// Copyright 2021 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.

/*
 * Copyright (C) 2008 Nokia Inc.  All rights reserved.
 * Copyright (C) 2013 Samsung Electronics. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

import * as Common from '../../core/common/common.js';
import * as i18n from '../../core/i18n/i18n.js';
import * as TextUtils from '../../models/text_utils/text_utils.js';
import * as DataGrid from '../../ui/legacy/components/data_grid/data_grid.js';
import type * as Platform from '../../core/platform/platform.js';
import * as SourceFrame from '../../ui/legacy/components/source_frame/source_frame.js';
import * as UI from '../../ui/legacy/legacy.js';

import {DOMStorage} from './DOMStorageModel.js';
import {StorageItemsView} from './StorageItemsView.js';

const UIStrings = {
  /**
  *@description Text in DOMStorage Items View of the Application panel
  */
  domStorage: 'DOM Storage',
  /**
  *@description Text in DOMStorage Items View of the Application panel
  */
  key: 'Key',
  /**
  *@description Text for the value of something
  */
  value: 'Value',
  /**
  *@description Name for the "DOM Storage Items" table that shows the content of the DOM Storage.
  */
  domStorageItems: 'DOM Storage Items',
  /**
   *@description Text for announcing that the "DOM Storage Items" table was cleared, that is, all
   * entries were deleted.
   */
  domStorageItemsCleared: 'DOM Storage Items cleared',
  /**
  *@description Text in DOMStorage Items View of the Application panel
  */
  selectAValueToPreview: 'Select a value to preview',
  /**
   *@description Text for announcing a DOM Storage key/value item has been deleted
   */
  domStorageItemDeleted: 'The storage item was deleted.',
  /**
   *@description Text for announcing number of entries after filtering
   *@example {5} PH1
   */
  domStorageNumberEntries: 'Number of entries shown in table: {PH1}',
};
const str_ = i18n.i18n.registerUIStrings('panels/application/DOMStorageItemsView.ts', UIStrings);
const i18nString = i18n.i18n.getLocalizedString.bind(undefined, str_);
export class DOMStorageItemsView extends StorageItemsView {
  private domStorage: DOMStorage;
  private dataGrid: DataGrid.DataGrid.DataGridImpl<unknown>;
  private readonly splitWidget: UI.SplitWidget.SplitWidget;
  private readonly previewPanel: UI.Widget.VBox;
  private preview: UI.Widget.Widget|null;
  private previewValue: string|null;
  private eventListeners: Common.EventTarget.EventDescriptor[];

  constructor(domStorage: DOMStorage) {
    super(i18nString(UIStrings.domStorage), 'domStoragePanel');

    this.domStorage = domStorage;

    this.element.classList.add('storage-view', 'table');

    const columns = ([
      {id: 'key', title: i18nString(UIStrings.key), sortable: false, editable: true, longText: true, weight: 50},
      {id: 'value', title: i18nString(UIStrings.value), sortable: false, editable: true, longText: true, weight: 50},
    ] as DataGrid.DataGrid.ColumnDescriptor[]);
    this.dataGrid = new DataGrid.DataGrid.DataGridImpl({
      displayName: i18nString(UIStrings.domStorageItems),
      columns,
      editCallback: this.editingCallback.bind(this),
      deleteCallback: this.deleteCallback.bind(this),
      refreshCallback: this.refreshItems.bind(this),
    });
    this.dataGrid.addEventListener(DataGrid.DataGrid.Events.SelectedNode, event => {
      void this.previewEntry(event.data);
    });
    this.dataGrid.addEventListener(DataGrid.DataGrid.Events.DeselectedNode, () => {
      void this.previewEntry(null);
    });
    this.dataGrid.setStriped(true);
    this.dataGrid.setName('DOMStorageItemsView');

    this.splitWidget = new UI.SplitWidget.SplitWidget(
        /* isVertical: */ false, /* secondIsSidebar: */ true, 'domStorageSplitViewState');
    this.splitWidget.show(this.element);

    this.previewPanel = new UI.Widget.VBox();
    this.previewPanel.setMinimumSize(0, 50);
    const resizer = this.previewPanel.element.createChild('div', 'preview-panel-resizer');
    const dataGridWidget = this.dataGrid.asWidget();
    dataGridWidget.setMinimumSize(0, 50);
    this.splitWidget.setMainWidget(dataGridWidget);
    this.splitWidget.setSidebarWidget(this.previewPanel);
    this.splitWidget.installResizer(resizer);

    this.preview = null;
    this.previewValue = null;

    this.showPreview(null, null);

    this.eventListeners = [];
    this.setStorage(domStorage);
  }

  setStorage(domStorage: DOMStorage): void {
    Common.EventTarget.removeEventListeners(this.eventListeners);
    this.domStorage = domStorage;
    this.eventListeners = [
      this.domStorage.addEventListener(DOMStorage.Events.DOMStorageItemsCleared, this.domStorageItemsCleared, this),
      this.domStorage.addEventListener(DOMStorage.Events.DOMStorageItemRemoved, this.domStorageItemRemoved, this),
      this.domStorage.addEventListener(DOMStorage.Events.DOMStorageItemAdded, this.domStorageItemAdded, this),
      this.domStorage.addEventListener(DOMStorage.Events.DOMStorageItemUpdated, this.domStorageItemUpdated, this),
    ];
    this.refreshItems();
  }

  private domStorageItemsCleared(): void {
    if (!this.isShowing() || !this.dataGrid) {
      return;
    }

    this.dataGrid.rootNode().removeChildren();
    this.dataGrid.addCreationNode(false);
    UI.ARIAUtils.alert(i18nString(UIStrings.domStorageItemsCleared));
    this.setCanDeleteSelected(false);
  }

  private domStorageItemRemoved(event: Common.EventTarget.EventTargetEvent<DOMStorage.DOMStorageItemRemovedEvent>):
      void {
    if (!this.isShowing() || !this.dataGrid) {
      return;
    }

    const storageData = event.data;
    const rootNode = this.dataGrid.rootNode();
    const children = rootNode.children;

    for (let i = 0; i < children.length; ++i) {
      const childNode = children[i];
      if (childNode.data.key === storageData.key) {
        rootNode.removeChild(childNode);
        this.setCanDeleteSelected(children.length > 1);
        return;
      }
    }
  }

  private domStorageItemAdded(event: Common.EventTarget.EventTargetEvent<DOMStorage.DOMStorageItemAddedEvent>): void {
    if (!this.isShowing() || !this.dataGrid) {
      return;
    }

    const storageData = event.data;
    const rootNode = this.dataGrid.rootNode();
    const children = rootNode.children;

    for (let i = 0; i < children.length; ++i) {
      if (children[i].data.key === storageData.key) {
        return;
      }
    }

    const childNode = new DataGrid.DataGrid.DataGridNode({key: storageData.key, value: storageData.value}, false);
    rootNode.insertChild(childNode, children.length - 1);
  }

  private domStorageItemUpdated(event: Common.EventTarget.EventTargetEvent<DOMStorage.DOMStorageItemUpdatedEvent>):
      void {
    if (!this.isShowing() || !this.dataGrid) {
      return;
    }

    const storageData = event.data;
    const childNode = this.dataGrid.rootNode().children.find(
        (child: DataGrid.DataGrid.DataGridNode<unknown>) => child.data.key === storageData.key);
    if (!childNode || childNode.data.value === storageData.value) {
      return;
    }

    childNode.data.value = storageData.value;
    childNode.refresh();
    if (!childNode.selected) {
      return;
    }
    void this.previewEntry(childNode);
    this.setCanDeleteSelected(true);
  }

  private showDOMStorageItems(items: string[][]): void {
    const rootNode = this.dataGrid.rootNode();
    let selectedKey: null = null;
    for (const node of rootNode.children) {
      if (!node.selected) {
        continue;
      }
      selectedKey = node.data.key;
      break;
    }
    rootNode.removeChildren();
    let selectedNode: DataGrid.DataGrid.DataGridNode<unknown>|null = null;
    const filteredItems = (item: string[]): string => `${item[0]} ${item[1]}`;
    const filteredList = this.filter(items, filteredItems);
    for (const item of filteredList) {
      const key = item[0];
      const value = item[1];
      const node = new DataGrid.DataGrid.DataGridNode({key: key, value: value}, false);
      node.selectable = true;
      rootNode.appendChild(node);
      if (!selectedNode || key === selectedKey) {
        selectedNode = node;
      }
    }
    if (selectedNode) {
      selectedNode.selected = true;
    }
    this.dataGrid.addCreationNode(false);
    this.setCanDeleteSelected(Boolean(selectedNode));
    UI.ARIAUtils.alert(i18nString(UIStrings.domStorageNumberEntries, {PH1: filteredList.length}));
  }

  deleteSelectedItem(): void {
    if (!this.dataGrid || !this.dataGrid.selectedNode) {
      return;
    }

    this.deleteCallback(this.dataGrid.selectedNode);
  }

  refreshItems(): void {
    void this.domStorage.getItems().then(items => items && this.showDOMStorageItems(items));
  }

  deleteAllItems(): void {
    this.domStorage.clear();
    // explicitly clear the view because the event won't be fired when it has no items
    this.domStorageItemsCleared();
  }

  private editingCallback(
      editingNode: DataGrid.DataGrid.DataGridNode<unknown>, columnIdentifier: string, oldText: string,
      newText: string): void {
    const domStorage = this.domStorage;
    if (columnIdentifier === 'key') {
      if (typeof oldText === 'string') {
        domStorage.removeItem(oldText);
      }
      domStorage.setItem(newText, editingNode.data.value || '');
      this.removeDupes(editingNode);
    } else {
      domStorage.setItem(editingNode.data.key || '', newText);
    }
  }

  private removeDupes(masterNode: DataGrid.DataGrid.DataGridNode<unknown>): void {
    const rootNode = this.dataGrid.rootNode();
    const children = rootNode.children;
    for (let i = children.length - 1; i >= 0; --i) {
      const childNode = children[i];
      if ((childNode.data.key === masterNode.data.key) && (masterNode !== childNode)) {
        rootNode.removeChild(childNode);
      }
    }
  }

  private deleteCallback(node: DataGrid.DataGrid.DataGridNode<unknown>): void {
    if (!node || node.isCreationNode) {
      return;
    }

    if (this.domStorage) {
      this.domStorage.removeItem(node.data.key);
    }

    UI.ARIAUtils.alert(i18nString(UIStrings.domStorageItemDeleted));
  }

  private showPreview(preview: UI.Widget.Widget|null, value: string|null): void {
    if (this.preview && this.previewValue === value) {
      return;
    }
    if (this.preview) {
      this.preview.detach();
    }
    if (!preview) {
      preview = new UI.EmptyWidget.EmptyWidget(i18nString(UIStrings.selectAValueToPreview));
    }
    this.previewValue = value;
    this.preview = preview;
    preview.show(this.previewPanel.contentElement);
  }

  private async previewEntry(entry: DataGrid.DataGrid.DataGridNode<unknown>|null): Promise<void> {
    const value = entry && entry.data && entry.data.value;
    if (entry && entry.data && entry.data.value) {
      const protocol = this.domStorage.isLocalStorage ? 'localstorage' : 'sessionstorage';
      const url = `${protocol}://${entry.key}` as Platform.DevToolsPath.UrlString;
      const provider = TextUtils.StaticContentProvider.StaticContentProvider.fromString(
          url, Common.ResourceType.resourceTypes.XHR, (value as string));
      const preview = await SourceFrame.PreviewFactory.PreviewFactory.createPreview(provider, 'text/plain');
      // Selection could've changed while the preview was loaded
      if (entry.selected) {
        this.showPreview(preview, value);
      }
    } else {
      this.showPreview(null, value);
    }
  }
}