import gleam/json
import gleam/result
import gleam/string_tree
import xmb
import xmljson/element

/// Parse an XML string into a JSON object.
pub fn to_json(input: String) -> Result(json.Json, element.DecodeError) {
  element.from_xml(input)
  |> result.map(fn(elem) { element.to_json(elem) })
}

/// Parse an JSON object into an xml fragment.
pub fn to_xml_fragment(input: String) -> Result(String, json.DecodeError) {
  element.from_json(input)
  |> result.map(fn(elem) {
    elem
    |> element.to_xml_type()
    |> xmb.render_fragment()
    |> string_tree.to_string
  })
}

/// Parse an JSON object into an xml string.
pub fn to_xml(input: String) -> Result(String, json.DecodeError) {
  element.from_json(input)
  |> result.map(fn(elem) {
    let x =
      elem
      |> element.to_xml_type()
    xmb.render([x])
    |> string_tree.to_string
  })
}