/**
 * parseAiJson
 * Attempts to extract a JSON array or object from a string that may include
 * extra text or a fenced code block (```json ... ```).
 *
 * @param {string} rawText - The raw string from the AI response.
 * @returns {any} - The parsed JSON (object or array).
 * @throws Will throw an error if parsing fails.
 */
function parseAIJson(rawText) {
  if (!rawText || typeof rawText !== 'string') {
    throw new Error('No valid text provided for parseAiJson.');
  }

  // 1) Look for a fenced code block with "```json" ... "```"
  const fencedRegex = /```json\s*([\s\S]*?)\s*```/i;
  const match = rawText.match(fencedRegex);
  if (match && match[1]) {
    // parse the fenced code block
    const jsonStr = match[1].trim();
    return JSON.parse(jsonStr);
  }

  // 2) Fallback: try parsing the entire string directly
  // Sometimes the AI might return just a raw JSON array without fences
  return JSON.parse(rawText);
}

export default parseAIJson;