// 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 * as i18n from '../../core/i18n/i18n.js';
import * as SDK from '../../core/sdk/sdk.js';
import * as Protocol from '../../generated/protocol.js';
import * as Buttons from '../../ui/components/buttons/buttons.js';
import * as UI from '../../ui/legacy/legacy.js';
import * as VisualLogging from '../../ui/visual_logging/visual_logging.js';

import xhrBreakpointsSidebarPaneStyles from './xhrBreakpointsSidebarPane.css.js';

const UIStrings = {
  /**
   * @description Title of the 'XHR/fetch Breakpoints' tool in the bottom sidebar of the Sources tool
   */
  xhrfetchBreakpoints: 'XHR/fetch Breakpoints',
  /**
   * @description Text to indicate there are no breakpoints
   */
  noBreakpoints: 'No breakpoints',
  /**
   * @description Label for a button in the Sources panel that opens the input field to create a new XHR/fetch breakpoint.
   */
  addXhrfetchBreakpoint: 'Add XHR/fetch breakpoint',
  /**
   * @description Text to add a breakpoint
   */
  addBreakpoint: 'Add breakpoint',
  /**
   * @description Input element container text content in XHRBreakpoints Sidebar Pane of the JavaScript Debugging pane in the Sources panel or the DOM Breakpoints pane in the Elements panel
   */
  breakWhenUrlContains: 'Break when URL contains:',
  /**
   * @description Accessible label for XHR/fetch breakpoint text input
   */
  urlBreakpoint: 'URL Breakpoint',
  /**
   * @description Text in XHRBreakpoints Sidebar Pane of the JavaScript Debugging pane in the Sources panel or the DOM Breakpoints pane in the Elements panel
   * @example {example.com} PH1
   */
  urlContainsS: 'URL contains "{PH1}"',
  /**
   * @description Text in XHRBreakpoints Sidebar Pane of the JavaScript Debugging pane in the Sources panel or the DOM Breakpoints pane in the Elements panel
   */
  anyXhrOrFetch: 'Any XHR or fetch',
  /**
   * @description Screen reader description of a hit breakpoint in the Sources panel
   */
  breakpointHit: 'breakpoint hit',
  /**
   * @description Text to remove all breakpoints
   */
  removeAllBreakpoints: 'Remove all breakpoints',
  /**
   * @description Text to remove a breakpoint
   */
  removeBreakpoint: 'Remove breakpoint',
} as const;
const str_ = i18n.i18n.registerUIStrings('panels/browser_debugger/XHRBreakpointsSidebarPane.ts', UIStrings);
const i18nString = i18n.i18n.getLocalizedString.bind(undefined, str_);
const containerToBreakpointEntry = new WeakMap<Element, HTMLElement>();

const breakpointEntryToCheckbox = new WeakMap<Element, UI.UIUtils.CheckboxLabel>();

let xhrBreakpointsSidebarPaneInstance: XHRBreakpointsSidebarPane;

export class XHRBreakpointsSidebarPane extends UI.Widget.VBox implements UI.ContextFlavorListener.ContextFlavorListener,
                                                                         UI.Toolbar.ItemsProvider,
                                                                         UI.ListControl.ListDelegate<string> {
  readonly #breakpoints: UI.ListModel.ListModel<string>;
  #list: UI.ListControl.ListControl<string>;
  readonly #emptyElement: HTMLElement;
  readonly #breakpointElements: Map<string, Element>;
  readonly #addButton: UI.Toolbar.ToolbarButton;
  // TODO(crbug.com/1172300) Ignored during the jsdoc to ts migration)
  // eslint-disable-next-line @typescript-eslint/no-explicit-any
  #hitBreakpoint?: any;

  private constructor() {
    super({
      jslog: `${VisualLogging.section('source.xhr-breakpoints')}`,
      useShadowDom: true,
    });
    this.registerRequiredCSS(xhrBreakpointsSidebarPaneStyles);

    this.#breakpoints = new UI.ListModel.ListModel();
    this.#list = new UI.ListControl.ListControl(this.#breakpoints, this, UI.ListControl.ListMode.NonViewport);
    this.contentElement.appendChild(this.#list.element);
    this.#list.element.classList.add('breakpoint-list', 'hidden');
    UI.ARIAUtils.markAsList(this.#list.element);
    UI.ARIAUtils.setLabel(this.#list.element, i18nString(UIStrings.xhrfetchBreakpoints));
    this.#emptyElement = this.contentElement.createChild('div', 'gray-info-message');
    this.#emptyElement.textContent = i18nString(UIStrings.noBreakpoints);

    this.#breakpointElements = new Map();

    this.#addButton = new UI.Toolbar.ToolbarButton(
        i18nString(UIStrings.addXhrfetchBreakpoint), 'plus', undefined, 'sources.add-xhr-fetch-breakpoint');
    this.#addButton.setSize(Buttons.Button.Size.SMALL);
    this.#addButton.addEventListener(UI.Toolbar.ToolbarButton.Events.CLICK, () => {
      void this.addButtonClicked();
    });

    this.#emptyElement.addEventListener('contextmenu', this.emptyElementContextMenu.bind(this), true);
    this.#emptyElement.tabIndex = -1;
    this.restoreBreakpoints();
    this.update();
  }

  static instance(): XHRBreakpointsSidebarPane {
    if (!xhrBreakpointsSidebarPaneInstance) {
      xhrBreakpointsSidebarPaneInstance = new XHRBreakpointsSidebarPane();
    }
    return xhrBreakpointsSidebarPaneInstance;
  }

  toolbarItems(): UI.Toolbar.ToolbarItem[] {
    return [this.#addButton];
  }

  private emptyElementContextMenu(event: Event): void {
    const contextMenu = new UI.ContextMenu.ContextMenu(event);
    contextMenu.defaultSection().appendItem(
        i18nString(UIStrings.addBreakpoint), this.addButtonClicked.bind(this),
        {jslogContext: 'sources.add-xhr-fetch-breakpoint'});
    void contextMenu.show();
  }

  private async addButtonClicked(): Promise<void> {
    await UI.ViewManager.ViewManager.instance().showView('sources.xhr-breakpoints');

    const inputElementContainer = document.createElement('p');
    inputElementContainer.classList.add('breakpoint-condition');
    inputElementContainer.textContent = i18nString(UIStrings.breakWhenUrlContains);
    inputElementContainer.setAttribute('jslog', `${VisualLogging.value('condition').track({change: true})}`);

    const inputElement = inputElementContainer.createChild('span', 'breakpoint-condition-input');
    UI.ARIAUtils.setLabel(inputElement, i18nString(UIStrings.urlBreakpoint));
    this.addListElement(inputElementContainer, this.#list.element.firstChild as Element | null);

    const commit = (_element: Element, newText: string): void => {
      this.removeListElement(inputElementContainer);
      SDK.DOMDebuggerModel.DOMDebuggerManager.instance().addXHRBreakpoint(newText, true);
      this.setBreakpoint(newText);
      this.update();
    };

    const cancel = (): void => {
      this.removeListElement(inputElementContainer);
      this.update();
    };

    const config = new UI.InplaceEditor.Config(commit, cancel, undefined);
    UI.InplaceEditor.InplaceEditor.startEditing(inputElement, config);
  }

  heightForItem(_item: string): number {
    return 0;
  }

  isItemSelectable(_item: string): boolean {
    return true;
  }

  private setBreakpoint(breakKeyword: string): void {
    if (this.#breakpoints.indexOf(breakKeyword) !== -1) {
      this.#list.refreshItem(breakKeyword);
    } else {
      this.#breakpoints.insertWithComparator(breakKeyword, (a, b) => {
        if (a > b) {
          return 1;
        }
        if (a < b) {
          return -1;
        }
        return 0;
      });
    }
    if (!this.#list.selectedItem() || !this.hasFocus()) {
      this.#list.selectItem(this.#breakpoints.at(0));
    }
  }

  createElementForItem(item: string): Element {
    const listItemElement = document.createElement('div');
    UI.ARIAUtils.markAsListitem(listItemElement);
    const element = listItemElement.createChild('div', 'breakpoint-entry');
    containerToBreakpointEntry.set(listItemElement, element);
    const enabled = SDK.DOMDebuggerModel.DOMDebuggerManager.instance().xhrBreakpoints().get(item) || false;
    UI.ARIAUtils.markAsCheckbox(element);
    UI.ARIAUtils.setChecked(element, enabled);
    element.addEventListener('contextmenu', this.contextMenu.bind(this, item), true);

    const title = item ? i18nString(UIStrings.urlContainsS, {PH1: item}) : i18nString(UIStrings.anyXhrOrFetch);
    const checkbox = UI.UIUtils.CheckboxLabel.create(title, enabled, undefined, undefined, /* small */ true);
    UI.ARIAUtils.setHidden(checkbox, true);
    UI.ARIAUtils.setLabel(element, title);
    element.appendChild(checkbox);
    checkbox.addEventListener('click', this.checkboxClicked.bind(this, item, enabled), false);
    element.addEventListener('click', event => {
      if (event.target === element) {
        this.checkboxClicked(item, enabled);
      }
    }, false);
    breakpointEntryToCheckbox.set(element, checkbox);
    checkbox.tabIndex = -1;
    element.tabIndex = -1;
    if (item === this.#list.selectedItem()) {
      element.tabIndex = 0;
      this.setDefaultFocusedElement(element);
    }
    element.addEventListener('keydown', event => {
      let handled = false;
      if (event.key === ' ') {
        this.checkboxClicked(item, enabled);
        handled = true;
      } else if (event.key === 'Enter') {
        this.labelClicked(item);
        handled = true;
      }

      if (handled) {
        event.consume(true);
      }
    });

    if (item === this.#hitBreakpoint) {
      element.classList.add('breakpoint-hit');
      UI.ARIAUtils.setDescription(element, i18nString(UIStrings.breakpointHit));
    }

    checkbox.classList.add('cursor-auto');
    checkbox.addEventListener('dblclick', this.labelClicked.bind(this, item), false);
    this.#breakpointElements.set(item, listItemElement);
    listItemElement.setAttribute('jslog', `${VisualLogging.item().track({
                                   click: true,
                                   dblclick: true,
                                   resize: true,
                                   keydown: 'ArrowUp|ArrowDown|PageUp|PageDown|Enter|Space',
                                 })}`);
    return listItemElement;
  }

  selectedItemChanged(_from: string|null, _to: string|null, fromElement: HTMLElement|null, toElement: HTMLElement|null):
      void {
    if (fromElement) {
      const breakpointEntryElement = containerToBreakpointEntry.get(fromElement);
      if (!breakpointEntryElement) {
        throw new Error('Expected breakpoint entry to be found for an element');
      }
      breakpointEntryElement.tabIndex = -1;
    }
    if (toElement) {
      const breakpointEntryElement = containerToBreakpointEntry.get(toElement);
      if (!breakpointEntryElement) {
        throw new Error('Expected breakpoint entry to be found for an element');
      }
      this.setDefaultFocusedElement(breakpointEntryElement);
      breakpointEntryElement.tabIndex = 0;
      if (this.hasFocus()) {
        breakpointEntryElement.focus();
      }
    }
  }

  updateSelectedItemARIA(_fromElement: Element|null, _toElement: Element|null): boolean {
    return true;
  }

  private removeBreakpoint(breakKeyword: string): void {
    const index = this.#breakpoints.indexOf(breakKeyword);
    if (index >= 0) {
      this.#breakpoints.remove(index);
    }
    this.#breakpointElements.delete(breakKeyword);
    this.update();
  }

  private addListElement(element: Element, beforeNode: Node|null): void {
    this.#list.element.insertBefore(element, beforeNode);
    this.#emptyElement.classList.add('hidden');
    this.#list.element.classList.remove('hidden');
  }

  private removeListElement(element: Element): void {
    this.#list.element.removeChild(element);
    if (!this.#list.element.firstElementChild) {
      this.#emptyElement.classList.remove('hidden');
      this.#list.element.classList.add('hidden');
    }
  }

  private contextMenu(breakKeyword: string, event: Event): void {
    const contextMenu = new UI.ContextMenu.ContextMenu(event);

    function removeBreakpoint(this: XHRBreakpointsSidebarPane): void {
      SDK.DOMDebuggerModel.DOMDebuggerManager.instance().removeXHRBreakpoint(breakKeyword);
      this.removeBreakpoint(breakKeyword);
    }

    function removeAllBreakpoints(this: XHRBreakpointsSidebarPane): void {
      for (const url of this.#breakpointElements.keys()) {
        SDK.DOMDebuggerModel.DOMDebuggerManager.instance().removeXHRBreakpoint(url);
        this.removeBreakpoint(url);
      }
      this.update();
    }
    const removeAllTitle = i18nString(UIStrings.removeAllBreakpoints);

    contextMenu.defaultSection().appendItem(
        i18nString(UIStrings.addBreakpoint), this.addButtonClicked.bind(this),
        {jslogContext: 'sources.add-xhr-fetch-breakpoint'});
    contextMenu.defaultSection().appendItem(
        i18nString(UIStrings.removeBreakpoint), removeBreakpoint.bind(this),
        {jslogContext: 'sources.remove-xhr-fetch-breakpoint'});
    contextMenu.defaultSection().appendItem(
        removeAllTitle, removeAllBreakpoints.bind(this), {jslogContext: 'sources.remove-all-xhr-fetch-breakpoints'});
    void contextMenu.show();
  }

  private checkboxClicked(breakKeyword: string, checked: boolean): void {
    const hadFocus = this.hasFocus();
    SDK.DOMDebuggerModel.DOMDebuggerManager.instance().toggleXHRBreakpoint(breakKeyword, !checked);
    this.#list.refreshItem(breakKeyword);
    this.#list.selectItem(breakKeyword);
    if (hadFocus) {
      this.focus();
    }
  }

  private labelClicked(breakKeyword: string): void {
    const element = this.#breakpointElements.get(breakKeyword);
    const inputElement = document.createElement('span');
    inputElement.classList.add('breakpoint-condition');
    inputElement.textContent = breakKeyword;
    inputElement.setAttribute('jslog', `${VisualLogging.value('condition').track({change: true})}`);
    if (element) {
      this.#list.element.insertBefore(inputElement, element);
      element.classList.add('hidden');
    }

    const commit = (inputElement: Element, newText: string, _oldText: string|null, element?: Element): void => {
      this.removeListElement(inputElement);
      SDK.DOMDebuggerModel.DOMDebuggerManager.instance().removeXHRBreakpoint(breakKeyword);
      this.removeBreakpoint(breakKeyword);
      let enabled = true;
      if (element) {
        const breakpointEntryElement = containerToBreakpointEntry.get(element);
        const checkboxElement =
            breakpointEntryElement ? breakpointEntryToCheckbox.get(breakpointEntryElement) : undefined;
        if (checkboxElement) {
          enabled = checkboxElement.checked;
        }
      }
      SDK.DOMDebuggerModel.DOMDebuggerManager.instance().addXHRBreakpoint(newText, enabled);
      this.setBreakpoint(newText);
      this.#list.selectItem(newText);
      this.focus();
    };

    const cancel = (inputElement: Element, element?: Element): void => {
      this.removeListElement(inputElement);
      if (element) {
        element.classList.remove('hidden');
      }
      this.focus();
    };

    const config = new UI.InplaceEditor.Config(commit, cancel, element);
    UI.InplaceEditor.InplaceEditor.startEditing(inputElement, config);
  }

  flavorChanged(_object: Object|null): void {
    this.update();
  }

  update(): void {
    const isEmpty = this.#breakpoints.length === 0;
    this.#list.element.classList.toggle('hidden', isEmpty);
    this.#emptyElement.classList.toggle('hidden', !isEmpty);

    const details = UI.Context.Context.instance().flavor(SDK.DebuggerModel.DebuggerPausedDetails);
    if (!details || details.reason !== Protocol.Debugger.PausedEventReason.XHR) {
      if (this.#hitBreakpoint) {
        const oldHitBreakpoint = this.#hitBreakpoint;
        this.#hitBreakpoint = undefined;
        if (this.#breakpoints.indexOf(oldHitBreakpoint) >= 0) {
          this.#list.refreshItem(oldHitBreakpoint);
        }
      }
      return;
    }
    const url = details.auxData?.['breakpointURL'];
    this.#hitBreakpoint = url;
    if (this.#breakpoints.indexOf(url) < 0) {
      return;
    }
    this.#list.refreshItem(url);
    void UI.ViewManager.ViewManager.instance().showView('sources.xhr-breakpoints');
  }

  private restoreBreakpoints(): void {
    const breakpoints = SDK.DOMDebuggerModel.DOMDebuggerManager.instance().xhrBreakpoints();
    for (const url of breakpoints.keys()) {
      this.setBreakpoint(url);
    }
  }
}