模块:DYKCount/sandbox

local p = {}
local lib_var = {}
local lib_arg = {}
local yesno = require('Module:Yesno')
local mError = require('Module:Error').error
local fullurl = require('Module:Fullurl')._fullurl

local function plainlink (url, text)
	return mw.html.create():tag('span'):addClass('plainlinks'):wikitext('[' .. url .. ' ' .. text .. ']')
end

local function button (url, class, style, text)
	local button = require('Module:Clickable_button_2').luaMain
	local args = {
		url = url,
		class = class,
		style = style,
		[1] = text
	}
end

function count_DYKEntry(title, offset) 
	local pattern = "{{%s*DYKEntry%s*|.-timestamp%s*="
    offset = tonumber(offset or 0) or 0
    title = mw.title.new(title, '')
    if title then
    	local wikitext = title:getContent()
    	wikitext = mw.text.decode(wikitext)
    	local _,count = mw.ustring.gsub(wikitext, pattern, '')
    	local h_id = count + 1 + offset
		return h_id
    end
    return ''
end

function count_dyk_section(frame, title, offset) 
	local pattern = "\127'\"`UNIQ%-%-h%-(%d+)%-%-QINU`\"'\127" -- <h></h>或章節標題的strip marker是十進位 (截至2020年3月4日)
    offset = tonumber(offset or 0) or 0
    title = mw.title.new(title, '')
    if title then
    	local wikitext = title:getContent()
    	wikitext = mw.text.decode(wikitext)
    	wikitext = mw.ustring.gsub(wikitext, '[%<%[%{%}%]%>%|%a%d]', '*') --有人奇特簽名會出錯，因此轉義掉；另{}不轉義掉會模板循環。
    	wikitext = mw.ustring.gsub(wikitext, '%*+', '%%') --清理重複轉義字元以減少解析器負擔
    	--mw.log(wikitext)
    	local avoid_r = frame:newChild{ title = title.fullText, args = {} }
    	local checker = avoid_r:preprocess( "== ~ ==\n\n" .. wikitext ) --前方字串是基底，移除會導致運算出問題
    	local max_id, min_id = 0, -1
    	--請勿改成計算評選數，因為不能排除評選中間出現子章節
    	mw.ustring.gsub(checker, pattern, function(h_id)
    		local h_idx = tonumber(h_id) -- <h></h>或章節標題的strip marker是十進位 (截至2020年3月4日，如未來有更動請修改或新增第二參數)
    		if h_idx then
    			if h_idx > max_id then max_id = h_idx end
    			if min_id < 0 or h_idx < max_id then min_id = h_idx end
    		end
    	end)
    	if (max_id + offset - min_id - 1) < 0 then
    		return max_id
    	end
		return max_id + offset - min_id - 1
    end
    return ''
end

local function button(frame, args)
	local text = args[1] or args['1'] or ''
	local section = args[2] or args['2'] or 0
	if text == '' then
		text = '提交新评选提名'
	end
	local getlink = yesno(args['link'] or 0)
	local onlyurl = yesno(args['only'] or 0)
	local style = args['style']
	local buttonclass = "mw-ui-button mw-ui-progressive mw-ui-big"
	local url_arg = {
		title = 'Wikipedia:新条目推荐/候选',
		action = 'edit',
		section = count_dyk_section(frame, 'Wikipedia:新条目推荐/候选', section),
		summary = '提交新的新条目推荐评选提名',
		onlyurl = 1
	}
	local url = fullurl(url_arg)
	local button = button(url, buttonclass, style, text)
	local wt
	if getlink then
		return plainlink( url , text  )
	end
	if onlyurl then
		wt = 'https:' .. url
		return wt
	end
	wt = mw.text.tag('div',{ style = "text-align: center;"}, tostring(button))
	return wt
end

function p.button (frame)
	if lib_var._arg_process == nil then lib_var = require('Module:Var') end
	local args, working_frame = lib_var._arg_process(frame)
	return button(frame, args)
end

return p