// Copyright 2024 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 i18n from '../../../core/i18n/i18n.js';
import * as Buttons from '../../../ui/components/buttons/buttons.js';
import * as UI from '../../../ui/legacy/legacy.js';
import * as Lit from '../../../ui/lit/lit.js';

import timelineSummaryStyles from './timelineSummary.css.js';

const {render, html} = Lit;

const UIStrings = {
  /**
   * @description Text for total
   */
  total: 'Total',
  /**
   * @description Range in Timeline Details View's Summary
   * @example {1ms} PH1
   * @example {10ms} PH2
   */
  rangeSS: 'Range:  {PH1} – {PH2}',
} as const;
const str_ = i18n.i18n.registerUIStrings('panels/timeline/components/TimelineSummary.ts', UIStrings);
const i18nString = i18n.i18n.getLocalizedString.bind(undefined, str_);

export interface CategoryData {
  value: number;
  color: string;
  title: string;
}

interface ViewInput {
  rangeStart: number;
  rangeEnd: number;
  total: number;
  categories: CategoryData[];
  isInAIWidget?: boolean;
}

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

export const CATEGORY_SUMMARY_DEFAULT_VIEW: View = (input, _output, target): void => {
  const summaryClasses = Lit.Directives.classMap({
    'timeline-summary': true,
    'is-in-ai-widget': Boolean(input.isInAIWidget),
  });
  // clang-format off
  render(html`
        <style>${timelineSummaryStyles}</style>
        <style>@scope to (devtools-widget > *) { ${UI.inspectorCommonStyles} }</style>
        <style>@scope to (devtools-widget > *) { ${Buttons.textButtonStyles} }</style>
        <div class=${summaryClasses}>
            <div class="summary-range">${i18nString(UIStrings.rangeSS, {PH1: i18n.TimeUtilities.millisToString(input.rangeStart), PH2: i18n.TimeUtilities.millisToString(input.rangeEnd)})}</div>
            <div class="category-summary">
                ${input.categories.map(category => {
                    return html`
                        <div class="category-row">
                        <div class="category-swatch" style="background-color: ${category.color};"></div>
                        <div class="category-name">${category.title}</div>
                        <div class="category-value">
                            ${i18n.TimeUtilities.preciseMillisToString(category.value)}
                            <div class="background-bar-container">
                                <div class="background-bar" style='width: ${(category.value * 100 / input.total).toFixed(1)}%;'></div>
                            </div>
                        </div>
                        </div>`;
                })}
                <div class="category-row">
                    <div class="category-swatch"></div>
                    <div class="category-name">${i18nString(UIStrings.total)}</div>
                    <div class="category-value">
                        ${i18n.TimeUtilities.preciseMillisToString(input.total)}
                        <div class="background-bar-container">
                            <div class="background-bar"></div>
                        </div>
                    </div>
                </div>
              </div>
        </div>
        </div>

      </div>`, target);
  // clang-format on
};

export class CategorySummary extends UI.Widget.Widget {
  #view: View;

  #rangeStart = 0;
  #rangeEnd = 0;
  #total = 0;
  #categories: CategoryData[] = [];
  #isInAIWidget = false;

  constructor(element?: HTMLElement, view?: View) {
    super(element);
    this.#view = view ?? CATEGORY_SUMMARY_DEFAULT_VIEW;
    this.requestUpdate();
  }

  set data(data: ViewInput) {
    this.#rangeStart = data.rangeStart;
    this.#rangeEnd = data.rangeEnd;
    this.#total = data.total;
    this.#categories = data.categories;
    this.#isInAIWidget = Boolean(data.isInAIWidget);
    this.requestUpdate();
  }

  override performUpdate(): void {
    const viewInput: ViewInput = {
      rangeStart: this.#rangeStart,
      rangeEnd: this.#rangeEnd,
      total: this.#total,
      categories: this.#categories,
      isInAIWidget: this.#isInAIWidget,
    };
    this.#view(viewInput, undefined, this.contentElement);
  }
}