local p = {}

-- _fetch looks at the "demo" argument.
local _fetch = require('Module:Transclusion_count').fetch
local yesno = require('Module:Yesno')

function p.num
	if count == nil then
		if yesno(frame.args['fetch']) == false then
			if (frame.args[1] or '') ~= '' then count = tonumber(frame.args[1]) end
		else
			count = _fetch(frame)
		end
	end
	
	-- Build output string
	local return_value = ""
	if count == nil then
		if frame.args[1] == "risk" or frame.args[1] == "위험" then
			return_value = "아주 많은"
		else
			return_value = "많은"
		end
	else
		-- Use 2 significant figures for smaller numbers and 3 for larger ones
		local sigfig = 2
		if count >= 100000 then
			sigfig = 3
		end
		
		-- Prepare to round to appropriate number of sigfigs
		local f = math.floor(math.log10(count)) - sigfig + 1
		
		-- Round and insert "approximately" or "+" when appropriate
		if (frame.args[2] == "yes") or (frame.args[2] == "예") or (mw.ustring.sub == "+") then
			-- Round down
			return_value = string.format("%s+", mw.getContentLanguage:formatNum(math.floor( (count / 10^(f)) ) * (10^(f))) )
		else
			-- Round to nearest
			return_value = string.format("대략&#x20;%s개", mw.getContentLanguage:formatNum(math.floor( (count / 10^(f)) + 0.5) * (10^(f))) )
		end

		-- Insert percentage of pages if that is likely to be >= 1% and when |no-percent= not set to yes
		if count and count > 250000 and not yesno (frame:getParent.args['no-percent']) then
			local percent = math.floor( ( (count/frame:callParserFunction ) * 100) + 0.5)
			if percent >= 1 then
				return_value = string.format
			end
		end	
	end
	
	return return_value
end
-- Actions if there is a large  transclusion count
function p.risk(frame)
	local return_value = ""
	if frame.args[1] == "위험" or frame.args[1] == "risk" then
		return_value = "위험"
	else
		local count = _fetch(frame)
		if count and count >= 100000 then return_value = "위험" end
	end
	return return_value
end

function p.text
	-- Only show the information about how this template gets updated if someone
	-- is actually editing the page and maybe trying to update the count.
	local bot_text = (frame:preprocess("") == "") and "\n\n----\n**미리 보기 메시지**: Transclusion count updated automatically (see documentation)." or ''
	
	if count == nil then
		if yesno(frame.args['fetch']) == false then
			if (frame.args[1] or '') ~= '' then count = tonumber(frame.args[1]) end
		else
			count = _fetch(frame)
		end
	end
	local title = mw.title.getCurrentTitle
	if title.subpageText == "설명문서" or title.subpageText == "연습장" then
		title = title.basePageTitle
	end
	
	local systemMessages = frame.args['system'] or frame.args['시스템']
	if ( frame.args['system'] == '' or frame.args['시스템'] == '' ) then
		systemMessages = nil
	end
	
	-- This retrieves the project URL automatically to simplify localiation.
	local templateCount = ('[https://linkcount.toolforge.org/index.php?project=%s&page=%s %s 문서]에서'):format(
		mw.title.getCurrentTitle:fullUrl:gsub('//(.-)/.*', '%1'),
		mw.uri.encode(title.fullText), p.num)
	local used_on_text = "**이 " .. (mw.title.getCurrentTitle.namespace == 828 and "루아 모듈" or "틀") .. '은 ';
	if systemMessages then
		used_on_text = used_on_text .. systemMessages ..
			((count and count > 2000) and  or ("**"))
	else
		used_on_text = used_on_text .. templateCount .. "**"
	end
	used_on_text = used_on_text .. ' 사용 중인 틀입니다'
	
	
	local sandbox_text = ("%s의 /연습장 또는 /시험장 하위 문서 또는 사용자의 %s. "):format(
		(mw.title.getCurrentTitle.namespace == 828 and "모듈" or "틀"),
		title.fullText, title.fullText,
		mw.title.getCurrentTitle.namespace == 828 and "모듈:연습장|모듈 연습장" or "위키백과:사용자 문서|사용자 하위 문서"
	)
	
	local infoArg = ( frame.args["info"] ~= "" or frame.args["정보"] ~= "" ) and frame.args["info"] or frame.args["정보"]
	if (systemMessages or frame.args[1] == "risk" or frame.args[1] == "위험" or (count and count >= 100000) ) then
		local info = systemMessages and '.변경 시 위키백과 사용자 인터페이스에 즉각 변화를 줄 수 있습니다.' or '.'
		if infoArg then
			info = info .. "" .. infoArg
		end
		sandbox_text = info .. ' To avoid major disruption' ..
			(count and count >= 100000 and ' and server load' or '') ..
			', any changes should be tested in the ' .. sandbox_text ..
			'The tested changes can be added to this page in a single edit. '
	else
		sandbox_text = (infoArg and ('.' .. infoArg .. ' C') or ' and c') ..
			'hanges may be widely noticed. Test changes in the ' .. sandbox_text
	end

	
	local discussion_text = systemMessages and 'Please discuss changes ' or 'Consider discussing changes '
	if frame.args["2"] and frame.args["2"] ~= "" and frame.args["2"] ~= "yes" then
		discussion_text = string.format
	else
		discussion_text = string.format
	end
	
	return used_on_text .. sandbox_text .. discussion_text .. " before implementing them." .. bot_text
end

function p.main(frame)
	local count = nil
	if yesno(frame.args['fetch']) == false then
		if (frame.args[1] or '') ~= '' then count = tonumber(frame.args[1]) end
	else
		count = _fetch(frame)
	end
	local image = "40px|alt=경고|link="
	local type_param = "style"
	local epilogue = ''
	if frame.args['system'] and frame.args['system'] ~= '' then
		image = "40px|alt=경고|link="
		type_param = "content"
		local nocat = frame:getParent.args['nocat'] or frame.args['nocat']
		local categorise = (nocat == '' or not yesno(nocat))
		if categorise then
			epilogue = frame:preprocess('|File=upload|#default=edit}}|}}|sysop|templateeditor|interfaceadmin=|#default=}}}}')
		end
	elseif ( (frame.args[1] == "risk" or frame.args[1] == "위험") or (count and count >= 100000)) then
		image = "40px|alt=경고|link="
		type_param = "content"
	end
	
	if frame.args["form"] == "editnotice" then
		return frame:expandTemplate{
				title = 'editnotice',
				args = {
						["image"] = image,
						["text"] = p.text,
						["expiry"] = (frame.args["expiry"] or "")
	else
		return require('Module:Message box').main('ombox', {
			type = type_param,
			image = image,
			text = p.text,
			expiry = (frame.args["expiry"] or "")
	end
end