local p = {}
local getArgs = require('Module:Arguments').getArgs
local isIpOrRange = require('Module:IPAddress')._isIpOrRange
local yesno = require('Module:Yesno')
local m_checkuser = require('Module:Checkuser')
local checkip = m_checkuser._ip
local checkuser = m_checkuser._user

function p.main(frame)
	local args = getArgs(frame)
	return p._main(frame, args)
end

function listEntry(frame, args, sockNum, sock)
	local template = (isIpOrRange(sock) ~= "")
		and (args.IP_template or args.template or 'checkip')
		or (args.account_template or args.template or 'checkuser')
	local li = mw.html.create('li')
	local text
	if template == 'checkip' then
		text = checkip(sock, args.master)
	elseif template == 'checkuser' then
		text = checkuser(sock, args.master)
	end
	if args['strike' .. sockNum] then
		text = "<s>" .. text .. "</s>"
	end
	local note = args['note' .. sockNum]
	if note then
		text = text .. " " .. note
	end
	li:wikitext(text)
	return li
end

function toolEIA(args)
	local url = "https://tools.wmflabs.org/sigma/editorinteract.py?users="
		.. mw.uri.encode(args.master or "")
	for i, sock in ipairs(args) do
		if not args['strike' .. i] then
			url = url .. "&users=" .. mw.uri.encode(sock)
		end
	end
	return "[" .. url .. " Editor interaction utility]"
end

function toolTimeline(args)
	local url = "https://tools.wmflabs.org/interaction-timeline?wiki=enwiki&user="
		.. mw.uri.encode(args.master or "") .. "&user=" .. mw.uri.encode(args[1] or "")
	return "[" .. url .. " Interaction Timeline]"
end

function toolSpiTools(args)
	local url = "https://spi-tools.toolforge.org/spi/?caseName="
		.. mw.uri.encode(args.master or "")
	return "[" .. url .. " SPI Tools]"
end

function p._main(frame, args)
	local socklist = mw.html.create('ul')
	if yesno(args.hidden) then
		socklist:attr('style', 'display:none;')
	end
	if args[1] then
		for sockNum, sock in ipairs(args) do
			if args.master ~= sock or not yesno(args.remove_master or 'no') then
				socklist:node(listEntry(frame, args, sockNum, sock))
	end end end
	if yesno(args.tools_link) then
		local tools = mw.html.create('li')
		tools
			:attr('class', 'plainlinks')
			:wikitext("<b>Tools</b>: ")
			:node(toolEIA(args))
			:wikitext(" <b>&middot;</b> ")
			:node(toolTimeline(args))
			:wikitext(" <b>&middot;</b> ")
			:node(toolSpiTools(args))
		socklist:node(tools)
	end
	return socklist
end

return p