Module:Stonecutting

Documentation for this module may be created at Module:Stonecutting/doc

------------------------------------------------------------
--  Module:Stonecutting  ·  Stone-cutter recipe carousel
------------------------------------------------------------

local p       = {}
local getArgs = require('Module:Arguments').getArgs
local trim    = mw.text.trim

------------------------------------------------------------------------
-- slotImage(label, image, link) → wikitext thumbnail
------------------------------------------------------------------------
local function slotImage(label, image, link)
	if not label or label == '' then
		return ''
	end
	local file = (image ~= '' and image) or ('Grid_' .. label .. '.png')
	local tgt  = (link  ~= '' and link ) or label
	return string.format(
		'[[File:%s|32px|class=pixelated|link=%s|alt=%s]]',
		file, tgt, label
	)
end

------------------------------------------------------------------------
-- buildFrame(args, idx) → html for one output variant
------------------------------------------------------------------------
local function buildFrame(args, idx)
	local inL   = args.input                  or args[1] or ''
	local inI   = args['input-image']         or ''
	local inLn  = args['input-link']          or ''

	local outL  = args['output' .. idx]             or args[idx + 1] or ''
	local outI  = args['output' .. idx .. '-image'] or ''
	local outLn = args['output' .. idx .. '-link']  or ''

	local html = mw.html.create('div'):addClass('sc-frame')
	html:wikitext('[[File:StonecutterGUI.png|180px|link=|alt=]]')

	html:tag('div'):addClass('sc-slot')
	    :css{left = '11px',  top = '50px'}
	    :wikitext(slotImage(inL, inI, inLn))

	html:tag('div'):addClass('sc-slot')
	    :css{left = '56.5px', top = '23px'}
	    :wikitext(slotImage(outL, outI, outLn))

	html:tag('div'):addClass('sc-slot')
	    :css{left = '127px', top = '50px'}
	    :wikitext(slotImage(outL, outI, outLn))

	return tostring(html)
end

------------------------------------------------------------------------
-- main entry
------------------------------------------------------------------------
function p.carousel(frame)
	local args = getArgs(frame, {removeBlanks = false})

	-- count non-blank outputs
	local count = 0
	while true do
		local raw = args['output' .. (count + 1)] or args[count + 2]
		if not raw or trim(tostring(raw)) == '' then
			break
		end
		count = count + 1
	end
	if count == 0 then
		return '<span style="color:red">Stonecutting: no outputs supplied</span>'
	end

	-- outer wrapper
	local outer = mw.html.create('div')
		:addClass('stonecutting-carousel')
		:css{width = '180px', height = '131px', position = 'relative'}

	for i = 1, count do
		outer:wikitext(buildFrame(args, i))
	end

	------------------------------------------------------------------
	-- 1. STATIC stylesheet (same for every page)
	------------------------------------------------------------------
	outer:wikitext(frame:extensionTag(
		'templatestyles',
		nil,                                   -- *no* body
		{src = 'Stonecutting/styles.css'}      -- link to page
	))

	------------------------------------------------------------------
	-- 2. DYNAMIC stylesheet (depends on #outputs)
	------------------------------------------------------------------
	local dur = count * 4          -- 4 s per recipe
	local pct = 100 / count
	local vis = pct - 0.01         -- stay visible almost the whole slice

	local css = {}
	css[#css+1] = string.format(
		'.stonecutting-carousel .sc-frame{animation:sc-cycle %ds step-start infinite;}',
		dur
	)
	for i = 1, count do
		css[#css+1] = string.format(
			'.stonecutting-carousel .sc-frame:nth-child(%d){animation-delay:%ds;}',
			i, (i - 1) * 4
		)
	end
	css[#css+1] = string.format(
		'@keyframes sc-cycle{0%%{opacity:1;} %.2f%%{opacity:1;} %.2f%%{opacity:0;} 100%%{opacity:0;}}',
		vis, pct
	)

	-- ordinary <style> tag is safe and avoids the templatestyles pitfalls
	outer:tag('style'):wikitext(table.concat(css))

	return tostring(outer)
end

return p