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authorFlorian Dold <florian.dold@gmail.com>2020-08-03 13:00:48 +0530
committerFlorian Dold <florian.dold@gmail.com>2020-08-03 13:01:05 +0530
commitffd2a62c3f7df94365980302fef3bc3376b48182 (patch)
tree270af6f16b4cc7f5da2afdba55c8bc9dbea5eca5 /src/operations/balance.ts
parentaa481e42675fb7c4dcbbeec0ba1c61e1953b9596 (diff)
downloadwallet-core-ffd2a62c3f7df94365980302fef3bc3376b48182.tar.xz
modularize repo, use pnpm, improve typechecking
Diffstat (limited to 'src/operations/balance.ts')
-rw-r--r--src/operations/balance.ts153
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diff --git a/src/operations/balance.ts b/src/operations/balance.ts
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-/*
- This file is part of GNU Taler
- (C) 2019 GNUnet e.V.
-
- 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 { BalancesResponse } from "../types/walletTypes";
-import { TransactionHandle } from "../util/query";
-import { InternalWalletState } from "./state";
-import { Stores, CoinStatus } from "../types/dbTypes";
-import * as Amounts from "../util/amounts";
-import { AmountJson } from "../util/amounts";
-import { Logger } from "../util/logging";
-
-const logger = new Logger("withdraw.ts");
-
-interface WalletBalance {
- available: AmountJson;
- pendingIncoming: AmountJson;
- pendingOutgoing: AmountJson;
-}
-
-/**
- * Get balance information.
- */
-export async function getBalancesInsideTransaction(
- ws: InternalWalletState,
- tx: TransactionHandle,
-): Promise<BalancesResponse> {
- const balanceStore: Record<string, WalletBalance> = {};
-
- /**
- * Add amount to a balance field, both for
- * the slicing by exchange and currency.
- */
- const initBalance = (currency: string): WalletBalance => {
- const b = balanceStore[currency];
- if (!b) {
- balanceStore[currency] = {
- available: Amounts.getZero(currency),
- pendingIncoming: Amounts.getZero(currency),
- pendingOutgoing: Amounts.getZero(currency),
- };
- }
- return balanceStore[currency];
- };
-
- // Initialize balance to zero, even if we didn't start withdrawing yet.
- await tx.iter(Stores.reserves).forEach((r) => {
- const b = initBalance(r.currency);
- if (!r.initialWithdrawalStarted) {
- b.pendingIncoming = Amounts.add(
- b.pendingIncoming,
- r.initialDenomSel.totalCoinValue,
- ).amount;
- }
- });
-
- await tx.iter(Stores.coins).forEach((c) => {
- // Only count fresh coins, as dormant coins will
- // already be in a refresh session.
- if (c.status === CoinStatus.Fresh) {
- const b = initBalance(c.currentAmount.currency);
- b.available = Amounts.add(b.available, c.currentAmount).amount;
- }
- });
-
- await tx.iter(Stores.refreshGroups).forEach((r) => {
- // Don't count finished refreshes, since the refresh already resulted
- // in coins being added to the wallet.
- if (r.timestampFinished) {
- return;
- }
- for (let i = 0; i < r.oldCoinPubs.length; i++) {
- const session = r.refreshSessionPerCoin[i];
- if (session) {
- const b = initBalance(session.amountRefreshOutput.currency);
- // We are always assuming the refresh will succeed, thus we
- // report the output as available balance.
- b.available = Amounts.add(session.amountRefreshOutput).amount;
- }
- }
- });
-
- await tx.iter(Stores.withdrawalGroups).forEach((wds) => {
- if (wds.timestampFinish) {
- return;
- }
- const b = initBalance(wds.denomsSel.totalWithdrawCost.currency);
- b.pendingIncoming = Amounts.add(
- b.pendingIncoming,
- wds.denomsSel.totalCoinValue,
- ).amount;
- });
-
- const balancesResponse: BalancesResponse = {
- balances: [],
- };
-
- Object.keys(balanceStore)
- .sort()
- .forEach((c) => {
- const v = balanceStore[c];
- balancesResponse.balances.push({
- available: Amounts.stringify(v.available),
- pendingIncoming: Amounts.stringify(v.pendingIncoming),
- pendingOutgoing: Amounts.stringify(v.pendingOutgoing),
- hasPendingTransactions: false,
- requiresUserInput: false,
- });
- });
-
- return balancesResponse;
-}
-
-/**
- * Get detailed balance information, sliced by exchange and by currency.
- */
-export async function getBalances(
- ws: InternalWalletState,
-): Promise<BalancesResponse> {
- logger.trace("starting to compute balance");
-
- const wbal = await ws.db.runWithReadTransaction(
- [
- Stores.coins,
- Stores.refreshGroups,
- Stores.reserves,
- Stores.purchases,
- Stores.withdrawalGroups,
- ],
- async (tx) => {
- return getBalancesInsideTransaction(ws, tx);
- },
- );
-
- logger.trace("finished computing wallet balance");
-
- return wbal;
-}