See soorce fer Module:Uses TemplateStyles

-- This module implements the {{Uses TemplateStyles}} template.
local yesno = require('Module:Yesno')
local mList = require('Module:List')
local mTableTools = require('Module:TableTools')
local mMessageBox = require('Module:Message box')

local p = {}

function p.main(frame)
	local origArgs = frame:getParent().args
	local args = {}
	for k, v in pairs(origArgs) do
		v = v:match('^%s*(.-)%s*$')
		if v ~= '' then
			args[k] = v
		end
	end
	return p._main(args)
end

function p._main(args)
	local tStyles = mTableTools.compressSparseArray(args)
	local box = p.renderBox(tStyles)
	local trackingCategories = p.renderTrackingCategories(args, tStyles)
	return box .. trackingCategories
end

function p.renderBox(tStyles)
	local boxArgs = {}
	if #tStyles < 1 then
		boxArgs.text = '<strong class="error">Error: no TemplateStyles specified</strong>'
	else
		local tStylesLinks = {}
		for i, ts in ipairs(tStyles) do
			local sandboxLink = nil
			local tsTitle = mw.title.new(ts)
			if tsTitle then
				local tsSandboxTitle = mw.title.new(string.format('%s:%s/sandbox/%s', tsTitle.nsText, tsTitle.baseText, tsTitle.subpageText))
				if tsSandboxTitle and tsSandboxTitle.exists then
					sandboxLink = string.format(' ([[:%s|sandbox]])', tsSandboxTitle.prefixedText)
				end
			end
			tStylesLinks[i] = string.format('[[:%s]]%s', ts, sandboxLink or '')
		end
		local tStylesList = mList.makeList('bulleted', tStylesLinks)
		boxArgs.text = 'This ' .. 
			(mw.title.getCurrentTitle():inNamespaces(828,829) and 'module' or 'template') ..
			' uses [[Wikipedia:TemplateStyles|TemplateStyles]]:\n' .. tStylesList
	end
	boxArgs.type = 'notice'
	boxArgs.small = true
	boxArgs.image = '[[File:Farm-Fresh css add.svg|32px|alt=CSS]]'
	return mMessageBox.main('mbox', boxArgs)
end

function p.renderTrackingCategories(args, tStyles, titleObj)
	if yesno(args.nocat) then
		return ''
	end
	
	local cats = {}
	
	-- Error category
	if #tStyles < 1 then
		cats[#cats + 1] = 'Uses TemplateStyles templates with errors'
	end
	
	-- TemplateStyles category
	titleObj = titleObj or mw.title.getCurrentTitle()
	local subpageBlacklist = {
		doc = true,
		sandbox = true,
		sandbox2 = true,
		testcases = true
	}
	if (titleObj.namespace == 10 or titleObj.namespace == 828)
		and not subpageBlacklist[titleObj.subpageText]
	then
		local category = args.category
		if not category then
			category = category or 'Templates using TemplateStyles'
		end
		cats[#cats + 1] = category
		if not yesno(args.noprotcat) then
			local currentProt = titleObj.protectionLevels["edit"] and titleObj.protectionLevels["edit"][1] or nil
			local addedLevelCat = false
			local addedPadlockCat = false
			for i, ts in ipairs(tStyles) do
				local tsTitleObj = mw.title.new(ts)
				local tsProt = tsTitleObj.protectionLevels["edit"] and tsTitleObj.protectionLevels["edit"][1] or nil
				if tsProt ~= currentProt and not addedLevelCat then
					cats[#cats + 1] = "Templates using TemplateStyles with a different protection level"
				end
				if tsProt and not addedPadlockCat then
					local content = tsTitleObj:getContent()
					if not content:find("{{pp-") then
						cats[#cats + 1] = "Templates using TemplateStyles without padlocks"
						addedPadlockCat = true
					end
				end
			end
		end
	end
	for i, cat in ipairs(cats) do
		cats[i] = string.format('[[Category:%s]]', cat)
	end
	return table.concat(cats)
end

return p