Module:Countdown

-- This module powers Template:Countdown.

local p = {}

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

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 mw.ustring.match(timeLeft, '^%d+') == '1' then
       isOrAre = 'is'
   else
       isOrAre = 'are'
   end
   -- Color and bold the numbers, because it makes them look important.
   local timeLeft = mw.ustring.gsub(timeLeft, '(%d+)', '%1')
   -- Make the refresh link and join it all together.
   return mw.ustring.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  ''
   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)

   local refreshLink = mw.title.getCurrentTitle():fullUrl{action = 'purge'}
   refreshLink = mw.ustring.format(' ([%s refresh])', refreshLink)
   if timeToStart > 0 then
       -- Event has not begun yet
       return formatMessage(timeToStart, args.event or 'the event begins', args.color, refreshLink)
   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)
       end
       if timeToEnd > 0 then
           -- Event is in progress
           return args.eventstart .. refreshLink or formatMessage(timeToEnd, (args.event or 'the event') .. ' ends', args.color, refreshLink)
       else
           -- Event had a duration and has now ended
           return ((args.eventend or ((lang:ucfirst(args.event) or 'The event') .. ' has ended.')) .. refreshLink)
       end
   else
       -- Event had no duration and has begun
       return ((args.eventstart or ((lang:ucfirst(args.event) or 'The event') .. ' has started.')) .. refreshLink)
   end

end

return p