// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import * as Common from '../../core/common/common.js';
import * as i18n from '../../core/i18n/i18n.js';
import * as SDK from '../../core/sdk/sdk.js';
import * as UI from '../../ui/legacy/legacy.js';

import type * as Animation from './animation.js';

let loadedAnimationModule: (typeof Animation|undefined);

const UIStrings = {
  /**
   * @description Title for the 'Animations' tool in the bottom drawer
   */
  animations: 'Animations',
  /**
   * @description Command for showing the 'Animations' tool in the bottom drawer
   */
  showAnimations: 'Show Animations',
} as const;
const str_ = i18n.i18n.registerUIStrings('panels/animation/animation-meta.ts', UIStrings);
const i18nLazyString = i18n.i18n.getLazilyComputedLocalizedString.bind(undefined, str_);

async function loadAnimationModule(): Promise<typeof Animation> {
  if (!loadedAnimationModule) {
    loadedAnimationModule = await import('./animation.js');
  }
  return loadedAnimationModule;
}

UI.ViewManager.registerViewExtension({
  location: UI.ViewManager.ViewLocationValues.DRAWER_VIEW,
  id: 'animations',
  title: i18nLazyString(UIStrings.animations),
  commandPrompt: i18nLazyString(UIStrings.showAnimations),
  persistence: UI.ViewManager.ViewPersistence.CLOSEABLE,
  order: 0,
  async loadView() {
    const Animation = await loadAnimationModule();
    return Animation.AnimationTimeline.AnimationTimeline.instance();
  },
});

Common.Revealer.registerRevealer({
  contextTypes() {
    return [
      SDK.AnimationModel.AnimationGroup,
    ];
  },
  destination: Common.Revealer.RevealerDestination.SOURCES_PANEL,
  async loadRevealer() {
    const Animation = await loadAnimationModule();
    return new Animation.AnimationTimeline.AnimationGroupRevealer();
  },
});