Module:Countdown

-- This module powers {{countdown}}.

local p = {}

-- Constants

local lang = mw.language.getContentLanguage()

local getArgs = require('Module:Arguments').getArgs

local function formatMessage(secondsLeft, event, color)

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.

timeLeft = string.gsub(timeLeft, '(%d+)', '%1')

return string.format('There %s %s until %s.', isOrAre, timeLeft, event)

end

function p.main(frame)

local args = getArgs(frame)

if not (args.year and args.month and args.day) then

return 'Error: year, month, and day must be specified'

end

local timeArgs = {year=args.year, month=args.month, day=args.day, hour=args.hour, min=args.minute, sec=args.second}

for k,v in pairs(timeArgs) do

if not tonumber(v) then

error('Argument ' .. k .. ' could not be parsed as a number: ' .. v)

end

end

local eventTime = os.time(timeArgs)

local timeToStart = os.difftime(eventTime, os.time()) -- (future time - current time)

local text

if timeToStart > 0 then

-- Event has not begun yet

text = formatMessage(timeToStart, args.event or 'the event begins', args.color)

elseif args.duration then

local timeToEnd

if args['duration unit'] then

-- Duration is in unit other than seconds, use formatDate to add

timeToEnd = tonumber(lang:formatDate('U', '@' .. tostring(timeToStart) .. ' +' .. tostring(args.duration) .. ' ' .. args['duration unit']))

else

timeToEnd = timeToStart + (tonumber(args.duration) or error('args.duration should be a number of seconds', 0))

end

if timeToEnd > 0 then

-- Event is in progress

text = args.eventstart or formatMessage(timeToEnd, (args.event or 'the event') .. ' ends', args.color)

else

-- Event had a duration and has now ended

text = args.eventend or ((lang:ucfirst(args.event or 'The event')) .. ' has ended.')

end

else

-- Event had no duration and has begun

text = args.eventstart or ((lang:ucfirst(args.event or 'The event')) .. ' has started.')

end

local refreshLink

if args.refresh == 'no' then

refreshLink = ''

else

refreshLink = mw.title.getCurrentTitle():fullUrl({action = 'purge'})

refreshLink = string.format(' ([%s refresh])', refreshLink)

end

return text .. refreshLink

end

return p