class Lutaml::Model::XmlAdapter::OgaAdapter

def self.parse(xml)
  parsed = Oga.parse_xml(xml)
  root = OgaElement.new(parsed)
  new(root)
end

def build_attributes(attributes)
  attributes.transform_values(&:value)
end

def build_element(builder, element, options = {})
  attributes = build_attributes(element.attributes)
  builder.element(element.name, attributes) do
    element.children.each do |child|
      build_element(builder, child, options)
    end
    builder.text(element.text) if element.text
  end
end

def parse_element(element)
  result = { "_text" => element.text }
  element.children.each do |child|
    next if child.is_a?(Oga::XML::Text)
    result[child.name] ||= []
    result[child.name] << parse_element(child)
  end
  result
end

def to_h
  { @root.name => parse_element(@root) }
end

def to_xml(options = {})
  builder = Oga::XML::Builder.new
  build_element(builder, @root, options)
  xml_data = builder.to_xml
  options[:declaration] ? declaration(options) + xml_data : xml_data
end