/*
 This file is part of GNU Taler
 (C) 2021-2024 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 { ErrorType, HttpError } from "@gnu-taler/web-util/browser";
import { Fragment, h, VNode } from "preact";
import { useState } from "preact/hooks";
import { Loading } from "../../../components/exception/loading.js";
import { DeleteModal } from "../../../components/modal/index.js";
import { MerchantBackend } from "../../../declaration.js";
import { useInstanceAPI, useInstanceDetails } from "../../../hooks/instance.js";
import { DetailPage } from "./DetailPage.js";
import { HttpStatusCode } from "@gnu-taler/taler-util";
import { useSessionContext } from "../../../context/session.js";

interface Props {
  onUnauthorized: () => VNode;
  onLoadError: (error: HttpError<MerchantBackend.ErrorDetail>) => VNode;
  onUpdate: () => void;
  onNotFound: () => VNode;
  onDelete: () => void;
}

export default function Detail({
  onUpdate,
  onLoadError,
  onUnauthorized,
  onDelete,
  onNotFound,
}: Props): VNode {
  const { state } = useSessionContext();
  const result = useInstanceDetails();
  const [deleting, setDeleting] = useState<boolean>(false);

  const { deleteInstance } = useInstanceAPI();

  if (result.loading) return <Loading />;
  if (!result.ok) {
    if (
      result.type === ErrorType.CLIENT &&
      result.status === HttpStatusCode.Unauthorized
    )
      return onUnauthorized();
    if (
      result.type === ErrorType.CLIENT &&
      result.status === HttpStatusCode.NotFound
    )
      return onNotFound();
    return onLoadError(result);
  }

  return (
    <Fragment>
      <DetailPage
        selected={result.data}
        onUpdate={onUpdate}
        onDelete={() => setDeleting(true)}
      />
      {deleting && (
        <DeleteModal
          element={{ name: result.data.name, id: state.instance }}
          onCancel={() => setDeleting(false)}
          onConfirm={async (): Promise<void> => {
            try {
              await deleteInstance();
              onDelete();
            } catch (error) {
              //FIXME: show message error
            }
            setDeleting(false);
          }}
        />
      )}
    </Fragment>
  );
}