/*
 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/>
 */

/**
 *
 * @author Nic Eigel
 * @author Sebastian Javier Marchano (sebasjm)
 */

import { useTranslationContext } from "@gnu-taler/web-util/browser";
import { ComponentChildren, Fragment, h, VNode } from "preact";
import { useCallback,  useState } from "preact/hooks";
import { useBackendContext, useBackendTokenContext } from "../../context/backend.js";
import { NotificationCard } from "../../components/menu/index.js";
import { Notification } from "../../utils/types.js";
import { useBackendToken } from "../../hooks/backend.js";
import { Route } from "preact-router";
import { Paths, Redirect } from "../../InstanceRoutes.js";

export function LoginPage(): VNode {
  const [token, setToken] = useState("");
  const [notif, setNotif] = useState<Notification | undefined>(undefined);
  const { i18n } = useTranslationContext();
  const doLogin = useCallback(async function doLoginImpl() {

    const result = useBackendToken();
    if (!result.ok) {
    }
    if (result.ok) {
      //TODO fixme
      const { token } = useBackendTokenContext();
     /* return (
        <Route path="/" component={Redirect} to={Paths.key_figures}/>
      );*/
    } else {
      setNotif({
        message: "Your password is incorrect",
        type: "ERROR",
      });
    }
  }, [token]);

  return (
    <Route path="/" component={Redirect} to={Paths.key_figures}/>
  );

  return (
    <div class="columns is-centered" style={{ margin: "auto" }}>
    <div class="column is-two-thirds ">
      <div class="modal-card" style={{ width: "100%", margin: 0 }}>
        <header
          class="modal-card-head"
          style={{ border: "1px solid", borderBottom: 0 }}
        >
          <p class="modal-card-title">{i18n.str`Token required`}</p>
        </header>
        <section
          class="modal-card-body"
          style={{ border: "1px solid", borderTop: 0, borderBottom: 0 }}
        >

          <p>
            <i18n.Translate>Need the access token for the API.</i18n.Translate>
          </p>
          <div class="field is-horizontal">
            <div class="field-label is-normal">
              <label class="label">
                <i18n.Translate>Access Token</i18n.Translate>
              </label>
            </div>
            <div class="field-body">
              <div class="field">
                <p class="control is-expanded">
                  <input
                    class="input"
                    type="password"
                    placeholder={"current access token"}
                    name="token"
                    onKeyPress={(e) =>
                      e.keyCode === 13
                        ? doLogin()
                        : null
                    }
                    value={token}
                    onInput={(e): void => setToken(e?.currentTarget.value)}
                  />
                </p>
              </div>
            </div>
          </div>
        </section>
        <footer
          class="modal-card-foot "
          style={{
            justifyContent: "flex-end",
            border: "1px solid",
            borderTop: 0,
          }}
        >
          <AsyncButton
            onClick={() => doLogin()}
          >
            <i18n.Translate>Confirm</i18n.Translate>
          </AsyncButton>
        </footer>
      </div>
    </div>
  </div>);


  return (<Fragment>
      <NotificationCard notification={notif} />
      <div class="columns is-centered" style={{ margin: "auto" }}>
        <div class="column is-two-thirds ">
          <div class="modal-card" style={{ width: "100%", margin: 0 }}>
            <header
              class="modal-card-head"
              style={{ border: "1px solid", borderBottom: 0 }}
            >
              <p class="modal-card-title">{i18n.str`Login required`}</p>
            </header>
            <section
              class="modal-card-body"
              style={{ border: "1px solid", borderTop: 0, borderBottom: 0 }}
            >
              <i18n.Translate>Please enter your access token.</i18n.Translate>

              <div class="field is-horizontal">
                <div class="field-label is-normal">
                  <label class="label">
                    <i18n.Translate>Access Token</i18n.Translate>
                  </label>
                </div>
                <div class="field-body">

                  <div class="field">
                    <p class="control is-expanded">
                      <input
                        class="input"
                        type="password"
                        placeholder={"current access token"}
                        name="token"
                        onKeyPress={(e) =>
                          e.keyCode === 13
                            ? doLogin()
                            : null
                        }
                        value={token}
                        onInput={(e): void => setToken(e?.currentTarget.value)}
                      />
                    </p>
                  </div>
                </div>
              </div>
            </section>
            <footer
              class="modal-card-foot "
              style={{
                justifyContent: "space-between",
                border: "1px solid",
                borderTop: 0,
              }}
            >
              <div />
              <AsyncButton
                type="is-info"
                onClick={doLogin}
              >
                <i18n.Translate>Confirm</i18n.Translate>
              </AsyncButton>

            </footer>
          </div>
        </div>
      </div>
    </Fragment>

  );
}

function AsyncButton({ onClick, disabled, type = "", children }: {
  type?: string,
  disabled?: boolean,
  onClick: () => Promise<void>,
  children: ComponentChildren
}): VNode {
  const [running, setRunning] = useState(false);
  return <button class={"button " + type} disabled={disabled || running} onClick={() => {
    setRunning(true);
    onClick().then(() => {
      setRunning(false);
    }).catch(() => {
      setRunning(false);
    });
  }}>
    {children}
  </button>;
}


