require('strict')
local getArgs
local yesno = require('Module:Yesno')
local lang = mw.language.getContentLanguage  
local CONFIG_MODULE = 'Module:Message box/div/configuration'
local DEMOSPACES = {talk = 'tmbox', image = 'imbox', file = 'imbox', category = 'cmbox', article = 'ambox', main = 'ambox'}  
---
-- Helper functions
---  
local function getTitleObject(...)
-- Get the title object, passing the function through pcall
-- in case we are over the expensive function count limit.
local success, title = pcall(mw.title.new, ...)
if success then
return title
end
end  
local function union(t1, t2)
-- Returns the union of two arrays.
local vals = {}
for i, v in ipairs(t1) do
vals[v] = true
end
for i, v in ipairs(t2) do
vals[v] = true
end
local ret = {}
for k in pairs(vals) do
table.insert(ret, k)
end
table.sort(ret)
return ret
end  
local function getArgNums(args, prefix)
local nums = {}
for k, v in pairs(args) do
local num = mw.ustring.match(tostring(k), '^' .. prefix .. '([1-9]%d*)$')
if num then
table.insert(nums, tonumber(num))
end
end
table.sort(nums)
return nums
end  
---
-- Box class definition
---  
local MessageBox = {}
MessageBox.__index = MessageBox  
function MessageBox.new(boxType, args, cfg)
args = args or {}
local obj = {}  
-- Set the title object and the namespace.
obj.title = getTitleObject(args.page) or mw.title.getCurrentTitle  
-- Set the config for our box type.
obj.cfg = cfg[boxType]
if not obj.cfg then
local ns = obj.title.namespace
-- boxType is "mbox" or invalid input
if args.demospace and args.demospace ~= '' then
-- implement demospace parameter of mbox
local demospace = string.lower(args.demospace)
if DEMOSPACES[demospace] then
-- use template from DEMOSPACES
obj.cfg = cfg[DEMOSPACES[demospace]]
elseif string.find( demospace, 'talk' ) then
-- demo as a talk page
obj.cfg = cfg.tmbox
else
-- default to ombox
obj.cfg = cfg.ombox
end
elseif ns == 0 then
obj.cfg = cfg.ambox -- main namespace
elseif ns == 6 then
obj.cfg = cfg.imbox -- file namespace
elseif ns == 14 then
obj.cfg = cfg.cmbox -- category namespace
else
local nsTable = mw.site.namespaces[ns]
if nsTable and nsTable.isTalk then
obj.cfg = cfg.tmbox -- any talk namespace
else
obj.cfg = cfg.ombox -- other namespaces or invalid input
end
end
end  
-- Set the arguments, and remove all blank arguments except for the ones
-- listed in cfg.allowBlankParams.
do
local newArgs = {}
for k, v in pairs(args) do
if v ~= '' then
newArgs[k] = v
end
end
for i, param in ipairs(obj.cfg.allowBlankParams or {}) do
newArgs[param] = args[param]
end
obj.args = newArgs
end  
-- Define internal data structure.
obj.categories = {}
obj.classes = {}
-- For lazy loading of Module:Category handler.
obj.hasCategories = false  
return setmetatable(obj, MessageBox)
end  
function MessageBox:addCat(ns, cat, sort)
if not cat then
return nil
end
if sort then
cat = string.format('', cat, sort)
else
cat = string.format('', cat)
end
self.hasCategories = true
self.categories[ns] = self.categories[ns] or {}
table.insert(self.categories[ns], cat)
end  
function MessageBox:addClass(class)
if not class then
return nil
end
table.insert(self.classes, class)
end  
function MessageBox:setParameters
local args = self.args
local cfg = self.cfg  
-- Get type data.
self.type = args.type
local typeData = cfg.types[self.type]
self.invalidTypeError = cfg.showInvalidTypeError
and self.type
and not typeData
typeData = typeData or cfg.types[cfg.default]
self.typeClass = typeData.class
self.typeImage = typeData.image  
-- Find if the box has been wrongly substituted.
self.isSubstituted = cfg.substCheck and args.subst == 'SUBST'  
-- Find whether we are using a small message box.
self.isSmall = cfg.allowSmall and (
cfg.smallParam and args.small == cfg.smallParam
or not cfg.smallParam and yesno(args.small)  
-- Add attributes, classes and styles.
self.id = args.id
self.name = args.name
if self.name then
self:addClass('box-' .. string.gsub(self.name,' ','_'))
end
if yesno(args.plainlinks) ~= false then
self:addClass('plainlinks')
end
for _, class in ipairs(cfg.classes or {}) do
self:addClass(class)
end
if self.isSmall then
self:addClass(cfg.smallClass or 'mbox-small')
end
self:addClass(self.typeClass)
self:addClass(args.class)
self.style = args.style
self.attrs = args.attrs  
-- Set text style.
self.textstyle = args.textstyle  
-- Find if we are on the template page or not. This functionality is only
-- used if useCollapsibleTextFields is set, or if both cfg.templateCategory
-- and cfg.templateCategoryRequireName are set.
self.useCollapsibleTextFields = cfg.useCollapsibleTextFields
if self.useCollapsibleTextFields
or cfg.templateCategory
and cfg.templateCategoryRequireName
then
if self.name then
local templateName = mw.ustring.match(
self.name,
'^[tT][eE][mM][pP][lL][aA][tT][eE][%s_]*:[%s_]*(.*)$'
) or self.name
templateName = 'Template:' .. templateName
self.templateTitle = getTitleObject(templateName)
end
self.isTemplatePage = self.templateTitle
and mw.title.equals(self.title, self.templateTitle)
end  
-- Process data for collapsible text fields. At the moment these are only
-- used in .
if self.useCollapsibleTextFields then
-- Get the self.issue value.
if self.isSmall and args.smalltext then
self.issue = args.smalltext
else
local sect
if args.sect == '' then
sect = 'This ' .. (cfg.sectionDefault or 'page')
elseif type(args.sect) == 'string' then
sect = 'This ' .. args.sect
end
local issue = args.issue
issue = type(issue) == 'string' and issue ~= '' and issue or nil
local text = args.text
text = type(text) == 'string' and text or nil
local issues = {}
table.insert(issues, sect)
table.insert(issues, issue)
table.insert(issues, text)
self.issue = table.concat(issues, ' ')
end  
-- Get the self.talk value.
local talk = args.talk
-- Show talk links on the template page or template subpages if the talk
-- parameter is blank.
if talk == ''
and self.templateTitle
and (
mw.title.equals(self.templateTitle, self.title)
or self.title:isSubpageOf(self.templateTitle)
then
talk = '#'
elseif talk == '' then
talk = nil
end
if talk then
-- If the talk value is a talk page, make a link to that page. Else
-- assume that it's a section heading, and make a link to the talk
-- page of the current page with that section heading.
local talkTitle = getTitleObject(talk)
local talkArgIsTalkPage = true
if not talkTitle or not talkTitle.isTalkPage then
talkArgIsTalkPage = false
talkTitle = getTitleObject(
self.title.text,
mw.site.namespaces[self.title.namespace].talk.id
end
if talkTitle and talkTitle.exists then
local talkText
if self.isSmall then
local talkLink = talkArgIsTalkPage and talk or (talkTitle.prefixedText .. '#' .. talk)
talkText = string.format('(talk)', talkLink)
else
talkText = 'Relevant discussion may be found on'
if talkArgIsTalkPage then
talkText = string.format(
'%s %s.',
talkText,
talk,
talkTitle.prefixedText
else
talkText = string.format(
'%s the talk page.',
talkText,
talkTitle.prefixedText,
talk
end
end
self.talk = talkText
end
end  
-- Get other values.
self.fix = args.fix ~= '' and args.fix or nil
local date
if args.date and args.date ~= '' then
date = args.date
elseif args.date == '' and self.isTemplatePage then
date = lang:formatDate('F Y')
end
if date then
self.date = string.format(" <span><i>(<span>%s</span>)</i></span>", date)
end
self.info = args.info
if yesno(args.removalnotice) then
self.removalNotice = cfg.removalNotice
end
end  
-- Set the non-collapsible text field. At the moment this is used by all box
-- types other than ambox, and also by ambox when small=yes.
if self.isSmall then
self.text = args.smalltext or args.text
else
self.text = args.text
end  
-- Set the below row.
self.below = cfg.below and args.below  
-- General image settings.
self.imageCellDiv = not self.isSmall and cfg.imageCellDiv
self.imageEmptyCell = cfg.imageEmptyCell  
-- Left image settings.
local imageLeft = self.isSmall and args.smallimage or args.image
if cfg.imageCheckBlank and imageLeft ~= 'blank' and imageLeft ~= ''