// Copyright 2020 The Chromium Authors. All rights reserved.
// 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 DataGrid from '../../../ui/components/data_grid/data_grid.js';
import * as ComponentHelpers from '../../../ui/components/helpers/helpers.js';
import * as IconButton from '../../../ui/components/icon_button/icon_button.js';
import * as LitHtml from '../../../ui/lit-html/lit-html.js';

import trustTokensViewStyles from './trustTokensView.css.js';
import trustTokensViewDeleteButtonStyles from './trustTokensViewDeleteButton.css.js';

import type * as Protocol from '../../../generated/protocol.js';

const UIStrings = {
  /**
  *@description Text for the issuer of an item
  */
  issuer: 'Issuer',
  /**
  *@description Column header for Trust Token table
  */
  storedTokenCount: 'Stored token count',
  /**
  *@description Hover text for an info icon in the Trust Token panel
  */
  allStoredTrustTokensAvailableIn: 'All stored Trust Tokens available in this browser instance.',
  /**
   * @description Text shown instead of a table when the table would be empty.
   */
  noTrustTokensStored: 'No Trust Tokens are currently stored.',
  /**
   * @description Each row in the Trust Token table has a delete button. This is the text shown
   * when hovering over this button. The placeholder is a normal URL, indicating the site which
   * provided the Trust Tokens that will be deleted when the button is clicked.
   * @example {https://google.com} PH1
   */
  deleteTrustTokens: 'Delete all stored Trust Tokens issued by {PH1}.',
};
const str_ = i18n.i18n.registerUIStrings('panels/application/components/TrustTokensView.ts', UIStrings);
export const i18nString = i18n.i18n.getLocalizedString.bind(undefined, str_);

interface TrustTokensDeleteButtonData {
  issuer: DataGrid.DataGridUtils.CellValue;
  deleteClickHandler: (issuerOrigin: string) => void;
}

class TrustTokensDeleteButton extends HTMLElement {
  static readonly litTagName = LitHtml.literal`devtools-trust-tokens-delete-button`;
  readonly #shadow = this.attachShadow({mode: 'open'});
  #issuer: DataGrid.DataGridUtils.CellValue|null = null;
  #deleteClickHandler: (issuerOrigin: string) => void = () => {};

  connectedCallback(): void {
    this.#shadow.adoptedStyleSheets = [trustTokensViewDeleteButtonStyles];
  }

  set data(data: TrustTokensDeleteButtonData) {
    this.#issuer = data.issuer;
    this.#deleteClickHandler = data.deleteClickHandler;
    this.#render();
  }

  #render(): void {
    if (!this.#issuer) {
      return;
    }
    // clang-format off
    LitHtml.render(LitHtml.html`
      <!-- Wrap the button in a container, otherwise we can't center it inside the column. -->
      <span class="button-container">
        <button class="delete-button"
          title=${i18nString(UIStrings.deleteTrustTokens, {PH1: this.#issuer as string})}
          @click=${(): void => this.#deleteClickHandler(this.#issuer as string)}>
          <${IconButton.Icon.Icon.litTagName} .data=${
        {iconName: 'trash_bin_icon', color: 'var(--color-text-secondary)', width: '9px', height: '14px'} as
        IconButton.Icon.IconWithName}>
          </${IconButton.Icon.Icon.litTagName}>
        </button>
      </span>`, this.#shadow, {host: this});
    // clang-format on
  }
}

export interface TrustTokensViewData {
  tokens: Protocol.Storage.TrustTokens[];
  deleteClickHandler: (issuerOrigin: string) => void;
}

export class TrustTokensView extends HTMLElement {
  static readonly litTagName = LitHtml.literal`devtools-trust-tokens-storage-view`;
  readonly #shadow = this.attachShadow({mode: 'open'});
  #tokens: Protocol.Storage.TrustTokens[] = [];
  #deleteClickHandler: (issuerOrigin: string) => void = () => {};

  connectedCallback(): void {
    this.#shadow.adoptedStyleSheets = [trustTokensViewStyles];
    this.#render();
  }

  set data(data: TrustTokensViewData) {
    this.#tokens = data.tokens;
    this.#deleteClickHandler = data.deleteClickHandler;
    this.#render();
  }

  #render(): void {
    // clang-format off
    LitHtml.render(LitHtml.html`
      <div>
        <span class="heading">Trust Tokens</span>
        <${IconButton.Icon.Icon.litTagName} class="info-icon" title=${
            i18nString(UIStrings.allStoredTrustTokensAvailableIn)}
          .data=${
            {iconName: 'ic_info_black_18dp', color: 'var(--color-link)', width: '14px'} as
            IconButton.Icon.IconWithName}>
        </${IconButton.Icon.Icon.litTagName}>
        ${this.#renderGridOrNoDataMessage()}
      </div>
    `, this.#shadow, {host: this});
    // clang-format on
  }

  #renderGridOrNoDataMessage(): LitHtml.TemplateResult {
    if (this.#tokens.length === 0) {
      return LitHtml.html`<div class="no-tt-message">${i18nString(UIStrings.noTrustTokensStored)}</div>`;
    }

    const gridData: DataGrid.DataGridController.DataGridControllerData = {
      columns: [
        {
          id: 'issuer',
          title: i18nString(UIStrings.issuer),
          widthWeighting: 10,
          hideable: false,
          visible: true,
          sortable: true,
        },
        {
          id: 'count',
          title: i18nString(UIStrings.storedTokenCount),
          widthWeighting: 5,
          hideable: false,
          visible: true,
          sortable: true,
        },
        {
          id: 'delete-button',
          title: '',
          widthWeighting: 1,
          hideable: false,
          visible: true,
          sortable: false,
        },
      ],
      rows: this.#buildRowsFromTokens(),
      initialSort: {
        columnId: 'issuer',
        direction: DataGrid.DataGridUtils.SortDirection.ASC,
      },
    };

    return LitHtml.html`
      <${DataGrid.DataGridController.DataGridController.litTagName} .data=${
        gridData as DataGrid.DataGridController.DataGridControllerData}></${
        DataGrid.DataGridController.DataGridController.litTagName}>
    `;
  }

  #buildRowsFromTokens(): DataGrid.DataGridUtils.Row[] {
    const tokens = this.#tokens.filter(token => token.count > 0);
    return tokens.map(token => ({
                        cells: [
                          {
                            columnId: 'delete-button',
                            value: removeTrailingSlash(token.issuerOrigin),
                            renderer: this.#deleteButtonRendererForDataGridCell.bind(this),
                          },
                          {columnId: 'issuer', value: removeTrailingSlash(token.issuerOrigin)},
                          {columnId: 'count', value: token.count},
                        ],
                      }));
  }

  #deleteButtonRendererForDataGridCell(issuer: DataGrid.DataGridUtils.CellValue): LitHtml.TemplateResult {
    // clang-format off
    return LitHtml.html`<${TrustTokensDeleteButton.litTagName}
     .data=${{issuer, deleteClickHandler: this.#deleteClickHandler} as TrustTokensDeleteButtonData}
    ></${TrustTokensDeleteButton.litTagName}>`;
    // clang-format on
  }
}

function removeTrailingSlash(s: string): string {
  return s.replace(/\/$/, '');
}

ComponentHelpers.CustomElements.defineComponent('devtools-trust-tokens-delete-button', TrustTokensDeleteButton);
ComponentHelpers.CustomElements.defineComponent('devtools-trust-tokens-storage-view', TrustTokensView);

declare global {
  // eslint-disable-next-line @typescript-eslint/no-unused-vars
  interface HTMLElementTagNameMap {
    'devtools-trust-tokens-storage-view': TrustTokensView;
    'devtools-trust-tokens-delete-button': TrustTokensDeleteButton;
  }
}