/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/

import * as dom from '../../../../vs/base/browser/dom';
import {
  ActionBar,
  IActionViewItemProvider,
} from '../../../../vs/base/browser/ui/actionbar/actionbar';
import { IAction } from '../../../../vs/base/common/actions';
import { ResolvedKeybinding } from '../../../../vs/base/common/keyCodes';
import { DisposableStore } from '../../../../vs/base/common/lifecycle';
import { suggestWidgetStatusbarMenu } from '../../../../vs/editor/contrib/suggest/suggest';
import { localize } from '../../../../vs/nls';
import { MenuEntryActionViewItem } from '../../../../vs/platform/actions/browser/menuEntryActionViewItem';
import {
  IMenuService,
  MenuItemAction,
} from '../../../../vs/platform/actions/common/actions';
import { IContextKeyService } from '../../../../vs/platform/contextkey/common/contextkey';
import { IInstantiationService } from '../../../../vs/platform/instantiation/common/instantiation';

class StatusBarViewItem extends MenuEntryActionViewItem {
  override updateLabel() {
    const kb = this._keybindingService.lookupKeybinding(this._action.id);
    if (!kb) {
      return super.updateLabel();
    }
    if (this.label) {
      this.label.textContent = localize(
        'ddd',
        '{0} ({1})',
        this._action.label,
        StatusBarViewItem.symbolPrintEnter(kb)
      );
    }
  }

  static symbolPrintEnter(kb: ResolvedKeybinding) {
    return kb.getLabel()?.replace(/\benter\b/gi, '\u23CE');
  }
}

export class SuggestWidgetStatus {
  readonly element: HTMLElement;

  private readonly _leftActions: ActionBar;
  private readonly _rightActions: ActionBar;
  private readonly _menuDisposables = new DisposableStore();

  constructor(
    container: HTMLElement,
    @IInstantiationService instantiationService: IInstantiationService,
    @IMenuService private _menuService: IMenuService,
    @IContextKeyService private _contextKeyService: IContextKeyService
  ) {
    this.element = dom.append(container, dom.$('.suggest-status-bar'));

    const actionViewItemProvider = <IActionViewItemProvider>((action) => {
      return action instanceof MenuItemAction
        ? instantiationService.createInstance(StatusBarViewItem, action)
        : undefined;
    });
    this._leftActions = new ActionBar(this.element, { actionViewItemProvider });
    this._rightActions = new ActionBar(this.element, {
      actionViewItemProvider,
    });

    this._leftActions.domNode.classList.add('left');
    this._rightActions.domNode.classList.add('right');
  }

  dispose(): void {
    this._menuDisposables.dispose();
    this.element.remove();
  }

  show(): void {
    const menu = this._menuService.createMenu(
      suggestWidgetStatusbarMenu,
      this._contextKeyService
    );
    const renderMenu = () => {
      const left: IAction[] = [];
      const right: IAction[] = [];
      for (let [group, actions] of menu.getActions()) {
        if (group === 'left') {
          left.push(...actions);
        } else {
          right.push(...actions);
        }
      }
      this._leftActions.clear();
      this._leftActions.push(left);
      this._rightActions.clear();
      this._rightActions.push(right);
    };
    this._menuDisposables.add(menu.onDidChange(() => renderMenu()));
    this._menuDisposables.add(menu);
  }

  hide(): void {
    this._menuDisposables.clear();
  }
}