From 6b28885f0bfaf4ae4d6073db360f67088bda7a17 Mon Sep 17 00:00:00 2001
From: Florian Dold <florian@dold.me>
Date: Mon, 20 Feb 2023 14:40:26 +0100
Subject: wallet-core: stubs for suspend/resume tx

---
 packages/taler-util/src/wallet-types.ts            | 20 +++++++++++++++++++
 .../src/operations/transactions.ts                 | 19 ++++++++++++++++++
 packages/taler-wallet-core/src/wallet-api-types.ts | 23 ++++++++++++++++++++++
 packages/taler-wallet-core/src/wallet.ts           | 14 +++++++++++++
 4 files changed, 76 insertions(+)

diff --git a/packages/taler-util/src/wallet-types.ts b/packages/taler-util/src/wallet-types.ts
index aff83da14..338124d08 100644
--- a/packages/taler-util/src/wallet-types.ts
+++ b/packages/taler-util/src/wallet-types.ts
@@ -1649,6 +1649,26 @@ export const codecForAcceptTipRequest = (): Codec<AcceptTipRequest> =>
     .property("walletTipId", codecForString())
     .build("AcceptTipRequest");
 
+export interface SuspendTransactionRequest {
+  transactionId: string;
+}
+
+export const codecForSuspendTransaction =
+  (): Codec<SuspendTransactionRequest> =>
+    buildCodecForObject<AbortTransactionRequest>()
+      .property("transactionId", codecForString())
+      .build("SuspendTransactionRequest");
+
+export interface ResumeTransactionRequest {
+  transactionId: string;
+}
+
+export const codecForResumeTransaction =
+  (): Codec<ResumeTransactionRequest> =>
+    buildCodecForObject<ResumeTransactionRequest>()
+      .property("transactionId", codecForString())
+      .build("ResumeTransactionRequest");
+
 export interface AbortTransactionRequest {
   transactionId: string;
 
diff --git a/packages/taler-wallet-core/src/operations/transactions.ts b/packages/taler-wallet-core/src/operations/transactions.ts
index 9ee1c1e74..c03d2aa3d 100644
--- a/packages/taler-wallet-core/src/operations/transactions.ts
+++ b/packages/taler-wallet-core/src/operations/transactions.ts
@@ -1404,6 +1404,25 @@ export async function retryTransaction(
   }
 }
 
+/**
+ * Suspends a pending transaction, stopping any associated network activities,
+ * but with a chance of trying again at a later time. This could be useful if
+ * a user needs to save battery power or bandwidth and an operation is expected
+ * to take longer (such as a backup, recovery or very large withdrawal operation).
+ */
+export async function suspendTransaction(
+  ws: InternalWalletState,
+  transactionId: string,
+): Promise<void> {}
+
+/**
+ * Resume a suspended transaction.
+ */
+export async function resumeTransaction(
+  ws: InternalWalletState,
+  transactionId: string,
+): Promise<void> {}
+
 /**
  * Permanently delete a transaction based on the transaction ID.
  */
diff --git a/packages/taler-wallet-core/src/wallet-api-types.ts b/packages/taler-wallet-core/src/wallet-api-types.ts
index 904462c36..dc62f0c0f 100644
--- a/packages/taler-wallet-core/src/wallet-api-types.ts
+++ b/packages/taler-wallet-core/src/wallet-api-types.ts
@@ -157,6 +157,8 @@ export enum WalletApiOperation {
   GetExchangeDetailedInfo = "getExchangeDetailedInfo",
   RetryPendingNow = "retryPendingNow",
   AbortTransaction = "abortTransaction",
+  SuspendTransaction = "suspendTransaction",
+  ResumeTransaction = "resumeTransaction",
   ConfirmPay = "confirmPay",
   DumpCoins = "dumpCoins",
   SetCoinSuspended = "setCoinSuspended",
@@ -359,6 +361,25 @@ export type AbortTransactionOp = {
   response: EmptyObject;
 };
 
+/**
+ * Suspend a transaction
+ */
+export type SuspendTransactionOp = {
+  op: WalletApiOperation.SuspendTransaction;
+  request: AbortTransactionRequest;
+  response: EmptyObject;
+};
+
+
+/**
+ * Resume a transaction
+ */
+export type ResumeTransactionOp = {
+  op: WalletApiOperation.ResumeTransaction;
+  request: AbortTransactionRequest;
+  response: EmptyObject;
+};
+
 /**
  * Check for a refund based on a taler://refund URI.
  */
@@ -852,6 +873,8 @@ export type WalletOperations = {
   [WalletApiOperation.WithdrawTestkudos]: WithdrawTestkudosOp;
   [WalletApiOperation.ConfirmPay]: ConfirmPayOp;
   [WalletApiOperation.AbortTransaction]: AbortTransactionOp;
+  [WalletApiOperation.SuspendTransaction]: SuspendTransactionOp;
+  [WalletApiOperation.ResumeTransaction]: ResumeTransactionOp;
   [WalletApiOperation.GetBalances]: GetBalancesOp;
   [WalletApiOperation.GetBalanceDetail]: GetBalancesDetailOp;
   [WalletApiOperation.GetTransactions]: GetTransactionsOp;
diff --git a/packages/taler-wallet-core/src/wallet.ts b/packages/taler-wallet-core/src/wallet.ts
index 6f775142b..a036be86c 100644
--- a/packages/taler-wallet-core/src/wallet.ts
+++ b/packages/taler-wallet-core/src/wallet.ts
@@ -107,6 +107,8 @@ import {
   URL,
   WalletCoreVersion,
   WalletNotification,
+  codecForSuspendTransaction,
+  codecForResumeTransaction,
 } from "@gnu-taler/taler-util";
 import { TalerCryptoInterface } from "./crypto/cryptoImplementation.js";
 import {
@@ -230,7 +232,9 @@ import {
   deleteTransaction,
   getTransactionById,
   getTransactions,
+  resumeTransaction,
   retryTransaction,
+  suspendTransaction,
 } from "./operations/transactions.js";
 import {
   acceptWithdrawalFromUri,
@@ -1224,6 +1228,16 @@ async function dispatchRequestInternal<Op extends WalletApiOperation>(
       await abortTransaction(ws, req.transactionId, req.forceImmediateAbort);
       return {};
     }
+    case WalletApiOperation.SuspendTransaction: {
+      const req = codecForSuspendTransaction().decode(payload);
+      await suspendTransaction(ws, req.transactionId);
+      return {};
+    }
+    case WalletApiOperation.ResumeTransaction: {
+      const req = codecForResumeTransaction().decode(payload);
+      await resumeTransaction(ws, req.transactionId);
+      return {};
+    }
     case WalletApiOperation.DumpCoins: {
       return await dumpCoins(ws);
     }
-- 
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