/*
 * Copyright 2020 Spotify AB
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import {
  ApiProvider,
  ApiRegistry,
  appThemeApiRef,
  AppThemeSelector,
} from '@backstage/core';
import { renderWithEffects, wrapInTestApp } from '@backstage/test-utils';
import { lightTheme } from '@backstage/theme';
import { fireEvent } from '@testing-library/react';
import React from 'react';
import { ThemeToggle } from './ThemeToggle';

const mockTheme = {
  id: 'light',
  title: 'Mock Theme',
  variant: 'light' as 'light', // wut?
  theme: lightTheme,
};

const apiRegistry = ApiRegistry.from([
  [appThemeApiRef, AppThemeSelector.createWithStorage([mockTheme])],
]);

describe('<ThemeToggle />', () => {
  it('toggles the theme select button', async () => {
    const themeApi = apiRegistry.get(appThemeApiRef);
    const rendered = await renderWithEffects(
      wrapInTestApp(
        <ApiProvider apis={apiRegistry}>
          <ThemeToggle />
        </ApiProvider>,
      ),
    );

    expect(rendered.getByText('Theme')).toBeInTheDocument();

    const themeButton = rendered.getByTitle('Select Mock Theme');
    expect(themeApi?.getActiveThemeId()).toBe(undefined);
    fireEvent.click(themeButton);
    expect(themeApi?.getActiveThemeId()).toBe('light');
  });
});
