Module:Skill

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

-- The skill infobox and per-level table of Template:Skill.
local p = {}

-- the per-level table's separator between cells (tools/wiki/gen_skills.py writes it)
local SEP = '¦'

local function lines(text)
	local out = {}
	for line in mw.text.gsplit(text or '', '\n', true) do
		line = mw.text.trim(line)
		if line ~= '' then
			table.insert(out, line)
		end
	end
	return out
end

local function cells(line)
	local out = {}
	for cell in mw.text.gsplit(line, SEP, true) do
		table.insert(out, mw.text.trim(cell))
	end
	return out
end

local function given(v)
	return v and mw.text.trim(v) ~= ''
end

-- "Fire Arrow, Ice Arrow": a link per skill
local function links(text)
	local out = {}
	for name in mw.text.gsplit(text or '', ',', true) do
		name = mw.text.trim(name)
		if name ~= '' then
			table.insert(out, '[[' .. name .. ']]')
		end
	end
	return table.concat(out, ', ')
end

local function row(box, label, value)
	local r = box:tag('div'):addClass('d2-skill-row')
	r:tag('span'):addClass('d2-skill-label'):wikitext(label)
	r:tag('span'):wikitext(value)
end

local function infobox(a)
	local box = mw.html.create('div'):addClass('d2-skill')
	if given(a.image) then
		box:tag('div'):addClass('d2-skill-image'):wikitext('[[File:' .. a.image .. '|link=|alt=]]')
	end
	box:tag('div'):addClass('d2-skill-name'):wikitext(a.name or mw.title.getCurrentTitle().text)
	if given(a.class) then
		local where = '[[' .. a.class .. ']]'
		if given(a.tree) then
			where = where .. ' · ' .. a.tree
		end
		box:tag('div'):addClass('d2-skill-class'):wikitext(where)
	elseif given(a.classes) then
		box:tag('div'):addClass('d2-skill-class'):wikitext('Item skill (' .. a.classes .. ')')
	end
	local desc = box:tag('div'):addClass('d2-skill-desc')
	for _, line in ipairs(lines(a.description)) do
		desc:tag('div'):wikitext(line)
	end
	local facts = box:tag('div'):addClass('d2-skill-facts')
	if given(a.reqlevel) then
		row(facts, 'Required level', a.reqlevel)
	end
	if given(a.prereqs) then
		row(facts, 'Requires', links(a.prereqs))
	end
	if given(a.synergies) then
		row(facts, 'Synergies', links(a.synergies))
	end
	if given(a.maxlvl) then
		row(facts, 'Maximum level', a.maxlvl)
	end
	if given(a.hardcap) then
		row(facts, 'Hard points', 'up to ' .. a.hardcap)
	end
	local fixed = lines(a.static)
	local formulas = lines(a.formulas)
	if #fixed + #formulas > 0 then
		local block = box:tag('div'):addClass('d2-skill-lines')
		for _, line in ipairs(fixed) do
			block:tag('div'):wikitext(line)
		end
		for _, line in ipairs(formulas) do
			block:tag('div'):addClass('d2-skill-formula'):wikitext(line)
		end
	end
	return box
end

local function level_table(a)
	local columns = cells(a.columns or '')
	local rows = lines(a.levels)
	if #rows == 0 or #columns == 0 then
		return nil
	end
	local t = mw.html.create('table')
		:addClass('wikitable mw-collapsible mw-collapsed d2-skill-levels')
	t:tag('caption'):wikitext('Values per skill level')
	local head = t:tag('tr')
	head:tag('th'):wikitext('Level')
	for _, c in ipairs(columns) do
		head:tag('th'):wikitext(c)
	end
	for _, line in ipairs(rows) do
		local tr = t:tag('tr')
		local v = cells(line)
		tr:tag('th'):wikitext(v[1])
		for i = 1, #columns do
			tr:tag('td'):wikitext(v[i + 1] or '')
		end
	end
	return t
end

function p.skill(frame)
	local a = frame:getParent().args
	local out = frame:extensionTag('templatestyles', '', { src = 'Template:Skill/styles.css' })
		.. tostring(infobox(a))
	local t = level_table(a)
	if t then
		out = out .. tostring(t)
	end
	return out
end

return p