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import { parseSafeXml, type ParsedXmlElement } from "./parser";
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export interface DeadPropertyFragment {
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  nsUri: string;
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  localName: string;
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  xmlValue: string;
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}
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function collectNamespaces(element: ParsedXmlElement): Record<string, string> {
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  const namespaces: Record<string, string> = {};
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  for (const [name, value] of Object.entries(element.attributes)) {
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    if (name === "xmlns") namespaces[""] = value;
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    if (name.startsWith("xmlns:")) namespaces[name.slice("xmlns:".length)] = value;
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  }
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  return namespaces;
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}
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function splitName(name: string): { prefix: string; localName: string } {
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  const index = name.indexOf(":");
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  if (index === -1) return { prefix: "", localName: name };
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  return { prefix: name.slice(0, index), localName: name.slice(index + 1) };
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}
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export function extractDeadPropertyFragment(xml: string): DeadPropertyFragment {
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  const { root } = parseSafeXml(xml);
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  const namespaces = collectNamespaces(root);
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  const { prefix, localName } = splitName(root.name);
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  return {
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    nsUri: namespaces[prefix] ?? "",
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    localName,
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    xmlValue: xml,
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  };
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}