/*
 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 { Amounts, HttpStatusCode, parsePaytoUri } from "@gnu-taler/taler-util";
import {
  ErrorType,
  HttpResponsePaginated,
  useTranslationContext,
} from "@gnu-taler/web-util/lib/index.browser";
import { Fragment, VNode, h } from "preact";
import { Transactions } from "../components/Transactions/index.js";
import { useBackendContext } from "../context/backend.js";
import { notifyError } from "../context/pageState.js";
import { useAccountDetails } from "../hooks/access.js";
import { LoginForm } from "./LoginForm.js";
import { PaymentOptions } from "./PaymentOptions.js";

interface Props {
  account: string;
  onLoadNotOk: <T>(
    error: HttpResponsePaginated<T, SandboxBackend.SandboxError>,
  ) => VNode;
}
/**
 * Query account information and show QR code if there is pending withdrawal
 */
export function AccountPage({ account, onLoadNotOk }: Props): VNode {
  const result = useAccountDetails(account);
  const backend = useBackendContext();
  const { i18n } = useTranslationContext();

  if (!result.ok) {
    if (result.loading || result.type === ErrorType.TIMEOUT) {
      return onLoadNotOk(result);
    }
    //logout if there is any error, not if loading
    backend.logOut();
    if (result.status === HttpStatusCode.NotFound) {
      notifyError({
        title: i18n.str`Username or account label "${account}" not found`,
      });
      return <LoginForm />;
    }
    return onLoadNotOk(result);
  }

  const { data } = result;
  const balance = Amounts.parseOrThrow(data.balance.amount);
  const debitThreshold = Amounts.parseOrThrow(data.debitThreshold);
  const payto = parsePaytoUri(data.paytoUri);
  if (!payto || !payto.isKnown || payto.targetType !== "iban") {
    return (
      <div>Payto from server is not valid &quot;{data.paytoUri}&quot;</div>
    );
  }
  const accountNumber = payto.iban;
  const balanceIsDebit = data.balance.credit_debit_indicator == "debit";
  const limit = balanceIsDebit
    ? Amounts.sub(debitThreshold, balance).amount
    : Amounts.add(balance, debitThreshold).amount;
  return (
    <Fragment>
      <div>
        <h1 class="nav welcome-text">
          <i18n.Translate>
            Welcome, {accountNumber ? `${account} (${accountNumber})` : account}
            !
          </i18n.Translate>
        </h1>
      </div>

      <section id="assets">
        <div class="asset-summary">
          <h2>{i18n.str`Bank account balance`}</h2>
          {!balance ? (
            <div class="large-amount" style={{ color: "gray" }}>
              Waiting server response...
            </div>
          ) : (
            <div class="large-amount amount">
              {balanceIsDebit ? <b>-</b> : null}
              <span class="value">{`${Amounts.stringifyValue(balance)}`}</span>
              &nbsp;
              <span class="currency">{`${balance.currency}`}</span>
            </div>
          )}
        </div>
      </section>
      <section id="payments">
        <div class="payments">
          <h2>{i18n.str`Payments`}</h2>
          <PaymentOptions limit={limit} />
        </div>
      </section>

      <section style={{ marginTop: "2em" }}>
        <div class="active">
          <h3>{i18n.str`Latest transactions`}</h3>
          <Transactions account={account} />
        </div>
      </section>
    </Fragment>
  );
}