Modul:Brittiskt regeringsår

-- Den här modulen implementerar N/A. Den konverterar gregorianska år -- till motsvarande engelska eller brittiska regeringsår.

local data = mw.loadData( 'Modul:Brittiskt regeringsår/Data' )

local p = {}

function p.konvertering( frame )

   local inputYear
   if frame == mw.getCurrentFrame() then
       inputYear = frame:getParent().args[ 1 ]
       local frameArgsYear = frame.args[ 1 ]
       if frameArgsYear then
           inputYear = frameArgsYear
       end
   else
       inputYear = frame
   end

   if type( inputYear ) ~= 'number' then
       inputYear = tonumber( inputYear )
   end
   if not inputYear then
       return "N/A"
   end
   local currentYear = tonumber( mw.language.getContentLanguage():formatDate( 'Y' ) )
   if inputYear < 1066 or inputYear > currentYear then
       return "N/A"
   end

   for _, t in ipairs( data ) do
       local dataYear = t.year
       if inputYear >= dataYear then
           local startYear = t.startYear
           local currentRegnalYear = inputYear - dataYear + startYear
           local linkCurrent = t.linkCurrent
           local prevEndYear = t.prevEndYear
           local linkPrev = t.linkPrev
           local note = t.note

           if inputYear > dataYear then
               return mw.ustring.format(
                   '%d %s – %d %s%s',
                   currentRegnalYear - 1, linkCurrent, currentRegnalYear, linkCurrent, note or 
               )
           elseif inputYear == dataYear and prevEndYear and linkPrev then
               return mw.ustring.format(
                   '%d %s – %d %s%s',
                   prevEndYear, linkPrev, currentRegnalYear, linkCurrent, note or 
               )
           else
               return mw.ustring.format(
                   '%d %s%s',
                   currentRegnalYear, linkCurrent, note or 
               )
           end
       end
   end

end

return p