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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 { WalletBalance, WalletBalanceEntry } from "../types/walletTypes";
import { Database } from "../util/query";
import { InternalWalletState } from "./state";
import { Stores, TipRecord, 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");
/**
* Get detailed balance information, sliced by exchange and by currency.
*/
export async function getBalances(
ws: InternalWalletState,
): Promise<WalletBalance> {
logger.trace("starting to compute balance");
/**
* Add amount to a balance field, both for
* the slicing by exchange and currency.
*/
function addTo(
balance: WalletBalance,
field: keyof WalletBalanceEntry,
amount: AmountJson,
exchange: string,
): void {
const z = Amounts.getZero(amount.currency);
const balanceIdentity = {
available: z,
paybackAmount: z,
pendingIncoming: z,
pendingPayment: z,
pendingIncomingDirty: z,
pendingIncomingRefresh: z,
pendingIncomingWithdraw: z,
};
let entryCurr = balance.byCurrency[amount.currency];
if (!entryCurr) {
balance.byCurrency[amount.currency] = entryCurr = {
...balanceIdentity,
};
}
let entryEx = balance.byExchange[exchange];
if (!entryEx) {
balance.byExchange[exchange] = entryEx = { ...balanceIdentity };
}
entryCurr[field] = Amounts.add(entryCurr[field], amount).amount;
entryEx[field] = Amounts.add(entryEx[field], amount).amount;
}
const balanceStore = {
byCurrency: {},
byExchange: {},
};
await ws.db.runWithReadTransaction(
[Stores.coins, Stores.refreshGroups, Stores.reserves, Stores.purchases, Stores.withdrawalSession],
async tx => {
await tx.iter(Stores.coins).forEach(c => {
if (c.suspended) {
return;
}
if (c.status === CoinStatus.Fresh) {
addTo(balanceStore, "available", c.currentAmount, c.exchangeBaseUrl);
}
});
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) {
addTo(
balanceStore,
"pendingIncoming",
session.amountRefreshOutput,
session.exchangeBaseUrl,
);
addTo(
balanceStore,
"pendingIncomingRefresh",
session.amountRefreshOutput,
session.exchangeBaseUrl,
);
}
}
});
await tx.iter(Stores.withdrawalSession).forEach(wds => {
let w = wds.totalCoinValue;
for (let i = 0; i < wds.planchets.length; i++) {
if (wds.withdrawn[i]) {
const p = wds.planchets[i];
if (p) {
w = Amounts.sub(w, p.coinValue).amount;
}
}
}
addTo(
balanceStore,
"pendingIncoming",
w,
wds.exchangeBaseUrl,
);
});
await tx.iter(Stores.purchases).forEach(t => {
if (t.timestampFirstSuccessfulPay) {
return;
}
for (const c of t.payReq.coins) {
addTo(
balanceStore,
"pendingPayment",
Amounts.parseOrThrow(c.contribution),
c.exchange_url,
);
}
});
},
);
logger.trace("computed balances:", balanceStore);
return balanceStore;
}
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