@instructure/canvas-rce/es/util/file-url-util.js

A component wrapping Canvas's usage of Tinymce

/*
 * Copyright (C) 2023 - present Instructure, Inc.
 *
 * This file is part of Canvas.
 *
 * Canvas is free software: you can redistribute it and/or modify it under
 * the terms of the GNU Affero General Public License as published by the Free
 * Software Foundation, version 3 of the License.
 *
 * Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 * A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Affero General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */

import * as URI from 'uri-js';
import { parseUrlOrNull } from './url-util';
const fileIdPatterns = [/\/\w+s\/\d+\/files\/(\d+)/];
export function guessCanvasFileIdFromUrl(inputUrlStr, restrictToOrigin) {
  const uri = URI.parse(inputUrlStr);
  if (restrictToOrigin != null) {
    const url = parseUrlOrNull(inputUrlStr);
    const originUrl = parseUrlOrNull(restrictToOrigin);
    if (url?.origin !== originUrl?.origin) {
      return null;
    }
  }
  if (uri.path == null || uri.path.length === 0) return null;
  for (const pattern of fileIdPatterns) {
    const match = uri.path.match(pattern);
    if (match) {
      return match[1];
    }
  }
  return null;
}