add auto-refund test case, fix bug detected by it

packages/taler-integrationtests/src/test-refund-auto.ts

@@ -0,0 +1,99 @@
+/*
+ This file is part of GNU Taler
+ (C) 2020 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
+/**
+ * Imports.
+ */
+import { runTest, GlobalTestState, MerchantPrivateApi } from "./harness";
+import { createSimpleTestkudosEnvironment, withdrawViaBank } from "./helpers";
+import { CoreApiResponse } from "taler-wallet-core";
+
+/**
+ * Run test for basic, bank-integrated withdrawal.
+ */
+runTest(async (t: GlobalTestState) => {
+  // Set up test environment
+
+  const {
+    wallet,
+    bank,
+    exchange,
+    merchant,
+  } = await createSimpleTestkudosEnvironment(t);
+
+  // Withdraw digital cash into the wallet.
+
+  await withdrawViaBank(t, { wallet, bank, exchange, amount: "TESTKUDOS:20" });
+
+  // Set up order.
+  const orderResp = await MerchantPrivateApi.createOrder(merchant, "default", {
+    order: {
+      summary: "Buy me!",
+      amount: "TESTKUDOS:5",
+      fulfillment_url: "taler://fulfillment-success/thx",
+      auto_refund: {
+        d_ms: 3000,
+      }
+    },
+  });
+
+  let orderStatus = await MerchantPrivateApi.queryPrivateOrderStatus(merchant, {
+    orderId: orderResp.order_id,
+  });
+
+  t.assertTrue(orderStatus.order_status === "unpaid");
+
+  // Make wallet pay for the order
+
+  const r1 = await wallet.apiRequest("preparePay", {
+    talerPayUri: orderStatus.taler_pay_uri,
+  });
+  t.assertTrue(r1.type === "response");
+
+  const r2 = await wallet.apiRequest("confirmPay", {
+    // FIXME: should be validated, don't cast!
+    proposalId: (r1.result as any).proposalId,
+  });
+  t.assertTrue(r2.type === "response");
+
+  // Check if payment was successful.
+
+  orderStatus = await MerchantPrivateApi.queryPrivateOrderStatus(merchant, {
+    orderId: orderResp.order_id,
+  });
+
+  t.assertTrue(orderStatus.order_status === "paid");
+
+  const ref = await MerchantPrivateApi.giveRefund(merchant, {
+    amount: "TESTKUDOS:5",
+    instance: "default",
+    justification: "foo",
+    orderId: orderResp.order_id,
+  });
+
+  console.log(ref);
+
+  // The wallet should now automatically pick up the refund.
+  await wallet.runUntilDone();
+  
+  const transactions = await wallet.getTransactions()
+  console.log(JSON.stringify(transactions, undefined, 2));
+
+  const transactionTypes = transactions.transactions.map((x) => x.type);
+  t.assertDeepEqual(transactionTypes, ["withdrawal", "payment", "refund"]);
+
+  await t.shutdown();
+});

packages/taler-wallet-core/src/operations/refresh.ts

@@ -571,10 +571,19 @@ export async function createRefreshGroup(
     retryInfo: initRetryInfo(),
   };
 
+  if (oldCoinPubs.length == 0) {
+    logger.warn("created refresh group with zero coins");
+    refreshGroup.timestampFinished = getTimestampNow();
+  }
+
   await tx.put(Stores.refreshGroups, refreshGroup);
 
   logger.trace(`created refresh group ${refreshGroupId}`);
 
+  processRefreshGroup(ws, refreshGroupId).catch((e) => {
+    logger.warn(`processing refresh group ${refreshGroupId} failed`);
+  });
+
   return {
     refreshGroupId,
   };

packages/taler-wallet-core/src/operations/refund.ts

@@ -259,7 +259,9 @@ async function acceptRefunds(
       }
 
       const refreshCoinsPubs = Object.values(refreshCoinsMap);
+      if (refreshCoinsPubs.length > 0) {
         await createRefreshGroup(ws, tx, refreshCoinsPubs, RefreshReason.Refund);
+      }
 
       // Are we done with querying yet, or do we need to do another round
       // after a retry delay?

packages/taler-wallet-core/src/operations/transactions.ts

@@ -265,7 +265,7 @@ export async function getTransactions(
 
         refundGroupKeys.forEach((groupKey: string) => {
           const refundTransactionId = makeEventId(
-            TransactionType.Payment,
+            TransactionType.Refund,
             pr.proposalId,
             groupKey,
           );

packages/taler-wallet-webextension/src/pages/popup.tsx

@@ -33,9 +33,11 @@ import {
   Balance,
   classifyTalerUri,
   TalerUriType,
+  TransactionsResponse,
+  Transaction,
+  TransactionType,
 } from "taler-wallet-core";
 
-
 import { abbrev, renderAmount, PageLink } from "../renderHtml";
 import * as wxApi from "../wxApi";
 
@@ -309,9 +311,37 @@ function formatAndCapitalize(text: string): string {
   return text;
 }
 
-const HistoryComponent = (props: any): JSX.Element => {
+function TransactionItem(props: { tx: Transaction }): JSX.Element {
-  return <span>TBD</span>;
+  const tx = props.tx;
-};
+  return <pre>{JSON.stringify(tx)}</pre>
+}
+
+function WalletHistory(props: any): JSX.Element {
+  const [transactions, setTransactions] = useState<
+    TransactionsResponse | undefined
+  >();
+
+  useEffect(() => {
+    const fetchData = async (): Promise<void> => {
+      const res = await wxApi.getTransactions();
+      setTransactions(res);
+    };
+    fetchData();
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, []);
+
+  if (!transactions) {
+    return <div>Loading ...</div>;
+  }
+
+  return (
+    <div>
+      {transactions.transactions.map((tx) => (
+        <TransactionItem tx={tx} />
+      ))}
+    </div>
+  );
+}
 
 class WalletSettings extends React.Component<any, any> {
   render(): JSX.Element {
@@ -492,6 +522,7 @@ function WalletPopup(): JSX.Element {
           <WalletBalanceView route="/balance" default />
           <WalletSettings route="/settings" />
           <WalletDebug route="/debug" />
+          <WalletHistory route="/history" />
         </Router>
       </div>
     </div>

packages/taler-wallet-webextension/src/wxApi.ts

@@ -35,6 +35,7 @@ import {
   OperationFailedError,
   GetWithdrawalDetailsForUriRequest,
   WithdrawUriInfoResponse,
+  TransactionsResponse,
 } from "taler-wallet-core";
 
 export interface ExtendedPermissionsResponse {
@@ -122,6 +123,13 @@ export function getBalance(): Promise<BalancesResponse> {
   return callBackend("getBalances", {});
 }
 
+/**
+ * Get balances for all currencies/exchanges.
+ */
+export function getTransactions(): Promise<TransactionsResponse> {
+  return callBackend("getTransactions", {});
+}
+
 /**
  * Return coins to a bank account.
  */