Editing Module:Funni categorizer2

local p = {}
local core = require('Module:Infobox categorizer')
local config = mw.loadData('Module:Funni categorizer2/config')

local where = 'Module:Funni categorizer2/config'
local dims = core.need(config, 'dimensions', where)
local maintenance = core.need(config, 'maintenance', where)
local invalidOverrideCat = core.need(maintenance, 'invalidOverride', where .. '.maintenance')
local usingOverrideCat = core.need(maintenance, 'usingOverride', where .. '.maintenance')

local D = {}
for _, key in ipairs({
	'type',
	'year',
	'site',
	'parent',
	'posts',
}) do
	D[key] = core.need(dims, key, where .. '.dimensions')
end

local types = core.compileAliasSet({ core.need(config, 'types', where) }, { match = 'substring' })
local sites = core.compileAliasSet({ mw.loadData('Module:Infobox categorizer/sites') }, { match = 'substring' })
local variants = core.compileAliasSet({ mw.loadData('Module:Infobox categorizer/variants') })
local siteBucket = core.fromMap(config.siteBuckets or {}) -- unused now, for future folding split sites back into Other-site categories
local misuseCfg = core.need(config, 'misuse', where)
local misuse =
	core.compileAliasSet({ { { category = 'trend', aliases = core.need(misuseCfg, 'aliases', where .. '.misuse') } } })
core.need(misuseCfg, 'warning', where .. '.misuse')
core.need(misuseCfg, 'maintenance', where .. '.misuse')

local function aliasOverride(compiled)
	return function(value)
		return core.parseAliasSetOverride(value, compiled)
	end
end

local function typeOverride(value)
	return core.parseExactOverride(value, { 'variant', 'subvariant' })
end

local function variantCanon(value)
	local found, valid = core.parseAliasSetOverride(value, variants)
	return valid and found[1] or value
end

local function maint(dim, key)
	return dim.maintenance and dim.maintenance[key]
end

function p._categories(args)
	local out = core.newList()
	local function has(field)
		return core.trim(args[field]) ~= ''
	end

	local function emit(pattern, state)
		for _, value in ipairs(state.values) do
			out:add(core.fill(pattern, value))
		end
	end

	local typeMatches = core.matchAliasSets(args.type, types)
	local misused = #core.matchAliasSets(args.type, misuse) > 0
	if misused then
		mw.addWarning(misuseCfg.warning)
		out:add(misuseCfg.maintenance)
	end

	local detectedType = 'variant'
	for _, value in ipairs(typeMatches) do
		if value == 'subvariant' then detectedType = 'subvariant' end
	end

	local kind = core.resolve {
		candidates = { detectedType },
		override = args.category_type,
		parse = typeOverride,
		max = 1,
	}
	local classification = kind.values[1]
	if kind.source ~= 'override' and has('type') and #typeMatches == 0 and not misused then
		out:add(maint(D.type, 'unrecognized'))
	end

	local year = core.resolve {
		candidates = core.findYears(args.origin),
		override = args.category_year,
		parse = core.parseYearOverride,
		suppress = args.noyearcat, -- backward compatability
		max = 1,
	}
	if year.source ~= 'suppressed' then
		if year.values[1] then
			out:add(core.fill(D.year.name[classification], year.values[1]))
		else
			out:add(D.year.undated[classification])
		end
		if year.overflow then out:add(maint(D.year, 'overflow')) end
	end

	local site = core.resolve {
		candidates = core.matchAliasSets(args.origin, sites),
		override = args.category_site,
		parse = aliasOverride(sites),
		canon = siteBucket,
	}
	emit(D.site.name[classification], site)
	if site.source == 'detected' and site.undetected then out:add(maint(D.site, 'unrecognized')) end

	local parent = core.resolve {
		candidates = core.findLinkTargets(args.based_on),
		override = args.category_parent,
		parse = core.parseLinkTargetOverride,
		canon = variantCanon,
		applicable = classification == 'subvariant',
		suppress = args.noparentcat,
		max = 3,
	}
	if parent.source == 'detected' or parent.source == 'override' then
		emit(D.parent.name, parent)
		if #parent.values == 0 then out:add(maint(D.parent, 'undetected')) end
		if parent.overflow then out:add(maint(D.parent, 'overflow')) end
	end

	if classification == 'variant' then
		local counts = core.readDataAttr(args.booru_posts, 'boorusearch-count')
		if #counts == 0 then
			out:add(maint(D.posts, 'missing'))
		else
			out:add(core.pickBand(core.parseNumber(counts[1]), D.posts.bands))
		end
	end

	if core.anyCustomized(kind, year, site, parent) then out:add(usingOverrideCat) end

	if core.anyInvalid(kind, year, site, parent) then out:add(invalidOverrideCat) end
	return out
end

p.main = core.makeMain(p._categories, config.namespaces)

return p