wallet-core/src/webex/pages/reset-required.tsx

/*
 This file is part of TALER
 (C) 2017 GNUnet e.V.

 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.

 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
 TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
 */


/**
 * Page to inform the user when a database reset is required.
 *
 * @author Florian Dold
 */

import * as React from "react";
import * as ReactDOM from "react-dom";

import * as wxApi from "../wxApi";

class State {
  /**
   * Did the user check the confirmation check box?
   */
  checked: boolean;

  /**
   * Do we actually need to reset the db?
   */
  resetRequired: boolean;
}


class ResetNotification extends React.Component<any, State> {
  constructor(props: any) {
    super(props);
    this.state = {checked: false, resetRequired: true};
    setInterval(() => this.update(), 500);
  }
  async update() {
    const res = await wxApi.checkUpgrade();
    this.setState({resetRequired: res.dbResetRequired});
  }
  render() {
    if (this.state.resetRequired) {
      return (
        <div>
          <h1>Manual Reset Reqired</h1>
          <p>
              The wallet's database in your browser is incompatible with the {" "}
              currently installed wallet.  Please reset manually.
          </p>
          <p>Once the database format has stabilized, we will provide automatic upgrades.</p>
          <input id="check"
                 type="checkbox"
                 checked={this.state.checked}
                 onChange={(e) => this.setState({checked: e.target.checked})} />{" "}
          <label htmlFor="check">
            I understand that I will lose all my data
          </label>
          <br />
          <button className="pure-button" disabled={!this.state.checked} onClick={() => wxApi.resetDb()}>Reset</button>
        </div>
      );
    }
    return (
      <div>
        <h1>Everything is fine!</h1>
        A reset is not required anymore, you can close this page.
      </div>
    );
  }
}


document.addEventListener("DOMContentLoaded", () => {
  ReactDOM.render(<ResetNotification />, document.getElementById( "container")!);
});