front_end/entrypoints/node_app/app/NodeConnectionsPanel.ts

// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/* eslint-disable @devtools/no-imperative-dom-api */

import type * as Common from '../../../core/common/common.js';
import * as Host from '../../../core/host/host.js';
import * as i18n from '../../../core/i18n/i18n.js';
import * as Buttons from '../../../ui/components/buttons/buttons.js';
import * as uiI18n from '../../../ui/i18n/i18n.js';
import * as UI from '../../../ui/legacy/legacy.js';

import nodeConnectionsPanelStyles from './nodeConnectionsPanel.css.js';

const UIStrings = {
  /**
   * @description Text in Node Connections Panel of the Sources panel when debugging a Node.js app
   */
  nodejsDebuggingGuide: 'Node.js debugging guide',
  /**
   * @description Text in Node Connections Panel of the Sources panel when debugging a Node.js app
   * @example {Node.js debugging guide} PH1
   */
  specifyNetworkEndpointAnd:
      'Specify network endpoint and DevTools will connect to it automatically. Read {PH1} to learn more.',
  /**
   * @description Placeholder text content in Node Connections Panel of the Sources panel when debugging a Node.js app
   */
  noConnectionsSpecified: 'No connections specified',
  /**
   * @description Text of add network target button in Node Connections Panel of the Sources panel when debugging a Node.js app
   */
  addConnection: 'Add connection',
  /**
   * @description Text in Node Connections Panel of the Sources panel when debugging a Node.js app
   */
  networkAddressEgLocalhost: 'Network address (e.g. localhost:9229)',
} as const;
const str_ = i18n.i18n.registerUIStrings('entrypoints/node_app/app/NodeConnectionsPanel.ts', UIStrings);
const i18nString = i18n.i18n.getLocalizedString.bind(undefined, str_);

const nodejsIconUrl = new URL('../../../Images/node-stack-icon.svg', import.meta.url).toString();

export class NodeConnectionsPanel extends UI.Panel.Panel {
  #config!: Adb.Config;
  readonly #networkDiscoveryView: NodeConnectionsView;
  constructor() {
    super('node-connection');

    this.contentElement.classList.add('node-panel');

    const container = this.contentElement.createChild('div', 'node-panel-center');

    const image = container.createChild('img', 'node-panel-logo');
    image.src = nodejsIconUrl;

    Host.InspectorFrontendHost.InspectorFrontendHostInstance.events.addEventListener(
        Host.InspectorFrontendHostAPI.Events.DevicesDiscoveryConfigChanged, this.#devicesDiscoveryConfigChanged, this);

    this.contentElement.tabIndex = 0;
    this.setDefaultFocusedElement(this.contentElement);

    // Trigger notification once.
    Host.InspectorFrontendHost.InspectorFrontendHostInstance.setDevicesUpdatesEnabled(false);
    Host.InspectorFrontendHost.InspectorFrontendHostInstance.setDevicesUpdatesEnabled(true);

    this.#networkDiscoveryView = new NodeConnectionsView(config => {
      this.#config.networkDiscoveryConfig = config;
      Host.InspectorFrontendHost.InspectorFrontendHostInstance.setDevicesDiscoveryConfig(this.#config);
    });
    this.#networkDiscoveryView.show(container);
  }

  #devicesDiscoveryConfigChanged({data: config}: Common.EventTarget.EventTargetEvent<Adb.Config>): void {
    this.#config = config;
    this.#networkDiscoveryView.discoveryConfigChanged(this.#config.networkDiscoveryConfig);
  }
  override wasShown(): void {
    super.wasShown();
    this.registerRequiredCSS(nodeConnectionsPanelStyles);
  }
}

export class NodeConnectionsView extends UI.Widget.VBox implements UI.ListWidget.Delegate<Adb.PortForwardingRule> {
  readonly #callback: (arg0: Adb.NetworkDiscoveryConfig) => void;
  readonly #list: UI.ListWidget.ListWidget<Adb.PortForwardingRule>;
  #editor: UI.ListWidget.Editor<Adb.PortForwardingRule>|null;
  #networkDiscoveryConfig: Array<{
    address: string,
  }>;
  constructor(callback: (arg0: Adb.NetworkDiscoveryConfig) => void) {
    super();
    this.#callback = callback;
    this.element.classList.add('network-discovery-view');

    const networkDiscoveryFooter = this.element.createChild('div', 'network-discovery-footer');
    const documentationLink = UI.XLink.XLink.create(
        'https://nodejs.org/en/docs/inspector/', i18nString(UIStrings.nodejsDebuggingGuide), undefined, undefined,
        'node-js-debugging');
    networkDiscoveryFooter.appendChild(
        uiI18n.getFormatLocalizedString(str_, UIStrings.specifyNetworkEndpointAnd, {PH1: documentationLink}));

    this.#list = new UI.ListWidget.ListWidget(this);
    this.#list.registerRequiredCSS(nodeConnectionsPanelStyles);
    this.#list.element.classList.add('network-discovery-list');
    const placeholder = document.createElement('div');
    placeholder.classList.add('network-discovery-list-empty');
    placeholder.textContent = i18nString(UIStrings.noConnectionsSpecified);
    this.#list.setEmptyPlaceholder(placeholder);
    this.#list.show(this.element);
    this.#editor = null;

    const addButton = UI.UIUtils.createTextButton(
        i18nString(UIStrings.addConnection), this.#addNetworkTargetButtonClicked.bind(this),
        {className: 'add-network-target-button', variant: Buttons.Button.Variant.PRIMARY});
    this.element.appendChild(addButton);

    this.#networkDiscoveryConfig = [];

    this.element.classList.add('node-frontend');
  }

  #update(): void {
    const config = this.#networkDiscoveryConfig.map(item => item.address);
    this.#callback.call(null, config);
  }

  #addNetworkTargetButtonClicked(): void {
    this.#list.addNewItem(this.#networkDiscoveryConfig.length, {address: '', port: ''});
  }

  discoveryConfigChanged(networkDiscoveryConfig: Adb.NetworkDiscoveryConfig): void {
    this.#networkDiscoveryConfig = [];
    this.#list.clear();
    for (const address of networkDiscoveryConfig) {
      const item = {address, port: ''};
      this.#networkDiscoveryConfig.push(item);
      this.#list.appendItem(item, true);
    }
  }

  renderItem(rule: Adb.PortForwardingRule, _editable: boolean): Element {
    const element = document.createElement('div');
    element.classList.add('network-discovery-list-item');
    element.createChild('div', 'network-discovery-value network-discovery-address').textContent = rule.address;
    return element;
  }

  removeItemRequested(_rule: Adb.PortForwardingRule, index: number): void {
    this.#networkDiscoveryConfig.splice(index, 1);
    this.#list.removeItem(index);
    this.#update();
  }

  commitEdit(rule: Adb.PortForwardingRule, editor: UI.ListWidget.Editor<Adb.PortForwardingRule>, isNew: boolean): void {
    rule.address = editor.control('address').value.trim();
    if (isNew) {
      this.#networkDiscoveryConfig.push(rule);
    }
    this.#update();
  }

  beginEdit(rule: Adb.PortForwardingRule): UI.ListWidget.Editor<Adb.PortForwardingRule> {
    const editor = this.#createEditor();
    editor.control('address').value = rule.address;
    return editor;
  }

  #createEditor(): UI.ListWidget.Editor<Adb.PortForwardingRule> {
    if (this.#editor) {
      return this.#editor;
    }

    const editor = new UI.ListWidget.Editor<Adb.PortForwardingRule>();
    this.#editor = editor;
    const content = editor.contentElement();
    const fields = content.createChild('div', 'network-discovery-edit-row');
    const input =
        editor.createInput('address', 'text', i18nString(UIStrings.networkAddressEgLocalhost), addressValidator);
    fields.createChild('div', 'network-discovery-value network-discovery-address').appendChild(input);
    return editor;

    function addressValidator(_rule: Adb.PortForwardingRule, _index: number, input: UI.ListWidget.EditorControl):
        UI.ListWidget.ValidatorResult {
      const match = input.value.trim().match(/^([a-zA-Z0-9\.\-_]+):(\d+)$/);
      if (!match) {
        return {
          valid: false,
          errorMessage: undefined,
        };
      }
      const port = parseInt(match[2], 10);
      return {
        valid: port <= 65535,
        errorMessage: undefined,
      };
    }
  }
}