Module:Calendar

-- This module renders the calendar seen on Portal:Current events.

local p = {}

local function makeWikilink(link, display) if display then return string.format('%s', link, display) else return string.format('%s', link) end end

function p.main local dateStuff = p.getDateStuff local dayStrings = p.makeDayStrings(dateStuff) return p.export(dayStrings, dateStuff) end

function p.getDateStuff -- Gets date data. local dateStuff = {} local lang = mw.language.getContentLanguage --Year local year = lang:formatDate('Y') year = tonumber(year) dateStuff.year = year -- Month local month = lang:formatDate('F') dateStuff.month = month -- Month and year local monthAndYear = lang:formatDate('F Y') local firstOfMonth = lang:formatDate('01-m-Y') dateStuff.monthAndYear = monthAndYear -- Previous month and year dateStuff.previousMonthAndYear = lang:formatDate('F Y', firstOfMonth .. ' -1 month') -- Next month and year dateStuff.nextMonthAndYear = lang:formatDate('F Y', firstOfMonth .. ' +1 month') -- Day local day = lang:formatDate('j') day = tonumber(day) dateStuff.day = day -- Days in month local daysInMonth = lang:formatDate('j', firstOfMonth .. ' +1 month -1 day') daysInMonth = tonumber(daysInMonth) dateStuff.daysInMonth = daysInMonth -- Weekday of the first day of the month local firstWeekday = lang:formatDate('w', firstOfMonth) -- Sunday = 0, Saturday = 6 firstWeekday = tonumber(firstWeekday) firstWeekday = firstWeekday + 1 -- Make compatible with Lua tables. Sunday = 1, Saturday = 7. dateStuff.firstWeekday = firstWeekday return dateStuff end

function p.makeDayStrings(dateStuff) local calStrings = {} local currentDay = dateStuff.day local isLinkworthy = p.isLinkworthy local currentMonth = dateStuff.month local currentYear = dateStuff.year local makeDayLink = p.makeDayLink for day = 1, dateStuff.daysInMonth do		if isLinkworthy(day, currentDay) then calStrings[#calStrings + 1] = makeDayLink(day, currentMonth, currentYear) else calStrings[#calStrings + 1] = tostring(day) end end return calStrings end

function p.isLinkworthy(day, currentDay) -- Returns true if the calendar day should be linked, and false if not. -- Days should be linked if they are the current day or if they are within the six -- preceding days, as that is the number of items on the current events page. if currentDay - 6 <= day and day <= currentDay then return true else return false end end

function p.makeDayLink(day, month, year) return string.format(" %d  ", year, month, day, day) end

function p.export(dayStrings, dateStuff) -- Generates the calendar HTML. local monthAndYear = dateStuff.monthAndYear local root = mw.html.create('table') root :addClass('infobox') :css{ display = 'table', width = '100%', float = 'initial', ['max-width'] = '350px', margin = 'auto !important', ['text-align'] = 'center', ['background-color'] = '#f5faff', border = '1px solid #cedff2' }		-- Headings :tag('tr') :css('background-color', '#cedff2') :tag('th') :css{['text-align'] = 'center'} :wikitext(makeWikilink('Portal:Current events/' .. dateStuff.previousMonthAndYear, '◀')) :done :tag('th') :attr('colspan', '5') :css{['text-align'] = 'center'} :wikitext(makeWikilink('Portal:Current events/' .. monthAndYear, monthAndYear)) :done :tag('th') :css{['text-align'] = 'center'} :wikitext(makeWikilink('Portal:Current events/' .. dateStuff.nextMonthAndYear, '▶'))

-- Day of week headings local dayHeadingRow = root:tag('tr') local weekdays = {'S', 'M', 'T', 'W', 'T', 'F', 'S'} for i, weekday in ipairs(weekdays) do		dayHeadingRow:tag('th') :css{['width'] = '14%', ['text-align'] = 'center'} :wikitext(weekday) end -- Days local colspan = dateStuff.firstWeekday - 1 local cellCount = 0 -- Tracks the number of day cells. local firstDayRow = root:tag('tr') if colspan > 1 then firstDayRow:tag('td') :attr('colspan', tostring(colspan)) elseif colspan == 1 then firstDayRow:tag('td') end for i = colspan + 1, 7 do -- Finish the first row cellCount = cellCount + 1 firstDayRow:tag('td') :css{['text-align'] = 'center'} :wikitext(dayStrings[cellCount]) end while cellCount < #dayStrings do -- Second day row onwards local otherDayRow = root:tag('tr') for i = 1, 7 do			cellCount = cellCount + 1 local dayString = dayStrings[cellCount] if not dayString then dayString = " " end otherDayRow:tag('td') :css{['text-align'] = 'center'} :wikitext(dayString) end end

-- Footer root:tag('tr') :tag('td') :attr('colspan', '7') :css{['padding-top'] = '3px', ['padding-bottom'] = '5px', ['font-size'] = '78%', ['text-align'] = 'right'} :wikitext('  ' .. makeWikilink('Portal:Current events/' .. monthAndYear, 'More ' .. monthAndYear .. ' events... '))	return tostring(root) end

return p