Documentation for this module may be created at Մոդուլ:headword/templates/doc

local export = {}

local invariable = {
	["cmavo"] = true,
	["cmene"] = true,
	["fu'ivla"] = true,
	["gismu"] = true,
	["Han tu"] = true,
	["hanzi"] = true,
	["hanja"] = true,
	["jyutping"] = true,
	["kanji"] = true,
	["lujvo"] = true,
	["phrasebook"] = true,
	["pinyin"] = true,
	["rafsi"] = true,
	["romaji"] = true,
}

function export.head_t(frame)
	local args = frame:getParent().args
	
	-- Get language and script information
	local lang = args[1] or (mw.title.getCurrentTitle().nsText == "Կաղապար" and "und") or error("Language code has not been specified. Please pass parameter 1 to the template.")
	local sc = args["sc"] or ""; if sc == "" then sc = nil end
	local cat_sc = args["cat sc"] or ""; if cat_sc == "" then cat_sc = nil end
	lang = require("Module:languages").getByCode(lang) or error("The language code \"" .. lang .. "\" is not valid.")
	
	if cat_sc then
		cat_sc = (cat_sc and (require("Module:scripts").getByCode(cat_sc) or error("The script code \"" .. cat_sc .. "\" is not valid.")) or nil)
		sc = cat_sc
	else
		sc = (sc and (require("Module:scripts").getByCode(sc) or error("The script code \"" .. sc .. "\" is not valid.")) or nil)
	end
	
	-- Gather basic parameters
	local sort_key = args["sort"]; if sort_key == "" then sort_key = nil end
	local pos = args[2]; if pos == "" then pos = nil end
	local cat2 = args["cat2"]; if cat2 == "" then cat2 = nil end
	local cat3 = args["cat3"]; if cat3 == "" then cat3 = nil end
	
	-- Gather headwords and transliterations
	local heads = {}
	local translits = {}
	local head = args["head"] or ""
	local translit = args["tr"]; if translit == "" then translit = nil end
	local i = 1
	
	while head do
		if head then
			table.insert(heads, head)
			translits[#heads] = translit
		end
		
		i = i + 1
		head = args["head" .. i]; if head == "" then head = nil end
		translit = args["tr" .. i]; if translit == "" then translit = nil end
	end
	
	-- Gather gender and number specifications
	-- Iterate over all gn parameters (g2, g3 and so on) until one is empty
	local genders = {}
	local g = args["g"]; if g == "" then g = nil end
	local i = 2
	
	while g do
		table.insert(genders, g)
		g = args["g" .. i]; if g == "" then g = nil end
		i = i + 1
	end
	
	-- Gather inflected forms
	local inflections = {}
	
	local i = 1
	local label = args[i * 2 + 1]
	local accel = args["f" .. i .. "accel"]; if accel == "" then accel = nil end
	local nolink = args["f" .. i .. "nolink"]; if nolink == "" then nolink = nil end
	local parts = {label = label, accel = accel, nolink = nolink}
	
	local m_scripts = nil
	
	while label do
		local term = args[i * 2 + 2]; if term == "" then term = nil end
		local alt = args["f" .. i .. "alt"]; if alt == "" then alt = nil end
		local sc = args["f" .. i .. "sc"]; if sc == "" then sc = nil end
		local id = args["f" .. i .. "id"]; if id == "" then id = nil end
		local gender = args["f" .. i .. "g"]; if gender == "" then gender = nil end
		local qualifier = args["f" .. i .. "qual"]; if qualifier == "" then qualifier = nil end
		
		if term or alt then
			if sc then
				m_scripts = m_scripts or require("Module:scripts")
				sc = (sc and (m_scripts.getByCode(sc) or error("The script code \"" .. sc .. "\" is not valid.")) or nil)
			end
			
			table.insert(parts, {term = term, alt = alt, sc = sc, id = id, genders = {gender}, qualifiers = {qualifier}})
		end
		
		i = i + 1
		label = args[i * 2 + 1]
		accel = args["f" .. i .. "accel"]; if accel == "" then accel = nil end
		nolink = args["f" .. i .. "nolink"]; if nolink == "" then nolink = nil end
		
		-- If the next label is not "or" then insert the previous one and create a new one.
		if label ~= "or" then
			-- Only insert if the previous label is not empty.
			if (parts.label or "") ~= "" then
				table.insert(inflections, parts)
			end
			
			parts = {label = label, accel = accel, nolink = nolink}
		end
	end
	
	-- Get/set categories
	local categories = {}
	local tracking_categories = {}
	
	if pos then
		if not pos:find("s$") and not invariable[pos] then
			--require("Module:debug").track("head tracking/singular category")
			
			-- Make the plural form of the part of speech
			if pos:find("x$") then
				pos = pos .. "es"
			else
				pos = pos .. "s"
			end
		end
		
		table.insert(categories, lang:getCanonicalName() .. " " .. pos .. (cat_sc and " in " .. cat_sc:getCategoryName() or ""))
	end
	
	if cat2 then
		table.insert(categories, lang:getCanonicalName() .. " " .. cat2)
	end
	
	if cat3 then
		table.insert(categories, lang:getCanonicalName() .. " " .. cat3)
	end
	
	return require("Module:headword").full_headword(lang, sc, heads, translits, genders, inflections, categories, sort_key) ..
		require("Module:utilities").format_categories(tracking_categories, lang, sort_key)
end

return export