Send a Payout

function sendPayouts(bytes32 batchId, address[] calldata recipients, uint256[] calldata amounts) external {
    if (processed[batchId]) revert BatchAlreadyProcessed(batchId);
    if (recipients.length == 0 || recipients.length != amounts.length) revert InvalidArrayLengths();
    if (recipients.length > MAX_RECIPIENTS) revert TooManyRecipients();
    processed[batchId] = true;

    for (uint256 i; i < recipients.length; ++i) {
        require(token.transferFrom(msg.sender, recipients[i], amounts[i]), "transfer failed");
        emit PayoutSent(batchId, msg.sender, recipients[i], amounts[i]);
    }
}

export async function sendPayouts(
  payout: Address,
  batchReference: string,
  recipients: Address[],
  amounts: string[],
) {
  if (recipients.length !== amounts.length) throw new Error("Recipient and amount counts differ");
  const batchId = keccak256(toHex(batchReference));
  const simulation = await publicClient.simulateContract({
    account,
    address: payout,
    abi: payoutAbi,
    functionName: "sendPayouts",
    args: [batchId, recipients, amounts.map((amount) => parseUnits(amount, 6))],
  });
  const hash = await walletClient.writeContract(simulation.request);
  return publicClient.waitForTransactionReceipt({ hash, confirmations: 2 });
}