Module:Infobox

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

local p = {}

-- Utility: trim whitespace
local function trim(s)
	if not s then return nil end
	s = mw.text.trim(s)
	if s == "" then return nil end
	return s
end

-- Utility: escape HTML
local function esc(s)
	return mw.text.nowiki(s)
end

-- Render journal section
local function renderJournal(args)
	-- collect journal_* params
	local journals = {}

	for k, v in pairs(args) do
		if type(k) == "string" and k:match("^journal_") then
			local val = trim(v)
			if val then
				table.insert(journals, {
					key = k,
					label = k:gsub("^journal_", ""):gsub("_", " "),
					text = val
				})
			end
		end
	end

	-- legacy single journal
	if #journals == 0 and trim(args.journal) then
		return args.journal
	end

	if #journals == 0 then
		return nil
	end

	-- single journal: no <details>
	if #journals == 1 then
		return journals[1].text
	end

	-- multiple journals: details blocks
	local out = {}
	table.insert(out, '<div class="vp-journal-multi">')

	for i, j in ipairs(journals) do
		local open = (i == 1) and " open" or ""
		table.insert(out,
			string.format(
				'<details class="vp-journal-block"%s><summary>%s</summary><div class="vp-journal-text">%s</div></details>',
				open,
				mw.language.getContentLanguage():ucfirst(j.label),
				j.text
			)
		)
	end

	table.insert(out, '</div>')
	return table.concat(out)
end

-- Main renderer
function p.render(frame)
	local args = frame:getParent().args

	local name = trim(args.name) or mw.title.getCurrentTitle().text
	local image = trim(args.image)

	-- rows: everything except reserved params
	local reserved = {
		name = true,
		image = true,
		journal = true
	}
	for k, _ in pairs(args) do
		if k:match("^journal_") then
			reserved[k] = true
		end
	end

	local rows = {}

	for k, v in pairs(args) do
		if not reserved[k] then
			local val = trim(v)
			if val then
				table.insert(rows, {
					label = mw.language.getContentLanguage():ucfirst(k:gsub("_", " ")),
					value = val
				})
			end
		end
	end

	-- Begin table
	local html = {}
	table.insert(html, '<table class="infobox infobox-generic">')

	-- Header
	table.insert(html,
		string.format(
			'<tr><th colspan="2" class="infobox-header">%s</th></tr>',
			esc(name)
		)
	)

	-- Image
	if image then
		table.insert(html,
			string.format(
				'<tr><td colspan="2" class="infobox-image">[[File:%s|250px|center|%s]]</td></tr>',
				image,
				esc(name)
			)
		)
	end

	-- Journal
	local journalHTML = renderJournal(args)
	if journalHTML then
		table.insert(html,
			'<tr><td colspan="2" class="infobox-section infobox-journal-cell">' ..
			journalHTML ..
			'</td></tr>'
		)
	end

	-- Rows
	for _, row in ipairs(rows) do
		table.insert(html,
			string.format(
				'<tr>' ..
				'<td class="infobox-section infobox-label-cell"><span class="infobox-label">%s</span></td>' ..
				'<td class="infobox-section infobox-value-cell">%s</td>' ..
				'</tr>',
				esc(row.label),
				row.value
			)
		)
	end

	table.insert(html, '</table>')

	return table.concat(html, "\n")
end

return p