Editing Module:Sandbox/DannyS712/remind

-- This module powers {{countdown}}.

local p = {}

-- Constants
local lang = mw.language.getContentLanguage()
local getArgs = require('Module:Arguments').getArgs

local function formatMessage(secondsLeft, event, color, refreshLink)
	local timeLeft = lang:formatDuration(secondsLeft, {'years', 'weeks', 'days', 'hours', 'minutes', 'seconds'})
	-- Find whether we are plural or not.
	local isOrAre
	if string.match(timeLeft, '^%d+') == '1' then
		isOrAre = 'is'
	else
		isOrAre = 'are'
	end
	-- Color and bold the numbers, because it makes them look important.
	local timeLeft = string.gsub(timeLeft, '(%d+)', '<span style="color: ' .. (color or '#F00') .. '; font-weight: bold;">%1</span>')
	-- Make the refresh link and join it all together.
	return string.format('There %s %s until %s.%s', isOrAre, timeLeft, event, refreshLink)
end

function p.main(frame)
	local args = getArgs(frame)

	if not (args.year and args.month and args.day) then
		return  '<strong class="error">Error: year, month, and day must be specified</strong>'
	end
	if not (args.reminder) then
		return  '<strong class="error">Error: reminder must be specified</strong>'
	end

	local eventTime = os.time({year=args.year, month=args.month, day=args.day, hour=args.hour, min=args.minute, sec=args.second})
	local timeToStart = os.difftime(eventTime, os.time()) -- (future time - current time)

	if timeToStart > 0 then
		-- Reminder still pending
		return ''
	else
		-- Reminder due
		return args.reminder
	end
end

return p