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/*
This file is part of TALER
(C) 2015-2016 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/>
*/
/**
* Page shown to the user to confirm creation
* of a reserve, usually requested by the bank.
*
* @author Florian Dold
*/
import {
AmountJson,
Amounts,
ExchangeListItem,
i18n,
WithdrawUriInfoResponse,
} from "@gnu-taler/taler-util";
import { Fragment, h, VNode } from "preact";
import { useState } from "preact/hooks";
import { LogoHeader } from "../components/LogoHeader";
import { Part } from "../components/Part";
import { SelectList } from "../components/SelectList";
import {
ButtonSuccess,
ButtonWarning,
LinkSuccess,
WalletAction,
} from "../components/styled";
import { useAsyncAsHook } from "../hooks/useAsyncAsHook";
import { amountToString, buildTermsOfServiceState, TermsState } from "../utils";
import * as wxApi from "../wxApi";
import { TermsOfServiceSection } from "./TermsOfServiceSection";
interface Props {
talerWithdrawUri?: string;
}
export interface ViewProps {
withdrawalFee: AmountJson;
exchangeBaseUrl?: string;
amount: AmountJson;
onSwitchExchange: (ex: string) => void;
onWithdraw: () => Promise<void>;
onReview: (b: boolean) => void;
onAccept: (b: boolean) => void;
reviewing: boolean;
reviewed: boolean;
confirmed: boolean;
terms: TermsState;
knownExchanges: ExchangeListItem[];
}
export function View({
withdrawalFee,
exchangeBaseUrl,
knownExchanges,
amount,
onWithdraw,
onSwitchExchange,
terms,
reviewing,
onReview,
onAccept,
reviewed,
confirmed,
}: ViewProps): VNode {
const needsReview = terms.status === "changed" || terms.status === "new";
const [switchingExchange, setSwitchingExchange] = useState<
string | undefined
>(undefined);
const exchanges = knownExchanges.reduce(
(prev, ex) => ({ ...prev, [ex.exchangeBaseUrl]: ex.exchangeBaseUrl }),
{},
);
return (
<WalletAction>
<LogoHeader />
<h2>{i18n.str`Digital cash withdrawal`}</h2>
<section>
<Part
title="Total to withdraw"
text={amountToString(Amounts.sub(amount, withdrawalFee).amount)}
kind="positive"
/>
{Amounts.isNonZero(withdrawalFee) && (
<Fragment>
<Part
title="Chosen amount"
text={amountToString(amount)}
kind="neutral"
/>
<Part
title="Exchange fee"
text={amountToString(withdrawalFee)}
kind="negative"
/>
</Fragment>
)}
{exchangeBaseUrl && (
<Part title="Exchange" text={exchangeBaseUrl} kind="neutral" big />
)}
</section>
{!reviewing && (
<section>
{switchingExchange !== undefined ? (
<Fragment>
<div>
<SelectList
label="Known exchanges"
list={exchanges}
name=""
onChange={onSwitchExchange}
/>
</div>
<LinkSuccess
upperCased
onClick={() => onSwitchExchange(switchingExchange)}
>
{i18n.str`Confirm exchange selection`}
</LinkSuccess>
</Fragment>
) : (
<LinkSuccess upperCased onClick={() => setSwitchingExchange("")}>
{i18n.str`Switch exchange`}
</LinkSuccess>
)}
</section>
)}
<TermsOfServiceSection
reviewed={reviewed}
reviewing={reviewing}
terms={terms}
onAccept={onAccept}
onReview={onReview}
/>
<section>
{(terms.status === "accepted" || (needsReview && reviewed)) && (
<ButtonSuccess
upperCased
disabled={!exchangeBaseUrl || confirmed}
onClick={onWithdraw}
>
{i18n.str`Confirm withdrawal`}
</ButtonSuccess>
)}
{terms.status === "notfound" && (
<ButtonWarning
upperCased
disabled={!exchangeBaseUrl}
onClick={onWithdraw}
>
{i18n.str`Withdraw anyway`}
</ButtonWarning>
)}
</section>
</WalletAction>
);
}
export function WithdrawPageWithParsedURI({
uri,
uriInfo,
}: {
uri: string;
uriInfo: WithdrawUriInfoResponse;
}): VNode {
const [customExchange, setCustomExchange] = useState<string | undefined>(
undefined,
);
// const [errorAccepting, setErrorAccepting] = useState<string | undefined>(
// undefined,
// );
const [reviewing, setReviewing] = useState<boolean>(false);
const [reviewed, setReviewed] = useState<boolean>(false);
const [confirmed, setConfirmed] = useState<boolean>(false);
const knownExchangesHook = useAsyncAsHook(() => wxApi.listExchanges());
const knownExchanges =
!knownExchangesHook || knownExchangesHook.hasError
? []
: knownExchangesHook.response.exchanges;
const withdrawAmount = Amounts.parseOrThrow(uriInfo.amount);
const thisCurrencyExchanges = knownExchanges.filter(
(ex) => ex.currency === withdrawAmount.currency,
);
const exchange: string | undefined =
customExchange ??
uriInfo.defaultExchangeBaseUrl ??
(thisCurrencyExchanges[0]
? thisCurrencyExchanges[0].exchangeBaseUrl
: undefined);
const detailsHook = useAsyncAsHook(async () => {
if (!exchange) throw Error("no default exchange");
const tos = await wxApi.getExchangeTos(exchange, ["text/xml"]);
const tosState = buildTermsOfServiceState(tos);
const info = await wxApi.getExchangeWithdrawalInfo({
exchangeBaseUrl: exchange,
amount: withdrawAmount,
tosAcceptedFormat: ["text/xml"],
});
return { tos: tosState, info };
});
if (!detailsHook) {
return (
<span>
<i18n.Translate>Getting withdrawal details.</i18n.Translate>
</span>
);
}
if (detailsHook.hasError) {
return (
<span>
<i18n.Translate>
Problems getting details: {detailsHook.message}
</i18n.Translate>
</span>
);
}
const details = detailsHook.response;
const onAccept = async (): Promise<void> => {
if (!exchange) return;
try {
await wxApi.setExchangeTosAccepted(exchange, details.tos.version);
setReviewed(true);
} catch (e) {
if (e instanceof Error) {
//FIXME: uncomment this and display error
// setErrorAccepting(e.message);
}
}
};
const onWithdraw = async (): Promise<void> => {
if (!exchange) return;
setConfirmed(true);
console.log("accepting exchange", exchange);
try {
const res = await wxApi.acceptWithdrawal(uri, exchange);
console.log("accept withdrawal response", res);
if (res.confirmTransferUrl) {
document.location.href = res.confirmTransferUrl;
}
} catch (e) {
setConfirmed(false);
}
};
return (
<View
onWithdraw={onWithdraw}
amount={withdrawAmount}
exchangeBaseUrl={exchange}
withdrawalFee={details.info.withdrawFee} //FIXME
terms={detailsHook.response.tos}
onSwitchExchange={setCustomExchange}
knownExchanges={knownExchanges}
confirmed={confirmed}
reviewed={reviewed}
onAccept={onAccept}
reviewing={reviewing}
onReview={setReviewing}
/>
);
}
export function WithdrawPage({ talerWithdrawUri }: Props): VNode {
const uriInfoHook = useAsyncAsHook(() =>
!talerWithdrawUri
? Promise.reject(undefined)
: wxApi.getWithdrawalDetailsForUri({ talerWithdrawUri }),
);
if (!talerWithdrawUri) {
return (
<span>
<i18n.Translate>missing withdraw uri</i18n.Translate>
</span>
);
}
if (!uriInfoHook) {
return (
<span>
<i18n.Translate>Loading...</i18n.Translate>
</span>
);
}
if (uriInfoHook.hasError) {
return (
<span>
<i18n.Translate>
This URI is not valid anymore: {uriInfoHook.message}
</i18n.Translate>
</span>
);
}
return (
<WithdrawPageWithParsedURI
uri={talerWithdrawUri}
uriInfo={uriInfoHook.response}
/>
);
}
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