function ownKeys(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }
function _objectSpread(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { _defineProperty(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; }
function _defineProperty(e, r, t) { return (r = _toPropertyKey(r)) in e ? Object.defineProperty(e, r, { value: t, enumerable: !0, configurable: !0, writable: !0 }) : e[r] = t, e; }
function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == typeof i ? i : i + ""; }
function _toPrimitive(t, r) { if ("object" != typeof t || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != typeof i) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
/**
 * 
 * @file Recursively create folder and upload files
 * @author Box
 */
import noop from 'lodash/noop';
import { getFileFromEntry } from '../../utils/uploads';
import FolderAPI from '../Folder';
import { STATUS_COMPLETE, STATUS_ERROR, ERROR_CODE_UPLOAD_CHILD_FOLDER_FAILED, ERROR_CODE_ITEM_NAME_IN_USE, DEFAULT_RETRY_DELAY_MS, MS_IN_S } from '../../constants';
import sleep from '../../utils/sleep';
const CHILD_FOLDER_UPLOAD_CONCURRENCY = 3;
const MAX_RETRIES = 3;
class FolderUploadNode {
  /**
   * [constructor]
   *
   * @param {string} name
   * @param {Function} addFilesToUploadQueue
   * @param {Function} addFolderToUploadQueue
   * @returns {void}
   */
  constructor(_name, addFilesToUploadQueue, addFolderToUploadQueue, fileAPIOptions, baseAPIOptions, _entry) {
    _defineProperty(this, "files", []);
    _defineProperty(this, "folders", {});
    /**
     * Upload all child folders
     *
     * @private
     * @param {Function} errorCallback
     * @returns {Promise}
     */
    _defineProperty(this, "uploadChildFolders", async errorCallback => {
      // Gets FolderUploadNode values from this.folders key value pairs object
      // $FlowFixMe
      const folders = Object.values(this.folders);

      // Worker function: picks the next folder from the array and uploads until no more folders are available
      const worker = async () => {
        while (folders.length > 0) {
          const folder = folders.pop();
          if (folder) {
            // Await is needed to help ensure rate limit is respected
            // eslint-disable-next-line no-await-in-loop
            await folder.upload(this.folderId, errorCallback);
          }
        }
      };

      // Spawns up to CHILD_FOLDER_UPLOAD_CONCURRENCY workers that upload folders in parallel until folders array is empty
      const workers = [];
      for (let i = 0; i < CHILD_FOLDER_UPLOAD_CONCURRENCY && i < folders.length; i += 1) {
        workers.push(worker());
      }

      // Waits for all workers to finish
      await Promise.all(workers);
    });
    /**
     * Create folder and add it to the upload queue
     *
     * @private
     * @param {Function} errorCallback
     * @param {boolean} isRoot
     * @returns {Promise}
     */
    _defineProperty(this, "createAndUploadFolder", async (errorCallback, isRoot, retryCount = 0) => {
      await this.buildCurrentFolderFromEntry();
      let errorEncountered = false;
      let errorCode = '';
      try {
        const data = await this.createFolder();
        this.folderId = data.id;
      } catch (error) {
        if (error.code === ERROR_CODE_ITEM_NAME_IN_USE) {
          this.folderId = error.context_info.conflicts[0].id;
        } else if (error.status === 429 && retryCount < MAX_RETRIES) {
          // Set a default exponential backoff delay with a random jitter(0–999 ms) to avoid all requests being sent at once
          // This will be overridden if the Retry-After header is present in the response
          let retryAfterMs = DEFAULT_RETRY_DELAY_MS * 2 ** retryCount + Math.floor(Math.random() * 1000);
          if (error.headers) {
            const retryAfterHeaderSec = parseInt(error.headers['retry-after'] || error.headers.get('Retry-After'), 10);
            if (!Number.isNaN(retryAfterHeaderSec)) {
              retryAfterMs = retryAfterHeaderSec * MS_IN_S;
            }
          }
          await sleep(retryAfterMs);
          return this.createAndUploadFolder(errorCallback, isRoot, retryCount + 1);
        } else if (isRoot) {
          errorCallback(error);
        } else {
          // If this is a child folder of the folder being uploaded, this errorCallback will set
          // an error message on the root folder being uploaded. Set a generic messages saying that a
          // child has caused the error. The child folder will be tagged with the error message in
          // the call to this.addFolderToUploadQueue below
          errorEncountered = true;
          errorCode = error.code;
          errorCallback({
            code: ERROR_CODE_UPLOAD_CHILD_FOLDER_FAILED
          });
        }
      }

      // The root folder has already been added to the upload queue in ContentUploader
      if (isRoot) {
        return undefined;
      }
      const folderObject = {
        extension: '',
        name: this.name,
        options: _objectSpread(_objectSpread({}, this.fileAPIOptions), {}, {
          folderId: this.folderId,
          uploadInitTimestamp: Date.now()
        }),
        status: STATUS_COMPLETE,
        isFolder: true,
        size: 1,
        progress: 100
      };
      if (errorEncountered) {
        folderObject.status = STATUS_ERROR;
        folderObject.error = {
          code: errorCode
        };
      }
      this.addFolderToUploadQueue(folderObject);
      return undefined;
    });
    /**
     * Format files to Array<UploadFileWithAPIOptions> for upload
     *
     * @private
     * @returns {Array<UploadFileWithAPIOptions>}
     */
    _defineProperty(this, "getFormattedFiles", () => this.files.map(file => ({
      file,
      options: _objectSpread(_objectSpread({}, this.fileAPIOptions), {}, {
        folderId: this.folderId,
        uploadInitTimestamp: Date.now()
      })
    })));
    /**
     * Create FolderUploadNode instances from entries
     *
     * @private
     * @param {Array<FileSystemFileEntry>} entries
     * @returns {Promise<any>}
     */
    _defineProperty(this, "createFolderUploadNodesFromEntries", async entries => {
      await Promise.all(entries.map(async entry => {
        const {
          isFile,
          name
        } = entry;
        if (isFile) {
          const file = await getFileFromEntry(entry);
          this.files.push(file);
          return;
        }
        this.folders[name] = new FolderUploadNode(name, this.addFilesToUploadQueue, this.addFolderToUploadQueue, this.fileAPIOptions, _objectSpread(_objectSpread({}, this.baseAPIOptions), this.fileAPIOptions), entry);
      }));
    });
    /**
     * Recursively read an entry
     *
     * @private
     * @param {DirectoryReader} reader
     * @param {Function} resolve
     * @returns {void}
     */
    _defineProperty(this, "readEntry", (reader, resolve) => {
      reader.readEntries(async entries => {
        // Quit recursing when there are no remaining entries.
        if (!entries.length) {
          resolve();
          return;
        }
        await this.createFolderUploadNodesFromEntries(entries);
        this.readEntry(reader, resolve);
      }, noop);
    });
    /**
     * Build current folder from entry
     *
     * @private
     * @returns {Promise<any>}
     */
    _defineProperty(this, "buildCurrentFolderFromEntry", () => {
      if (!this.entry) {
        return Promise.resolve();
      }
      return new Promise(resolve => {
        // $FlowFixMe entry is not empty
        const reader = this.entry.createReader();
        this.readEntry(reader, resolve);
      });
    });
    /**
     * Returns the folderId
     * @returns {string}
     */
    _defineProperty(this, "getFolderId", () => {
      return this.folderId;
    });
    this.name = _name;
    this.addFilesToUploadQueue = addFilesToUploadQueue;
    this.addFolderToUploadQueue = addFolderToUploadQueue;
    this.fileAPIOptions = fileAPIOptions;
    this.baseAPIOptions = baseAPIOptions;
    this.entry = _entry;
  }

  /**
   * Upload a folder
   *
   * @public
   * @param {string} parentFolderId
   * @param {Function} errorCallback
   * @param {boolean} isRoot
   * @returns {Promise}
   */
  async upload(parentFolderId, errorCallback, isRoot = false) {
    this.parentFolderId = parentFolderId;
    await this.createAndUploadFolder(errorCallback, isRoot);

    // Check if folder was successfully created before we attempt to upload its contents.
    if (this.getFolderId()) {
      this.addFilesToUploadQueue(this.getFormattedFiles(), noop, true);
      await this.uploadChildFolders(errorCallback);
    }
  }
  /**
   * Promisify create folder
   *
   * @private
   * @returns {Promise}
   */
  createFolder() {
    const folderAPI = new FolderAPI(_objectSpread(_objectSpread({}, this.baseAPIOptions), {}, {
      id: `folder_${this.parentFolderId}`
    }));
    return new Promise((resolve, reject) => {
      folderAPI.create(this.parentFolderId, this.name, resolve, reject);
    });
  }
}
export default FolderUploadNode;
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