Module:Protection banner

-- This module implements and its daughter templates such as --,  and.

-- Initialise necessary modules. require('Module:No globals') local makeFileLink = require('Module:File link')._main local effectiveProtectionLevel = require('Module:Effective protection level')._main local effectiveProtectionExpiry = require('Module:Effective protection expiry')._main local yesno = require('Module:Yesno')

-- Lazily initialise modules and objects we don't always need. local getArgs, makeMessageBox, lang

-- Set constants. local CONFIG_MODULE = 'Module:Protection banner/config'

-- Helper functions

local function makeCategoryLink(cat, sort) if cat then return string.format(			'%s',			mw.site.namespaces[14].name,			cat,			sort		) end end

-- Validation function for the expiry and the protection date local function validateDate(dateString, dateType) if not lang then lang = mw.language.getContentLanguage end local success, result = pcall(lang.formatDate, lang, 'U', dateString) if success then result = tonumber(result) if result then return result end end error(string.format( 'invalid %s: %s', dateType, tostring(dateString) ), 4) end

local function makeFullUrl(page, query, display) return string.format(		'[%s %s]',		tostring(mw.uri.fullUrl(page, query)),		display	) end

-- Given a directed graph formatted as node -> table of direct successors, -- get a table of all nodes reachable from a given node (though always -- including the given node). local function getReachableNodes(graph, start) local toWalk, retval = {[start] = true}, {} while true do		-- Can't use pairs since we're adding and removing things as we're iterating local k = next(toWalk) -- This always gets the "first" key if k == nil then return retval end toWalk[k] = nil retval[k] = true for _,v in ipairs(graph[k]) do			if not retval[v] then toWalk[v] = true end end end end

-- Protection class

local Protection = {} Protection.__index = Protection

Protection.supportedActions = { edit = true, move = true, upload = true }

Protection.bannerConfigFields = { 'text', 'explanation', 'tooltip', 'alt', 'link', 'image' }

function Protection.new(args, cfg, title) local obj = {} obj._cfg = cfg obj.title = title or mw.title.getCurrentTitle

-- Set action if not args.action then obj.action = 'edit' elseif Protection.supportedActions[args.action] then obj.action = args.action else error(string.format( 'invalid action: %s', tostring(args.action) ), 3)	end

-- Set level obj.level = args.demolevel or effectiveProtectionLevel(obj.action, obj.title) if not obj.level or (obj.action == 'move' and obj.level == 'autoconfirmed') then -- Users need to be autoconfirmed to move pages anyway, so treat -- semi-move-protected pages as unprotected. obj.level = '*' end

-- Set expiry local effectiveExpiry = effectiveProtectionExpiry(obj.action, obj.title) if effectiveExpiry == 'infinity' then obj.expiry = 'indef' elseif effectiveExpiry ~= 'unknown' then obj.expiry = validateDate(effectiveExpiry, 'expiry date') end

-- Set reason if args[1] then obj.reason = mw.ustring.lower(args[1]) if obj.reason:find('|') then error('reasons cannot contain the pipe character ("|")', 3) end end

-- Set protection date if args.date then obj.protectionDate = validateDate(args.date, 'protection date') end -- Set banner config do obj.bannerConfig = {} local configTables = {} if cfg.banners[obj.action] then configTables[#configTables + 1] = cfg.banners[obj.action][obj.reason] end if cfg.defaultBanners[obj.action] then configTables[#configTables + 1] = cfg.defaultBanners[obj.action][obj.level] configTables[#configTables + 1] = cfg.defaultBanners[obj.action].default end configTables[#configTables + 1] = cfg.masterBanner for i, field in ipairs(Protection.bannerConfigFields) do			for j, t in ipairs(configTables) do				if t[field] then obj.bannerConfig[field] = t[field] break end end end end return setmetatable(obj, Protection) end

function Protection:isProtected return self.level ~= '*' end

function Protection:isTemporary return type(self.expiry) == 'number' end

function Protection:makeProtectionCategory local cfg = self._cfg local title = self.title -- Exit if the page is not protected. if not self:isProtected then return '' end -- Get the expiry key fragment. local expiryFragment if self.expiry == 'indef' then expiryFragment = self.expiry elseif type(self.expiry) == 'number' then expiryFragment = 'temp' end

-- Get the namespace key fragment. local namespaceFragment = cfg.categoryNamespaceKeys[title.namespace] if not namespaceFragment and title.namespace % 2 == 1 then namespaceFragment = 'talk' end -- Define the order that key fragments are tested in. This is done with an	-- array of tables containing the value to be tested, along with its -- position in the cfg.protectionCategories table. local order = { {val = expiryFragment,   keypos = 1}, {val = namespaceFragment, keypos = 2}, {val = self.reason,      keypos = 3}, {val = self.level,       keypos = 4}, {val = self.action,      keypos = 5} }

--	-- The old protection templates used an ad-hoc protection category system,	-- with some templates prioritising namespaces in their categories, and	-- others prioritising the protection reason. To emulate this in this module	-- we use the config table cfg.reasonsWithNamespacePriority to set the	-- reasons for which namespaces have priority over protection reason.	-- If we are dealing with one of those reasons, move the namespace table to	-- the end of the order table, i.e. give it highest priority. If not, the	-- reason should have highest priority, so move that to the end of the table	-- instead.	-- table.insert(order, table.remove(order, self.reason and cfg.reasonsWithNamespacePriority[self.reason] and 2 or 3)) --	-- Define the attempt order. Inactive subtables (subtables with nil "value"	-- fields) are moved to the end, where they will later be given the key	-- "all". This is to cut down on the number of table lookups in	-- cfg.protectionCategories, which grows exponentially with the number of	-- non-nil keys. We keep track of the number of active subtables with the	-- noActive parameter.	-- local noActive, attemptOrder do local active, inactive = {}, {} for i, t in ipairs(order) do			if t.val then active[#active + 1] = t			else inactive[#inactive + 1] = t			end end noActive = #active attemptOrder = active for i, t in ipairs(inactive) do			attemptOrder[#attemptOrder + 1] = t		end end --	-- Check increasingly generic key combinations until we find a match. If a	-- specific category exists for the combination of key fragments we are	-- given, that match will be found first. If not, we keep trying different	-- key fragment combinations until we match using the key	-- "all-all-all-all-all".	--	-- To generate the keys, we index the key subtables using a binary matrix	-- with indexes i and j. j is only calculated up to the number of active	-- subtables. For example, if there were three active subtables, the matrix	-- would look like this, with 0 corresponding to the key fragment "all", and	-- 1 corresponding to other key fragments.	-- 	--  j 1  2  3	-- i  	-- 1   1  1  1	-- 2   0  1  1	-- 3   1  0  1	-- 4   0  0  1	-- 5   1  1  0	-- 6   0  1  0	-- 7   1  0  0	-- 8   0  0  0	-- 	-- Values of j higher than the number of active subtables are set	-- to the string "all".	--	-- A key for cfg.protectionCategories is constructed for each value of i.	-- The position of the value in the key is determined by the keypos field in	-- each subtable.	-- local cats = cfg.protectionCategories for i = 1, 2^noActive do		local key = {} for j, t in ipairs(attemptOrder) do			if j > noActive then key[t.keypos] = 'all' else local quotient = i / 2 ^ (j - 1) quotient = math.ceil(quotient) if quotient % 2 == 1 then key[t.keypos] = t.val else key[t.keypos] = 'all' end end end key = table.concat(key, '|') local attempt = cats[key] if attempt then return makeCategoryLink(attempt, title.text) end end return '' end

function Protection:isIncorrect local expiry = self.expiry return not self:isProtected or type(expiry) == 'number' and expiry < os.time end

function Protection:isTemplateProtectedNonTemplate local action, namespace = self.action, self.title.namespace return self.level == 'templateeditor' and (			(action ~= 'edit' and action ~= 'move')			or (namespace ~= 10 and namespace ~= 828)		) end

function Protection:makeCategoryLinks local msg = self._cfg.msg local ret = { self:makeProtectionCategory } if self:isIncorrect then ret[#ret + 1] = makeCategoryLink(			msg['tracking-category-incorrect'],			self.title.text		) end if self:isTemplateProtectedNonTemplate then ret[#ret + 1] = makeCategoryLink(			msg['tracking-category-template'],			self.title.text		) end return table.concat(ret) end

-- Blurb class

local Blurb = {} Blurb.__index = Blurb

Blurb.bannerTextFields = { text = true, explanation = true, tooltip = true, alt = true, link = true }

function Blurb.new(protectionObj, args, cfg) return setmetatable({		_cfg = cfg,		_protectionObj = protectionObj,		_args = args	}, Blurb) end

-- Private methods --

function Blurb:_formatDate(num) -- Formats a Unix timestamp into dd Month, YYYY format. lang = lang or mw.language.getContentLanguage local success, date = pcall(		lang.formatDate,		lang,		self._cfg.msg['expiry-date-format'] or 'j F Y',		'@' .. tostring(num)	) if success then return date end end

function Blurb:_getExpandedMessage(msgKey) return self:_substituteParameters(self._cfg.msg[msgKey]) end

function Blurb:_substituteParameters(msg) if not self._params then local parameterFuncs = {}

parameterFuncs.CURRENTVERSION    = self._makeCurrentVersionParameter parameterFuncs.EDITREQUEST       = self._makeEditRequestParameter parameterFuncs.EXPIRY            = self._makeExpiryParameter parameterFuncs.EXPLANATIONBLURB  = self._makeExplanationBlurbParameter parameterFuncs.IMAGELINK         = self._makeImageLinkParameter parameterFuncs.INTROBLURB        = self._makeIntroBlurbParameter parameterFuncs.INTROFRAGMENT     = self._makeIntroFragmentParameter parameterFuncs.PAGETYPE          = self._makePagetypeParameter parameterFuncs.PROTECTIONBLURB   = self._makeProtectionBlurbParameter parameterFuncs.PROTECTIONDATE    = self._makeProtectionDateParameter parameterFuncs.PROTECTIONLEVEL   = self._makeProtectionLevelParameter parameterFuncs.PROTECTIONLOG     = self._makeProtectionLogParameter parameterFuncs.TALKPAGE          = self._makeTalkPageParameter parameterFuncs.TOOLTIPBLURB      = self._makeTooltipBlurbParameter parameterFuncs.TOOLTIPFRAGMENT   = self._makeTooltipFragmentParameter parameterFuncs.VANDAL            = self._makeVandalTemplateParameter self._params = setmetatable({}, {			__index = function (t, k)				local param				if parameterFuncs[k] then					param = parameterFuncs[k](self)				end				param = param or ''				t[k] = param				return param			end		}) end msg = msg:gsub('${(%u+)}', self._params) return msg end

function Blurb:_makeCurrentVersionParameter -- A link to the page history or the move log, depending on the kind of -- protection. local pagename = self._protectionObj.title.prefixedText if self._protectionObj.action == 'move' then -- We need the move log link. return makeFullUrl(			'Special:Log',			{type = 'move', page = pagename},			self:_getExpandedMessage('current-version-move-display')		) else -- We need the history link. return makeFullUrl(			pagename,			{action = 'history'},			self:_getExpandedMessage('current-version-edit-display')		) end end

function Blurb:_makeExpiryParameter local expiry = self._protectionObj.expiry if type(expiry) == 'number' then return self:_formatDate(expiry) else return expiry end end

function Blurb:_makeExplanationBlurbParameter -- Cover special cases first. if self._protectionObj.title.namespace == 8 then -- MediaWiki namespace return self:_getExpandedMessage('explanation-blurb-nounprotect') end

-- Get explanation blurb table keys local action = self._protectionObj.action local level = self._protectionObj.level local talkKey = self._protectionObj.title.isTalkPage and 'talk' or 'subject'

-- Find the message in the explanation blurb table and substitute any -- parameters. local explanations = self._cfg.explanationBlurbs local msg if explanations[action][level] and explanations[action][level][talkKey] then msg = explanations[action][level][talkKey] elseif explanations[action][level] and explanations[action][level].default then msg = explanations[action][level].default elseif explanations[action].default and explanations[action].default[talkKey] then msg = explanations[action].default[talkKey] elseif explanations[action].default and explanations[action].default.default then msg = explanations[action].default.default else error(string.format( 'could not find explanation blurb for action "%s", level "%s" and talk key "%s"', action, level, talkKey ), 8)	end return self:_substituteParameters(msg) end

function Blurb:_makeImageLinkParameter local imageLinks = self._cfg.imageLinks local action = self._protectionObj.action local level = self._protectionObj.level local msg if imageLinks[action][level] then msg = imageLinks[action][level] elseif imageLinks[action].default then msg = imageLinks[action].default else msg = imageLinks.edit.default end return self:_substituteParameters(msg) end

function Blurb:_makeIntroBlurbParameter if self._protectionObj:isTemporary then return self:_getExpandedMessage('intro-blurb-expiry') else return self:_getExpandedMessage('intro-blurb-noexpiry') end end

function Blurb:_makeIntroFragmentParameter if self._protectionObj:isTemporary then return self:_getExpandedMessage('intro-fragment-expiry') else return self:_getExpandedMessage('intro-fragment-noexpiry') end end

function Blurb:_makePagetypeParameter local pagetypes = self._cfg.pagetypes return pagetypes[self._protectionObj.title.namespace] or pagetypes.default or error('no default pagetype defined', 8) end

function Blurb:_makeProtectionBlurbParameter local protectionBlurbs = self._cfg.protectionBlurbs local action = self._protectionObj.action local level = self._protectionObj.level local msg if protectionBlurbs[action][level] then msg = protectionBlurbs[action][level] elseif protectionBlurbs[action].default then msg = protectionBlurbs[action].default elseif protectionBlurbs.edit.default then msg = protectionBlurbs.edit.default else error('no protection blurb defined for protectionBlurbs.edit.default', 8) end return self:_substituteParameters(msg) end

function Blurb:_makeProtectionDateParameter local protectionDate = self._protectionObj.protectionDate if type(protectionDate) == 'number' then return self:_formatDate(protectionDate) else return protectionDate end end

function Blurb:_makeProtectionLevelParameter local protectionLevels = self._cfg.protectionLevels local action = self._protectionObj.action local level = self._protectionObj.level local msg if protectionLevels[action][level] then msg = protectionLevels[action][level] elseif protectionLevels[action].default then msg = protectionLevels[action].default elseif protectionLevels.edit.default then msg = protectionLevels.edit.default else error('no protection level defined for protectionLevels.edit.default', 8) end return self:_substituteParameters(msg) end

function Blurb:_makeProtectionLogParameter local pagename = self._protectionObj.title.prefixedText -- We need the protection log. return makeFullUrl(		'Special:Log',		{type = 'protect', page = pagename},		self:_getExpandedMessage('protection-log-display')	) end

function Blurb:_makeTalkPageParameter return string.format(		'%s',		mw.site.namespaces[self._protectionObj.title.namespace].talk.name,		self._protectionObj.title.text,		self._args.section or 'top',		self:_getExpandedMessage('talk-page-link-display')	) end

function Blurb:_makeTooltipBlurbParameter if self._protectionObj:isTemporary then return self:_getExpandedMessage('tooltip-blurb-expiry') else return self:_getExpandedMessage('tooltip-blurb-noexpiry') end end

function Blurb:_makeTooltipFragmentParameter if self._protectionObj:isTemporary then return self:_getExpandedMessage('tooltip-fragment-expiry') else return self:_getExpandedMessage('tooltip-fragment-noexpiry') end end

function Blurb:_makeVandalTemplateParameter return require('Module:Vandal-m')._main{ self._args.user or self._protectionObj.title.baseText } end

-- Public methods --

function Blurb:makeBannerText(key) -- Validate input. if not key or not Blurb.bannerTextFields[key] then error(string.format( '"%s" is not a valid banner config field', tostring(key) ), 2)	end

-- Generate the text. local msg = self._protectionObj.bannerConfig[key] if type(msg) == 'string' then return self:_substituteParameters(msg) elseif type(msg) == 'function' then msg = msg(self._protectionObj, self._args) if type(msg) ~= 'string' then error(string.format( 'bad output from banner config function with key "%s"' .. ' (expected string, got %s)', tostring(key), type(msg) ), 4)		end return self:_substituteParameters(msg) end end

-- BannerTemplate class

local BannerTemplate = {} BannerTemplate.__index = BannerTemplate

function BannerTemplate.new(protectionObj, cfg) local obj = {} obj._cfg = cfg

-- Set the image filename. local imageFilename = protectionObj.bannerConfig.image if imageFilename then obj._imageFilename = imageFilename else -- If an image filename isn't specified explicitly in the banner config, -- generate it from the protection status and the namespace. local action = protectionObj.action local level = protectionObj.level local namespace = protectionObj.title.namespace local reason = protectionObj.reason -- Deal with special cases first. if (			namespace == 10			or namespace == 828			or reason and obj._cfg.indefImageReasons[reason]			) and action == 'edit' and level == 'sysop' and not protectionObj:isTemporary then -- Fully protected modules and templates get the special red "indef" -- padlock. obj._imageFilename = obj._cfg.msg['image-filename-indef'] else -- Deal with regular protection types. local images = obj._cfg.images if images[action] then if images[action][level] then obj._imageFilename = images[action][level] elseif images[action].default then obj._imageFilename = images[action].default end end end end return setmetatable(obj, BannerTemplate) end

function BannerTemplate:renderImage local filename = self._imageFilename or self._cfg.msg['image-filename-default'] or 'Transparent.gif' return makeFileLink{ file = filename, size = (self.imageWidth or 20) .. 'px', alt = self._imageAlt, link = self._imageLink, caption = self.imageCaption } end

-- Banner class

local Banner = setmetatable({}, BannerTemplate) Banner.__index = Banner

function Banner.new(protectionObj, blurbObj, cfg) local obj = BannerTemplate.new(protectionObj, cfg) -- This doesn't need the blurb. obj.imageWidth = 40 obj.imageCaption = blurbObj:makeBannerText('alt') -- Large banners use the alt text for the tooltip. obj._reasonText = blurbObj:makeBannerText('text') obj._explanationText = blurbObj:makeBannerText('explanation') obj._page = protectionObj.title.prefixedText -- Only makes a difference in testing. return setmetatable(obj, Banner) end

function Banner:__tostring -- Renders the banner. makeMessageBox = makeMessageBox or require('Module:Message box').main local reasonText = self._reasonText or error('no reason text set', 2) local explanationText = self._explanationText local mbargs = { page = self._page, type = 'protection', image = self:renderImage, text = string.format(			"%s%s",			reasonText,			explanationText and ' ' .. explanationText or ''		) }	return makeMessageBox('mbox', mbargs) end

-- Padlock class

local Padlock = setmetatable({}, BannerTemplate) Padlock.__index = Padlock

function Padlock.new(protectionObj, blurbObj, cfg) local obj = BannerTemplate.new(protectionObj, cfg) -- This doesn't need the blurb. obj.imageWidth = 20 obj.imageCaption = blurbObj:makeBannerText('tooltip') obj._imageAlt = blurbObj:makeBannerText('alt') obj._imageLink = blurbObj:makeBannerText('link') obj._indicatorName = cfg.padlockIndicatorNames[protectionObj.action] or cfg.padlockIndicatorNames.default or 'pp-default' return setmetatable(obj, Padlock) end

function Padlock:__tostring local frame = mw.getCurrentFrame -- The nowiki tag helps prevent whitespace at the top of articles. return frame:extensionTag{name = 'nowiki'} .. frame:extensionTag{ name = 'indicator', args = {name = self._indicatorName}, content = self:renderImage } end

-- Exports

local p = {}

function p._exportClasses -- This is used for testing purposes. return { Protection = Protection, Blurb = Blurb, BannerTemplate = BannerTemplate, Banner = Banner, Padlock = Padlock, } end

function p._main(args, cfg, title) args = args or {} cfg = cfg or require(CONFIG_MODULE)

local protectionObj = Protection.new(args, cfg, title)

local ret = {}

-- If a page's edit protection is equally or more restrictive than its -- protection from some other action, then don't bother displaying anything -- for the other action (except categories). if protectionObj.action == 'edit' or		args.demolevel or		not getReachableNodes(			cfg.hierarchy,			protectionObj.level		)[effectiveProtectionLevel('edit', protectionObj.title)] then -- Initialise the blurb object local blurbObj = Blurb.new(protectionObj, args, cfg) -- Render the banner if protectionObj:isProtected then ret[#ret + 1] = tostring(				(yesno(args.small) and Padlock or Banner)				.new(protectionObj, blurbObj, cfg)			) end end

-- Render the categories if yesno(args.category) ~= false then ret[#ret + 1] = protectionObj:makeCategoryLinks end return table.concat(ret) end

function p.main(frame, cfg) cfg = cfg or require(CONFIG_MODULE)

-- Find default args, if any. local parent = frame.getParent and frame:getParent local defaultArgs = parent and cfg.wrappers[parent:getTitle:gsub('/sandbox$', '')]

-- Find user args, and use the parent frame if we are being called from a	-- wrapper template. getArgs = getArgs or require('Module:Arguments').getArgs local userArgs = getArgs(frame, {		parentOnly = defaultArgs,		frameOnly = not defaultArgs	})

-- Build the args table. User-specified args overwrite default args. local args = {} for k, v in pairs(defaultArgs or {}) do		args[k] = v	end for k, v in pairs(userArgs) do		args[k] = v	end return p._main(args, cfg) end

return p