require('strict')
local p = {}
local sandbox-- = '/sandbox'
local cfg = mw.loadData('Module:WikiProject banner/config' .. (sandbox or ''))
local auxiliary = cfg.auxiliary_module .. (sandbox or '')
local args_module = require('Module:Arguments')
local mbox = require('Module:Message box').main
local yesno = require('Module:Yesno')
local frame = mw.getCurrentFrame()
local lang = mw.getLanguage(cfg.language)
local current_title = mw.title.getCurrentTitle()
local parameter_format = function(parameter, value)
	return frame:expandTemplate{title='para', args={parameter, value or ''}}
end

local wikilink = function(link, display)
	if link then
		return display and '[['..link..'|'..display..']]' or '[['..link..']]'
	else
		return display or ''
	end
end
local display_error = function(text)
	local span = mw.html.create('div')
		:addClass('error')
		:wikitext(text)
	return tostring(span)	
end

local image = function(image_name, size, alt, position)
	return image_name and '[[File:'
		.. image_name
		.. (size and '|' .. size or '')
		.. (position and '|' .. position or '')
		.. (alt and '|alt=' .. alt or '')
		.. ']]'
end

local if_exists = function(target, fallback) -- function to add wikilink if target exists
	local title = mw.title.new(target)
	if title and title.exists then
		return wikilink(target)
	else
		return fallback or target
	end
end

local isarticle = function(class)
	local article = true
	for _,v in ipairs(cfg.quality.non_article_classes) do
		if class==v then -- class matches one of the non-article classes
			article = false
			break
		end
	end
	return article
end

local importance_mask = function(raw_importance, class, scale, banner_name, pagetype)
---------------------------
-- Importance mask --------
---------------------------
local importance
if scale=='inline' then -- pass importance without change
	importance = raw_importance
elseif scale=='subpage' then
	local custom_mask = banner_name:subPageTitle('importance')
	if custom_mask.exists and #custom_mask:getContent()>1 then -- pass to custom importance mask
		importance = mw.text.trim(frame:expandTemplate{
			title = custom_mask.prefixedText,
			args = {
				importance = raw_importance or '¬',
				class = class,
				pagetype = pagetype
			}
		})
	end
elseif raw_importance then-- standard importance scale
	if pagetype=='article' then
		local mask = cfg.importance.mask
		if mask[raw_importance:lower()] then -- valid importance specified
			importance = mask[raw_importance:lower()]
		else -- unspecified or invalid importance, use "Unknown"
			importance = cfg.importance.unknown
		end
	else -- set "NA" importance
		importance = cfg.importance.na
	end
end
return importance
end

---------------------------
-- Quality class mask -----
---------------------------
p.readarticleclass = function(options, page) -- used by _main and also Module:Banner shell
	page = page or current_title.prefixedText
	local get_parameter_value = require('Module:Template parameter value').getParameter
	local success, result = get_parameter_value(page, cfg.banner_shell.redirects, 'class', options)
	return success and result
	-- returns FALSE if banner shell template does not exist on page
	-- returns BLANK if class parameter is not defined or is defined blank
	-- otherwise returns class parameter
end
p.class_mask = function(class, title, FQS, pagetype)
	local resolveFQSgrade = function(class)
		return FQS and lang:ucfirst(class) or 'NA'
	end
	local out
	title = title or mw.title.getCurrentTitle()
	local ns = title.namespace
	class = class:match('^%s*(.-)%s*$'):lower()
	if pagetype=='redirect' or pagetype=='soft redirect' then
		out = resolveFQSgrade('redirect')
	elseif pagetype=='disambiguation page' then
		out = resolveFQSgrade('disambig')
	elseif pagetype=='article' then
		if class=='start' or class=='stub' then -- Ucfirst
			out = lang:ucfirst(class)
		elseif class=='b' or class=='c' or class=='fa' or class=='fl' or class=='a' or class=='ga' then -- Upper-case
			out = class:upper()
		elseif class=='list' or class=='sia' or class=='si' or class=='sl' then-- List
			out = 'List'
		else
			out = '' -- unassessed
		end
	elseif ns==7 or ns==711 then -- File talk
		if class=='fm' and FQS then
			out = 'FM'
		else
			out = resolveFQSgrade('file')
		end
	else
		-- Define a table that maps namespace IDs to category names
		local ns_to_category = {
			[15] = 'category',	-- Category talk
			[101] = 'portal',	-- Portal talk
			[11] = 'template',	-- Template talk
			[829] = 'template',	-- Module talk
			[5] = 'project',	-- Wikipedia talk
			[119] = 'draft'		-- Draft talk
		}
	    local category = ns_to_category[ns] or 'NA'
		out = resolveFQSgrade(category)
	end
	return out
end

local page_assessment = function(project, class, importance) -- add PageAssessments parser function
	local assessment = table.concat({project, class or '', importance or ''},'|')
	frame:preprocess('{{#assessment:' .. assessment .. '}}')
end

local bubble = function(text, conflict, style)
	local out = mw.html.create('span')
		:addClass('wpb-header-bubbles')
		:addClass(style)
		:addClass(conflict and 'conflict' or nil)
		:wikitext(text)
	return tostring(out)
end

p._main = function(args, raw_args, demo_page, banner_name, inactive)
---------------------------
-- Initialise parameters --
---------------------------
local project = args.PROJECT or 'PROJECT'
local project_name = args.PROJECT_NAME or 'WikiProject ' .. project
local project_link = mw.title.new(args.PROJECT_LINK or 'Wikipedia:' .. project_name)
local pagetype = demo_page==true and 'article' or require('Module:Pagetype' .. (sandbox or ''))._main({
	page = demo_page,
	dab = 'disambiguation page'
})
local rows, nested_ratings, task_forces, notes, categories, taskforce_categories = {}, {}, {}, {}, {}, {}
local add_category = function(category, key)
	if category and category~='none' then
		table.insert(categories, {category = category, key = key})
	end
end
local parse_text = function(text)
	return text and text:gsub('_PAGETYPE_', pagetype)
end
for arg_name, arg_value in pairs(args) do
	local tf_match = mw.ustring.match(arg_name,'^tf (%d+)$')
	local note_match = mw.ustring.match(arg_name,'^note (%d+)$')
	if tf_match and yesno(arg_value, true) then
		table.insert(task_forces, tf_match)
	elseif note_match and yesno(arg_value, true) then
		table.insert(notes, note_match)
	else
		local tf, cat = mw.ustring.match(arg_name,'^tf (%d+) cat (%d+)$')
		if tf and yesno(arg_value, true) then
			if not taskforce_categories[tf] then -- initialise table
				taskforce_categories[tf] = {}
			end
			table.insert(taskforce_categories[tf], cat)
		end
	end
end
table.sort(task_forces, function (x, y) return tonumber(x) < tonumber(y) end)
table.sort(notes, function (x, y) return tonumber(x) < tonumber(y) end)
---------------------------
-- Location warning -------
---------------------------
local warning = ''
local show_namespace_warning = not (current_title.isTalkPage or demo_page)
if show_namespace_warning then
	local text = cfg.namespace_warning.text:format(
		pagetype,
		current_title.talkPageTitle.fullText,
		parameter_format('category', 'no')
	)
	local sortkey = current_title.namespace==10 and cfg.namespace_warning.sortkey_on_template_page or cfg.namespace_warning.sortkey
	if current_title.namespace==10 then -- on the Template namespace
		text = text .. '  ' .. cfg.namespace_warning.on_template_page:format(
			parameter_format('BANNER_NAME'),
			current_title.prefixedText
		)
	end
	warning = mbox('ombox', {
		image = '[[File:' .. cfg.namespace_warning.image .. '|40px]]',
		type = cfg.namespace_warning.type_,
		text = text
	})
	if not current_title.subjectPageTitle:inNamespace(2) then
		add_category(cfg.namespace_warning.categories, sortkey)
	end
end
---------------------------
-- Substitution warning ---
---------------------------
if args.substcheck=='SUBST' then
	local text = cfg.subst_warning.text:format(
		project_name,
		'<code>&#123;&#123;'..banner_name.prefixedText..'&#125;&#125;</code>'
	)
	warning = warning .. mbox('ombox', {
		image = '[[File:' .. cfg.subst_warning.image .. '|40px]]',
		type = cfg.subst_warning.type_,
		text = text,
	}) .. cfg.subst_warning.categories
end
---------------------------
-- Primary image/text -----
---------------------------
local assessment_cat = args.ASSESSMENT_CAT or project .. ' articles'
local primary_image = function(image_name, size)
	local cell = mw.html.create('td')
	if image_name and image_name~='' then
		cell
			:addClass('mbox-image wpb-image')
			:wikitext(image(image_name, size, cfg.image.alt))
	else
		cell:addClass('mbox-empty-cell')
	end
	return cell
end
local portal = args.PORTAL
local portal_box = portal and frame:expandTemplate{title='Portal', args={portal}} or ''
local main_text = portal_box .. (parse_text(args.MAIN_TEXT) or cfg.main_text:format(
	pagetype,
	project_link.prefixedText,
	project_name,
	args.MAIN_ARTICLE and if_exists(args.MAIN_ARTICLE) or if_exists(project, project .. ' articles'),
	project_link.talkPageTitle.prefixedText
))
local image_left_size = args.IMAGE_LEFT_SIZE or cfg.image.default_size
local metadata = function(class, data)
	return mw.html.create('span')
		:addClass(class)
		:wikitext(data)
end
local text_cell = mw.html.create('td')
	:addClass('mbox-text')
	:wikitext(main_text)
	:tag('span')
		:addClass('metadata wpb-metadata')
		:node(metadata('wpb-project', project))
		:node(metadata('wpb-project_link', project_link.prefixedText))
		:node(metadata('wpb-banner_name', banner_name.prefixedText))
		:node(metadata('wpb-assessment_cat', assessment_cat))
	:done()
local primary_row = mw.html.create('tr')
	:node(primary_image(args.IMAGE_LEFT, image_left_size))
	:node(text_cell)
	:node(primary_image(args.IMAGE_RIGHT, args.IMAGE_RIGHT_SIZE or cfg.image.default_size))
table.insert(rows, primary_row)
---------------------------
-- Banner shell checks ----
---------------------------
local title = demo_page and demo_page~=true and mw.title.new(demo_page) or current_title
local article_class = p.readarticleclass({ignore_subtemplates=true}, title.prefixedText)
if article_class then -- banner shell exists
	local special_chars = '([%%%(%)%.%+%-%*%?%[%]%^%$])'
	local banner_name_escaped = banner_name.text
	local page_content = title:getContent() -- get content of current page
	local content_without_shell
	for capture in mw.ustring.gmatch(page_content, '%b{}') do -- look for possible templates on page
		for _, redirect in ipairs(cfg.banner_shell.redirects) do
			if mw.ustring.find(capture, '^{{%s*' .. redirect .. '%s*[|}].*}}$') then -- found a banner shell
				banner_name_escaped = banner_name_escaped:gsub(special_chars, '%%%1') -- escape each special character
				capture = capture:gsub(special_chars, '%%%1')
				content_without_shell = mw.ustring.gsub(page_content, capture, '') -- remove banner shell content from page content
			end
			if content_without_shell then break end
		end
		if content_without_shell then break end
	end
	local template_outside_shell
	if content_without_shell and mw.ustring.find(content_without_shell, '{{%s*' .. banner_name_escaped .. '%s*[|}]') then -- found banner template outside of the shell
		add_category(cfg.banner_shell.category.outside_shell)
	end
else -- no banner shell on page
	if pagetype=='article' then
		add_category(cfg.banner_shell.category.no_banner_shell_articles)
	elseif title.namespace==3 then --User talk namespace
		for _, user in ipairs(cfg.banner_shell.valid_users) do
			if string.find(title.rootText, user) then
				add_category(cfg.banner_shell.category.no_banner_shell)
			end
		end
	else
		add_category(cfg.banner_shell.category.no_banner_shell)
	end
end
---------------------------
-- Quality assessment -----
---------------------------
local assessment_link = args.ASSESSMENT_LINK
if not assessment_link then
	local fallback = mw.title.new(project_link.prefixedText .. '/Assessment')
	assessment_link = fallback.exists and fallback.prefixedText
elseif assessment_link=='no' then
	assessment_link = nil
end
local check_exists = function(class, assessment_cat) -- check if category exists and is not blank
	if not isarticle(class) then
		local cat =  mw.title.new('Category:' .. class .. '-Class' .. ' ' .. assessment_cat)
		return (cat.exists and #cat:getContent()>0) and class or 'NA' -- automatically use NA for non-article pages if category does not exist
	else
		return class
	end
end
local class = raw_args.class
if class then -- banner gives quality ratings
	article_class = article_class and p.class_mask(article_class, title, false, pagetype)
	local show_quality, conflict = true, false
	if args.QUALITY_CRITERIA=='custom' then -- project has opted out of standard assessment scale and uses a custom mask
		local custom_mask = banner_name:subPageTitle('class')
		if custom_mask.exists and #custom_mask:getContent()>1 then
			raw_args.demo_page = demo_page -- send demo_page to custom mask
			class = mw.text.trim(frame:expandTemplate{
				title = custom_mask.prefixedText,
				args = raw_args
			})
			if class=='' and article_class and article_class~='' then -- if unassessed and article class exists, check if it can be inherited
				local new_arg_table = {}
				for arg, val in pairs(raw_args) do -- construct new argument table to send to custom mask
					new_arg_table[arg] = val
				end
				new_arg_table.class = article_class -- replace class with inherited class
				local article_class_normalised = mw.text.trim(frame:expandTemplate{
					title = custom_mask.prefixedText,
					args = new_arg_table
				})
				if article_class_normalised and article_class_normalised~='' then
					class = article_class_normalised -- inherit class from article_class normalised by custom mask
				else
					article_class = nil -- effectively no article_class for this banner
				end
			end
		end
	else
		class = p.class_mask(class, title, true, pagetype)
	end
	if article_class then -- banner shell exists
		if article_class=='' then -- no article class defined
			if class=='' then -- local class also does not exist, check whether any other class parameters are defined inside the shell
				local classparam = p.readarticleclass({ignore_blank=true, only_subtemplates=true}, title.prefixedText)
				if classparam=='' then -- no class parameters defined, display as globally unassessed
					show_quality = false -- hide quality class in project banner
				end
			elseif not demo_page then
				add_category(cfg.banner_shell.category.no_quality_rating)
				warning = warning .. display_error(cfg.banner_shell.piqa_warning)
			end
		elseif class=='' or class==article_class then -- local class matches article class or is blank
			show_quality = false -- hide quality class in project banner
			class = article_class
			if raw_args.class~='' and args.QUALITY_CRITERIA~='custom' then
				add_category(cfg.banner_shell.category.redundant_class)
			end
		elseif (article_class=='NA') and not isarticle(class) then -- article class and local class are both non-article classes
			show_quality = false
		else -- article class exists and differs from local class
			if args.QUALITY_CRITERIA~='custom' then
				conflict = true
				add_category(class .. '-Class' .. ' articles with conflicting quality ratings') --TODO: add to config
			end
		end
	end
	if not isarticle(class) then
		local cat =  mw.title.new(cfg.quality.assessment_category:format(class, assessment_cat))
		if not (cat.exists and #cat:getContent()>0) then --check if category exists and is not blank
			class = 'NA' -- automatically use NA for non-article pages if category does not exist
		end
	end
	local category = (class=='' and 'Unassessed' or class..'-Class') .. ' ' .. assessment_cat
	if show_quality then -- quality rating shown in banner
		local rating
		if pagetype=='article' then
			rating = class=='' and cfg.quality.not_yet or cfg.quality.rated:format(class)
		else
			rating = cfg.quality.not_required
		end
		local scale = args.QUALITY_CRITERIA=='custom'
			and assessment_link
			and cfg.quality.project_scale:format(wikilink(assessment_link..'#'..lang:ucfirst(cfg.quality.name), cfg.quality.name))
			or cfg.quality.default_scale
		local quality_rating = conflict and cfg.banner_shell.conflict.text or cfg.quality.rating:format(pagetype, rating, scale)
		local cssClass = 'class-' .. (class=='' and 'unassessed' or class:lower())
		local class_row =  mw.html.create('tr')
			:tag('td')
				:addClass('assess')
				:addClass(cssClass)
				:wikitext(wikilink(':Category:' .. category, class=='' and '???' or class))
			:done()
			:tag('td')
				:addClass('mbox-text')
				:attr('colspan', '2')
				:wikitext(quality_rating)
			:done()
		table.insert(rows, class_row)
		table.insert(
			nested_ratings,
			1,
			bubble(class=='' and 'Unassessed' or (class..'‑class'), conflict, cssClass)
		)
	end
	add_category(category)
end
if args.HOOK_ASSESS then
	table.insert(rows, args.HOOK_ASSESS)
end
if raw_args.b1 or raw_args.b2 or raw_args.b3 or raw_args.b4 or raw_args.b5 or raw_args.b6 then
	local b_checklist = require(auxiliary).b_checklist(args, raw_args, class, demo_page, assessment_link)
	table.insert(rows, b_checklist)
end
---------------------------
-- Importance assessment --
---------------------------
local importance = importance_mask(raw_args.importance or raw_args.priority, class, args.IMPORTANCE_SCALE, banner_name, pagetype)
local importance_name = args.IMPN or (raw_args.priority and 'priority' or cfg.importance.default_name)
if importance then -- banner gives importance ratings
	local category = importance .. '-' .. importance_name .. ' ' .. assessment_cat
	if importance~='NA' then -- display importance rating
		local rating = importance=='Unknown' and cfg.importance.not_yet or cfg.importance.rated:format(importance, importance_name)
		local scale_name = cfg.importance.scale:format(importance_name)
		local scale = assessment_link
			and cfg.importance.project_scale:format(assessment_link..'#'..lang:ucfirst(scale_name), scale_name)
			or cfg.importance.default_scale
		local importance_rating = cfg.importance.rating:format(pagetype, rating, scale)
		local cssClass = 'import-' .. importance:lower()
		local importance_row =  mw.html.create('tr')
			:tag('td')
				:addClass('assess')
				:addClass(cssClass)
				:wikitext(wikilink(':Category:' .. category, importance=='Unknown' and '???' or importance))
			:done()
			:tag('td')
				:addClass('mbox-text')
				:attr('colspan', '2')
				:wikitext(importance_rating)
			:done()
		table.insert(rows, importance_row)
		if importance~='Unknown' then -- importance is not NA or Unknown
			table.insert(
				nested_ratings,
				bubble(importance .. '‑' .. importance_name, false, cssClass)
			)
		end
	end
	add_category(category)
end
page_assessment(project, class, importance)
if args.HOOK_IMPORTANCE then
	table.insert(rows, args.HOOK_IMPORTANCE)
end
if args.QII_FORMAT then
	add_category(require(auxiliary).quality_importance_insection(args, class, importance, importance_name))
end
---------------------------
-- Collapsing sections ----
---------------------------
local collapse_section = function(collapse, new_rows, header)
	if collapse then
		local header_row = mw.html.create('tr')
			:tag('th')
				:attr('colspan','3')
				:addClass('wpb-collapsed-head')
				:wikitext(header)
			:done()
		local blank_row = mw.html.create('tr')
			:tag('td')
				:addClass('mbox-image wpb-gutter')
				:css('min-width', image_left_size)
				:tag('span')
					:addClass('wpb-iefix')
					:wikitext('/&nbsp;')
					:done() --TO FIX IE
			:done()
			:tag('td'):done()
			:tag('td'):done()
		local collapsed_rows = mw.html.create('table')
			:addClass('mw-collapsible mw-collapsed')
			:node(header_row)
			:node(blank_row)
			for _, row in ipairs(new_rows) do
				collapsed_rows:node(row)
			end
		local collapsed_section = mw.html.create('tr')
			:tag('td')
				:attr('colspan','3')
				:addClass('wpb-collapsed-notes')
				:node(collapsed_rows)
			:done()
		table.insert(rows, collapsed_section)
	else
		for _, row in ipairs(new_rows) do
			table.insert(rows, row)
		end
	end
end
---------------------------
-- Task forces ------------
---------------------------
local nested_tf, taskforce_output = {}, {}
local tf_default_size = args.TF_SIZE or cfg.task_force.default_size
for _, k in ipairs(task_forces) do
	local tf_prefix = 'TF_' .. k .. '_'
	local tf_assessment_cat = args[tf_prefix..'ASSESSMENT_CAT'] or (args[tf_prefix..'NAME'] or '')..' articles'
	local tf_importance
	if raw_args['tf '..k..' importance'] then
		tf_importance = importance_mask(raw_args['tf '..k..' importance'], class, args.IMPORTANCE_SCALE, banner_name, pagetype)
		if tf_importance=='Unknown' and yesno(args.INHERIT_IMPORTANCE) then
			tf_importance = importance
		end
	end
	if args[tf_prefix .. 'TEXT']~='none' then
		local portal = args[tf_prefix..'PORTAL'] and frame:expandTemplate{
			title='Portal',
			args={args[tf_prefix .. 'PORTAL'], height='15', margin='0'}
		} or ''
		local text = ''
		local tf_text = args[tf_prefix..'TEXT'] or args.TF_TEXT
		if tf_text then
			text = portal .. tf_text
				:gsub('_NAME_', args[tf_prefix .. 'NAME'] or '')
				:gsub('_LINK_', args[tf_prefix .. 'LINK'] or '')
				:gsub('_IMPORTANCE_', tf_importance or '')
				:gsub('_PAGETYPE_', pagetype)
		else
			local tf_importance_text = tf_importance
				and tf_importance~='NA'
				and tf_importance~='Unknown'
				and ' ' .. cfg.task_force.importance:format(
					wikilink(':Category:' .. tf_importance .. '-' .. importance_name .. ' ' .. tf_assessment_cat, tf_importance .. '-' .. importance_name)
				) or ''
			text = portal .. cfg.task_force.text:format(
				pagetype,
				wikilink(args[tf_prefix .. 'LINK'], args[tf_prefix .. 'NAME']),
				tf_importance_text
			)
		end
		local tf_size = args[tf_prefix .. 'SIZE'] or tf_default_size
		local tf_image = ''
		if args[tf_prefix .. 'IMAGE'] then
			tf_image = image(args[tf_prefix .. 'IMAGE'], tf_size, cfg.task_force.icon_alt, 'center')
		end
		local taskforce = mw.html.create('tr')
			:tag('td')
				:wikitext(tf_image)
			:done()
			:tag('td')
				:addClass('mbox-text')
				:attr('colspan','2')
				:wikitext(text)
			:done()
		table.insert(taskforce_output, taskforce)
	end
	if args[tf_prefix..'HOOK'] then
		table.insert(taskforce_output, args[tf_prefix..'HOOK'])
	end
	if yesno(args[tf_prefix..'QUALITY']) and class then
		local tf_class = check_exists(class, tf_assessment_cat)
		add_category((tf_class=='' and 'Unassessed' or tf_class..'-Class') .. ' ' .. tf_assessment_cat)
	end
	if tf_importance then
		add_category(tf_importance .. '-' .. importance_name .. ' ' .. tf_assessment_cat)
	end
	if args[tf_prefix..'QII_FORMAT'] then
		add_category(require(auxiliary).quality_importance_insection(args, class, tf_importance, importance_name, tf_prefix))
	end
	if args[tf_prefix..'NAME'] then
		page_assessment(project..'/'..args[tf_prefix..'NAME'], class, tf_importance)
	end
	if args[tf_prefix..'MAIN_CAT'] then
		add_category(args[tf_prefix..'MAIN_CAT'])
	end
	if args[tf_prefix..'NESTED'] then
		table.insert(nested_tf, wikilink(args[tf_prefix..'LINK'], args[tf_prefix..'NESTED']))
	end
	for _, c in ipairs(taskforce_categories[k] or {}) do-- add additional taskforce categories
		add_category(args[tf_prefix..'CAT_'..c])
	end
end
if args.HOOK_TF then
	table.insert(taskforce_output, args.HOOK_TF)
end
local threshold = tonumber(args.TF_COLLAPSE) or (args.TF_HEADER and cfg.task_force.lower_threshold) or cfg.task_force.upper_threshold
collapse_section(
	#taskforce_output > threshold,
	taskforce_output,
	args.TF_HEADER or cfg.task_force.header
)
---------------------------
-- Notes ------------------
---------------------------
local note_output = {}
local note_default_size = args.NOTE_SIZE or args.NOTE_1_SIZE or cfg.note.default_size
local render_note = function(note_args)--text, image_name, size, category, sort_prefix
	local sort = note_args.sort_prefix and note_args.sort_prefix .. current_title.text
	add_category(note_args.category, sort)
	add_category(note_args.category2, sort)
	if note_args.text then
		local note_image = image(note_args.image_name, note_args.size or note_default_size, cfg.note.icon_alt, 'center')
		local new_note = mw.html.create('tr')
			:tag('td')
				:css('background', note_args.background)
				:wikitext(note_image)
			:done()
			:tag('td')
				:addClass('mbox-text')
				:attr('colspan', '2')
				:wikitext(note_args.text)
			:done()
		table.insert(note_output, new_note)
		if note_image then
			local icon = mw.html.create('span')
				:addClass('wpb-header-bubbles')
				:wikitext('[[File:' .. note_args.image_name .. '|' .. cfg.note.header_icon .. '|' .. note_args.text .. '|link=|alt=]]')
			table.insert(nested_ratings, tostring(icon))
		end
	end
end
local auto = false
local auto_arg = args.auto and args.auto:lower()
if (auto_arg=='yes' or auto_arg=='stub') and class=='Stub' then
	auto = 'stub'
elseif (auto_arg=='inherit' or auto_arg=='length') and class and class~='' then
	auto = auto_arg
end
if auto then
	local auto_cat = args.AUTO_ASSESS_CAT or cfg.auto.default_cat:format(project)
	local auto_text = cfg.auto.assessed:format(
		pagetype,
		cfg.auto[auto], -- method of automatic assessment
		parameter_format('auto')
	)
	local sort_prefix
	if auto=='stub' then
		sort_prefix = 'S'
	elseif auto=='length' then
		sort_prefix = 'L'
	elseif auto=='inherit' then
		local sort_codes = cfg.auto.sort_codes
		sort_prefix = sort_codes[class] or cfg.auto.default_sort_code
	end
	render_note{
		text = auto_text,
		image_name =  cfg.auto.icon,
		category = auto_cat,
		sort_prefix = sort_prefix
	}
end
if yesno(args.attention, true) then
	local attention_cat = args.ATTENTION_CAT or cfg.attention.default_cat:format(project)
	render_note{
		text = cfg.attention.text:format(pagetype),
		image_name = cfg.attention.icon,
		category = attention_cat
	}
end
if yesno(args.infobox, true) then
	local infobox_cat = args.INFOBOX_CAT or cfg.infobox.default_cat:format(project)
	render_note{
		text = cfg.infobox.text:format(pagetype),
		image_name = cfg.infobox.icon,
		category = infobox_cat
	}
end
for _, k in ipairs(notes) do
	local note_prefix = 'NOTE_' .. k .. '_'
	render_note{
		text = parse_text(args[note_prefix..'TEXT']),
		image_name = args[note_prefix..'IMAGE'],
		size = args[note_prefix..'SIZE'],
		category = args[note_prefix..'CAT']
	}
end
if yesno(args['image-needed'], true) then
	local image_needed_args = require(auxiliary).image_needed(args, pagetype)
	render_note(image_needed_args)
end
if yesno(args['collaboration-candidate'], true) or yesno(args['collaboration-current'], true) or yesno(args['collaboration-past'], true) then
	local collaboration_args = require(auxiliary).collaboration(args, pagetype, current_title)
	render_note(collaboration_args.candidate)
	render_note(collaboration_args.current)
	render_note(collaboration_args.past)
end
if yesno(args['a class'], true) then
	local a_class_args = require(auxiliary).a_class(args, lang)
	render_note(a_class_args)
end
if yesno(args['peer review'], true) or yesno(args['old peer review'], true) then
	local peer_review_args = require(auxiliary).peer_review(args, current_title)
	render_note(peer_review_args.current)
	render_note(peer_review_args.past)
end

local note_count = #note_output
if args.HOOK_NOTE then
	table.insert(note_output, args.HOOK_NOTE)
	local hook_collapsed = 0
	if args.HOOK_COLLAPSED then
		local success, result = pcall(mw.ext.ParserFunctions.expr, args.HOOK_COLLAPSED)
		hook_collapsed = success and tonumber(result) or 0
		if args.HOOK_COLLAPSED=='auto' then
			hook_collapsed = 1
		end
	end
	note_count = note_count + hook_collapsed
end
collapse_section(
	note_count > (tonumber(args.COLLAPSED) or cfg.note.threshold),
	note_output,
	args.COLLAPSED_HEAD or cfg.note.header
)
---------------------------
-- Bottom text ------------
---------------------------
if args.HOOK_BOTTOM then
	table.insert(rows, args.HOOK_BOTTOM)
end
if args.TODO_LINK or args.TODO_TEXT then
	local todolist = require(auxiliary).todo_list(args, frame)
	table.insert(rows, todolist)
end
if args.BOTTOM_TEXT then
	local bottom_text = mw.html.create('tr')
		:tag('td')
			:attr('colspan','3')
			:wikitext(parse_text(args.BOTTOM_TEXT))
		:done()
	table.insert(rows, bottom_text)
end
if args.MAIN_CAT then
	add_category(args.MAIN_CAT)
end
---------------------------
-- Nested display ---------
---------------------------
if args.HOOK_NESTED then
	local hook_nested = args.HOOK_NESTED:gsub('^&#32;/ ', '') -- remove initial slash, will be added later
	table.insert(nested_tf, hook_nested)
end
local nested_tf_str = ''
if #nested_tf>0 then
	nested_tf_str = tostring(mw.html.create('span')
		:addClass('wpb-nested-task-force')
		:wikitext(': ' .. table.concat(nested_tf, ' / '))
	)
end
local nested_ratings_str = #nested_ratings>0 and table.concat(nested_ratings, ' ') or ''
if args.HOOK_NESTED_ASSESS then
	nested_ratings_str = nested_ratings_str .. tostring(mw.html.create('span')
		:addClass('wpb-header-bubbles')
		:wikitext(args.HOOK_NESTED_ASSESS)
	)
end
local header_row = mw.html.create('tr')
	:addClass('wpb-header')
	:tag('td')
		:addClass('wpb-header-icon')
		:wikitext(image(args.IMAGE_LEFT, cfg.image.header_size, cfg.image.alt))
		:done()
	:tag('td')
		:addClass('wpb-header-combined')
		:wikitext(wikilink(project_link.prefixedText, project) .. nested_tf_str .. '  ' .. nested_ratings_str)
		:done()
---------------------------
-- Default sort -----------
---------------------------
if args.listas then
	frame:preprocess('{{DEFAULTSORT:' .. args.listas .. '}}')
	if title.namespace~=3 then -- exclude user talk namespace
		local success, shell_listas_value = require('Module:Template parameter value').getParameter(
			title.prefixedText,
			cfg.banner_shell.redirects,
			'listas',
			{ignore_subtemplates = true, ignore_blank = true}
		)
		if success and shell_listas_value~='' then
			if args.listas==shell_listas_value then-- same value in both (with spacing trimming)
				add_category('WikiProject banners with redundant listas value')
			end
		else-- listas is blank or not defined in banner shell
			add_category('WikiProject banners with listas value which needs moving to banner shell')
		end
	end
end
---------------------------
-- Prepare categories -----
---------------------------
local categories_formatted = ''
if demo_page and demo_page~=true then -- for testing purposes
	local category_list = mw.html.create('ul')
	for _, cat in ipairs(categories) do
		local item = mw.html.create('li')
			:wikitext(wikilink(':Category:' .. cat.category, cat.category))
		category_list:node(item)
	end
	local category_box = mw.html.create('div')
		:addClass('wpb-category-box')
		:wikitext('Categories:')
		:node(category_list)
	categories_formatted = tostring(category_box)
elseif not demo_page then
	local categories_linked = {}
	for _, cat in ipairs(categories) do
		local cat_link = wikilink('Category:' .. cat.category, cat.key)
		table.insert(categories_linked, cat_link)
	end
	categories_formatted = table.concat(categories_linked)
end
---------------------------
-- Make banner ------------
---------------------------
local banner_rows = mw.html.create('table')
for _, row in ipairs(rows) do
	banner_rows:node(row)
end
local banner = mw.html.create('table')
	:addClass('tmbox tmbox-notice mw-collapsible innercollapse wpb wpb-table')
	:addClass(inactive and cfg.status.inactive_class or nil)
	:node(header_row)
	:tag('tr')
		:tag('td')
			:addClass('mbox-text wpb-main')
			:attr('colspan','2')
			:node(banner_rows)
	:allDone()
local tstyle = frame:extensionTag('templatestyles', '', {src='Module:Message box/tmbox.css'}) ..
	frame:extensionTag ('templatestyles', '', {src = 'Module:WikiProject banner' .. (sandbox or '') .. '/styles.css'})
return warning .. tstyle .. tostring(banner) .. categories_formatted, note_count, #taskforce_output, assessment_link
end

local initialise = function(args, raw_args, inactive_status)
---------------------------
-- Initialise arguments ---
---------------------------
local parent_args = args_module.getArgs(frame, {parentOnly = true})
local category = parent_args.category or args.category or true
local demo_page = parent_args.demo_page
local on_template_page = false
local banner_name = mw.title.new(args.BANNER_NAME or 'Template:WikiProject ' .. (args.PROJECT or 'PROJECT'))
if not demo_page then
	if yesno(category, true) then
		on_template_page = current_title.rootPageTitle==banner_name.rootPageTitle
	else
		demo_page = true
	end
end
local project_name = args.PROJECT_NAME or 'WikiProject ' .. (args.PROJECT or 'PROJECT')
local unknown_parameters = ''
if banner_name.exists and not demo_page then -- check for unknown parameters
	local parameters = {}
	for parameter in banner_name:getContent():gmatch('{{{([^|}]+)') do
		table.insert(parameters, parameter)
	end
	local check_for_unknown = require('Module:Check for unknown parameters')._check
	local unknowns = check_for_unknown(parameters, parent_args)
	if unknowns and unknowns~='' then-- there are some unknown parameters
		parameters.preview = cfg.unknown_parameters.preview:format(wikilink(banner_name.fullText))
		local unknown_category = cfg.unknown_parameters.tracking:format(project_name)
		if not mw.title.new(unknown_category).exists then
			unknown_category = cfg.unknown_parameters.default
		end
		parameters.unknown = unknown_category and '[[' .. unknown_category .. '|_VALUE_]]' or ''
		unknown_parameters = check_for_unknown(parameters, parent_args)
	end
end
if on_template_page then
	local templatepage = require('Module:WikiProject banner/templatepage' .. (sandbox or '')).templatepage
	return templatepage(args, raw_args, inactive_status)
else
	return unknown_parameters
		.. p._main(args, raw_args, demo_page, banner_name, inactive_status and true or false), nil -- nil to disregard subsequent returned values
end
end

p.main = function(frame)
	local args = args_module.getArgs(frame, {frameOnly = true})
	local raw_args = args_module.getArgs(frame, {frameOnly = true, removeBlanks = false})
	return initialise(args, raw_args)
end
---------------------------
-- Inactive projects ------
---------------------------
p.inactive = function(frame)
	local args = args_module.getArgs(frame, {frameOnly = true})
	local project_name = args.PROJECT_NAME or 'WikiProject ' .. (args.PROJECT or 'PROJECT')
	local project_link = mw.title.new(args.PROJECT_LINK or 'Wikipedia:' .. project_name)
	local _status = cfg.status[args.PROJECT_STATUS] or cfg.status.default_inactive
	local main_text = cfg.inactive.text:format(
		'_PAGETYPE_',
		project_link.prefixedText,
		project_name,
		_status
	)
	return initialise(
		{
			PROJECT = args.PROJECT,
			BANNER_NAME = args.BANNER_NAME,
			IMAGE_LEFT = cfg.inactive.image,
			IMAGE_LEFT_SIZE = cfg.inactive.image_size,
			MAIN_TEXT = main_text,
			HOOK_NESTED_ASSESS = ' ' .. cfg.inactive.nested:format(_status),
			substcheck = args.substcheck,
			category = args.category
		}, {
			substcheck = '' -- to prevent warning on templatepage
		}, _status
	)
end

return p