// Copyright (c) 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 DataGrid from '../data_grid/data_grid.js';
import * as Host from '../host/host.js';
import {ls} from '../platform/platform.js';
import * as SDK from '../sdk/sdk.js';  // eslint-disable-line no-unused-vars
import * as TextUtils from '../text_utils/text_utils.js';
import * as UI from '../ui/ui.js';

export class DeveloperResourcesListView extends UI.Widget.VBox {
  /**
   * @param {function(!SDK.PageResourceLoader.PageResource):boolean} isVisibleFilter
   */
  constructor(isVisibleFilter) {
    super(true);
    /** @type {!Map<!SDK.PageResourceLoader.PageResource, !GridNode>} */
    this._nodeForItem = new Map();
    this._isVisibleFilter = isVisibleFilter;
    /** @type {?RegExp} */
    this._highlightRegExp = null;
    this.registerRequiredCSS('developer_resources/developerResourcesListView.css');

    const columns = /** @type {!Array<!DataGrid.DataGrid.ColumnDescriptor>} */ ([
      {id: 'status', title: ls`Status`, width: '60px', fixedWidth: true, sortable: true},
      {id: 'url', title: ls`URL`, width: '250px', fixedWidth: false, sortable: true},
      {id: 'initiator', title: ls`Initiator`, width: '80px', fixedWidth: false, sortable: true}, {
        id: 'size',
        title: ls`Total Bytes`,
        width: '80px',
        fixedWidth: true,
        sortable: true,
        align: DataGrid.DataGrid.Align.Right
      },
      {
        id: 'errorMessage',
        title: ls`Error`,
        width: '200px',
        fixedWidth: false,
        sortable: true,
      }
    ]);
    /** @type {!DataGrid.SortableDataGrid.SortableDataGrid<!GridNode>} */
    this._dataGrid = new DataGrid.SortableDataGrid.SortableDataGrid({
      displayName: ls`Developer Resources`,
      columns,
      editCallback: undefined,
      refreshCallback: undefined,
      deleteCallback: undefined
    });
    this._dataGrid.setResizeMethod(DataGrid.DataGrid.ResizeMethod.Last);
    this._dataGrid.element.classList.add('flex-auto');
    this._dataGrid.addEventListener(DataGrid.DataGrid.Events.SortingChanged, this._sortingChanged, this);
    this._dataGrid.setRowContextMenuCallback(this._populateContextMenu.bind(this));

    const dataGridWidget = this._dataGrid.asWidget();
    dataGridWidget.show(this.contentElement);
    this.setDefaultFocusedChild(dataGridWidget);
  }


  /**
   * @param {!UI.ContextMenu.ContextMenu} contextMenu
   * @param {!DataGrid.ViewportDataGrid.ViewportDataGridNode<!DataGrid.SortableDataGrid.SortableDataGridNode<!GridNode>>} gridNode
   */
  _populateContextMenu(contextMenu, gridNode) {
    const item = (/** @type {!GridNode} */ (gridNode)).item;
    contextMenu.clipboardSection().appendItem(ls`Copy URL`, () => {
      Host.InspectorFrontendHost.InspectorFrontendHostInstance.copyText(item.url);
    });
    if (item.initiator.initiatorUrl) {
      contextMenu.clipboardSection().appendItem(ls`Copy initiator URL`, () => {
        Host.InspectorFrontendHost.InspectorFrontendHostInstance.copyText(item.initiator.initiatorUrl);
      });
    }
  }

  /**
   * @param {!Iterable<!SDK.PageResourceLoader.PageResource>} items
   */
  update(items) {
    let hadUpdates = false;
    const rootNode = this._dataGrid.rootNode();
    for (const item of items) {
      let node = this._nodeForItem.get(item);
      if (node) {
        if (this._isVisibleFilter(node.item)) {
          hadUpdates = node._refreshIfNeeded() || hadUpdates;
        }
        continue;
      }
      node = new GridNode(item);
      this._nodeForItem.set(item, node);
      if (this._isVisibleFilter(node.item)) {
        rootNode.appendChild(node);
        hadUpdates = true;
      }
    }
    if (hadUpdates) {
      this._sortingChanged();
    }
  }

  reset() {
    this._nodeForItem.clear();
    this._dataGrid.rootNode().removeChildren();
  }

  /**
   * @param {?RegExp} highlightRegExp
   */
  updateFilterAndHighlight(highlightRegExp) {
    this._highlightRegExp = highlightRegExp;
    let hadTreeUpdates = false;
    for (const node of this._nodeForItem.values()) {
      const shouldBeVisible = this._isVisibleFilter(node.item);
      const isVisible = !!node.parent;
      if (shouldBeVisible) {
        node._setHighlight(this._highlightRegExp);
      }
      if (shouldBeVisible === isVisible) {
        continue;
      }
      hadTreeUpdates = true;
      if (!shouldBeVisible) {
        node.remove();
      } else {
        this._dataGrid.rootNode().appendChild(node);
      }
    }
    if (hadTreeUpdates) {
      this._sortingChanged();
    }
  }

  _sortingChanged() {
    const columnId = this._dataGrid.sortColumnId();
    if (!columnId) {
      return;
    }

    const sortFunction =
        /** @type {null|function(!DataGrid.SortableDataGrid.SortableDataGridNode<!GridNode>, !DataGrid.SortableDataGrid.SortableDataGridNode<!GridNode>):number} */
        (GridNode.sortFunctionForColumn(columnId));
    if (sortFunction) {
      this._dataGrid.sortNodes(sortFunction, !this._dataGrid.isSortOrderAscending());
    }
  }
}

/**
 * @extends {DataGrid.SortableDataGrid.SortableDataGridNode<!GridNode>}
 */
class GridNode extends DataGrid.SortableDataGrid.SortableDataGridNode {
  /**
   * @param {!SDK.PageResourceLoader.PageResource} item
   */
  constructor(item) {
    super();
    this.item = item;
    /** @type {?RegExp} */
    this._highlightRegExp = null;
  }

  /**
   * @param {?RegExp} highlightRegExp
   */
  _setHighlight(highlightRegExp) {
    if (this._highlightRegExp === highlightRegExp) {
      return;
    }
    this._highlightRegExp = highlightRegExp;
    this.refresh();
  }

  /**
   * @return {boolean}
   */
  _refreshIfNeeded() {
    this.refresh();
    return true;
  }

  /**
   * @override
   * @param {string} columnId
   * @return {!HTMLElement}
   */
  createCell(columnId) {
    const cell = /** @type {!HTMLElement} */ (this.createTD(columnId));
    switch (columnId) {
      case 'url': {
        cell.title = this.item.url;
        const outer = cell.createChild('div', 'url-outer');
        const prefix = outer.createChild('div', 'url-prefix');
        const suffix = outer.createChild('div', 'url-suffix');
        const splitURL = /^(.*)(\/[^/]*)$/.exec(this.item.url);
        prefix.textContent = splitURL ? splitURL[1] : this.item.url;
        suffix.textContent = splitURL ? splitURL[2] : '';
        if (this._highlightRegExp) {
          this._highlight(outer, this.item.url);
        }
        this.setCellAccessibleName(this.item.url, cell, columnId);
        break;
      }
      case 'initiator': {
        const url = this.item.initiator.initiatorUrl || '';
        cell.textContent = url;
        cell.title = url;
        this.setCellAccessibleName(url, cell, columnId);
        cell.onmouseenter = () => {
          const frame = SDK.FrameManager.FrameManager.instance().getFrame(this.item.initiator.frameId || '');
          if (frame) {
            frame.highlight();
          }
        };
        cell.onmouseleave = () => SDK.OverlayModel.OverlayModel.hideDOMNodeHighlight();
        break;
      }
      case 'status': {
        if (this.item.success === null) {
          cell.textContent = ls`pending`;
        } else {
          cell.textContent = this.item.success ? ls`success` : ls`failure`;
        }
        break;
      }
      case 'size': {
        const size = this.item.size;
        if (size !== null) {
          const sizeSpan = cell.createChild('span');
          sizeSpan.textContent = Number.withThousandsSeparator(size);
          const sizeAccessibleName = (size === 1) ? ls`1 byte` : ls`${size} bytes`;
          this.setCellAccessibleName(sizeAccessibleName, cell, columnId);
        }
        break;
      }
      case 'errorMessage': {
        cell.classList.add('error-message');
        if (this.item.errorMessage) {
          cell.textContent = this.item.errorMessage;
          if (this._highlightRegExp) {
            this._highlight(cell, this.item.errorMessage);
          }
        }
        break;
      }
    }
    return cell;
  }

  /**
   * @param {!Element} element
   * @param {string} textContent
   */
  _highlight(element, textContent) {
    if (!this._highlightRegExp) {
      return;
    }
    const matches = this._highlightRegExp.exec(textContent);
    if (!matches || !matches.length) {
      return;
    }
    const range = new TextUtils.TextRange.SourceRange(matches.index, matches[0].length);
    UI.UIUtils.highlightRangesWithStyleClass(element, [range], 'filter-highlight');
  }

  /**
   *
   * @param {string} columnId
   * @returns {null|function(!GridNode, !GridNode):number}
   */
  static sortFunctionForColumn(columnId) {
    /**
     * @param {*} x
     */
    const nullToNegative = x => x === null ? -1 : Number(x);
    switch (columnId) {
      case 'url':
        return (a, b) => a.item.url.localeCompare(b.item.url);
      case 'status':
        return (a, b) => {
          return nullToNegative(a.item.success) - nullToNegative(b.item.success);
        };
      case 'size':
        return (a, b) => nullToNegative(a.item.size) - nullToNegative(b.item.size);
      case 'initiator':
        return (a, b) => (a.item.initiator.initiatorUrl || '').localeCompare(b.item.initiator.initiatorUrl || '');
      case 'errorMessage':
        return (a, b) => (a.item.errorMessage || '').localeCompare(b.item.errorMessage || '');
      default:
        console.assert(false, 'Unknown sort field: ' + columnId);
        return null;
    }
  }
}