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

local export = {}

function export.exists(frame)
	local args = frame.args
	local fam = args[1] or error("Family code has not been specified. Please pass parameter 1 to the module invocation.")
	
	fam = require("Module:families").getByCode(fam)
	
	if fam then
		return "1"
	else
		return ""
	end
end

function export.getByCode(frame)
	local args = frame.args
	local fam = args[1] or error("Family code (parameter 1) has not been specified.")
	local itemname = args[2] or error("Function to call (parameter 2) has not been specified.")
	
	fam = require("Module:families").getByCode(fam) or error("The family code '" .. fam .. "' is not valid.")
	
	-- The item that the caller wanted to look up
	if itemname == "getCanonicalName" then
		return fam:getCanonicalName()
	elseif itemname == "getAllNames" then
		local index = args[3]; if index == "" then index = nil end
		index = tonumber(index or error("Numeric index of the desired item in the list (parameter 3) has not been specified."))
		return fam:getAllNames()[index] or ""
	elseif itemname == "getFamily" then
		return fam:getFamily():getCode()
	elseif itemname == "getCategoryName" then
		return fam:getCategoryName()
	else
		error("Requested invalid item name \"" .. itemname .. "\".")
	end
end

function export.getByCanonicalName(frame)
	local args = frame.args
	local famname = args[1] or error("Family name has not been specified. Please pass parameter 1 to the module invocation.")
	
	local fam = require("Module:families").getByCanonicalName(famname)
	
	if fam then
		return fam:getCode()
	else
		return ""
	end
end

return export