编辑“Module:Topic list”

local p = {}

local getArgs = require('Module:Arguments').getArgs

function conv(talk)
	-- 关键词替换
	-- 如有字符导致生成错误，请在这里添加转换
	talk = talk
		:gsub('===(.-)===', '%1')
		:gsub('Special:用户贡献/(%d+%.%d+%.%d+%.%d+)', 'User:ip:%1') -- handle ip user first
		:gsub('Special:Contributions/(%d+%.%d+%.%d+%.%d+)', 'User:ip:%1')
		:gsub('Special:Contribs/(%d+%.%d+%.%d+%.%d+)', 'User:ip:%1')
		:gsub('[[用户', 'User')
		:gsub('[[user', 'User')
	return talk
end

function titleConv(talk)
	-- 论题转换
	talk = talk
		:gsub('<.->', '')
		:gsub('%[%[', '')
		:gsub('|.-%]%]', '')
		:gsub('%]%]', '')
		:gsub('^%s', '')
		:gsub('%s$', '')
	return talk
end

function table.unique(t, bArray)
	local check = {}
	local n = {}
	local idx = 1
	for k, v in pairs(t) do
		if not check[v] then
			if bArray then
				n[idx] = v
				idx = idx + 1
			else
				n[k] = v
			end
			check[v] = true
		end
	end
	return n
end

function getTimeStyle(time)
	if time == '未知日期' then
		return 'background-color: #fee;'
	end
	local _, _, year, month, day, hour, min = time:find '(%d+)年(%d+)月(%d+)日%s%(.-%)%s(%d+):(%d+)'

	-- divided by 86400 is to convert seconds to days
	local diff = os.difftime(os.time(), os.time {year = year, month = month, day = day, hour = hour, min = min}) / 86400

	if diff >= 30 then
		return 'background-color: #bbb;'
	end
	if diff >= 7 then
		return 'background-color: #ddd;'
	end
	if diff >= 1 then
		return ''
	end
	return 'background-color: #efe;'
end

function close(text)
	if text:match 'closed%-topic%-yes' then
		return 'background-color: #efe;'
	end
	if text:match 'closed%-topic%-no' then
		return 'background-color: #fee;'
	end
	return ""
end

function trim(text)
	-- remove special strip markers and spaces
	text = mw.text.killMarkers(text):gsub('^[\t\r\n\f]*(.-)[\t\r\n\f]*$', '%1')
	return text
end

function makeUserLink(text)
	if text == '?' then
		return text
	end
	-- 输入用户名以及带有ip:前缀的ip用户。
	local ipUser = text:match 'ip:(.*)'
	if ipUser then
		return '[[Special:用户贡献/' .. ipUser .. '|' .. ipUser .. ']]'
	else
		return '[[User:' .. text .. '|' .. text .. ']]'
	end
end

function getTalkList(pageName)
	-- 输入页面名，返回一个包含文本的讨论信息表
	-- 例如：talklist[1][text]
	local talk = conv(mw.getCurrentFrame():expandTemplate {title = ':' .. pageName}) .. '=='
	local talkList = {}
	for topic in talk:gmatch '==\n(.-)==' do
		talkList[#talkList + 1] = topic
	end

	return talkList
end

function getTitleList(pageName)
	local talk = conv(mw.getCurrentFrame():expandTemplate {title = ':' .. pageName})
	local titleList = {}
	for title in talk:gmatch '==(.-)==' do
		titleList[#titleList + 1] = title
	end

	return titleList
end

function getTalkTime(talk)
	local result = talk:match '[%s%S]*(%d%d%d%d.*) %(CST%)' or '未知日期'

	return result
end

function getUserInfo(text)
	-- 输入讨论的文本，输出和User有关的转换部分table
	local userList = {}
	if text:match '[^\n]*User:([^\n]-)%|[^\n]-CST' == nil then
		return {userNum = '?', uniqueUserNum = '?', firstUser = '?', lastUser = '?'}
	end
	for user in text:gmatch '[^\n]*User:([^\n]-)%|[^\n]-CST' do
		userList[#userList + 1] = user
	end

	local userNum = #userList
	local uniqueUserNum = #(table.unique(userList, true))

	return {userNum = userNum, uniqueUserNum = uniqueUserNum, firstUser = userList[1], lastUser = userList[#userList]}
end

function generateTable(pageName, talkTitle, talkText)
	local body = {
		'{| class="wikitable sortable collapsible talktable" style="text-align: center;"',
		'|-',
		'! # !! 话题 !! 发言条数 ',
		'! class="talkpage-topic-list-author" | 发起者',
		'! class="talkpage-topic-list-last-editor" | 最后发言者',
		'! class="talkpage-topic-list-time" | 最后发言时间（CST）'
	}

	local userInfo, time
	local userStyle, uniqueUserStyle, timeStyle, serialStyle

	for i = 1, #talkText do
		time, userInfo = getTalkTime(talkText[i]), getUserInfo(talkText[i])
		-- 对表格添加样式
		userStyle = userInfo.userNum == 1 and 'background-color: #fcc;' or ''
		uniqueUserStyle = userInfo.uniqueUserNum == 1 and 'background-color: #fcc;' or ''
		timeStyle = getTimeStyle(time)
		serialStyle = close(talkText[i])
		-- 组装表格一个话题的部分
		table.insert(
			body,
			table.concat(
				{
					'|-',
					'! style="' .. serialStyle .. '" | ' .. i,
					'| [[' .. pageName .. '#' .. titleConv(trim(talkTitle[i])) .. '|' .. titleConv(trim(talkTitle[i])) .. ']]',
					'| style="' .. userStyle .. '" | ' .. userInfo.userNum,
					'| class="talkpage-topic-list-author" |' .. makeUserLink(userInfo.firstUser),
					'| class="talkpage-topic-list-last-editor" style="' .. timeStyle .. '" | ' .. makeUserLink(userInfo.lastUser),
					'| class="talkpage-topic-list-time" style="' .. timeStyle .. '" | ' .. time
				},
				'\n'
			)
		)
	end
	table.insert(body, '|}')

	return table.concat(body, '\n')
end

function p.main(frame)
	local args = getArgs(frame)
	local f = mw.getCurrentFrame()

	local talkTitle, talkText = getTitleList(args[1]), getTalkList(args[1])
	for i = 1, #talkTitle do
		talkTitle[i] = f:preprocess(talkTitle[i])
	end
	local result = generateTable(args[1], talkTitle, talkText)

	if #talkTitle == #talkText then
		return result
	else
		return error 'Topic list获取错误。'
	end
end

return p