wallet-core/packages/taler-harness/src/integrationtests/test-peer-repair.ts

/*
 This file is part of GNU Taler
 (C) 2023 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 {
  AbsoluteTime,
  Duration,
  NotificationType,
  TransactionMajorState,
  TransactionMinorState,
  WalletNotification,
} from "@gnu-taler/taler-util";
import { WalletApiOperation } from "@gnu-taler/taler-wallet-core";
import { GlobalTestState } from "../harness/harness.js";
import {
  createSimpleTestkudosEnvironmentV2,
  createWalletDaemonWithClient,
  withdrawViaBankV2,
} from "../harness/helpers.js";
import * as fs from "node:fs";

export async function runPeerRepairTest(t: GlobalTestState) {
  // Set up test environment

  const { bank, exchange } = await createSimpleTestkudosEnvironmentV2(t);

  let allW1Notifications: WalletNotification[] = [];
  let allW2Notifications: WalletNotification[] = [];

  let w1 = await createWalletDaemonWithClient(t, {
    name: "w1",
    persistent: true,
    handleNotification(wn) {
      allW1Notifications.push(wn);
    },
  });
  const w2 = await createWalletDaemonWithClient(t, {
    name: "w2",
    handleNotification(wn) {
      allW2Notifications.push(wn);
    },
  });

  // Withdraw digital cash into the wallet.
  let wallet1 = w1.walletClient;
  const wallet2 = w2.walletClient;

  const withdrawalDoneCond = wallet1.waitForNotificationCond(
    (x) =>
      x.type === NotificationType.TransactionStateTransition &&
      x.newTxState.major === TransactionMajorState.Done &&
      x.transactionId.startsWith("txn:withdrawal:"),
  );

  await withdrawViaBankV2(t, {
    walletClient: wallet1,
    bank,
    exchange,
    amount: "TESTKUDOS:5",
  });

  await withdrawalDoneCond;
  const w1DbPath = w1.walletService.dbPath;
  const w1DbCopyPath = w1.walletService.dbPath + ".copy";
  fs.copyFileSync(w1DbPath, w1DbCopyPath);

  const purse_expiration = AbsoluteTime.toProtocolTimestamp(
    AbsoluteTime.addDuration(
      AbsoluteTime.now(),
      Duration.fromSpec({ days: 2 }),
    ),
  );

  const resp1 = await wallet1.client.call(
    WalletApiOperation.InitiatePeerPushDebit,
    {
      exchangeBaseUrl: exchange.baseUrl,
      partialContractTerms: {
        summary: "Hello World",
        amount: "TESTKUDOS:3",
        purse_expiration,
      },
    },
  );

  const peerPushDebitReady1Cond = wallet1.waitForNotificationCond(
    (x) =>
      x.type === NotificationType.TransactionStateTransition &&
      x.transactionId === resp1.transactionId &&
      x.newTxState.major === TransactionMajorState.Pending &&
      x.newTxState.minor === TransactionMinorState.Ready,
  );

  await peerPushDebitReady1Cond;

  const resp2 = await wallet2.client.call(
    WalletApiOperation.PreparePeerPushCredit,
    {
      talerUri: resp1.talerUri,
    },
  );

  const peerPushCreditDone1Cond = wallet2.waitForNotificationCond(
    (x) =>
      x.type === NotificationType.TransactionStateTransition &&
      x.transactionId === resp2.transactionId &&
      x.newTxState.major === TransactionMajorState.Done,
  );

  const peerPushDebitDone1Cond = wallet1.waitForNotificationCond(
    (x) =>
      x.type === NotificationType.TransactionStateTransition &&
      x.transactionId === resp1.transactionId &&
      x.newTxState.major === TransactionMajorState.Done,
  );

  await wallet2.client.call(WalletApiOperation.ConfirmPeerPushCredit, {
    peerPushCreditId: resp2.peerPushCreditId,
  });

  await peerPushCreditDone1Cond;
  await peerPushDebitDone1Cond;

  w1.walletClient.remoteWallet?.close();
  await w1.walletService.stop();

  fs.copyFileSync(w1DbCopyPath, w1DbPath);

  console.log(`copied back to ${w1DbPath}`);

  w1 = await createWalletDaemonWithClient(t, {
    name: "w1",
    persistent: true,
    handleNotification(wn) {
      allW1Notifications.push(wn);
    },
  });
  wallet1 = w1.walletClient;

  console.log("attempting peer-push-debit, should fail.");

  const initResp2 = await wallet1.client.call(
    WalletApiOperation.InitiatePeerPushDebit,
    {
      exchangeBaseUrl: exchange.baseUrl,
      partialContractTerms: {
        summary: "Hello World",
        amount: "TESTKUDOS:3",
        purse_expiration,
      },
    },
  );

  const peerPushDebitFailingCond = wallet1.waitForNotificationCond(
    (x) =>
      x.type === NotificationType.TransactionStateTransition &&
      x.transactionId === initResp2.transactionId &&
      x.newTxState.major === TransactionMajorState.Pending &&
      x.errorInfo != null,
  );

  console.log(`waiting for error on ${initResp2.transactionId}`);

  await peerPushDebitFailingCond;

  console.log("reached error");

  // Now withdraw so we have enough coins to re-select

  const withdraw2Res = await withdrawViaBankV2(t, {
    walletClient: wallet1,
    bank,
    exchange,
    amount: "TESTKUDOS:5",
  });

  await withdraw2Res.withdrawalFinishedCond;

  const peerPushDebitReady2Cond = wallet1.waitForNotificationCond(
    (x) =>
      x.type === NotificationType.TransactionStateTransition &&
      x.transactionId === initResp2.transactionId &&
      x.newTxState.major === TransactionMajorState.Pending &&
      x.newTxState.minor === TransactionMinorState.Ready,
  );

  await peerPushDebitReady2Cond;
}

runPeerRepairTest.suites = ["wallet"];