export function parseJsonResponseText(text: string) {
  const trimmed = text.trim();
  if (!trimmed) {
    throw new Error('LLM returned an empty response.');
  }

  const fencedMatch = trimmed.match(/```(?:json)?\s*([\s\S]*?)```/iu);
  if (fencedMatch?.[1]) {
    return JSON.parse(fencedMatch[1].trim());
  }

  const firstBrace = trimmed.indexOf('{');
  const lastBrace = trimmed.lastIndexOf('}');
  if (firstBrace >= 0 && lastBrace > firstBrace) {
    return JSON.parse(trimmed.slice(firstBrace, lastBrace + 1));
  }

  return JSON.parse(trimmed);
}

export function parseLineListContent(text: string, maxItems = 3) {
  return text
    .replace(/\r/g, '')
    .split('\n')
    .map((line) => line.trim().replace(/^[-*\d.)\s]+/u, '').trim())
    .filter(Boolean)
    .slice(0, maxItems);
}