wallet-core: towards DD48

10 files changed, 182 insertions, 93 deletions

diff --git a/packages/taler-util/src/time.ts b/packages/taler-util/src/time.ts
index 75b3c7e94..55cda08a5 100644
--- a/packages/taler-util/src/time.ts
+++ b/packages/taler-util/src/time.ts
@@ -312,6 +312,14 @@ export namespace Duration {
 }
 
 export namespace AbsoluteTime {
+  export function getStampMsNow(): number {
+    return new Date().getTime();
+  }
+
+  export function getStampMsNever(): number {
+    return Number.MAX_SAFE_INTEGER;
+  }
+
   export function now(): AbsoluteTime {
     return {
       t_ms: new Date().getTime() + timeshift,
@@ -398,6 +406,13 @@ export namespace AbsoluteTime {
     };
   }
 
+  export function fromStampMs(stampMs: number): AbsoluteTime {
+    return {
+      t_ms: stampMs,
+      [opaque_AbsoluteTime]: true,
+    };
+  }
+
   export function fromPreciseTimestamp(t: TalerPreciseTimestamp): AbsoluteTime {
     if (t.t_s === "never") {
       return { t_ms: "never", [opaque_AbsoluteTime]: true };
@@ -409,6 +424,13 @@ export namespace AbsoluteTime {
     };
   }
 
+  export function toStampMs(at: AbsoluteTime): number {
+    if (at.t_ms === "never") {
+      return Number.MAX_SAFE_INTEGER;
+    }
+    return at.t_ms;
+  }
+
   export function toPreciseTimestamp(at: AbsoluteTime): TalerPreciseTimestamp {
     if (at.t_ms == "never") {
       return {
diff --git a/packages/taler-util/src/wallet-types.ts b/packages/taler-util/src/wallet-types.ts
index 04fb43ec6..01c1838d5 100644
--- a/packages/taler-util/src/wallet-types.ts
+++ b/packages/taler-util/src/wallet-types.ts
@@ -1262,17 +1262,25 @@ export interface ExchangeFullDetails {
 }
 
 export enum ExchangeTosStatus {
-  New = "new",
+  Pending = "pending",
+  Proposed = "proposed",
   Accepted = "accepted",
-  Changed = "changed",
-  NotFound = "not-found",
-  Unknown = "unknown",
 }
 
 export enum ExchangeEntryStatus {
-  Unknown = "unknown",
-  Outdated = "outdated",
-  Ok = "ok",
+  Preset = "preset",
+  Ephemeral = "ephemeral",
+  Used = "used",
+}
+
+export enum ExchangeUpdateStatus {
+  Initial = "initial",
+  InitialUpdate = "initial(update)",
+  Suspended = "suspended",
+  Failed = "failed",
+  OutdatedUpdate = "outdated(update)",
+  Ready = "ready",
+  ReadyUpdate = "ready(update)",
 }
 
 export interface OperationErrorInfo {
@@ -1285,13 +1293,9 @@ export interface ExchangeListItem {
   currency: string | undefined;
   paytoUris: string[];
   tosStatus: ExchangeTosStatus;
-  exchangeStatus: ExchangeEntryStatus;
+  exchangeEntryStatus: ExchangeEntryStatus;
+  exchangeUpdateStatus: ExchangeUpdateStatus;
   ageRestrictionOptions: number[];
-  /**
-   * Permanently added to the wallet, as opposed to just
-   * temporarily queried.
-   */
-  permanent: boolean;
 
   /**
    * Information about the last error that occurred when trying
@@ -1370,8 +1374,8 @@ export const codecForExchangeListItem = (): Codec<ExchangeListItem> =>
     .property("exchangeBaseUrl", codecForString())
     .property("paytoUris", codecForList(codecForString()))
     .property("tosStatus", codecForAny())
-    .property("exchangeStatus", codecForAny())
-    .property("permanent", codecForBoolean())
+    .property("exchangeEntryStatus", codecForAny())
+    .property("exchangeUpdateStatus", codecForAny())
     .property("ageRestrictionOptions", codecForList(codecForNumber()))
     .build("ExchangeListItem");
 
diff --git a/packages/taler-wallet-core/src/internal-wallet-state.ts b/packages/taler-wallet-core/src/internal-wallet-state.ts
index 742af89a8..76aee05bd 100644
--- a/packages/taler-wallet-core/src/internal-wallet-state.ts
+++ b/packages/taler-wallet-core/src/internal-wallet-state.ts
@@ -42,7 +42,7 @@ import { HttpRequestLibrary } from "@gnu-taler/taler-util/http";
 import { TalerCryptoInterface } from "./crypto/cryptoImplementation.js";
 import {
   ExchangeDetailsRecord,
-  ExchangeRecord,
+  ExchangeEntryRecord,
   RefreshReasonDetails,
   WalletStoresV1,
 } from "./db.js";
@@ -108,7 +108,7 @@ export interface ExchangeOperations {
   ): Promise<ExchangeDetailsRecord | undefined>;
   getExchangeTrust(
     ws: InternalWalletState,
-    exchangeInfo: ExchangeRecord,
+    exchangeInfo: ExchangeEntryRecord,
   ): Promise<TrustInfo>;
   updateExchangeFromUrl(
     ws: InternalWalletState,
@@ -118,7 +118,7 @@ export interface ExchangeOperations {
       cancellationToken?: CancellationToken;
     },
   ): Promise<{
-    exchange: ExchangeRecord;
+    exchange: ExchangeEntryRecord;
     exchangeDetails: ExchangeDetailsRecord;
   }>;
 }
diff --git a/packages/taler-wallet-core/src/operations/backup/import.ts b/packages/taler-wallet-core/src/operations/backup/import.ts
index a53b624e8..836c65643 100644
--- a/packages/taler-wallet-core/src/operations/backup/import.ts
+++ b/packages/taler-wallet-core/src/operations/backup/import.ts
@@ -342,20 +342,19 @@ export async function importBackup(
         if (existingExchange) {
           continue;
         }
-        await tx.exchanges.put({
-          baseUrl: backupExchange.base_url,
-          detailsPointer: {
-            currency: backupExchange.currency,
-            masterPublicKey: backupExchange.master_public_key,
-            updateClock: backupExchange.update_clock,
-          },
-          permanent: true,
-          lastUpdate: undefined,
-          nextUpdate: TalerPreciseTimestamp.now(),
-          nextRefreshCheck: TalerPreciseTimestamp.now(),
-          lastKeysEtag: undefined,
-          lastWireEtag: undefined,
-        });
+        // await tx.exchanges.put({
+        //   baseUrl: backupExchange.base_url,
+        //   detailsPointer: {
+        //     currency: backupExchange.currency,
+        //     masterPublicKey: backupExchange.master_public_key,
+        //     updateClock: backupExchange.update_clock,
+        //   },
+        //   lastUpdate: undefined,
+        //   nextUpdate: TalerPreciseTimestamp.now(),
+        //   nextRefreshCheck: TalerPreciseTimestamp.now(),
+        //   lastKeysEtag: undefined,
+        //   lastWireEtag: undefined,
+        // });
       }
 
       for (const backupExchangeDetails of backupBlob.exchange_details) {
diff --git a/packages/taler-wallet-core/src/operations/common.ts b/packages/taler-wallet-core/src/operations/common.ts
index 7a8b78b53..e96beb5b2 100644
--- a/packages/taler-wallet-core/src/operations/common.ts
+++ b/packages/taler-wallet-core/src/operations/common.ts
@@ -30,6 +30,7 @@ import {
   ExchangeEntryStatus,
   ExchangeListItem,
   ExchangeTosStatus,
+  ExchangeUpdateStatus,
   getErrorDetailFromException,
   j2s,
   Logger,
@@ -47,7 +48,7 @@ import {
   WalletStoresV1,
   CoinRecord,
   ExchangeDetailsRecord,
-  ExchangeRecord,
+  ExchangeEntryRecord,
   BackupProviderRecord,
   DepositGroupRecord,
   PeerPullPaymentIncomingRecord,
@@ -59,6 +60,8 @@ import {
   RefreshGroupRecord,
   RewardRecord,
   WithdrawalGroupRecord,
+  ExchangeEntryDbUpdateStatus,
+  ExchangeEntryDbRecordStatus,
 } from "../db.js";
 import { makeErrorDetail, TalerError } from "@gnu-taler/taler-util";
 import { InternalWalletState } from "../internal-wallet-state.js";
@@ -529,16 +532,16 @@ export function getExchangeTosStatus(
   exchangeDetails: ExchangeDetailsRecord,
 ): ExchangeTosStatus {
   if (!exchangeDetails.tosAccepted) {
-    return ExchangeTosStatus.New;
+    return ExchangeTosStatus.Proposed;
   }
   if (exchangeDetails.tosAccepted?.etag == exchangeDetails.tosCurrentEtag) {
     return ExchangeTosStatus.Accepted;
   }
-  return ExchangeTosStatus.Changed;
+  return ExchangeTosStatus.Proposed;
 }
 
 export function makeExchangeListItem(
-  r: ExchangeRecord,
+  r: ExchangeEntryRecord,
   exchangeDetails: ExchangeDetailsRecord | undefined,
   lastError: TalerErrorDetail | undefined,
 ): ExchangeListItem {
@@ -547,30 +550,57 @@ export function makeExchangeListItem(
         error: lastError,
       }
     : undefined;
-  if (!exchangeDetails) {
-    return {
-      exchangeBaseUrl: r.baseUrl,
-      currency: undefined,
-      tosStatus: ExchangeTosStatus.Unknown,
-      paytoUris: [],
-      exchangeStatus: ExchangeEntryStatus.Unknown,
-      permanent: r.permanent,
-      ageRestrictionOptions: [],
-      lastUpdateErrorInfo,
-    };
+
+  let exchangeUpdateStatus: ExchangeUpdateStatus;
+  switch (r.updateStatus) {
+    case ExchangeEntryDbUpdateStatus.Failed:
+      exchangeUpdateStatus = ExchangeUpdateStatus.Failed;
+      break;
+    case ExchangeEntryDbUpdateStatus.Initial:
+      exchangeUpdateStatus = ExchangeUpdateStatus.Initial;
+      break;
+    case ExchangeEntryDbUpdateStatus.InitialUpdate:
+      exchangeUpdateStatus = ExchangeUpdateStatus.InitialUpdate;
+      break;
+    case ExchangeEntryDbUpdateStatus.OutdatedUpdate:
+      exchangeUpdateStatus = ExchangeUpdateStatus.OutdatedUpdate;
+      break;
+    case ExchangeEntryDbUpdateStatus.Ready:
+      exchangeUpdateStatus = ExchangeUpdateStatus.Ready;
+      break;
+    case ExchangeEntryDbUpdateStatus.ReadyUpdate:
+      exchangeUpdateStatus = ExchangeUpdateStatus.ReadyUpdate;
+      break;
+    case ExchangeEntryDbUpdateStatus.Suspended:
+      exchangeUpdateStatus = ExchangeUpdateStatus.Suspended;
+      break;
+  }
+
+  let exchangeEntryStatus: ExchangeEntryStatus;
+  switch (r.entryStatus) {
+    case ExchangeEntryDbRecordStatus.Ephemeral:
+      exchangeEntryStatus = ExchangeEntryStatus.Ephemeral;
+      break;
+    case ExchangeEntryDbRecordStatus.Preset:
+      exchangeEntryStatus = ExchangeEntryStatus.Preset;
+      break;
+    case ExchangeEntryDbRecordStatus.Used:
+      exchangeEntryStatus = ExchangeEntryStatus.Used;
+      break;
   }
-  let exchangeStatus;
-  exchangeStatus = ExchangeEntryStatus.Ok;
+
   return {
     exchangeBaseUrl: r.baseUrl,
-    currency: exchangeDetails.currency,
-    tosStatus: getExchangeTosStatus(exchangeDetails),
-    paytoUris: exchangeDetails.wireInfo.accounts.map((x) => x.payto_uri),
-    exchangeStatus,
-    permanent: r.permanent,
-    ageRestrictionOptions: exchangeDetails.ageMask
+    currency: exchangeDetails?.currency,
+    exchangeUpdateStatus,
+    exchangeEntryStatus,
+    tosStatus: exchangeDetails
+      ? getExchangeTosStatus(exchangeDetails)
+      : ExchangeTosStatus.Pending,
+    ageRestrictionOptions: exchangeDetails?.ageMask
       ? AgeRestriction.getAgeGroupsFromMask(exchangeDetails.ageMask)
       : [],
+    paytoUris: exchangeDetails?.wireInfo.accounts.map((x) => x.payto_uri) ?? [],
     lastUpdateErrorInfo,
   };
 }
@@ -892,13 +922,13 @@ export namespace TaskIdentifiers {
   export function forWithdrawal(wg: WithdrawalGroupRecord): TaskId {
     return `${PendingTaskType.Withdraw}:${wg.withdrawalGroupId}` as TaskId;
   }
-  export function forExchangeUpdate(exch: ExchangeRecord): TaskId {
+  export function forExchangeUpdate(exch: ExchangeEntryRecord): TaskId {
     return `${PendingTaskType.ExchangeUpdate}:${exch.baseUrl}` as TaskId;
   }
   export function forExchangeUpdateFromUrl(exchBaseUrl: string): TaskId {
     return `${PendingTaskType.ExchangeUpdate}:${exchBaseUrl}` as TaskId;
   }
-  export function forExchangeCheckRefresh(exch: ExchangeRecord): TaskId {
+  export function forExchangeCheckRefresh(exch: ExchangeEntryRecord): TaskId {
     return `${PendingTaskType.ExchangeCheckRefresh}:${exch.baseUrl}` as TaskId;
   }
   export function forTipPickup(tipRecord: RewardRecord): TaskId {
diff --git a/packages/taler-wallet-core/src/operations/exchanges.ts b/packages/taler-wallet-core/src/operations/exchanges.ts
index c6b46e360..311a71a6e 100644
--- a/packages/taler-wallet-core/src/operations/exchanges.ts
+++ b/packages/taler-wallet-core/src/operations/exchanges.ts
@@ -32,6 +32,7 @@ import {
   encodeCrock,
   ExchangeAuditor,
   ExchangeDenomination,
+  ExchangeEntryStatus,
   ExchangeGlobalFees,
   ExchangeSignKeyJson,
   ExchangeWireJson,
@@ -66,10 +67,15 @@ import {
   DenominationRecord,
   DenominationVerificationStatus,
   ExchangeDetailsRecord,
-  ExchangeRecord,
+  ExchangeEntryRecord,
   WalletStoresV1,
 } from "../db.js";
-import { isWithdrawableDenom } from "../index.js";
+import {
+  ExchangeEntryDbRecordStatus,
+  ExchangeEntryDbUpdateStatus,
+  isWithdrawableDenom,
+  WalletDbReadWriteTransaction,
+} from "../index.js";
 import { InternalWalletState, TrustInfo } from "../internal-wallet-state.js";
 import { checkDbInvariant } from "../util/invariants.js";
 import {
@@ -326,6 +332,26 @@ export async function downloadExchangeInfo(
   };
 }
 
+export async function addPresetExchangeEntry(
+  tx: WalletDbReadWriteTransaction<"exchanges">,
+  exchangeBaseUrl: string,
+): Promise<void> {
+  let exchange = await tx.exchanges.get(exchangeBaseUrl);
+  if (!exchange) {
+    const r: ExchangeEntryRecord = {
+      entryStatus: ExchangeEntryDbRecordStatus.Preset,
+      updateStatus: ExchangeEntryDbUpdateStatus.Initial,
+      baseUrl: exchangeBaseUrl,
+      detailsPointer: undefined,
+      lastUpdate: undefined,
+      lastKeysEtag: undefined,
+      nextRefreshCheckStampMs: AbsoluteTime.getStampMsNever(),
+      nextUpdateStampMs: AbsoluteTime.getStampMsNever(),
+    };
+    await tx.exchanges.put(r);
+  }
+}
+
 export async function provideExchangeRecordInTx(
   ws: InternalWalletState,
   tx: GetReadWriteAccess<{
@@ -335,20 +361,20 @@ export async function provideExchangeRecordInTx(
   baseUrl: string,
   now: AbsoluteTime,
 ): Promise<{
-  exchange: ExchangeRecord;
+  exchange: ExchangeEntryRecord;
   exchangeDetails: ExchangeDetailsRecord | undefined;
 }> {
   let exchange = await tx.exchanges.get(baseUrl);
   if (!exchange) {
-    const r: ExchangeRecord = {
-      permanent: true,
+    const r: ExchangeEntryRecord = {
+      entryStatus: ExchangeEntryDbRecordStatus.Ephemeral,
+      updateStatus: ExchangeEntryDbUpdateStatus.InitialUpdate,
       baseUrl: baseUrl,
       detailsPointer: undefined,
       lastUpdate: undefined,
-      nextUpdate: AbsoluteTime.toPreciseTimestamp(now),
-      nextRefreshCheck: AbsoluteTime.toPreciseTimestamp(now),
+      nextUpdateStampMs: AbsoluteTime.getStampMsNever(),
+      nextRefreshCheckStampMs: AbsoluteTime.getStampMsNever(),
       lastKeysEtag: undefined,
-      lastWireEtag: undefined,
     };
     await tx.exchanges.put(r);
     exchange = r;
@@ -534,6 +560,10 @@ export async function downloadTosFromAcceptedFormat(
   );
 }
 
+/**
+ * FIXME: Split this into two parts: (a) triggering the exchange
+ * to be updated and (b) waiting for the update to finish.
+ */
 export async function updateExchangeFromUrl(
   ws: InternalWalletState,
   baseUrl: string,
@@ -543,7 +573,7 @@ export async function updateExchangeFromUrl(
     cancellationToken?: CancellationToken;
   } = {},
 ): Promise<{
-  exchange: ExchangeRecord;
+  exchange: ExchangeEntryRecord;
   exchangeDetails: ExchangeDetailsRecord;
 }> {
   const canonUrl = canonicalizeBaseUrl(baseUrl);
@@ -613,7 +643,7 @@ export async function updateExchangeFromUrlHandler(
     !forceNow &&
     exchangeDetails !== undefined &&
     !AbsoluteTime.isExpired(
-      AbsoluteTime.fromPreciseTimestamp(exchange.nextUpdate),
+      AbsoluteTime.fromStampMs(exchange.nextUpdateStampMs),
     )
   ) {
     logger.trace("using existing exchange info");
@@ -755,11 +785,11 @@ export async function updateExchangeFromUrlHandler(
         newDetails.rowId = existingDetails.rowId;
       }
       r.lastUpdate = TalerPreciseTimestamp.now();
-      r.nextUpdate = AbsoluteTime.toPreciseTimestamp(
+      r.nextUpdateStampMs = AbsoluteTime.toStampMs(
         AbsoluteTime.fromProtocolTimestamp(keysInfo.expiry),
       );
       // New denominations might be available.
-      r.nextRefreshCheck = TalerPreciseTimestamp.now();
+      r.nextRefreshCheckStampMs = AbsoluteTime.getStampMsNow();
       if (detailsPointerChanged) {
         r.detailsPointer = {
           currency: newDetails.currency,
@@ -948,7 +978,7 @@ export async function getExchangePaytoUri(
  */
 export async function getExchangeTrust(
   ws: InternalWalletState,
-  exchangeInfo: ExchangeRecord,
+  exchangeInfo: ExchangeEntryRecord,
 ): Promise<TrustInfo> {
   let isTrusted = false;
   let isAudited = false;
diff --git a/packages/taler-wallet-core/src/operations/pending.ts b/packages/taler-wallet-core/src/operations/pending.ts
index 6c6546f83..e37e45c16 100644
--- a/packages/taler-wallet-core/src/operations/pending.ts
+++ b/packages/taler-wallet-core/src/operations/pending.ts
@@ -45,6 +45,7 @@ import {
   PeerPushPaymentIncomingRecord,
   RefundGroupRecord,
   RefundGroupStatus,
+  ExchangeEntryDbUpdateStatus,
 } from "../db.js";
 import {
   PendingOperationsResponse,
@@ -81,19 +82,25 @@ async function gatherExchangePending(
   ws: InternalWalletState,
   tx: GetReadOnlyAccess<{
     exchanges: typeof WalletStoresV1.exchanges;
-    exchangeDetails: typeof WalletStoresV1.exchangeDetails;
     operationRetries: typeof WalletStoresV1.operationRetries;
   }>,
   now: AbsoluteTime,
   resp: PendingOperationsResponse,
 ): Promise<void> {
-  // FIXME: We should do a range query here based on the update time.
+  // FIXME: We should do a range query here based on the update time
+  // and/or the entry state.
   await tx.exchanges.iter().forEachAsync(async (exch) => {
+    switch (exch.updateStatus) {
+      case ExchangeEntryDbUpdateStatus.Initial:
+      case ExchangeEntryDbUpdateStatus.Suspended:
+      case ExchangeEntryDbUpdateStatus.Failed:
+        return;
+    }
     const opTag = TaskIdentifiers.forExchangeUpdate(exch);
     let opr = await tx.operationRetries.get(opTag);
     const timestampDue =
       opr?.retryInfo.nextRetry ??
-      AbsoluteTime.fromPreciseTimestamp(exch.nextUpdate);
+      AbsoluteTime.fromStampMs(exch.nextUpdateStampMs);
     resp.pendingOperations.push({
       type: PendingTaskType.ExchangeUpdate,
       ...getPendingCommon(ws, opTag, timestampDue),
@@ -108,7 +115,7 @@ async function gatherExchangePending(
       resp.pendingOperations.push({
         type: PendingTaskType.ExchangeCheckRefresh,
         ...getPendingCommon(ws, opTag, timestampDue),
-        timestampDue: AbsoluteTime.fromPreciseTimestamp(exch.nextRefreshCheck),
+        timestampDue: AbsoluteTime.fromStampMs(exch.nextRefreshCheckStampMs),
         givesLifeness: false,
         exchangeBaseUrl: exch.baseUrl,
       });
@@ -184,8 +191,9 @@ export async function iterRecordsForWithdrawal(
       WithdrawalGroupStatus.PendingRegisteringBank,
       WithdrawalGroupStatus.PendingAml,
     );
-    withdrawalGroupRecords =
-      await tx.withdrawalGroups.indexes.byStatus.getAll(range);
+    withdrawalGroupRecords = await tx.withdrawalGroups.indexes.byStatus.getAll(
+      range,
+    );
   } else {
     withdrawalGroupRecords =
       await tx.withdrawalGroups.indexes.byStatus.getAll();
@@ -344,12 +352,8 @@ export async function iterRecordsForRefund(
   f: (r: RefundGroupRecord) => Promise<void>,
 ): Promise<void> {
   if (filter.onlyState === "nonfinal") {
-    const keyRange = GlobalIDB.KeyRange.only(
-      RefundGroupStatus.Pending
-    );
-    await tx.refundGroups.indexes.byStatus
-      .iter(keyRange)
-      .forEachAsync(f);
+    const keyRange = GlobalIDB.KeyRange.only(RefundGroupStatus.Pending);
+    await tx.refundGroups.indexes.byStatus.iter(keyRange).forEachAsync(f);
   } else {
     await tx.refundGroups.iter().forEachAsync(f);
   }
diff --git a/packages/taler-wallet-core/src/operations/refresh.ts b/packages/taler-wallet-core/src/operations/refresh.ts
index 72d1a2725..fb356f0fc 100644
--- a/packages/taler-wallet-core/src/operations/refresh.ts
+++ b/packages/taler-wallet-core/src/operations/refresh.ts
@@ -1190,14 +1190,14 @@ export async function autoRefresh(
           `created refresh group for auto-refresh (${res.refreshGroupId})`,
         );
       }
-//      logger.trace(
-//        `current wallet time: ${AbsoluteTime.toIsoString(AbsoluteTime.now())}`,
-//      );
+      //      logger.trace(
+      //        `current wallet time: ${AbsoluteTime.toIsoString(AbsoluteTime.now())}`,
+      //      );
       logger.trace(
         `next refresh check at ${AbsoluteTime.toIsoString(minCheckThreshold)}`,
       );
-      exchange.nextRefreshCheck =
-        AbsoluteTime.toPreciseTimestamp(minCheckThreshold);
+      exchange.nextRefreshCheckStampMs =
+        AbsoluteTime.toStampMs(minCheckThreshold);
       await tx.exchanges.put(exchange);
     });
   return TaskRunResult.finished();
diff --git a/packages/taler-wallet-core/src/operations/withdraw.ts b/packages/taler-wallet-core/src/operations/withdraw.ts
index 040d191e1..d8ce0a9a2 100644
--- a/packages/taler-wallet-core/src/operations/withdraw.ts
+++ b/packages/taler-wallet-core/src/operations/withdraw.ts
@@ -128,6 +128,8 @@ import {
 } from "../util/coinSelection.js";
 import {
   ExchangeDetailsRecord,
+  ExchangeEntryDbRecordStatus,
+  ExchangeEntryDbUpdateStatus,
   PendingTaskType,
   isWithdrawableDenom,
 } from "../index.js";
@@ -2341,10 +2343,6 @@ export async function internalPerformCreateWithdrawalGroup(
   }>,
   prep: PrepareCreateWithdrawalGroupResult,
 ): Promise<PerformCreateWithdrawalGroupResult> {
-  const transactionId = constructTransactionIdentifier({
-    tag: TransactionType.Withdrawal,
-    withdrawalGroupId: prep.withdrawalGroup.withdrawalGroupId,
-  });
   const { withdrawalGroup } = prep;
   if (!prep.creationInfo) {
     return { withdrawalGroup, transitionInfo: undefined };
@@ -2361,6 +2359,7 @@ export async function internalPerformCreateWithdrawalGroup(
   const exchange = await tx.exchanges.get(withdrawalGroup.exchangeBaseUrl);
   if (exchange) {
     exchange.lastWithdrawal = TalerPreciseTimestamp.now();
+    exchange.entryStatus = ExchangeEntryDbRecordStatus.Used;
     await tx.exchanges.put(exchange);
   }
 
diff --git a/packages/taler-wallet-core/src/wallet.ts b/packages/taler-wallet-core/src/wallet.ts
index 194894e52..c9ccda20d 100644
--- a/packages/taler-wallet-core/src/wallet.ts
+++ b/packages/taler-wallet-core/src/wallet.ts
@@ -189,6 +189,7 @@ import {
 } from "./operations/deposits.js";
 import {
   acceptExchangeTermsOfService,
+  addPresetExchangeEntry,
   downloadTosFromAcceptedFormat,
   getExchangeDetails,
   getExchangeRequestTimeout,
@@ -533,6 +534,7 @@ async function fillDefaults(ws: InternalWalletState): Promise<void> {
         await tx.auditorTrust.put(c);
       }
       for (const baseUrl of ws.config.builtin.exchanges) {
+        await addPresetExchangeEntry(tx, baseUrl);
         const now = AbsoluteTime.now();
         provideExchangeRecordInTx(ws, tx, baseUrl, now);
       }
@@ -1688,8 +1690,7 @@ export class Wallet {
 
   public static defaultConfig: Readonly<WalletConfig> = {
     builtin: {
-      //exchanges: ["https://exchange.demo.taler.net/"],
-      exchanges: [],
+      exchanges: ["https://exchange.demo.taler.net/"],
       auditors: [
         {
           currency: "KUDOS",