/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "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 THE COPYRIGHT
 * OWNER 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.
 */

/* eslint-disable rulesdir/no_underscored_properties */

import * as Common from '../common/common.js';
import * as i18n from '../i18n/i18n.js';
import * as UI from '../ui/ui.js';

import {Events, IsolatedFileSystemManager} from './IsolatedFileSystemManager.js';
import {PlatformFileSystem} from './PlatformFileSystem.js';  // eslint-disable-line no-unused-vars

export const UIStrings = {
  /**
  *@description Text in Edit File System View of the Workspace settings in Settings
  */
  excludedFolders: 'Excluded folders',
  /**
  *@description Text to add something
  */
  add: 'Add',
  /**
  * @description Placeholder text for an area of the UI that shows which folders have been excluded
  * from being show in DevTools. When the user has not yet chosen any folders to exclude, this text
  * is shown.
  */
  none: 'None',
  /**
  *@description Text in Edit File System View of the Workspace settings in Settings
  *@example {file/path/} PH1
  */
  sViaDevtools: '{PH1} (via .devtools)',
  /**
  *@description Text in Edit File System View of the Workspace settings in Settings
  */
  folderPath: 'Folder path',
  /**
  *@description Error message when a file system path is an empty string.
  */
  enterAPath: 'Enter a path',
  /**
  *@description Error message when a file system path is identical to an existing path.
  */
  enterAUniquePath: 'Enter a unique path',
};
const str_ = i18n.i18n.registerUIStrings('persistence/EditFileSystemView.ts', UIStrings);
const i18nString = i18n.i18n.getLocalizedString.bind(undefined, str_);
export class EditFileSystemView extends UI.Widget.VBox implements UI.ListWidget.Delegate<string> {
  _fileSystemPath: string;
  _excludedFolders: string[];
  _eventListeners: Common.EventTarget.EventDescriptor[];
  _excludedFoldersList: UI.ListWidget.ListWidget<string>;
  _muteUpdate?: boolean;
  _excludedFolderEditor?: UI.ListWidget.Editor<string>;
  constructor(fileSystemPath: string) {
    super(true);
    this.registerRequiredCSS('persistence/editFileSystemView.css', {enableLegacyPatching: false});
    this._fileSystemPath = fileSystemPath;

    this._excludedFolders = [];

    this._eventListeners = [
      IsolatedFileSystemManager.instance().addEventListener(Events.ExcludedFolderAdded, this._update, this),
      IsolatedFileSystemManager.instance().addEventListener(Events.ExcludedFolderRemoved, this._update, this),
    ];

    const excludedFoldersHeader = this.contentElement.createChild('div', 'file-system-header');
    excludedFoldersHeader.createChild('div', 'file-system-header-text').textContent =
        i18nString(UIStrings.excludedFolders);
    excludedFoldersHeader.appendChild(UI.UIUtils.createTextButton(
        i18nString(UIStrings.add), this._addExcludedFolderButtonClicked.bind(this), 'add-button'));
    this._excludedFoldersList = new UI.ListWidget.ListWidget(this);
    this._excludedFoldersList.element.classList.add('file-system-list');
    this._excludedFoldersList.registerRequiredCSS('persistence/editFileSystemView.css', {enableLegacyPatching: false});
    const excludedFoldersPlaceholder = document.createElement('div');
    excludedFoldersPlaceholder.classList.add('file-system-list-empty');
    excludedFoldersPlaceholder.textContent = i18nString(UIStrings.none);
    this._excludedFoldersList.setEmptyPlaceholder(excludedFoldersPlaceholder);
    this._excludedFoldersList.show(this.contentElement);

    this._update();
  }

  dispose(): void {
    Common.EventTarget.EventTarget.removeEventListeners(this._eventListeners);
  }

  _getFileSystem(): PlatformFileSystem {
    return IsolatedFileSystemManager.instance().fileSystem(this._fileSystemPath) as PlatformFileSystem;
  }

  _update(): void {
    if (this._muteUpdate) {
      return;
    }

    this._excludedFoldersList.clear();
    this._excludedFolders = [];
    for (const folder of this._getFileSystem().excludedFolders().values()) {
      this._excludedFolders.push(folder);
      this._excludedFoldersList.appendItem(folder, true);
    }
  }

  _addExcludedFolderButtonClicked(): void {
    this._excludedFoldersList.addNewItem(0, '');
  }

  renderItem(item: string, editable: boolean): Element {
    const element = document.createElement('div');
    element.classList.add('file-system-list-item');
    const pathPrefix = editable ? item : i18nString(UIStrings.sViaDevtools, {PH1: item}) as string;
    const pathPrefixElement = element.createChild('div', 'file-system-value');
    pathPrefixElement.textContent = pathPrefix;
    UI.Tooltip.Tooltip.install(pathPrefixElement, pathPrefix);
    return element;
  }

  removeItemRequested(_item: string, index: number): void {
    this._getFileSystem().removeExcludedFolder(this._excludedFolders[index]);
  }

  commitEdit(item: string, editor: UI.ListWidget.Editor<string>, isNew: boolean): void {
    this._muteUpdate = true;
    if (!isNew) {
      this._getFileSystem().removeExcludedFolder(item);
    }
    this._getFileSystem().addExcludedFolder(this._normalizePrefix(editor.control('pathPrefix').value));
    this._muteUpdate = false;
    this._update();
  }

  beginEdit(item: string): UI.ListWidget.Editor<string> {
    const editor = this._createExcludedFolderEditor();
    editor.control('pathPrefix').value = item;
    return editor;
  }

  _createExcludedFolderEditor(): UI.ListWidget.Editor<string> {
    if (this._excludedFolderEditor) {
      return this._excludedFolderEditor;
    }

    const editor = new UI.ListWidget.Editor<string>();
    this._excludedFolderEditor = editor;
    const content = editor.contentElement();

    const titles = content.createChild('div', 'file-system-edit-row');
    titles.createChild('div', 'file-system-value').textContent = i18nString(UIStrings.folderPath);

    const fields = content.createChild('div', 'file-system-edit-row');
    fields.createChild('div', 'file-system-value')
        .appendChild(editor.createInput('pathPrefix', 'text', '/path/to/folder/', pathPrefixValidator.bind(this)));

    return editor;

    function pathPrefixValidator(
        this: EditFileSystemView, _item: string, index: number,
        input: HTMLInputElement|HTMLSelectElement): UI.ListWidget.ValidatorResult {
      const prefix = this._normalizePrefix(input.value.trim());

      if (!prefix) {
        return {valid: false, errorMessage: i18nString(UIStrings.enterAPath)};
      }

      const configurableCount = this._getFileSystem().excludedFolders().size;
      for (let i = 0; i < configurableCount; ++i) {
        if (i !== index && this._excludedFolders[i] === prefix) {
          return {valid: false, errorMessage: i18nString(UIStrings.enterAUniquePath)};
        }
      }
      return {valid: true, errorMessage: undefined};
    }
  }

  _normalizePrefix(prefix: string): string {
    if (!prefix) {
      return '';
    }
    return prefix + (prefix[prefix.length - 1] === '/' ? '' : '/');
  }
}