local appendixcount = 0
local app = {}
local kAriaExpanded = "aria-expanded"
local refhyperlinks = true
-- Word for appendix
local appendixword = "Appendix"

local journalmode = false
local documentmode = "man"

getappendixword = function(meta)
  if meta.language and meta.language["crossref-apx-prefix"] then
    appendixword = pandoc.utils.stringify(meta.language["crossref-apx-prefix"])
  end
  if FORMAT == "latex" then
    if meta.documentmode then
       documentmode = pandoc.utils.stringify(meta["documentmode"])
    end
    journalmode = documentmode == "jou"
  end
end

local function cite_appendix(ct)
  local floatreftext

  --Is the citation a reference to a section?
  if #ct.citations == 1 and (string.find(ct.citations[1].id, "^sec%-") or string.find(ct.citations[1].id, "^apx%-")) and app[ct.citations[1].id] then
    -- Text for section reference
    if appendixcount == 1 then
      floatreftext = pandoc.Inlines({ pandoc.Str(appendixword) })
    else
      floatreftext = pandoc.Inlines({ pandoc.Str(appendixword), pandoc.Str('\u{a0}'), pandoc.Str(app[ct.citations[1].id]) })
    end



    if floatreftext == nil then
      quarto.log.warning("Cannot find @" .. ct.citations[1].id)
      return floatreftext
    end
    if refhyperlinks then
      -- create link
      local reflink = pandoc.Link(floatreftext, "#" .. ct.citations[1].id)
      reflink.classes = { "quarto-xref" }
      reflink.attributes[kAriaExpanded] = "false"
      return reflink
    else
      return floatreftext
    end
  end
end

local function getappendix(h)
  if h.attr.attributes.appendixtitle then
    app[h.identifier] = h.attr.attributes.appendixtitle
    appendixcount = appendixcount + 1
    if FORMAT == "latex" then
      if journalmode then
        local p = pandoc.RawBlock("latex", "\\setlength{\\parindent}{1em}")
        return { h, p }
      end
    end
  end
end


return {
  { Meta = getappendixword },
  { Header = getappendix },
  { Cite = cite_appendix }
}