local export = {}

local WikimediaLanguage = {}

function WikimediaLanguage:getCode()
	return self._code
end

function WikimediaLanguage:getCanonicalName()
	return self._rawData.canonicalName
end

--function WikimediaLanguage:getAllNames()
--	return self._rawData.names
--end

function WikimediaLanguage:getType()
	return "Wikimedia"
end

function WikimediaLanguage:getWiktionaryLanguage()
	if not self._wiktionaryLanguageObject then
		self._wiktionaryLanguageObject = require("Module:languages").getByCode(self._rawData.wiktionary_code)
	end
	
	return self._wiktionaryLanguageObject
end

-- Do NOT use this method!
-- All uses should be pre-approved on the talk page!
function WikimediaLanguage:getRawData()
	return self._rawData
end

WikimediaLanguage.__index = WikimediaLanguage


function export.getByCode(code)
	-- Only accept codes the software recognises
	if not mw.language.isKnownLanguageTag(code) then
		return nil
	end
	
	local rawData = mw.loadData("Module:wikimedia languages/data")[code]
	
	-- If there is no specific Wikimedia code, then "borrow" the information
	-- from the general Wiktionary language code
	if not rawData then
		local lang = require("Module:languages").getByCode(code)
		
		if not lang then
			return nil
		end
		
		rawData = {canonicalName = lang:getCanonicalName(), wiktionary_code = code}
	elseif not rawData.canonicalName then
		rawData = {canonicalName = require("Module:languages").getByCode(rawData.wiktionary_code):getCanonicalName(), wiktionary_code = rawData.wiktionary_code}
	end
	
	return setmetatable({ _rawData = rawData, _code = code }, WikimediaLanguage)
end

function export.getByCodeWithFallback(code)
	local object = export.getByCode(code)
	
	if object then
		return object
	end
	
	local lang = require("Module:languages").getByCode(code)
	
	if not lang then
		return nil
	end
	
	return lang:getWikimediaLanguages()[1]
end

return export