DECK = Deck.new();

function config(x)
  for k,v in pairs(x) do
    DECK:addConfig(k, v);
  end
end

function slide(x)
  local s = Slide.new()

  for k, v in pairs(x) do
    if type(k) == "string" then
      s:addConfig(k, v)
    else
      s:addNode(v)
    end
  end

  DECK:addSlide(s)
end

function makeNode(ntype, ncontent)
  local n = Node.new(ntype)

  -- handle plain strings
  if type(ncontent) == "string" then
    n:addText(ncontent)
    return n
  end

  -- handle more advanced config ones
  for k,v in pairs(ncontent) do
    if type(k) == "string" then
      n:addConfig(k, v)
    else
      n:addText(v)
    end
  end

  return n
end

function t(content)
  return makeNode(NodeType.TEXT, content)
end

function h1(text)
  return makeNode(NodeType.H1, content)
end

function image(settings)
  return makeNode(NodeType.IMAGE, content)
end

function ul(text)
  return makeNode(NodeType.UL, content)
end

function pprint(o)
  if type(o) == 'table' then
    local s = '{'
    for k,v in pairs(o) do
      if type(k) == 'number' then
        s = s .. pprint(v) .. ','
      elseif type(k) == 'string' then
        s = s .. '"' .. k .. '"=' .. pprint(v) .. ','
      else
        s = s .. '[' .. k .. ']=' .. pprint(v) .. ','
      end
    end
    return s .. '}\n'
  elseif type(o) == 'string' then
    return '"' .. o .. '"'
  else
    return tostring(o)
  end
end