Editing Module:Authority control

require('strict')
local p = {}
local title = mw.title.getCurrentTitle()
local namespace = title.namespace
local testcases = (string.sub(title.subpageText,1,9) == 'testcases')
local config = require("Module:Authority control/config")

local function addCat(cat,sortkey)
	if cat and cat ~= '' and (namespace == 0 or namespace == 14 or testcases) then
		local redlinkcat = ''
		if testcases == false and mw.title.new(cat, 14).exists == false then
			redlinkcat = '[[Category:Pages with red-linked authority control categories]]'
		end
		if sortkey then
			cat = '[[Category:'..cat..'|' .. sortkey .. title.text .. ']]'
		else
			cat = '[[Category:'..cat..']]'
		end
		cat = cat .. redlinkcat
		return cat
	else
		return ''
	end
end

local function getCatForId(id,faulty)
	local cat = 'Articles with '
	if faulty then cat = cat .. 'faulty ' end
	cat = cat .. id .. ' identifiers'
	return addCat(cat)
end

local function getIdsFromWikidata(qid,property)
	local ids = {}
	if not mw.wikibase or not qid then
		return ids
	end
	local statements = mw.wikibase.getBestStatements(qid,property)
	if statements then
		for _, statement in ipairs( statements ) do
			if statement.mainsnak.datavalue then
				table.insert( ids, statement.mainsnak.datavalue.value )
			end
		end
	end
	return ids
end

local function makelink(conf,val,nextid,qid) --validate values and create a link
	local link
	if nextid==1 then
		if conf.prefix then
			link = '*' .. conf.prefix .. '\n**'
		else
			link = '*'
		end
	else
		link = '\n**'
	end
	local valid_value = false
	if conf.link2 then -- use function to validate and generate link
		if conf.link2(val) then
			link = link .. conf.link2(val)
			valid_value = true
		end
	else
		if conf.pattern then -- use pattern to determine validity if defined
			valid_value = val:match(conf.pattern)
		elseif conf.patterns then
			for i = 1,#conf.patterns do
				valid_value = val:match(conf.patterns[i])
				if valid_value then break end
			end
		elseif conf.valid then -- otherwise use function to determine validity
			valid_value = conf.valid(val)
		else -- no validation possible
			valid_value = val
		end
		if valid_value then
			link = link .. '<span class="uid">'
			if not conf.label or nextid>1 then
				conf.label = tostring(nextid)
			end
			if conf.link then
				valid_value = valid_value:gsub('%%', '%%%%')
				link = link .. '[' .. mw.ustring.gsub(conf.link,'%$1',valid_value) .. ' ' .. conf.label .. ']'
			else
				link = link .. valid_value
			end
			link = link .. '</span>'
		end
	end
	if valid_value then
		link = link .. getCatForId(conf.category or conf[1])
	else
		--local preview = require("Module:If preview")
		local wdlink = qid and '[[:wikidata:' .. qid .. '#P' .. conf.property .. ']]' or ''
		link = link .. '[[File:345-409 Ambox warning centered.svg|20px|frameless|link=' .. wdlink ..'|The '..conf[1]..' id '..val..' is not valid.]]'
		if conf.errorcat then
			link = link .. addCat(conf.errorcat)
		else
			link = link .. getCatForId(conf.category or conf[1],true)
		end
		link = link .. addCat('All articles with faulty authority control information',conf[1])-- .. preview._warning({'The '..conf[1]..' id '..val..' is not valid.'})
	end
	return link
end

--[[==========================================================================]]
--[[                                   Main                                   ]]
--[[==========================================================================]]
function p.authorityControl(frame)
	local resolveEntity = require('Module:ResolveEntityId')
	local function resolveQID(qid)
		if qid then
			qid = 'Q'..mw.ustring.gsub(qid, '^[Qq]', '')
			qid = resolveEntity._id(qid) --nil if unresolvable
		end
		return qid
	end
	local conf = config.config
	local parentArgs = frame:getParent().args
	local iParentArgs = 0 --count original/manual parent args
	local iMatches = 0
	local auxCats = ''
	local rct = 0 -- total number of links returned
	local qid
	if namespace == 0 then
		qid = mw.wikibase.getEntityIdForCurrentPage()
	end
	if not qid then
		qid = resolveQID(parentArgs['qid']) --use qid parameter if no wikidata item is connected
	end
	local qids = {} -- setup any additional QIDs
	if parentArgs.additional and parentArgs.additional ~= '' then
		for _,v in ipairs(mw.text.split(parentArgs.additional,"%s*,%s*")) do
			table.insert(qids,resolveQID(v))
		end
	end

	local sections = {}
	for _ = 1,#config.sectionNames + #qids do table.insert(sections,{}) end
	local qslink = '' -- setup link to add using QuickStatements

	-- check which identifiers to show/suppress in template
	local show = {} -- setup list
	local showall = true
	local function addshowlist(list)
		if list and list ~= '' then
			for _,v in ipairs(mw.text.split(string.lower(list),"%s*,%s*")) do
				if config.whitelists[v] then
					for _,w in ipairs(config.whitelists[v].properties) do
						show[w] = true
					end
				end
			end
			showall = false
		end
	end
	addshowlist(frame.args.show) -- check show= parameter on wrapper template
	addshowlist(parentArgs.show or parentArgs.country) -- check show parameter on article template
	if parentArgs.suppress then
		local suppresslist = mw.text.split(parentArgs.suppress,"%s*,%s*") -- split parameter by comma
		for _,v in ipairs(suppresslist) do
			if v:match("^[Pp]%d+$") then
				v = mw.ustring.gsub(v,'[Pp]','') --strip P from property number
			end
			if v:match("^%d+$") then
				v = tonumber(v)
			else
				v = string.upper(v) -- convert to uppercase
			end
			show[v] = false
		end
	end
	
	local function makeSections(qid,addit)
		local tval = {}
		local function parameter_is_used(property)
			local used = false
			if property then
				if tval[property] then
					if tval[property][1] then
						used = true
					end
				elseif tval[property] == false then -- property has been manually suppressed
					used = true
				end
			end
			return used
		end
		for _, params in ipairs(conf) do
			tval[params.property] = getIdsFromWikidata(qid, 'P' .. params.property) -- setup table for values with property number as key
			local showb = true
			if (show[params.property] == nil) and (show[string.upper(params[1])] == nil ) then
				showb = showall -- if not specified then depends on showall
			elseif (show[params.property] == false) or (show[string.upper(params[1])] == false) then -- if either are false then id will be suppressed
				showb = false
			end
			if addit then
				if not showb then
					tval[params.property] = false -- indicates the identifier is suppressed
				end
			else
				local val = parentArgs[mw.ustring.lower(params[1])] or parentArgs[params[1]]
				if not showb or val == '' then
					tval[params.property] = false -- indicates the identifier is suppressed
				elseif val then -- add local parameter to list if not already in 
					iParentArgs = iParentArgs + 1
					local bnew = true
					for _, w in pairs(tval[params.property]) do
						if val == w then
							bnew = false
						end
					end
					if bnew then -- add new value to table
						if tval[params.property][1] then
							auxCats = auxCats .. '[[Category:Pages using authority control with parameters different on Wikidata|'..params[1]..']]'
						end
						if qid then
							qslink = qslink .. '%7C%7C' .. qid .. '%7CP' .. params.property .. '%7C%22' .. mw.uri.encode(val,"PATH") .. '%22%7CS143%7CQ328'
						end
						table.insert(tval[params.property],val)
					else
						iMatches = iMatches+1
					end
				end
			end
			local suppress = false
			if params.suppressedbyproperty then
				for _,sc in ipairs(params.suppressedbyproperty) do
					if parameter_is_used(sc) then
						suppress = true
					end
				end
			end
			if tval[params.property] ~= false and not suppress then
				local tlinks = {} -- setup table for links
				local nextIdVal = 1
				local row = ''
				for _,val in ipairs(tval[params.property]) do
					local link = makelink(params,val,nextIdVal,qid)
					row = row .. link
					table.insert(tlinks,link)
					nextIdVal = nextIdVal + 1
				end
				if nextIdVal>=2 then
					row = row .. '\n'
					table.insert(sections[addit or params.section],row)
					rct = rct + 1
				end
			end
		end
	end
	local function pencil(qid)
		if not qid then
			return ''
		end
		local args = { pid = 'identifiers' } -- #target the list of identifiers
		args.qid = qid
		return require('Module:EditAtWikidata')._showMessage(args)
	end

	makeSections(qid,false)
	for c = 1,#qids do
		makeSections(qids[c],#config.sectionNames+c)
	end
	if iMatches > 0 and iMatches == iParentArgs then
		auxCats = auxCats .. '[[Category:Pages using authority control with parameters all matching Wikidata]]'
	end

	--configure Navbox
	local outString = ''
	if rct > 0 then -- there is at least one link to display
		local Navbox = require('Module:Navbox')
		local sect,lastsect = 0,0
		local navboxArgs = {
			name  = 'Authority control',
			navboxclass = 'authority-control',
			bodyclass = 'hlist',
			state = parentArgs.state or 'autocollapse',
			navbar = 'off'
		}
		for c=1,#config.sectionNames+#qids do
			if #sections[c] ~= 0 then -- section is non-empty
				sect = sect + 1
				lastsect = c
				local sectname
				if c <= #config.sectionNames then -- regular section
					sectname = config.sectionNames[c]
				else -- section from additional qid
					sectname = mw.wikibase.getLabel(qids[c-#config.sectionNames]) .. pencil(qids[c-#config.sectionNames])
				end
				navboxArgs['group' .. c] = sectname
				navboxArgs['list' .. c] = table.concat(sections[c])
			end
		end
		local aclink = '[[Help:Authority control|Authority control]]'
		if qslink ~= '' then
			qslink = '<span class="qs autoconfirmed-show">&#32;[[File:Commons to Wikidata QuickStatements.svg|20px|link=https://quickstatements.toolforge.org/#/v1=' .. qslink .. '|Add values to Wikidata.]]</span>'
		end
		if sect == 1 then -- special display when only one section
			if lastsect == 1 or lastsect == 8 then -- no special label when only general or other IDs are present
				navboxArgs['group' .. lastsect] = aclink .. pencil(qid) .. qslink
			elseif lastsect <= #config.sectionNames then -- other regular section
				navboxArgs['group' .. lastsect] = aclink .. ': ' .. config.sectionNames[lastsect] .. pencil(qid) .. qslink
			else -- section from additional qid
				navboxArgs['group' .. lastsect] = aclink .. ': ' .. navboxArgs['group' .. lastsect] .. qslink
			end
		else -- add title to navbox
			navboxArgs.title = aclink .. pencil(qid) .. qslink
		end
		outString = Navbox._navbox(navboxArgs)
	end

	if parentArgs.state then
		if namespace == 0 or testcases then
			local sCat
			if parentArgs.state == 'collapsed' then sCat = 'AC using state parameter: collapsed'
			elseif parentArgs.state == 'expanded' then sCat = 'AC using state parameter: expanded'
			elseif parentArgs.state == 'autocollapse' then sCat = 'AC using state parameter: autocollapse'
			else sCat = 'AC using state parameter: other'
			end
			auxCats = auxCats .. addCat(sCat)
		end
	end
	if testcases then
		auxCats = mw.ustring.gsub(auxCats, '(%[%[)(Category)', '%1:%2') --for easier checking
	end

	--out
	outString = outString..auxCats
	if namespace ~= 0 then
		outString = mw.ustring.gsub(outString,'(%[%[)(Category:Articles)([^%|%]]+)%|?[^%|%]]*(%]%])','%1:%2%3%4')
		outString = mw.ustring.gsub(outString,'(%[%[)(Category:All articles)([^%|%]]+)%|?[^%|%]]*(%]%])','%1:%2%3%4')
	end
	local check = require('Module:Check for unknown parameters')._check
	local sortkey
	if namespace == 0 then
		sortkey = '*' .. title.text
	else
		sortkey = title.fullText
	end
	local tracking = check({
		['unknown']='[[Category:Pages using authority control with parameters|' .. sortkey .. ']]',
		['preview']='Page using [[Template:Authority control]] with "_VALUE_", please move this to Wikidata.',
		'show', 'country', 'suppress', 'additional', 'qid', 'state'
		}, parentArgs)
	if namespace == 0 -- mainspace
		or namespace == 14 -- category
		or namespace == 2 -- user
		or namespace == 118 then -- draft
		outString = outString .. tracking
	end
	return outString
end

-- Creates a human-readable standalone wikitable version of conf, and tracking categories with page counts, for use in the documentation
function p.docConfTable(frame)
	local wikiTable = '<table class="wikitable sortable">'..
	  '<tr><th>Code</th>'..
	  '<th>Identifier</th>'..
	  '<th data-sort-type=number>Wikidata property</th>'..
	  '<th>Section</th>'..
	  '<th>Appears as</th>'..
	  '<th>[[:Category:Articles with authority control information|Articles]]</th>'..
	  '<th>[[:Category:Articles with faulty authority control information|Faulty IDs]]</th></tr>'
	local columns = 7
	local lang = mw.getContentLanguage()
	local a, f, P = 0, 0, 0 --cumulative sums
	local getlink = require("Module:Wikidata table")._getLink
	local function checkcat(category,label)
		local ret='[[:Category:'..category..'|'..label..']]'
		if mw.title.new(category, 14).exists == false then
			ret = ret..' <span class="plainlinks" style="font-size:85%;">&#91;['..tostring(mw.uri.fullUrl('Category:'..category,'action=edit&preload=Template:Authority_control/preload'))..' create]&#93;</span>'
		end
		return ret
	end
	for _, conf in pairs(config.config) do
		local category = conf.category or conf[1]
		local articleCat = 'Articles with '..category..' identifiers'
		local faultyCat =  conf.errorcat or 'Articles with faulty '.. (conf.errorcat or category) ..' identifiers'
		local articleCount = lang:formatNum( mw.site.stats.pagesInCategory(articleCat, 'pages') )
		local faultyCount =  lang:formatNum( mw.site.stats.pagesInCategory(faultyCat, 'pages') )
		P = P + 1 --property count
		a = a + lang:parseFormattedNumber(articleCount)
		f = f + lang:parseFormattedNumber(faultyCount)
		local name = mw.wikibase.getBestStatements('P'..conf.property,"P9073")
		if name then
			if name[1] then
				name = name[1].mainsnak.datavalue.value.id
				if name then
					name = getlink(name)
				end
			else
				name = false
			end
		end
		if conf.remark then
			wikiTable = wikiTable..'<tr><td rowspan=2>'
		else
			wikiTable = wikiTable..'<tr><td>'
		end
		wikiTable = wikiTable..'[['..(conf.idlink or conf[1]..' (identifier)')..'|'..conf[1]..']]</td>'
		wikiTable = wikiTable..'<td>'..(name or '')..'</td>'..
			'<td data-sort-value='..conf.property..'>' .. frame:expandTemplate{ title = 'Wikidata property link', args = { id = 'f', conf.property } } .. '</td>'..
			'<td>'..config.sectionNames[conf.section]..'</td>'..
			'<td>' .. mw.getCurrentFrame():expandTemplate{title = "Hlist", args = {'\n' .. makelink(conf,conf.example,1)}} .. '\n</td>'..
			'<td style="text-align: right;">'..checkcat(articleCat,articleCount)..'</td>'..
			'<td style="text-align: right;">'..checkcat(faultyCat,faultyCount)..'</td></tr>'
		if conf.remark then
			wikiTable = wikiTable.."<tr><td colspan=" .. columns-1 .. "6>'''Remarks:''' "..conf.remark.."</td></tr>"
		end
	end
	wikiTable = wikiTable..'<tr><th style="text-align: right;" colspan=' .. columns-3 .. '>Totals</th>'..
		'<th style="text-align: right;">'..lang:formatNum(P)..'</th>'..
		'<th style="text-align: right;">'..lang:formatNum(a)..'</th>'..
		'<th style="text-align: right;">' .. '[[:Category:All articles with faulty authority control information|' .. lang:formatNum(f) .. ']]</th></tr></table>'
	return require('Module:Suppress categories').main(wikiTable)
end

function p.whitelisttable(frame)
	local Table = '<table class="wikitable sortable">'..
	  '<tr><th>Code</th>'..
	  '<th>Topic</th>'..
	  '<th>Identifiers</th></tr>'
	for code, wlist in pairs(config.whitelists) do
		Table = Table .. '<tr><th>' .. code .. '</th>'..
			'<td>[[' .. mw.wikibase.getSitelink('Q' .. wlist.topic) .. ']]</td>'
		local plist = {}
		for _, property in pairs(wlist.properties) do
			table.insert(plist,frame:expandTemplate{title='Wikidata property link', args={'P' .. property}})
		end
		Table = Table .. '<td>' .. table.concat(plist,', ') .. '</td></tr>'
	end
	Table = Table .. '</table>'
	return Table
end

-- Main/External Call for Pages with authority control identifiers
function p.autoDetect( frame )
	local function whichTOC( frame ) -- standardize TOC behavior via {{CatAutoTOC}}
		return frame:expandTemplate{ title = 'CatAutoTOC', args = { align = 'center' } }
	end
	local ac_conf = require('Module:Authority control/config').config
	local rmCats = require('Module:Suppress categories').main
	--For use in [[Category:Articles with faulty authority control information]], i.e. on [[Category:Articles with faulty VIAF identifiers]]
	local function wpfaulty( frame, id )
		for _, conf in pairs(ac_conf) do
			if conf.category == id or conf[1] == id then
				local outString = frame:expandTemplate{ title = 'Cat more', args = {'Wikipedia:Authority control', conf.idlink or conf[1]..' (identifier)', ':d:Property:P'..conf.property} }
					.. frame:expandTemplate{ title = 'Possibly empty category' }
					.. frame:expandTemplate{ title = 'Wikipedia category', args = { hidden = 'yes', tracking = 'yes' } }
					.. frame:expandTemplate{ title = 'Polluted category' }
					.. whichTOC( frame )
					.. '\nPages in this category should only be added by [[Module:Authority control]].'
					.. addCat('Articles with '..id..' identifiers')
					.. addCat('Articles with faulty authority control information',id)
				return outString
			end
		end
		return ''
	end
	--For use in [[Category:Articles with authority control information]], i.e. on [[Category:Articles with VIAF identifiers]]
	local function wp(frame,id )
		for _, conf in pairs( ac_conf ) do
			if conf.category == id or conf[1] == id then
				local link = '[[' .. (conf.idlink or conf[1] .. ' (identifier)') .. '|' .. conf[1] .. ']]'
				local outString = frame:expandTemplate{ title = 'Category explanation', args = {'articles with '..link..' identifiers.'..' Please do not add [[Wikipedia:Categorization#Subcategorization|subcategories]].'} }
					.. frame:expandTemplate{ title = 'Cat more', args = {'Wikipedia:Authority control', ':d:Property:P'..conf.property} }
					.. frame:expandTemplate{ title = 'Possibly empty category' }
					.. frame:expandTemplate{ title = 'Wikipedia category', args = { hidden = 'yes', tracking = 'yes' } }
					.. whichTOC( frame )
					.. '\nPages in this category should only be added by [[Module:Authority control]].'
					.. addCat('Articles with authority control information',id)
				return outString
			end
		end
		return ''
	end
	if namespace == 14 then --cat space
		local wpfaultyID = mw.ustring.match(title.text, 'Articles with faulty ([%w%.%- ]+) identifiers')
		local wpID       = mw.ustring.match(title.text, 'Articles with ([%w%.%- ]+) identifiers')
		if wpfaultyID then
			return wpfaulty(frame,wpfaultyID)-- must be before wpID check, in case they both match
		elseif wpID then
			return wp(frame, wpID)-- to keep the regex simple
		else
			return '[[Category:Pages with authority control identifiers unknown category]]'
		end
	end
	return ''
end

return p