--

-- This module implements

--

local p = {}

local navbar = require('Module:Navbar')._navbar local getArgs -- lazily initialized

local args local tableRowAdded = false local border

local maintitle local name local above local image local below local titlestyle local groupstyle local bodystyle local basestyle local liststyle local oddstyle local evenstyle local abovestyle local belowstyle

local listnums = {}

local function trim(s)

   return (mw.ustring.gsub(s, "^%s*(.-)%s*$", "%1"))

end

local function addNewline(s)

   if s:match('^[*:;#]') or s:match('^{|') then
       return '\n' .. s ..'\n'
   else
       return s
   end

end

local function addTableRow(tbl)

   -- If any other rows have already been added, then we add a 2px gutter row.
   if tableRowAdded then
       tbl
           :tag('tr')
               :css('height', '2px')
               :tag('td')
                   :attr('colspan',2)
   end
   tableRowAdded = true
   return tbl:tag('tr')

end

local function renderNavBar(titleCell)

   -- Depending on the presence of the navbar and/or show/hide link, we may need to add a spacer div on the left
   -- or right to keep the title centered.
   local spacerSide = nil
   if args.navbar == 'off' then
       -- No navbar, and client wants no spacer, i.e. wants the title to be shifted to the left. If there's
       -- also no show/hide link, then we need a spacer on the right to achieve the left shift.
       if args.state == 'plain' then spacerSide = 'right' end
   elseif args.navbar == 'plain' or (not args.name and mw.getCurrentFrame():getParent():getTitle():gsub('/sandbox$', ) == 'Шаблон:Навигационная таблица/Тестовый') then
       -- No navbar. Need a spacer on the left to balance out the width of the show/hide link.
       if args.state ~= 'plain' then spacerSide = 'left' end
   else
       -- Will render navbar (or error message). If there's no show/hide link, need a spacer on the right
       -- to balance out the width of the navbar.
       if args.state == 'plain' then spacerSide = 'right' end
       titleCell:wikitext(navbar{
           name,
           mini = 1,
           fontstyle = (basestyle or ) .. ';' .. (titlestyle or ) ..  ';background:none transparent;border:none;'
       })
   end
   -- Render the spacer div.
   if spacerSide then
       titleCell
           :tag('span')
               :css('float', spacerSide)
               :css('width', '3em')
               :wikitext(' ')
   end

end

-- -- Title row -- local function renderTitleRow(tbl)

   if not maintitle then return end
   local titleRow = addTableRow(tbl)
   if args.titlegroup then
       titleRow
           :tag('th')
               :attr('scope', 'row')
               :addClass('navbox-group')
               :addClass(args.titlegroupclass)
               :cssText(basestyle)
               :cssText(groupstyle)
               :cssText(args.titlegroupstyle)
               :wikitext(args.titlegroup)
   end
   local titleCell = titleRow:tag('th'):attr('scope', 'col')
   if args.titlegroup then
       titleCell
           :css('border-left', '2px solid #fdfdfd')
           :css('width', '100%')
   end
   local titleColspan = 2
   if args.imageleft then titleColspan = titleColspan + 1 end
   if image then titleColspan = titleColspan + 1 end
   if args.titlegroup then titleColspan = titleColspan - 1 end
   titleCell
       :cssText(basestyle)
       :cssText(titlestyle)
       :addClass('navbox-title')
       :attr('colspan', titleColspan)
   renderNavBar(titleCell)
   titleCell
        :tag('div')
            :addClass(args.titleclass)
            :css('font-size', '114%')
            :wikitext(addNewline(maintitle))

end

-- -- Above/Below rows --

local function getAboveBelowColspan()

   local ret = 2
   if args.imageleft then ret = ret + 1 end
   if image then ret = ret + 1 end
   return ret

end

local function renderAboveRow(tbl)

   if not above then return end
   addTableRow(tbl)
       :tag('td')
           :addClass('navbox-abovebelow')
           :addClass(args.aboveclass)
           :cssText(basestyle)
           :cssText(abovestyle)
           :attr('colspan', getAboveBelowColspan())
           :tag('div')
               :wikitext(addNewline(above))

end

local function renderBelowRow(tbl)

   if not below then return end
   addTableRow(tbl)
       :tag('td')
           :addClass('navbox-abovebelow')
           :addClass(args.belowclass)
           :cssText(basestyle)
           :cssText(belowstyle)
           :attr('colspan', getAboveBelowColspan())
           :tag('div')
               :wikitext(addNewline(below))

end

-- -- List rows -- local function renderListRow(tbl, listnum)

   local row = addTableRow(tbl)
   if listnum == 1 and args.imageleft then
       row
           :tag('td')
               :addClass('navbox-image')
               :addClass(args.imageclass)
               :css('width', '0%')
               :css('padding', '0px 2px 0px 0px')
               :cssText(args.imageleftstyle)
               :attr('rowspan', 2 * #listnums - 1)
               :tag('div')
                   :wikitext(addNewline(args.imageleft))
   end
   if (args['group' .. listnum] or args['заголовок' .. listnum]) then
   	local groupCell = row:tag('th')
       groupCell
           :attr('scope', 'row')
           :addClass('navbox-group')
           :addClass(args.groupclass)
           :cssText(basestyle)
         
       if args.groupwidth then
           groupCell:css('width', args.groupwidth)
       end
       groupCell
           :cssText(groupstyle)
           :cssText(args['group' .. listnum .. 'style'])
           :wikitext(args['group' .. listnum] or args['заголовок' .. listnum])
   end
   local listCell = row:tag('td')
   if (args['group' .. listnum] or args['заголовок' .. listnum]) then
       listCell
           :css('text-align', 'left')
           :css('border-left-width', '2px')
           :css('border-left-style', 'solid')
   else
       listCell:attr('colspan', 2)
   end
   if not args.groupwidth then
       listCell:css('width', '100%')
   end
   local isOdd = (listnum % 2) == 1
   local rowstyle = evenstyle
   if isOdd then rowstyle = oddstyle end
   local evenOdd
   if args.evenodd == 'swap' then
       if isOdd then evenOdd = 'even' else evenOdd = 'odd' end
   else
       if isOdd then evenOdd = args.evenodd or 'odd' else evenOdd = args.evenodd or 'even' end
   end
   listCell
       :css('padding', '0px')
       :cssText(liststyle)
       :cssText(rowstyle)
       :cssText(args['list' .. listnum .. 'style'])
       :addClass('navbox-list')
       :addClass('navbox-' .. evenOdd)
       :addClass(args.listclass)
       :tag('div')
           :css('padding', (listnum == 1 and args.list1padding) or args.listpadding or '0em 0.25em')
           :wikitext(addNewline(args['list' .. listnum] or args['список' .. listnum]))
   if listnum == 1 and image then
       row
           :tag('td')
               :addClass('navbox-image')
               :addClass(args.imageclass)
               :css('width', '0%')
               :css('padding', '0px 0px 0px 2px')
               :cssText(args.imagestyle)
               :attr('rowspan', 2 * #listnums - 1)
               :tag('div')
                   :wikitext(addNewline(image))
   end

end


-- -- Tracking categories --

local function needsHorizontalLists()

   if border == 'child' or border == 'subgroup'  or args.tracking == 'no' then return false end
   local listClasses = {'plainlist', 'hlist', 'hlist hnum', 'hlist hwrap', 'hlist vcard', 'vcard hlist', 'hlist vevent'}
   for i, cls in ipairs(listClasses) do
       if args.listclass == cls or args.bodyclass == cls then
           return false
       end
   end
   return true

end

local function hasBackgroundColors()

   return mw.ustring.match(titlestyle or ,'background') or mw.ustring.match(groupstyle or ,'background') or mw.ustring.match(basestyle or ,'background')

end

local function isIllegible()

   local styleratio = require('Module:Color contrast')._styleratio
   for key, style in pairs(args) do
       if tostring(key):match("style$") then
           if styleratio{mw.text.unstripNoWiki(style)} < 4.5 then
               return true 
           end
       end
   end
   return false

end

local function getTrackingCategories()

   local cats = {}
   if needsHorizontalLists() then table.insert(cats, 'Навигационные таблицы без горизонтальных списков') end
   if hasBackgroundColors() then table.insert(cats, 'Навигационные таблицы, использующие фоновые цвета') end
   if isIllegible() then table.insert(cats, 'Потенциально нечитаемые навигационные блоки') end
   return cats

end

local function renderTrackingCategories(builder)

   local title = mw.title.getCurrentTitle()
   if title.namespace ~= 10 then return end -- not in template space
   local subpage = title.subpageText
   if subpage == 'doc' or subpage == 'sandbox' or subpage == 'testcases' then return end
   for i, cat in ipairs(getTrackingCategories()) do
       builder:wikitext()
   end

end

-- -- Main navbox tables -- local function renderMainTable()

   local tbl = mw.html.create('table')
       :addClass('nowraplinks')
       :addClass(args.bodyclass)
   if maintitle and (args.state ~= 'plain' and args.state ~= 'off') then
       tbl
           :addClass('collapsible')
           :addClass(args.state or 'autocollapse')
   end
   tbl:css('border-spacing', 0)
   if border == 'subgroup' or border == 'child' or border == 'none' then
       tbl
           :addClass('navbox-subgroup')
           :cssText(bodystyle)
           :cssText(args.style)
   else -- regular navobx - bodystyle and style will be applied to the wrapper table
       tbl
           :addClass('navbox-inner')
           :css('background', 'transparent')
           :css('color', 'inherit')
   end
   tbl:cssText(args.innerstyle)
   renderTitleRow(tbl)
   renderAboveRow(tbl)
   for i, listnum in ipairs(listnums) do
       renderListRow(tbl, listnum)
   end
   renderBelowRow(tbl)
   return tbl

end

function p._navbox(navboxArgs)

   args = navboxArgs
   for k, v in pairs(args) do
       local listnum = ( .. k):match('^list(%d+)$') or ( .. k):match('^список(%d+)$')
       if listnum then table.insert(listnums, tonumber(listnum)) end
   end
   table.sort(listnums)
   border = trim(args.border or args[1] or )
   maintitle = args.title or args['заголовок']

name = args.name or args['имя'] above = args.above or args['вверху'] image = args.image or args['изображение'] below = args.below or args['внизу'] titlestyle = args.titlestyle or args['стиль_основного_заголовка'] groupstyle = args.groupstyle or args['стиль_заголовков'] bodystyle = args.bodystyle or args['стиль_тела'] basestyle = args.basestyle or args['стиль'] liststyle = args.liststyle or args['стиль_списков'] oddstyle = args.oddstyle or args['стиль_нечетных'] evenstyle = args.evenstyle or args['стиль_четных'] abovestyle = args.abovestyle or args['стиль_вверху'] belowstyle = args.belowstyle or args['стиль_внизу']

   -- render the main body of the navbox
   local tbl = renderMainTable()
   -- render the appropriate wrapper around the navbox, depending on the border param
   local res = mw.html.create()
   if border == 'none' then
       res:node(tbl)
   elseif border == 'subgroup' or border == 'child' then
       -- We assume that this navbox is being rendered in a list cell of a parent navbox, and is

-- therefore inside a div with padding:0em 0.25em. We start with a to avoid the -- padding being applied, and at the end add a

to balance out the parent's
       res

:wikitext('') -- XXX: hack due to lack of unclosed support in mw.html.

           :node(tbl)

:wikitext('

') -- XXX: hack due to lack of unclosed support in mw.html.
   else
       res
           :tag('table')
               :addClass('navbox')
               :css('border-spacing', 0)
               :cssText(bodystyle)
               :cssText(args.style)
               :tag('tr')
                   :tag('td')
                       :css('padding', '2px')
                       :node(tbl)
   end
   renderTrackingCategories(res)
   return tostring(res)

end

function p.navbox(frame)

   if not getArgs then
       getArgs = require('Module:Arguments').getArgs
   end
   args = getArgs(frame, {wrappers = 'Шаблон:Навигационная таблица/Тестовый'})
   -- Read the arguments in the order they'll be output in, to make references number in the right order.
   local _
   _ = maintitle
   _ = above
   for i = 1, 20 do
       _ = args["group" .. tostring(i)] and args["заголовок" .. tostring(i)]
       _ = args["list" .. tostring(i)] and args["список" .. tostring(i)]
   end
   _ = below
   return p._navbox(args)

end

return p