import gleam/dict
import gleam/string_tree
import simplejson/jsonvalue
import xmb
import xmljson/internal/json as bjson
import xmljson/internal/xml as bxml
import xmlm

/// Parse an XML string into a JSON object.
pub fn to_json(input: String) -> jsonvalue.JsonValue {
  let input =
    input
    |> xmlm.from_string
    |> xmlm.with_stripping(True)
  // Skip the first element for now, we do not take into account the DTD
  let assert Ok(#(xmlm.Dtd(_), input)) = xmlm.signal(input)
  let #(lst, _) = bxml.parse_xml(input, [], [], dict.new())
  jsonvalue.JsonObject(bxml.dict_from_list(lst))
}

/// Parse an JSON object into an xml fragment.
pub fn to_xml_fragment(input: jsonvalue.JsonValue) -> String {
  let assert [x] = bjson.parse(input)
  xmb.render_fragment(x) |> string_tree.to_string
}

/// Parse an JSON object into an xml string.
pub fn to_xml(input: jsonvalue.JsonValue) -> String {
  bjson.parse(input)
  |> xmb.render()
  |> string_tree.to_string
}