import * as path from 'path';
import { BrowserWindow, TouchBar } from 'electron';
import { closeWindow } from './window-helpers';
import { expect } from 'chai';

const { TouchBarButton, TouchBarColorPicker, TouchBarGroup, TouchBarLabel, TouchBarPopover, TouchBarScrubber, TouchBarSegmentedControl, TouchBarSlider, TouchBarSpacer } = TouchBar;

describe('TouchBar module', () => {
  it('throws an error when created without an options object', () => {
    expect(() => {
      const touchBar = new (TouchBar as any)();
      touchBar.toString();
    }).to.throw('Must specify options object as first argument');
  });

  it('throws an error when created with invalid items', () => {
    expect(() => {
      const touchBar = new TouchBar({ items: [1, true, {}, []] as any });
      touchBar.toString();
    }).to.throw('Each item must be an instance of TouchBarItem');
  });

  it('throws an error when an invalid escape item is set', () => {
    expect(() => {
      const touchBar = new TouchBar({ items: [], escapeItem: 'esc' as any });
      touchBar.toString();
    }).to.throw('Escape item must be an instance of TouchBarItem');

    expect(() => {
      const touchBar = new TouchBar({ items: [] });
      touchBar.escapeItem = 'esc' as any;
    }).to.throw('Escape item must be an instance of TouchBarItem');
  });

  it('throws an error if the same TouchBarItem is added multiple times', () => {
    expect(() => {
      const item = new TouchBarLabel({ label: 'Label' });
      const touchBar = new TouchBar({ items: [item, item] });
      touchBar.toString();
    }).to.throw('Cannot add a single instance of TouchBarItem multiple times in a TouchBar');
  });

  describe('BrowserWindow behavior', () => {
    let window: BrowserWindow;

    beforeEach(() => {
      window = new BrowserWindow({ show: false });
    });

    afterEach(async () => {
      window.setTouchBar(null);
      await closeWindow(window);
      window = null as unknown as BrowserWindow;
    });

    it('can be added to and removed from a window', () => {
      const label = new TouchBarLabel({ label: 'bar' });
      const touchBar = new TouchBar({ items: [
        new TouchBarButton({ label: 'foo', backgroundColor: '#F00', click: () => {} }),
        new TouchBarButton({
          icon: path.join(__dirname, 'fixtures', 'assets', 'logo.png'),
          iconPosition: 'right',
          click: () => {}
        }),
        new TouchBarColorPicker({ selectedColor: '#F00', change: () => {} }),
        new TouchBarGroup({ items: new TouchBar({ items: [new TouchBarLabel({ label: 'hello' })] }) }),
        label,
        new TouchBarPopover({ items: new TouchBar({ items: [new TouchBarButton({ label: 'pop' })] }) }),
        new TouchBarSlider({ label: 'slide', value: 5, minValue: 2, maxValue: 75, change: () => {} }),
        new TouchBarSpacer({ size: 'large' }),
        new TouchBarSegmentedControl({
          segmentStyle: 'capsule',
          segments: [{ label: 'baz', enabled: false }],
          selectedIndex: 5
        }),
        new TouchBarSegmentedControl({ segments: [] }),
        new TouchBarScrubber({
          items: [{ label: 'foo' }, { label: 'bar' }, { label: 'baz' }],
          selectedStyle: 'outline',
          mode: 'fixed',
          showArrowButtons: true
        })
      ] });
      const escapeButton = new TouchBarButton({ label: 'foo' });
      window.setTouchBar(touchBar);
      touchBar.escapeItem = escapeButton;
      label.label = 'baz';
      escapeButton.label = 'hello';
      window.setTouchBar(null);
      window.setTouchBar(new TouchBar({ items: [new TouchBarLabel({ label: 'two' })] }));
      touchBar.escapeItem = null;
    });

    it('calls the callback on the items when a window interaction event fires', (done) => {
      const button = new TouchBarButton({
        label: 'bar',
        click: () => {
          done();
        }
      });
      const touchBar = new TouchBar({ items: [button] });
      window.setTouchBar(touchBar);
      window.emit('-touch-bar-interaction', {}, (button as any).id);
    });

    it('calls the callback on the escape item when a window interaction event fires', (done) => {
      const button = new TouchBarButton({
        label: 'bar',
        click: () => {
          done();
        }
      });
      const touchBar = new TouchBar({ escapeItem: button });
      window.setTouchBar(touchBar);
      window.emit('-touch-bar-interaction', {}, (button as any).id);
    });
  });
});
