/*
 This file is part of GNU Taler
 (C) 2022 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 {
  HttpStatusCode,
  Logger,
  WithdrawUriResult,
} from "@gnu-taler/taler-util";
import { ErrorType, useTranslationContext } from "@gnu-taler/web-util/browser";
import { Fragment, VNode, h } from "preact";
import { Loading } from "../components/Loading.js";
import { useWithdrawalDetails } from "../hooks/access.js";
import { notifyInfo } from "../hooks/notification.js";
import { handleNotOkResult } from "./HomePage.js";
import { QrCodeSection } from "./QrCodeSection.js";
import { WithdrawalConfirmationQuestion } from "./WithdrawalConfirmationQuestion.js";

const logger = new Logger("WithdrawalQRCode");

interface Props {
  withdrawUri: WithdrawUriResult;
  onAborted: () => void;
  onConfirmed: () => void;
  onLoadNotOk: () => void;
}
/**
 * Offer the QR code (and a clickable taler://-link) to
 * permit the passing of exchange and reserve details to
 * the bank.  Poll the backend until such operation is done.
 */
export function WithdrawalQRCode({
  withdrawUri,
  onConfirmed,
  onAborted,
  onLoadNotOk,
}: Props): VNode {
  const { i18n } = useTranslationContext();
  const result = useWithdrawalDetails(withdrawUri.withdrawalOperationId);
  if (!result.ok) {
    if (result.loading) {
      return <Loading />;
    }
    if (
      result.type === ErrorType.CLIENT &&
      result.status === HttpStatusCode.NotFound
    ) {
      return <div>operation not found</div>;
    }
    onLoadNotOk();
    return handleNotOkResult(i18n)(result);
  }
  const { data } = result;

  logger.trace("withdrawal status", data);
  if (data.aborted || data.confirmation_done) {
    // signal that this withdrawal is aborted
    // will redirect to account info
    notifyInfo(i18n.str`Operation completed`);
    onAborted();
    return <Loading />;
  }

  if (!data.selection_done) {
    return (
      <QrCodeSection
        withdrawUri={withdrawUri}
        onAborted={() => {
          notifyInfo(i18n.str`Operation canceled`);
          onAborted();
        }}
      />
    );
  }

  // Wallet POSTed the withdrawal details!  Ask the
  // user to authorize the operation (here CAPTCHA).
  return (
    <WithdrawalConfirmationQuestion
      withdrawUri={withdrawUri}
      onConfirmed={() => {
        notifyInfo(i18n.str`Operation confirmed`);
        onConfirmed();
      }}
      onAborted={() => {
        notifyInfo(i18n.str`Operation canceled`);
        onAborted();
      }}
    />
  );
}
