redirect term to it
if monitorSide ~= nil then
	monitor = peripheral.wrap(monitorSide)
	term.redirect(monitor)

	local scale = 5.5

	repeat
		scale = scale - 0.5
		monitor.setTextScale(scale)
		screenWidth, screenHeight = term.getSize()
	until screenWidth > minWidthReq and screenHeight > minHeightReq
end

-- Determine our screen size
screenWidth, screenHeight = term.getSize()
yPos = screenHeight - minHeightReq
yPos = math.floor(yPos / 2)

-- Function to convert Minecraft days to a calendar date
function convertToCalendar(day)
    local year = math.floor(day / 360) + 1 -- Each year has 360 days (12 months * 30 days)
    local month = math.floor((day % 360) / 30) + 1 -- 30 days per month
    local dayOfMonth = (day % 30) + 1
    return dayOfMonth, month, year
end

-- Main loop
while true do
	term.clear()

	-- Get current Minecraft time and day
	local time = os.time()
	local day = os.day()

	-- Format the time and date
	time = textutils.formatTime(time, false)
	local dayOfMonth, month, year = convertToCalendar(day)
	local dateString = string.format("%02d/%02d/%04d", dayOfMonth, month, year)

	-- Calculate positions
	local xPosTime = screenWidth - string.len(time)
	xPosTime = math.ceil(xPosTime / 2)
	local xPosDate = screenWidth - string.len(dateString)
	xPosDate = math.ceil(xPosDate / 2)

	-- Display time and date
	term.setCursorPos(xPosTime + 1, yPos + 1)
	print(time)
	term.setCursorPos(xPosDate + 1, yPos + 3)
	print(dateString)

	sleep(.1)
end