// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import '../../ui/components/adorners/adorners.js';

import * as i18n from '../../core/i18n/i18n.js';
import * as IssuesManager from '../../models/issues_manager/issues_manager.js';
import * as Buttons from '../../ui/components/buttons/buttons.js';
import * as UI from '../../ui/legacy/legacy.js';
import {html, render} from '../../ui/lit/lit.js';
import * as VisualLogging from '../../ui/visual_logging/visual_logging.js';

const UIStrings = {
  /**
   * @description Title for the hidden issues row
   */
  hiddenIssues: 'Hidden issues',
  /**
   * @description Label for the button to unhide all hidden issues
   */
  unhideAll: 'Unhide all',
} as const;

const str_ = i18n.i18n.registerUIStrings('panels/issues/HiddenIssuesRow.ts', UIStrings);
const i18nString = i18n.i18n.getLocalizedString.bind(undefined, str_);

interface ViewInput {
  count: number;
  onUnhideAllIssues: () => void;
}

type ViewOutput = unknown;

type View = (input: ViewInput, output: ViewOutput, target: HTMLElement) => void;

const DEFAULT_VIEW: View = (input: ViewInput, _output: ViewOutput, target: HTMLElement): void => {
  const stopPropagationForEnter = (event: KeyboardEvent): void => {
    if (event.key === 'Enter') {
      // Make sure we don't propagate 'Enter' key events to parents,
      // so that these get turned into 'click' events properly. If we
      // don't stop the propagation here, the 'Enter' key down event
      // will be consumed by the tree element and it'll be expanded
      // or collapsed instead of the "Unhide all" action being taken.
      event.stopImmediatePropagation();
    }
  };

  // clang-format off
  render(html`
  <div class="header">
    <devtools-adorner class="aggregated-issues-count" .name=${'countWrapper'}>
      <span>${input.count}</span>
    </devtools-adorner>
    <div class="title">${i18nString(UIStrings.hiddenIssues)}</div>
    <devtools-button class="unhide-all-issues-button"
                     jslog=${VisualLogging.action().track({click: true}).context('issues.unhide-all-hiddes')}
                     @click=${input.onUnhideAllIssues}
                     @keydown=${stopPropagationForEnter}
                     .variant=${Buttons.Button.Variant.OUTLINED}>${i18nString(UIStrings.unhideAll)}</devtools-button>
  </div>`, target);
  // clang-format on
};

export class HiddenIssuesRow extends UI.TreeOutline.TreeElement {
  #view: View;

  constructor(view: View = DEFAULT_VIEW) {
    super(undefined, true, 'hidden-issues');
    this.#view = view;
    this.toggleOnClick = true;
    this.listItemElement.classList.add('issue-category', 'hidden-issues');
    this.childrenListElement.classList.add('hidden-issues-body');
    this.update(0);
  }

  update(count: number): void {
    const issuesManager = IssuesManager.IssuesManager.IssuesManager.instance();
    const onUnhideAllIssues = issuesManager.unhideAllIssues.bind(issuesManager);
    const input = {
      count,
      onUnhideAllIssues,
    };
    const output = undefined;
    this.#view(input, output, this.listItemElement);
  }
}