From 859d5c56c7a5b26e741254d6d1e9c5731a787ae1 Mon Sep 17 00:00:00 2001
From: Florian Dold <florian@dold.me>
Date: Mon, 8 Apr 2024 22:29:51 +0200
Subject: wallet-core: support cancellation for getWithdrawalDetailsForAmount

---
 packages/taler-util/src/errors.ts            |  8 ++++++++
 packages/taler-util/src/taler-error-codes.ts |  8 ++++++++
 packages/taler-util/src/wallet-types.ts      | 13 +++++++++++++
 3 files changed, 29 insertions(+)

(limited to 'packages/taler-util')

diff --git a/packages/taler-util/src/errors.ts b/packages/taler-util/src/errors.ts
index 11f01a3fe..4dea7e1b6 100644
--- a/packages/taler-util/src/errors.ts
+++ b/packages/taler-util/src/errors.ts
@@ -25,6 +25,7 @@
  */
 import {
   AbsoluteTime,
+  CancellationToken,
   PaymentInsufficientBalanceDetails,
   TalerErrorCode,
   TalerErrorDetail,
@@ -285,6 +286,13 @@ export function getErrorDetailFromException(e: any): TalerErrorDetail {
   if (e instanceof TalerError) {
     return e.errorDetail;
   }
+  if (e instanceof CancellationToken.CancellationError) {
+    const err = makeErrorDetail(
+      TalerErrorCode.WALLET_CORE_REQUEST_CANCELLED,
+      {},
+    );
+    return err;
+  }
   if (e instanceof Error) {
     const err = makeErrorDetail(
       TalerErrorCode.WALLET_UNEXPECTED_EXCEPTION,
diff --git a/packages/taler-util/src/taler-error-codes.ts b/packages/taler-util/src/taler-error-codes.ts
index addb1b047..c3c008a1c 100644
--- a/packages/taler-util/src/taler-error-codes.ts
+++ b/packages/taler-util/src/taler-error-codes.ts
@@ -3944,6 +3944,14 @@ export enum TalerErrorCode {
   WALLET_TALER_URI_MALFORMED = 7035,
 
 
+  /**
+   * A wallet-core request was cancelled and thus can't provide a response.
+   * Returned with an HTTP status code of #MHD_HTTP_UNINITIALIZED (0).
+   * (A value of 0 indicates that the error is generated client-side).
+   */
+  WALLET_CORE_REQUEST_CANCELLED = 7036,
+
+
   /**
    * We encountered a timeout with our payment backend.
    * Returned with an HTTP status code of #MHD_HTTP_GATEWAY_TIMEOUT (504).
diff --git a/packages/taler-util/src/wallet-types.ts b/packages/taler-util/src/wallet-types.ts
index 34d91d3d6..fa0f385b7 100644
--- a/packages/taler-util/src/wallet-types.ts
+++ b/packages/taler-util/src/wallet-types.ts
@@ -1857,6 +1857,19 @@ export interface GetWithdrawalDetailsForAmountRequest {
   exchangeBaseUrl: string;
   amount: AmountString;
   restrictAge?: number;
+
+  /**
+   * ID provided by the client to cancel the request.
+   *
+   * If the same request is made again with the same clientCancellationId,
+   * all previous requests are cancelled.
+   *
+   * The cancelled request will receive an error response with
+   * an error code that indicates the cancellation.
+   *
+   * The cancellation is best-effort, responses might still arrive.
+   */
+  clientCancellationId?: string;
 }
 
 export interface AcceptBankIntegratedWithdrawalRequest {
-- 
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