Module:Infobox

Documentation for this module may be created at Module:Infobox/doc

-- Module:Infobox
-- Central Lua infobox builder: hides empty rows automatically and supports wrapper templates.

local p = {}

local function isNonEmpty(v)
	if v == nil then return false end
	if type(v) ~= "string" then return true end
	return mw.text.trim(v) ~= ""
end

local function renderImage(filename, size)
	if not isNonEmpty(filename) then return nil end
	size = size or "280px"
	return string.format("[[File:%s|%s|center]]", mw.text.trim(filename), size)
end

-- Builds the table with automatic row hiding
function p.build(frame)
	local args = {}
	for k, v in pairs(frame:getParent() and frame:getParent().args or {}) do
		args[k] = v
	end
	for k, v in pairs(frame.args or {}) do
		args[k] = v
	end

	local root = mw.html.create("table"):addClass("infobox")

	-- Title
	local title = args.title or args.name or mw.title.getCurrentTitle().text
	root:tag("tr")
		:tag("th")
			:attr("colspan", "2")
			:addClass("infobox-title")
			:wikitext(title)

	-- Optional image
	local image = renderImage(args.image, args.image_size)
	if image then
		root:tag("tr")
			:tag("td")
				:attr("colspan", "2")
				:addClass("infobox-image")
				:wikitext(image)
	end

	-- Optional caption
	if isNonEmpty(args.caption) then
		root:tag("tr")
			:tag("td")
				:attr("colspan", "2")
				:addClass("infobox-caption")
				:wikitext(args.caption)
	end

	-- Auto-detect label/data pairs dynamically
	for i = 1, 50 do
		local label = args["label" .. i]
		local data  = args["data"  .. i]
		if isNonEmpty(label) or isNonEmpty(data) then
			local tr = root:tag("tr")
			tr:tag("th"):addClass("infobox-label"):wikitext(label or "")
			tr:tag("td"):addClass("infobox-data") :wikitext(data or "")
		end
	end

	return tostring(root)
end

-- Helper: given a mapping table, automatically hides empty values
function p.smart(frame)
	local args = frame:getParent() and frame:getParent().args or {}
	local map  = frame.args -- wrapper-defined label-to-field mapping

	local newArgs = {}
	local i = 0

	for label, key in pairs(map) do
		local value = args[key]
		if isNonEmpty(value) then
			i = i + 1
			newArgs["label" .. i] = label
			newArgs["data"  .. i] = value
		end
	end

	newArgs.title       = args.title or args.name or mw.title.getCurrentTitle().text
	newArgs.image       = args.image
	newArgs.image_size  = args.image_size
	newArgs.caption     = args.caption

	local fakeFrame = { args = newArgs }
	return p.build(fakeFrame)
end

return p