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/*
This file is part of TALER
(C) 2016 GNUnet e.V.
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.
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
TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
import {
Amounts,
BalancesResponse,
Balance, i18n, AmountJson, amountFractionalBase
} from "@gnu-taler/taler-util";
import { Component, JSX } from "preact";
import { PageLink, renderAmount } from "../renderHtml";
import * as wxApi from "../wxApi";
/**
* Render an amount as a large number with a small currency symbol.
*/
function bigAmount(amount: AmountJson): JSX.Element {
const v = amount.value + amount.fraction / amountFractionalBase;
return (
<span>
<span style={{ fontSize: "5em", display: "block" }}>{v}</span>{" "}
<span>{amount.currency}</span>
</span>
);
}
function EmptyBalanceView(): JSX.Element {
return (
<p><i18n.Translate>
You have no balance to show. Need some{" "}
<PageLink pageName="/welcome">help</PageLink> getting started?
</i18n.Translate></p>
);
}
export class BalancePage extends Component<any, any> {
private balance?: BalancesResponse;
private gotError = false;
private canceler: (() => void) | undefined = undefined;
private unmount = false;
private updateBalanceRunning = false;
componentWillMount(): void {
this.canceler = wxApi.onUpdateNotification(() => this.updateBalance());
this.updateBalance();
}
componentWillUnmount(): void {
console.log("component WalletBalanceView will unmount");
if (this.canceler) {
this.canceler();
}
this.unmount = true;
}
async updateBalance(): Promise<void> {
if (this.updateBalanceRunning) {
return;
}
this.updateBalanceRunning = true;
let balance: BalancesResponse;
try {
balance = await wxApi.getBalance();
} catch (e) {
if (this.unmount) {
return;
}
this.gotError = true;
console.error("could not retrieve balances", e);
this.setState({});
return;
} finally {
this.updateBalanceRunning = false;
}
if (this.unmount) {
return;
}
this.gotError = false;
console.log("got balance", balance);
this.balance = balance;
this.setState({});
}
formatPending(entry: Balance): JSX.Element {
let incoming: JSX.Element | undefined;
let payment: JSX.Element | undefined;
const available = Amounts.parseOrThrow(entry.available);
const pendingIncoming = Amounts.parseOrThrow(entry.pendingIncoming);
const pendingOutgoing = Amounts.parseOrThrow(entry.pendingOutgoing);
console.log(
"available: ",
entry.pendingIncoming ? renderAmount(entry.available) : null
);
console.log(
"incoming: ",
entry.pendingIncoming ? renderAmount(entry.pendingIncoming) : null
);
if (!Amounts.isZero(pendingIncoming)) {
incoming = (
<span><i18n.Translate>
<span style={{ color: "darkgreen" }}>
{"+"}
{renderAmount(entry.pendingIncoming)}
</span>{" "}
incoming
</i18n.Translate></span>
);
}
const l = [incoming, payment].filter((x) => x !== undefined);
if (l.length === 0) {
return <span />;
}
if (l.length === 1) {
return <span>({l})</span>;
}
return (
<span>
({l[0]}, {l[1]})
</span>
);
}
render(): JSX.Element {
const wallet = this.balance;
if (this.gotError) {
return (
<div class="balance">
<p>{i18n.str`Error: could not retrieve balance information.`}</p>
<p>
Click <PageLink pageName="welcome.html">here</PageLink> for help and
diagnostics.
</p>
</div>
);
}
if (!wallet) {
return <span></span>;
}
const listing = wallet.balances.map((entry) => {
const av = Amounts.parseOrThrow(entry.available);
return (
<p key={av.currency}>
{bigAmount(av)} {this.formatPending(entry)}
</p>
);
});
return listing.length > 0 ? (
<div class="balance">{listing}</div>
) : (
<EmptyBalanceView />
);
}
}
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