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path: root/packages/demobank-ui/src/pages/WireTransfer.tsx
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/*
 This file is part of GNU Taler
 (C) 2022-2024 Taler Systems S.A.

 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/>
 */
import {
  Amounts,
  HttpStatusCode,
  TalerError,
  assertUnreachable,
} from "@gnu-taler/taler-util";
import {
  Loading,
  notifyInfo,
  useTranslationContext,
} from "@gnu-taler/web-util/browser";
import { Fragment, VNode, h } from "preact";
import { ErrorLoadingWithDebug } from "../components/ErrorLoadingWithDebug.js";
import { useAccountDetails } from "../hooks/access.js";
import { useBackendState } from "../hooks/backend.js";
import { LoginForm } from "./LoginForm.js";
import { PaytoWireTransferForm } from "./PaytoWireTransferForm.js";
import { RouteDefinition } from "../route.js";

export function WireTransfer({
  toAccount,
  withSubject,
  withAmount,
  onAuthorizationRequired,
  routeCancel,
  routeHere,
  onSuccess,
}: {
  onSuccess?: () => void;
  routeHere: RouteDefinition<{
    account?: string,
    subject?: string,
    amount?: string,
  }>;
  toAccount?: string;
  withSubject?: string,
  withAmount?: string,
  routeCancel?: RouteDefinition;
  onAuthorizationRequired: () => void;
}): VNode {
  const { i18n } = useTranslationContext();
  const r = useBackendState();
  const account = r.state.status !== "loggedOut" ? r.state.username : "admin";
  const result = useAccountDetails(account);

  if (!result) {
    return <Loading />;
  }
  if (result instanceof TalerError) {
    return <ErrorLoadingWithDebug error={result} />;
  }
  if (result.type === "fail") {
    switch (result.case) {
      case HttpStatusCode.Unauthorized:
        return <LoginForm currentUser={account} />;
      case HttpStatusCode.NotFound:
        return <LoginForm currentUser={account} />;
      default:
        assertUnreachable(result);
    }
  }
  const { body: data } = result;

  const balance = Amounts.parseOrThrow(data.balance.amount);
  const balanceIsDebit = data.balance.credit_debit_indicator == "debit";

  const debitThreshold = Amounts.parseOrThrow(data.debit_threshold);
  const limit = balanceIsDebit
    ? Amounts.sub(debitThreshold, balance).amount
    : Amounts.add(balance, debitThreshold).amount;
  if (!balance) return <Fragment />;
  return (
    <PaytoWireTransferForm
      title={i18n.str`Make a wire transfer`}
      withAccount={toAccount}
      withAmount={withAmount}
      withSubject={withSubject}
      routeHere={routeHere}
      limit={limit}
      onAuthorizationRequired={onAuthorizationRequired}
      onSuccess={() => {
        notifyInfo(i18n.str`Wire transfer created!`);
        if (onSuccess) onSuccess();
      }}
      routeCancel={routeCancel}
    />
  );
}