// Copyright 2023 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 '../../ui/components/adorners/adorners.js';
import '../../ui/legacy/components/data_grid/data_grid.js';

import * as Common from '../../core/common/common.js';
import * as i18n from '../../core/i18n/i18n.js';
import type * as Platform from '../../core/platform/platform.js';
import * as SDK from '../../core/sdk/sdk.js';
import * as Protocol from '../../generated/protocol.js';
import * as AutofillManager from '../../models/autofill_manager/autofill_manager.js';
import * as ComponentHelpers from '../../ui/components/helpers/helpers.js';
import * as Input from '../../ui/components/input/input.js';
import * as LegacyWrapper from '../../ui/components/legacy_wrapper/legacy_wrapper.js';
import * as Lit from '../../ui/lit/lit.js';
import * as VisualLogging from '../../ui/visual_logging/visual_logging.js';

import autofillViewStylesRaw from './autofillView.css.js';

// TODO(crbug.com/391381439): Fully migrate off of constructed style sheets.
const autofillViewStyles = new CSSStyleSheet();
autofillViewStyles.replaceSync(autofillViewStylesRaw.cssContent);

const {html, render, Directives: {styleMap}} = Lit;
const {FillingStrategy} = Protocol.Autofill;

const UIStrings = {
  /**
   * @description Explanation for how to populate the autofill panel with data. Shown when there is
   * no data available.
   */
  toStartDebugging: 'To start debugging autofill, use Chrome\'s autofill menu to fill an address form.',
  /**
   * @description Column header for column containing form field values
   */
  value: 'Value',
  /**
   * @description Column header for column containing the predicted autofill categories
   */
  predictedAutofillValue: 'Predicted autofill value',
  /**
   * @description Column header for column containing the name/label/id of form fields
   */
  formField: 'Form field',
  /**
   * @description Tooltip for an adorner for form fields which have an autocomplete attribute
   * (http://go/mdn/HTML/Attributes/autocomplete)
   */
  autocompleteAttribute: 'Autocomplete attribute',
  /**
   * @description Abbreviation of 'attribute'. Text content of an adorner for form fields which
   * have an autocomplete attribute (http://go/mdn/HTML/Attributes/autocomplete)
   */
  attr: 'attr',
  /**
   * @description Tooltip for an adorner for form fields which don't have an autocomplete attribute
   * (http://go/mdn/HTML/Attributes/autocomplete) and for which Chrome used heuristics to deduce
   * the form field's autocomplete category.
   */
  inferredByHeuristics: 'Inferred by heuristics',
  /**
   * @description Abbreviation of 'heuristics'. Text content of an adorner for form fields which
   * don't have an autocomplete attribute (http://go/mdn/HTML/Attributes/autocomplete) and for
   * which Chrome used heuristics to deduce the form field's autocomplete category.
   */
  heur: 'heur',
  /**
   * @description Label for checkbox in the Autofill panel. If checked, this panel will open
   * automatically whenever a form is being autofilled.
   */
  autoShow: 'Automatically open this panel',
  /**
   * @description Label for checkbox in the Autofill panel. If checked, test addresses will be added to the Autofill popup.
   */
  showTestAddressesInAutofillMenu: 'Show test addresses in autofill menu',
  /**
   * @description Tooltip text for a checkbox label in the Autofill panel. If checked, this panel
   * will open automatically whenever a form is being autofilled.
   */
  autoShowTooltip: 'Open the autofill panel automatically when an autofill activity is detected.',
  /**
   * @description Aria text for the section of the autofill view containing a preview of the autofilled address.
   */
  addressPreview: 'Address preview',
  /**
   * @description Aria text for the section of the autofill view containing the info about the autofilled form fields.
   */
  formInspector: 'Form inspector',
  /**
   *@description Link text for a hyperlink to more documentation
   */
  learnMore: 'Learn more',
  /**
   *@description Link text for a hyperlink to webpage for leaving user feedback
   */
  sendFeedback: 'Send feedback',
};

const AUTOFILL_INFO_URL = 'https://goo.gle/devtools-autofill-panel' as Platform.DevToolsPath.UrlString;
const AUTOFILL_FEEDBACK_URL = 'https://crbug.com/329106326' as Platform.DevToolsPath.UrlString;

const str_ = i18n.i18n.registerUIStrings('panels/autofill/AutofillView.ts', UIStrings);
export const i18nString = i18n.i18n.getLocalizedString.bind(undefined, str_);

export class AutofillView extends LegacyWrapper.LegacyWrapper.WrappableComponent {
  readonly #shadow = this.attachShadow({mode: 'open'});
  readonly #renderBound = this.#render.bind(this);
  #autoOpenViewSetting: Common.Settings.Setting<boolean>;
  #showTestAddressesInAutofillMenuSetting: Common.Settings.Setting<boolean>;
  #address: string = '';
  #filledFields: Protocol.Autofill.FilledField[] = [];
  #matches: AutofillManager.AutofillManager.Match[] = [];
  #highlightedMatches: AutofillManager.AutofillManager.Match[] = [];

  constructor() {
    super();
    this.#autoOpenViewSetting =
        Common.Settings.Settings.instance().createSetting('auto-open-autofill-view-on-event', true);
    this.#showTestAddressesInAutofillMenuSetting =
        Common.Settings.Settings.instance().createSetting('show-test-addresses-in-autofill-menu-on-event', false);
  }

  connectedCallback(): void {
    this.#shadow.adoptedStyleSheets = [Input.checkboxStyles, autofillViewStyles];
    const autofillManager = AutofillManager.AutofillManager.AutofillManager.instance();
    const formFilledEvent = autofillManager.getLastFilledAddressForm();
    if (formFilledEvent) {
      ({
        address: this.#address,
        filledFields: this.#filledFields,
        matches: this.#matches,
      } = formFilledEvent);
    }
    autofillManager.addEventListener(
        AutofillManager.AutofillManager.Events.ADDRESS_FORM_FILLED, this.#onAddressFormFilled, this);

    SDK.TargetManager.TargetManager.instance().addModelListener(
        SDK.ResourceTreeModel.ResourceTreeModel, SDK.ResourceTreeModel.Events.PrimaryPageChanged,
        this.#onPrimaryPageChanged, this);

    void ComponentHelpers.ScheduledRender.scheduleRender(this, this.#renderBound);
  }

  #onPrimaryPageChanged(): void {
    this.#address = '';
    this.#filledFields = [];
    this.#matches = [];
    this.#highlightedMatches = [];
    void ComponentHelpers.ScheduledRender.scheduleRender(this, this.#renderBound);
  }

  #onAddressFormFilled(
      {data}: Common.EventTarget.EventTargetEvent<AutofillManager.AutofillManager.AddressFormFilledEvent>): void {
    ({
      address: this.#address,
      filledFields: this.#filledFields,
      matches: this.#matches,
    } = data);
    this.#highlightedMatches = [];
    void ComponentHelpers.ScheduledRender.scheduleRender(this, this.#renderBound);
  }

  async #render(): Promise<void> {
    if (!ComponentHelpers.ScheduledRender.isScheduledRender(this)) {
      throw new Error('AutofillView render was not scheduled');
    }

    if (!this.#address && !this.#filledFields.length) {
      // Disabled until https://crbug.com/1079231 is fixed.
      // clang-format off
      render(html`
        <main>
          <div class="top-left-corner">
            <label class="checkbox-label" title=${i18nString(UIStrings.showTestAddressesInAutofillMenu)}>
              <input
                type="checkbox"
                ?checked=${this.#showTestAddressesInAutofillMenuSetting.get()}
                @change=${this.#onShowTestAddressesInAutofillMenuChanged.bind(this)}
                jslog=${VisualLogging.toggle(this.#showTestAddressesInAutofillMenuSetting.name).track({ change: true })}>
              <span>${i18nString(UIStrings.showTestAddressesInAutofillMenu)}</span>
            </label>
            <label class="checkbox-label" title=${i18nString(UIStrings.autoShowTooltip)}>
            <input
              type="checkbox"
              ?checked=${this.#autoOpenViewSetting.get()}
              @change=${this.#onAutoOpenCheckboxChanged.bind(this)}
              jslog=${VisualLogging.toggle(this.#autoOpenViewSetting.name).track({ change: true })}>
            <span>${i18nString(UIStrings.autoShow)}</span>
            </label>
            <x-link href=${AUTOFILL_FEEDBACK_URL} class="feedback link" jslog=${VisualLogging.link('feedback').track({click: true})}>${i18nString(UIStrings.sendFeedback)}</x-link>
          </div>
          <div class="placeholder-container" jslog=${VisualLogging.pane('autofill-empty')}>
            <div class="placeholder">
              <div>${i18nString(UIStrings.toStartDebugging)}</div>
              <x-link href=${AUTOFILL_INFO_URL} class="link" jslog=${VisualLogging.link('learn-more').track({click: true})}>${i18nString(UIStrings.learnMore)}</x-link>
            </div>
          </div>
        </main>
      `, this.#shadow, {host: this});
      // clang-format on
      return;
    }

    // Disabled until https://crbug.com/1079231 is fixed.
    // clang-format off
    render(html`
      <main>
        <div class="content-container" jslog=${VisualLogging.pane('autofill')}>
          <div class="right-to-left" role="region" aria-label=${i18nString(UIStrings.addressPreview)}>
            <div class="header">
              <div class="label-container">
                <label class="checkbox-label" title=${i18nString(UIStrings.showTestAddressesInAutofillMenu)}>
                  <input
                    type="checkbox"
                    ?checked=${this.#showTestAddressesInAutofillMenuSetting.get()}
                    @change=${this.#onShowTestAddressesInAutofillMenuChanged.bind(this)}
                    jslog=${VisualLogging.toggle(this.#showTestAddressesInAutofillMenuSetting.name).track({ change: true })}
                  >
                  <span>${i18nString(UIStrings.showTestAddressesInAutofillMenu)}</span>
                </label>
              </div>
              <div class="label-container">
                <label class="checkbox-label" title=${i18nString(UIStrings.autoShowTooltip)}>
                  <input
                    type="checkbox"
                    ?checked=${this.#autoOpenViewSetting.get()}
                    @change=${this.#onAutoOpenCheckboxChanged.bind(this)}
                    jslog=${VisualLogging.toggle(this.#autoOpenViewSetting.name).track({ change: true })}
                  >
                  <span>${i18nString(UIStrings.autoShow)}</span>
                </label>
              </div>
              <x-link href=${AUTOFILL_FEEDBACK_URL} class="feedback link" jslog=${VisualLogging.link('feedback').track({click: true})}>${i18nString(UIStrings.sendFeedback)}</x-link>
            </div>
            ${this.#renderAddress()}
          </div>
          ${this.#renderFilledFields()}
        </div>
      </main>
    `, this.#shadow, {host: this});
    // clang-format on
  }

  #onAutoOpenCheckboxChanged(e: Event): void {
    const {checked} = e.target as HTMLInputElement;
    this.#autoOpenViewSetting.set(checked);
  }

  #onShowTestAddressesInAutofillMenuChanged(e: Event): void {
    const {checked} = e.target as HTMLInputElement;
    this.#showTestAddressesInAutofillMenuSetting.set(checked);
    AutofillManager.AutofillManager.AutofillManager.instance().onShowAutofillTestAddressesSettingsChanged();
  }

  #renderAddress(): Lit.LitTemplate {
    if (!this.#address) {
      return Lit.nothing;
    }

    const createSpan = (startIndex: number, endIndex: number): Lit.TemplateResult => {
      const textContentLines = this.#address.substring(startIndex, endIndex).split('\n');
      const templateLines =
          textContentLines.map((line, i) => i === textContentLines.length - 1 ? line : html`${line}<br>`);
      const hasMatches = this.#matches.some(match => match.startIndex <= startIndex && match.endIndex > startIndex);

      if (!hasMatches) {
        return html`<span>${templateLines}</span>`;
      }

      const spanClasses = Lit.Directives.classMap({
        'matches-filled-field': hasMatches,
        highlighted:
            this.#highlightedMatches.some(match => match.startIndex <= startIndex && match.endIndex > startIndex),
      });
      // Disabled until https://crbug.com/1079231 is fixed.
      // clang-format off
      return html`
        <span
          class=${spanClasses}
          @mouseenter=${() => this.#onSpanMouseEnter(startIndex)}
          @mouseleave=${this.#onSpanMouseLeave}
          jslog=${VisualLogging.item('matched-address-item').track({hover: true})}
        >${templateLines}</span>`;
      // clang-format on
    };

    // Split the address string into multiple spans. Each span is connected to
    // 0 or more matches. This allows highlighting the corresponding grid rows
    // when hovering over a span. And vice versa finding the corresponding
    // spans to highlight when hovering over a grid line.
    const spans: Lit.TemplateResult[] = [];
    const matchIndices = new Set<number>([0, this.#address.length]);
    for (const match of this.#matches) {
      matchIndices.add(match.startIndex);
      matchIndices.add(match.endIndex);
    }
    const sortedMatchIndices = Array.from(matchIndices).sort((a, b) => a - b);
    for (let i = 0; i < sortedMatchIndices.length - 1; i++) {
      spans.push(createSpan(sortedMatchIndices[i], sortedMatchIndices[i + 1]));
    }

    return html`
      <div class="address">
        ${spans}
      </div>
    `;
  }

  #onSpanMouseEnter(startIndex: number): void {
    this.#highlightedMatches =
        this.#matches.filter(match => match.startIndex <= startIndex && match.endIndex > startIndex);
    void ComponentHelpers.ScheduledRender.scheduleRender(this, this.#renderBound);
  }

  #onSpanMouseLeave(): void {
    this.#highlightedMatches = [];
    void ComponentHelpers.ScheduledRender.scheduleRender(this, this.#renderBound);
  }

  #renderFilledFields(): Lit.LitTemplate {
    if (!this.#filledFields.length) {
      return Lit.nothing;
    }

    const highlightedGridRows = new Set(this.#highlightedMatches.map(match => match.filledFieldIndex));
    // Disabled until https://crbug.com/1079231 is fixed.
    // clang-format off
    return html`
      <div class="grid-wrapper" role="region" aria-label=${i18nString(UIStrings.formInspector)}>
        <devtools-data-grid
          striped
          class="filled-fields-grid"
        >
          <table>
            <tr>
              <th id="name" weight="50" sortable>${i18nString(UIStrings.formField)}</th>
              <th id="autofill-type" weight="50" sortable>${i18nString(UIStrings.predictedAutofillValue)}</th>
              <th id="value" weight="50" sortable>${i18nString(UIStrings.value)}</th>
            </tr>
            ${this.#filledFields.map((field, index) => html`
                <tr style=${styleMap({
                    'font-family': 'var(--monospace-font-family)',
                    'font-size': 'var(--monospace-font-size)',
                    'background-color': highlightedGridRows.has(index) ? 'var(--sys-color-state-hover-on-subtle)' : null,
                  })}
                  @mouseenter=${() => this.#onGridRowMouseEnter(index)}
                  @mouseleave=${this.#onGridRowMouseLeave.bind(this)}
                >
                  <td>${field.name || `#${field.id}`} (${field.htmlType})</td>
                  <td>
                      ${field.autofillType}
                      ${field.fillingStrategy === FillingStrategy.AutocompleteAttribute ?
                            html`<devtools-adorner title=${i18nString(UIStrings.autocompleteAttribute)} .data=${{name: field.fillingStrategy}}>
                              <span slot="content">${i18nString(UIStrings.attr)}</span>
                            </devtools-adorner>` :
                        field.fillingStrategy === FillingStrategy.AutofillInferred ?
                            html`<devtools-adorner title=${i18nString(UIStrings.inferredByHeuristics)} .data=${{name: field.fillingStrategy}}>
                              <span slot="content">${i18nString(UIStrings.heur)}</span>
                            </devtools-adorner>` :
                            Lit.nothing}
                  </td>
                  <td>"${field.value}"</td>
                </tr>`
            )}
          </table>
        </devtools-data-grid>
      </div>
    `;
    // clang-format on
  }

  #onGridRowMouseEnter(rowIndex: number): void {
    this.#highlightedMatches = this.#matches.filter(match => match.filledFieldIndex === rowIndex);
    void ComponentHelpers.ScheduledRender.scheduleRender(this, this.#renderBound);

    const backendNodeId = this.#filledFields[rowIndex].fieldId;
    const target = SDK.FrameManager.FrameManager.instance()
                       .getFrame(this.#filledFields[rowIndex].frameId)
                       ?.resourceTreeModel()
                       .target();
    if (target) {
      const deferredNode = new SDK.DOMModel.DeferredDOMNode(target, backendNodeId);
      const domModel = target.model(SDK.DOMModel.DOMModel);
      if (deferredNode && domModel) {
        domModel.overlayModel().highlightInOverlay({deferredNode}, 'all');
      }
    }
  }

  #onGridRowMouseLeave(): void {
    this.#highlightedMatches = [];
    void ComponentHelpers.ScheduledRender.scheduleRender(this, this.#renderBound);
    SDK.OverlayModel.OverlayModel.hideDOMNodeHighlight();
  }
}

customElements.define('devtools-autofill-view', AutofillView);

declare global {
  interface HTMLElementTagNameMap {
    'devtools-autofill-view': AutofillView;
  }
}