export default function listingResponseTranslator(dbResp, respSchema) {

  // -----------------------------
  // Normalize DB response
  // -----------------------------
  const rows = Array.isArray(dbResp)
    ? dbResp
    : dbResp
      ? [dbResp]
      : [];

  // -----------------------------
  // Pick only fields defined in response schema
  // -----------------------------
  const allowedFields = respSchema
    ? Object.keys(respSchema)
    : null;

  const normalizeRow = (row) => {
    if (!row || typeof row !== 'object') return null;

    // If schema exists, filter fields
    if (allowedFields) {
      const filtered = {};
      for (const key of allowedFields) {
        if (row[key] !== undefined) {
          filtered[key] = row[key];
        }
      }
      return filtered;
    }

    // Fallback (should not happen normally)
    return row;
  };

  // -----------------------------
  // Map rows
  // -----------------------------
  const result = rows
    .map(normalizeRow)
    .filter(Boolean);

  // -----------------------------
  // Return shape
  // -----------------------------
  // If schema represents a single object, return object
  if (!Array.isArray(respSchema)) {
    return result.length === 1 ? result[0] : result;
  }

  return result;
}