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|
/*
This file is part of TALER
(C) 2015 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 entering
* a contract.
*/
/**
* Imports.
*/
import {
AmountJson,
AmountLike,
Amounts,
ConfirmPayResult,
ConfirmPayResultDone,
ConfirmPayResultType,
ContractTerms,
NotificationType,
PreparePayResult,
PreparePayResultType,
Product,
} from "@gnu-taler/taler-util";
import { OperationFailedError } from "@gnu-taler/taler-wallet-core";
import { Fragment, h, VNode } from "preact";
import { useEffect, useState } from "preact/hooks";
import { ErrorMessage } from "../components/ErrorMessage";
import { Loading } from "../components/Loading";
import { LoadingError } from "../components/LoadingError";
import { LogoHeader } from "../components/LogoHeader";
import { Part } from "../components/Part";
import { QR } from "../components/QR";
import {
ButtonSuccess,
Link,
LinkPrimary,
LinkSuccess,
SmallLightText,
SuccessBox,
WalletAction,
WarningBox,
} from "../components/styled";
import { useTranslationContext } from "../context/translation";
import { useAsyncAsHook } from "../hooks/useAsyncAsHook";
import * as wxApi from "../wxApi";
interface Props {
talerPayUri?: string;
goToWalletManualWithdraw: (currency?: string) => void;
goBack: () => void;
}
const doPayment = async (
payStatus: PreparePayResult,
): Promise<ConfirmPayResultDone> => {
if (payStatus.status !== "payment-possible") {
throw Error(`invalid state: ${payStatus.status}`);
}
const proposalId = payStatus.proposalId;
const res = await wxApi.confirmPay(proposalId, undefined);
if (res.type !== ConfirmPayResultType.Done) {
throw Error("payment pending");
}
const fu = res.contractTerms.fulfillment_url;
if (fu) {
document.location.href = fu;
}
return res;
};
export function PayPage({
talerPayUri,
goToWalletManualWithdraw,
goBack,
}: Props): VNode {
const { i18n } = useTranslationContext();
const [payResult, setPayResult] = useState<ConfirmPayResult | undefined>(
undefined,
);
const [payErrMsg, setPayErrMsg] = useState<
OperationFailedError | string | undefined
>(undefined);
const hook = useAsyncAsHook(async () => {
if (!talerPayUri) throw Error("Missing pay uri");
const payStatus = await wxApi.preparePay(talerPayUri);
const balance = await wxApi.getBalance();
return { payStatus, balance };
}, [NotificationType.CoinWithdrawn]);
if (!hook) {
return <Loading />;
}
if (hook.hasError) {
return (
<LoadingError
title={<i18n.Translate>Could not load pay status</i18n.Translate>}
error={hook}
/>
);
}
const foundBalance = hook.response.balance.balances.find(
(b) =>
Amounts.parseOrThrow(b.available).currency ===
Amounts.parseOrThrow(hook.response.payStatus.amountRaw).currency,
);
const foundAmount = foundBalance
? Amounts.parseOrThrow(foundBalance.available)
: undefined;
const onClick = async (): Promise<void> => {
try {
const res = await doPayment(hook.response.payStatus);
setPayResult(res);
} catch (e) {
console.error(e);
if (e instanceof Error) {
setPayErrMsg(e.message);
}
}
};
return (
<PaymentRequestView
uri={talerPayUri!}
payStatus={hook.response.payStatus}
payResult={payResult}
onClick={onClick}
goToWalletManualWithdraw={goToWalletManualWithdraw}
balance={foundAmount}
/>
);
}
export interface PaymentRequestViewProps {
payStatus: PreparePayResult;
payResult?: ConfirmPayResult;
onClick: () => void;
payErrMsg?: string;
uri: string;
goToWalletManualWithdraw: () => void;
balance: AmountJson | undefined;
}
export function PaymentRequestView({
uri,
payStatus,
payResult,
onClick,
goToWalletManualWithdraw,
balance,
}: PaymentRequestViewProps): VNode {
const { i18n } = useTranslationContext();
let totalFees: AmountJson = Amounts.getZero(payStatus.amountRaw);
const contractTerms: ContractTerms = payStatus.contractTerms;
useEffect(() => {
if (
payStatus.status === PreparePayResultType.AlreadyConfirmed &&
payStatus.paid
) {
const fu = payStatus.contractTerms.fulfillment_url;
if (fu) {
setTimeout(() => {
document.location.href = fu;
}, 3000);
}
}
});
if (!contractTerms) {
return (
<ErrorMessage
title={
<i18n.Translate>
Could not load contract terms from merchant or wallet backend.
</i18n.Translate>
}
/>
);
}
if (payStatus.status === PreparePayResultType.PaymentPossible) {
const amountRaw = Amounts.parseOrThrow(payStatus.amountRaw);
const amountEffective: AmountJson = Amounts.parseOrThrow(
payStatus.amountEffective,
);
totalFees = Amounts.sub(amountEffective, amountRaw).amount;
}
function Alternative(): VNode {
const [showQR, setShowQR] = useState<boolean>(false);
const privateUri =
payStatus.status !== PreparePayResultType.AlreadyConfirmed
? `${uri}&n=${payStatus.noncePriv}`
: uri;
if (!uri) return <Fragment />;
return (
<section>
<LinkSuccess upperCased onClick={() => setShowQR((qr) => !qr)}>
{!showQR ? (
<i18n.Translate>Pay with a mobile phone</i18n.Translate>
) : (
<i18n.Translate>Hide QR</i18n.Translate>
)}
</LinkSuccess>
{showQR && (
<div>
<QR text={privateUri} />
<i18n.Translate>
Scan the QR code or
<a href={privateUri}>
<i18n.Translate>click here</i18n.Translate>
</a>
</i18n.Translate>
</div>
)}
</section>
);
}
function ButtonsSection(): VNode {
if (payResult) {
if (payResult.type === ConfirmPayResultType.Pending) {
return (
<section>
<div>
<p>
<i18n.Translate>Processing</i18n.Translate>...
</p>
</div>
</section>
);
}
return <Fragment />;
}
if (payStatus.status === PreparePayResultType.PaymentPossible) {
return (
<Fragment>
<section>
<ButtonSuccess upperCased onClick={onClick}>
<i18n.Translate>
Pay {amountToString(payStatus.amountEffective)}
</i18n.Translate>
</ButtonSuccess>
</section>
<Alternative />
</Fragment>
);
}
if (payStatus.status === PreparePayResultType.InsufficientBalance) {
return (
<Fragment>
<section>
{balance ? (
<WarningBox>
<i18n.Translate>
Your balance of {amountToString(balance)} is not enough to pay
for this purchase
</i18n.Translate>
</WarningBox>
) : (
<WarningBox>
<i18n.Translate>
Your balance is not enough to pay for this purchase.
</i18n.Translate>
</WarningBox>
)}
</section>
<section>
<ButtonSuccess upperCased onClick={goToWalletManualWithdraw}>
<i18n.Translate>Withdraw digital cash</i18n.Translate>
</ButtonSuccess>
</section>
<Alternative />
</Fragment>
);
}
if (payStatus.status === PreparePayResultType.AlreadyConfirmed) {
return (
<Fragment>
<section>
{payStatus.paid && contractTerms.fulfillment_message && (
<Part
title={<i18n.Translate>Merchant message</i18n.Translate>}
text={contractTerms.fulfillment_message}
kind="neutral"
/>
)}
</section>
{!payStatus.paid && <Alternative />}
</Fragment>
);
}
return <span />;
}
return (
<WalletAction>
<LogoHeader />
<h2>
<i18n.Translate>Digital cash payment</i18n.Translate>
</h2>
{payStatus.status === PreparePayResultType.AlreadyConfirmed &&
(payStatus.paid ? (
payStatus.contractTerms.fulfillment_url ? (
<SuccessBox>
<i18n.Translate>
Already paid, you are going to be redirected to{" "}
<a href={payStatus.contractTerms.fulfillment_url}>
{payStatus.contractTerms.fulfillment_url}
</a>
</i18n.Translate>
</SuccessBox>
) : (
<SuccessBox>
<i18n.Translate>Already paid</i18n.Translate>
</SuccessBox>
)
) : (
<WarningBox>
<i18n.Translate>Already claimed</i18n.Translate>
</WarningBox>
))}
{payResult && payResult.type === ConfirmPayResultType.Done && (
<SuccessBox>
<h3>
<i18n.Translate>Payment complete</i18n.Translate>
</h3>
<p>
{!payResult.contractTerms.fulfillment_message ? (
payResult.contractTerms.fulfillment_url ? (
<i18n.Translate>
You are going to be redirected to $
{payResult.contractTerms.fulfillment_url}
</i18n.Translate>
) : (
<i18n.Translate>You can close this page.</i18n.Translate>
)
) : (
payResult.contractTerms.fulfillment_message
)}
</p>
</SuccessBox>
)}
<section>
{payStatus.status !== PreparePayResultType.InsufficientBalance &&
Amounts.isNonZero(totalFees) && (
<Part
big
title={<i18n.Translate>Total to pay</i18n.Translate>}
text={amountToString(payStatus.amountEffective)}
kind="negative"
/>
)}
<Part
big
title={<i18n.Translate>Purchase amount</i18n.Translate>}
text={amountToString(payStatus.amountRaw)}
kind="neutral"
/>
{Amounts.isNonZero(totalFees) && (
<Fragment>
<Part
big
title={<i18n.Translate>Fee</i18n.Translate>}
text={amountToString(totalFees)}
kind="negative"
/>
</Fragment>
)}
<Part
title={<i18n.Translate>Merchant</i18n.Translate>}
text={contractTerms.merchant.name}
kind="neutral"
/>
<Part
title={<i18n.Translate>Purchase</i18n.Translate>}
text={contractTerms.summary}
kind="neutral"
/>
{contractTerms.order_id && (
<Part
title={<i18n.Translate>Receipt</i18n.Translate>}
text={`#${contractTerms.order_id}`}
kind="neutral"
/>
)}
{contractTerms.products && contractTerms.products.length > 0 && (
<ProductList products={contractTerms.products} />
)}
</section>
<ButtonsSection />
<section>
<Link upperCased>
<i18n.Translate>Cancel</i18n.Translate>
</Link>
</section>
</WalletAction>
);
}
function ProductList({ products }: { products: Product[] }): VNode {
const { i18n } = useTranslationContext();
return (
<Fragment>
<SmallLightText style={{ margin: ".5em" }}>
<i18n.Translate>List of products</i18n.Translate>
</SmallLightText>
<dl>
{products.map((p, i) => {
if (p.price) {
const pPrice = Amounts.parseOrThrow(p.price);
return (
<div key={i} style={{ display: "flex", textAlign: "left" }}>
<div>
<img
src={p.image ? p.image : undefined}
style={{ width: 32, height: 32 }}
/>
</div>
<div>
<dt>
{p.quantity ?? 1} x {p.description}{" "}
<span style={{ color: "gray" }}>
{Amounts.stringify(pPrice)}
</span>
</dt>
<dd>
<b>
{Amounts.stringify(
Amounts.mult(pPrice, p.quantity ?? 1).amount,
)}
</b>
</dd>
</div>
</div>
);
}
return (
<div key={i} style={{ display: "flex", textAlign: "left" }}>
<div>
<img src={p.image} style={{ width: 32, height: 32 }} />
</div>
<div>
<dt>
{p.quantity ?? 1} x {p.description}
</dt>
<dd>
<i18n.Translate>Total</i18n.Translate>
{` `}
{p.price ? (
`${Amounts.stringifyValue(
Amounts.mult(
Amounts.parseOrThrow(p.price),
p.quantity ?? 1,
).amount,
)} ${p}`
) : (
<i18n.Translate>free</i18n.Translate>
)}
</dd>
</div>
</div>
);
})}
</dl>
</Fragment>
);
}
function amountToString(text: AmountLike): string {
const aj = Amounts.jsonifyAmount(text);
const amount = Amounts.stringifyValue(aj, 2);
return `${amount} ${aj.currency}`;
}
|