import {
  CheckpointRequiredError, // core wants a checkpoint before issuing more
  ContractError, // on-chain call failed or unexpected result
  Erc20AllowanceRequiredError, // a token pull needs an approve() first
  ReceiptSignerMismatchError, // the receipt was not signed by the operator
  RpcError, // 4Mica core service error (has .status, .body, .code, .details)
} from "@4mica/sdk";

try {
  const receipt = await client.payment.issueGuarantee(request);
  const guarantee = await client.payment.verifyGuarantee(receipt);
  await client.settlement.claim(cycleId).send();
} catch (err) {
  if (err instanceof CheckpointRequiredError) {
    // the payer must checkpoint err.details.cycleId before core issues more
  } else if (err instanceof ReceiptSignerMismatchError) {
    // bad receipt — the operator did not sign this guarantee
  } else if (err instanceof Erc20AllowanceRequiredError) {
    await client.settlement.pay(cycleId).selfFunded().approve();
  } else if (err instanceof ContractError) {
    // on-chain settlement failed
  } else if (err instanceof RpcError) {
    console.error(err.status, err.body);
  }
}