/*
 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 {
  AmountString,
  NotificationType,
  TalerMerchantApi,
  TransactionIdStr,
  TransactionMajorState,
  TransactionType,
  j2s,
} from "@gnu-taler/taler-util";
import {
  WalletApiOperation,
  parseTransactionIdentifier,
} from "@gnu-taler/taler-wallet-core";
import { GlobalTestState, generateRandomPayto } from "../harness/harness.js";
import {
  createSimpleTestkudosEnvironmentV3,
  makeTestPaymentV2,
  withdrawViaBankV3,
} from "../harness/helpers.js";

/**
 * Run test for refreshe after a payment.
 */
export async function runWalletRefreshTest(t: GlobalTestState) {
  // Set up test environment

  const { walletClient, bankClient, exchange, merchant } =
    await createSimpleTestkudosEnvironmentV3(t);

  // Withdraw digital cash into the wallet.

  await withdrawViaBankV3(t, {
    walletClient,
    bankClient,
    exchange,
    amount: "TESTKUDOS:20",
  });

  await walletClient.call(WalletApiOperation.TestingWaitTransactionsFinal, {});

  const order: TalerMerchantApi.Order = {
    summary: "Buy me!",
    amount: "TESTKUDOS:5",
    fulfillment_url: "taler://fulfillment-success/thx",
  };

  await makeTestPaymentV2(t, { walletClient, merchant, order });
  await walletClient.call(WalletApiOperation.TestingWaitTransactionsFinal, {});

  const txns = await walletClient.call(WalletApiOperation.GetTransactions, {
    includeRefreshes: true,
  });

  console.log(j2s(txns));

  t.assertDeepEqual(txns.transactions.length, 3);

  const refreshListTx = txns.transactions.find(
    (x) => x.type === TransactionType.Refresh,
  );

  t.assertTrue(!!refreshListTx);

  const refreshTx = await walletClient.call(
    WalletApiOperation.GetTransactionById,
    {
      transactionId: refreshListTx.transactionId,
    },
  );

  t.assertDeepEqual(refreshTx.type, TransactionType.Refresh);

  // Now we test a pending refresh operation.
  {
    await exchange.stop();

    const refreshCreatedCond = walletClient.waitForNotificationCond((x) => {
      if (
        x.type === NotificationType.TransactionStateTransition &&
        parseTransactionIdentifier(x.transactionId)?.tag ===
          TransactionType.Refresh
      ) {
        return true;
      }
      return false;
    });

    const refreshDoneCond = walletClient.waitForNotificationCond((x) => {
      if (
        x.type === NotificationType.TransactionStateTransition &&
        parseTransactionIdentifier(x.transactionId)?.tag ===
          TransactionType.Refresh &&
        x.newTxState.major === TransactionMajorState.Done
      ) {
        return true;
      }
      return false;
    });

    const depositGroupResult = await walletClient.client.call(
      WalletApiOperation.CreateDepositGroup,
      {
        amount: "TESTKUDOS:10.5" as AmountString,
        depositPaytoUri: generateRandomPayto("foo"),
      },
    );

    await refreshCreatedCond;

    // Here, the refresh operation should be in a pending state.

    const bal1 = await walletClient.call(WalletApiOperation.GetBalances, {});

    await exchange.start();

    await refreshDoneCond;

    const bal2 = await walletClient.call(WalletApiOperation.GetBalances, {});

    // The refresh operation completing should not change the available balance,
    // as we're accounting pending refreshes towards the available (but not material!) balance.
    t.assertAmountEquals(
      bal1.balances[0].available,
      bal2.balances[0].available,
    );
  }

  const wres = await withdrawViaBankV3(t, {
    walletClient,
    bankClient,
    exchange,
    amount: "TESTKUDOS:20",
  });

  await wres.withdrawalFinishedCond;

  // Test failing a refresh transaction
  {
    await exchange.stop();

    let refreshTransactionId: TransactionIdStr | undefined = undefined;

    const refreshCreatedCond = walletClient.waitForNotificationCond((x) => {
      if (
        x.type === NotificationType.TransactionStateTransition &&
        parseTransactionIdentifier(x.transactionId)?.tag ===
          TransactionType.Refresh
      ) {
        refreshTransactionId = x.transactionId as TransactionIdStr;
        return true;
      }
      return false;
    });

    const depositGroupResult = await walletClient.client.call(
      WalletApiOperation.CreateDepositGroup,
      {
        amount: "TESTKUDOS:10.5" as AmountString,
        depositPaytoUri: generateRandomPayto("foo"),
      },
    );

    await refreshCreatedCond;

    t.assertTrue(!!refreshTransactionId);

    await walletClient.call(WalletApiOperation.FailTransaction, {
      transactionId: refreshTransactionId,
    });

    const txn = await walletClient.call(WalletApiOperation.GetTransactionById, {
      transactionId: refreshTransactionId,
    });

    t.assertDeepEqual(txn.type, TransactionType.Refresh);
    t.assertDeepEqual(txn.txState.major, TransactionMajorState.Failed);

    t.assertTrue(!!refreshTransactionId);
  }
}

runWalletRefreshTest.suites = ["wallet"];