-- -- This module will implement {{#invoke: Navbox | navbox }} --

local p = {}

local HtmlBuilder = require('Module:HtmlBuilder') local Navbar = require('Module:Navbar')

local args local frame local tableRowAdded = false local border local listnums = {}

function trim(s)

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

end

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')
   end
   
   tableRowAdded = true
   
   return tbl.tag('tr')

end

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

   if not args.title then return end

   local titleRow = addTableRow(tbl)
    
   if args.titlegroup then
       titleRow
           .tag('th')
               .attr('scope', 'row')
               .addClass('navbox-group')
               .addClass(args.titlegroupclass)
               .cssText(args.basestyle)
               .cssText(args.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 args.image then titleColspan = titleColspan + 1 end
   if args.titlegroup then titleColspan = titleColspan - 1 end
   
   titleCell
       .cssText(args.basestyle)
       .cssText(args.titlestyle)
       .addClass('navbox-title')
       .attr('colspan', titleColspan)

    renderNavBar(titleCell)

    titleCell
        .tag('div')
            .addClass(args.titleclass)
            .css('font-size', '110%')
            .newline()
            .wikitext(args.title)

end

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 args.navbar == 'off' or (not args.name and (border == 'subgroup' or border == 'child' or border == 'none')) 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.navbar({ 
           args.name, 
           mini = 1, 
           fontstyle = (args.basestyle or ) .. ';' .. (args.titlestyle or ) ..  ';background:none transparent;border:none;'
       }))
   end
   
   -- Render the spacer div.
   if spacerSide then
       titleCell
           .tag('span')
               .css('float', spacerSide)
               .css('width', '6em')
               .wikitext(' ')
   end

end

-- -- Above/Below rows -- function renderAboveRow(tbl)

   if not args.above then return end

   addTableRow(tbl)
       .tag('td')
           .addClass('navbox-abovebelow')
           .addClass(args.aboveclass)
           .cssText(args.basestyle)
           .cssText(args.abovestyle)
           .attr('colspan', getAboveBelowColspan())
           .tag('div')
               .newline()
               .wikitext(args.above)

end

function renderBelowRow(tbl)

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

end

function getAboveBelowColspan()

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

end

-- -- List rows -- 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')
                   .newline()
                   .wikitext(args.imageleft)
   end

   if args['group' .. listnum] then
       local groupCell = row.tag('th')
       
       groupCell
              .attr('scope', 'row')
              .addClass('navbox-group')
              .addClass(args.groupclass)
              .cssText(args.basestyle)
              
       if args.groupwidth then
           groupCell.css('width', args.groupwidth)
       end
          
       groupCell
           .cssText(args.groupstyle)
           .cssText(args['group' .. listnum .. 'style'])
           .wikitext(args['group' .. listnum])
   end
   
   local listCell = row.tag('td')

   if args['group' .. 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 = args.evenstyle
   if isOdd then rowstyle = args.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(args.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')
           .newline()
           .wikitext(args['list' .. listnum])

   if listnum == 1 and args.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')
                   .newline()
                   .wikitext(args.image)
   end

end

-- -- Tracking categories -- function renderTrackingCategories(builder)

   local frame = mw.getCurrentFrame()
   
   if not frame then return end
   
   local s = frame:preprocess('0Module:Navbox')
   if mw.ustring.sub(s, 1, 1) == '0' then return end -- not in template space
   local subpage = mw.ustring.lower(mw.ustring.sub(s, 2))
   if subpage == 'doc' or subpage == 'sandbox' or subpage == 'testcases' then return end
   
   for i, cat in ipairs(getTrackingCategories()) do
       builder.wikitext() 
   end

end

function getTrackingCategories()

   local cats = {}
   if needsHorizontalLists() then table.insert(cats, 'Navigational boxes without horizontal lists') end
   if hasCustomListSpacing() then table.insert(cats, 'Navigational boxes with custom list spacing') end
   if hasBackgroundColors() then table.insert(cats, 'Navboxes using background colours') end
   return cats

end

function needsHorizontalLists()

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

   return true

end

function hasCustomListSpacing()

   return args.liststyle == 'padding: 0.25em 0; line-height: 1.3em;' or 
          args.liststyle == 'padding:0.25em 0; line-height:1.4em; width:auto;' or 
          args.liststyle == 'padding:0.4em 0; line-height:1.4em;'

end

function hasBackgroundColors()

   return args.titlestyle or args.groupstyle

end

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

   local tbl = HtmlBuilder.create('table')
       .attr('cellspacing', 0)
       .addClass('nowraplinks')
       .addClass(args.bodyclass)
            
   if args.title 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(args.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+)$')
       if listnum then table.insert(listnums, tonumber(listnum)) end
   end
   table.sort(listnums)

   border = trim(args.border or args[1] or )

   -- render the main body of the navbox
   local tbl = renderMainTable()

   -- render the appropriate wrapper around the navbox, depending on the border param
   local res = HtmlBuilder.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 </div> to avoid the

       res
           .tag('/div', {unclosed = true})
               .done()
           .node(tbl)
           .tag('div', {unclosed = true})
   else
       res
           .tag('table')
               .attr('cellspacing', 0)
               .addClass('navbox')
               .css('border-spacing', 0)
               .cssText(args.bodystyle)
               .cssText(args.style)
               .tag('tr')
                   .tag('td')
                       .css('padding', '2px')
                       .node(tbl)
   end

   renderTrackingCategories(res)

   return tostring(res)

end

function p.navbox(frame)

   -- ParserFunctions considers the empty string to be false, so to preserve the previous 
   -- behavior of {{#invoke: Navbox | navbox }}, change any empty arguments to nil, so Lua will consider
   -- them false too.
   local args = {}
   local parent_args = frame:getParent().args;

   -- Out of order parsing bug.
   local temp;
   temp = parent_args.title;
   temp = parent_args.above;
   for i = 1, 20 do
       temp = parent_args["group" .. tostring(i)];
       temp = parent_args["list" .. tostring(i)];
   end    
   temp = parent_args.below;
   
   for k, v in pairs(parent_args) do
       if v ~=  then
           args[k] = v
       end
   end
   return p._navbox(args)

end

return p