src/resolve-bulk.js

export function parseBetIdList(input) {
  const tokens = String(input ?? '')
    .split(/[,\s]+/)
    .map((token) => token.trim())
    .filter(Boolean);

  if (tokens.length === 0) {
    return { ok: false, error: 'Please provide at least one bet ID.' };
  }

  const ids = [];
  const invalid = [];

  for (const token of tokens) {
    if (!/^\d+$/.test(token)) {
      invalid.push(token);
      continue;
    }

    const value = Number(token);
    if (!Number.isSafeInteger(value) || value <= 0) {
      invalid.push(token);
      continue;
    }

    if (!ids.includes(value)) {
      ids.push(value);
    }
  }

  if (invalid.length > 0) {
    return {
      ok: false,
      error: `Invalid bet ID value(s): ${invalid.join(', ')}`,
    };
  }

  return { ok: true, ids };
}