All files / src client.ts

92.97% Statements 1031/1109
87.44% Branches 383/438
92% Functions 92/100
92.94% Lines 1027/1105

Press n or j to go to the next uncovered block, b, p or k for the previous block.

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/* eslint-disable @typescript-eslint/no-unsafe-assignment, @typescript-eslint/no-unsafe-member-access */
 
import { config } from "dotenv";
config();
import Joi from "joi";
 
import UploadFilesCommand, { UploadFilesCommandOptions, SourceTargetFileNames } from "./command/uploadFilesCommand";
import UploadFolderCommand, { UploadFolderCommandOptions } from "./command/uploadFolderCommand";
import GetFilesRecursivelyCommand, { GetFilesRecursivelyCommandOptions } from "./command/getFilesRecursivelyCommand";
import DownloadFolderCommand, { DownloadFolderCommandOptions } from "./command/downloadFolderCommand";
import { CommandStatus, CommandResultMetaData } from "./command/command";
import parser from "fast-xml-parser";
import { Headers, RequestInit, Response } from "node-fetch";
import path, { basename } from "path";
import Environment from "./environment";
import EnvironmentVcapServices from "./environmentVcapServices";
import ClientError, {
  CommandAlreadyExecutedError,
  QueryLimitError,
  QueryOffsetError,
  InsufficientPrivilegesError,
  InvalidServiceResponseFormatError,
  OperationFailedError,
  UserGroupAlreadyExistsError,
  UserGroupDeletionFailedError,
  UserResendWelcomeEmailError,
  UserGroupDoesNotExistError,
  UserNotFoundError,
  UserAlreadyExistsError,
  UserCreateError,
  UserUpdateError,
} from "./error";
import FakeServer from "./fakeServer";
import File from "./file";
import FileSystemElement from "./fileSystemElement";
import FileSystemFolder, { IFileNameFormats } from "./fileSystemFolder";
import Folder, { FolderGetFilesOptions } from "./folder";
import { HttpClient, IHttpClientOptions, IProxy, IRequestContext } from "./httpClient";
import RequestResponseLog from "./requestResponseLog";
import RequestResponseLogEntry from "./requestResponseLogEntry";
import Server, { IServerOptions } from "./server";
import Share, { ICreateShare, SharePermission, ShareItemType } from "./share";
import Tag from "./tag";
import UserGroup from "./userGroup";
import User, { IUserOptions, IUserOptionsQuota, IUserQuotaUserFriendly, UserProperty } from "./user";
import Logger from "./logger";
import { isNumber } from "util";
const log: Logger = new Logger();
 
export {
  FolderGetFilesOptions,
  CommandAlreadyExecutedError,
  InvalidServiceResponseFormatError,
  InsufficientPrivilegesError,
  OperationFailedError,
  QueryLimitError,
  QueryOffsetError,
  UserNotFoundError,
  UserAlreadyExistsError,
  UserCreateError,
  UserResendWelcomeEmailError,
  UserUpdateError,
  UserGroupAlreadyExistsError,
  UserGroupDeletionFailedError,
  UserGroupDoesNotExistError,
};
 
export {
  Client,
  ClientError,
  Environment,
  Folder,
  File,
  FileSystemElement,
  ICreateShare,
  IServerOptions,
  Tag,
  FakeServer,
  Server,
  Share,
  SharePermission,
  RequestResponseLog,
  RequestResponseLogEntry,
  User,
  UserGroup,
  UserProperty,
  IUserOptionsQuota,
  IUserQuotaUserFriendly,
  ShareItemType,
};
 
// command object for upload
export {
  CommandResultMetaData,
  DownloadFolderCommand,
  DownloadFolderCommandOptions,
  GetFilesRecursivelyCommand,
  GetFilesRecursivelyCommandOptions,
  UploadFilesCommand,
  UploadFilesCommandOptions,
  UploadFolderCommand,
  UploadFolderCommandOptions,
  SourceTargetFileNames,
  FileSystemFolder,
  IFileNameFormats,
  CommandStatus,
};
 
interface IStat {
  type: string;
  filename: string;
  basename: string;
  lastmod: string;
  size?: number;
  mime?: string;
  fileid?: number;
}
 
export interface IUpsertUserOptions {
  id: string;
  enabled?: boolean;
  subadminGroups?: string[];
  memberGroups?: string[];
  quota?: string;
  email?: string;
  displayName?: string;
  password?: string;
  phone?: string;
  address?: string;
  website?: string;
  twitter?: string;
  language?: string;
  locale?: string;
  superAdmin?: boolean;
  resendWelcomeEmail?: boolean;
}
 
export interface IUserPropertyChange {
  property: string;
  previousValue: string;
  newValue: string;
  error?: string;
}
 
export interface IUpsertUserReport {
  id: string;
  message: string;
  changes: IUserPropertyChange[];
}
 
export interface ISysInfoNextcloudClient {
  version: string;
}
 
// @todo refactoring of type
export interface ISysInfoNextcloud {
  system: any;
  storage: any;
  shares: any;
}
 
export interface ISysBasicData {
  serverTimeString: string;
  uptimeString: string;
  timeServersString: string;
}
 
// @todo refactoring of type
export interface ISystemInfo {
  nextcloud: ISysInfoNextcloud;
  // @todo change object to something strongly typed
  server: any;
  // @todo change object to something strongly typed
  activeUsers: any;
  nextcloudClient: ISysInfoNextcloudClient;
}
 
export interface IQuota {
  used: number;
  available: number | string;
}
 
/**
 * The nextcloud client is the root object to access the remote api of the nextcloud server.<br>
 */
export default class Client {
  public static webDavUrlPath: string = "/remote.php/webdav";
 
  private nextcloudOrigin: string;
  private nextcloudAuthHeader: string;
  private nextcloudRequestToken: string;
  private webDAVUrl: string;
  private proxy?: IProxy;
  private fakeServer?: FakeServer;
  private logRequestResponse: boolean = false;
  private httpClient?: HttpClient;
  private userId: string;
 
  /**
   * Creates a new instance of a nextcloud client.<br/>
   * Use the server to provide server connectivity information to the client.<br/>
   * (The FakeServer is only used for testing and code coverage)<br/><br/>
   * If the server is not provided the client tries to find the connectivity information
   * in the environment.<br/>
   * If a <b>VCAP_SERVICES</b> environment variable is available, the client tries to find
   * a service with the name <b>"nextcloud"</b> in the user-provides-services section.<br/>
   * If no VCAP_SERVICES are available, the client uses the following variables
   * from the envirnonment for the connectivity:<br/>
   * <ul>
   * <li>NEXTCLOUD_URL - the url of the nextcloud server</li>
   * <li>NEXTCLOUD_USERNAME - the user name</li>
   * <li>NEXTCLOUD_PASSWORD - the application password</li>
   * </ul>
   * @param server optional server information to connection to a nextcloud server
   * @constructor
   */
  public constructor(server?: Server | FakeServer) {
    log.debug("constructor");
    this.nextcloudOrigin = "";
    this.nextcloudAuthHeader = "";
    this.nextcloudRequestToken = "";
    this.webDAVUrl = "";
    this.userId = "";
 
    // if no server is provided, try to get a server from VCAP_S environment "nextcloud" instance
    // If no VCAP_S environment exists try from environment
    if (!server) {
      try {
        const env: EnvironmentVcapServices = new EnvironmentVcapServices("nextcloud");
        server = env.getServer();
      } catch (e) {
        const serverOptions: IServerOptions = {
          url: Environment.getNextcloudUrl(),
          basicAuth: {
            username: Environment.getUserName(),
            password: Environment.getPassword(),
          },
          logRequestResponse: Environment.getRecordingActiveIndicator(),
        };
 
        server = new Server(serverOptions);
      }
    }
 
    if (server instanceof Server) {
      this.proxy = server.proxy;
 
      log.debug("constructor: url ", server.url);
 
      if (server.url.indexOf(Client.webDavUrlPath) === -1) {
        if (server.url.slice(-1) === "/") {
          server.url = server.url.slice(0, -1);
        }
        server.url = server.url + Client.webDavUrlPath;
      }
 
      this.nextcloudOrigin = server.url.substr(0, server.url.indexOf(Client.webDavUrlPath));
 
      log.debug("constructor: nextcloud url ", this.nextcloudOrigin);
      this.userId = server.basicAuth.username;
      this.nextcloudAuthHeader = "Basic " + Buffer.from(server.basicAuth.username + ":" + server.basicAuth.password).toString("base64");
      this.nextcloudRequestToken = "";
      if (server.url.slice(-1) === "/") {
        this.webDAVUrl = server.url.slice(0, -1);
      } else {
        this.webDAVUrl = server.url;
      }
 
      this.logRequestResponse = server.logRequestResponse;
 
      const options: IHttpClientOptions = {
        authorizationHeader: this.nextcloudAuthHeader,
        logRequestResponse: this.logRequestResponse,
        origin: this.nextcloudOrigin,
        proxy: this.proxy,
      };
 
      this.httpClient = new HttpClient(options);
    }
 
    if (server instanceof FakeServer) {
      this.fakeServer = server;
      this.webDAVUrl = "https://fake.server" + Client.webDavUrlPath;
    }
  }
 
  /**
   * returns the used and free quota of the nextcloud account
   */
  public async getQuota(): Promise<IQuota> {
    log.debug("getQuota");
    const requestInit: RequestInit = {
      method: "PROPFIND",
    };
 
    const response: Response = await this.getHttpResponse(this.webDAVUrl + "/", requestInit, [207], { description: "Client get quota" });
 
    const properties: any[] = await this.getPropertiesFromWebDAVMultistatusResponse(response, Client.webDavUrlPath + "/");
 
    let quota: IQuota | null = null;
    for (const prop of properties) {
      if (prop["quota-available-bytes"]) {
        quota = {
          available: "unlimited",
          used: prop["quota-used-bytes"],
        };
        if (prop["quota-available-bytes"] > 0) {
          quota.available = prop["quota-available-bytes"];
        }
      }
    }
 
    if (!quota) {
      log.debug("Error, quota not available: ", JSON.stringify(properties, null, 4));
      throw new ClientError(`Error, quota not available`, "ERR_QUOTA_NOT_AVAILABLE");
    }
    log.debug("getQuota =", quota);
    return quota;
  }
 
  // ***************************************************************************************
  // tags
  // ***************************************************************************************
 
  /**
   * creates a new tag, if not already existing
   * this function will fail with http 403 if the user does not have admin privileges
   * @param tagName the name of the tag
   * @returns tagId
   */
  public async createTag(tagName: string): Promise<Tag> {
    log.debug("createTag");
    let tag: Tag | null;
    // is the tag already existing?
    tag = await this.getTagByName(tagName);
    if (tag) {
      return tag;
    }
    // tag does not exist, create tag
 
    const requestInit: RequestInit = {
      body: `{ "name": "${tagName}", "userVisible": true, "userAssignable": true, "canAssign": true }`,
      // eslint-disable-next-line @typescript-eslint/naming-convention
      headers: new Headers({ "Content-Type": "application/json" }),
      method: "POST",
    };
 
    const response: Response = await this.getHttpResponse(this.nextcloudOrigin + "/remote.php/dav/systemtags/", requestInit, [201], { description: "Tag create" });
    const tagString: string | null = response.headers.get("Content-Location");
 
    if (tagString === "" || tagString === null) {
      log.error(`createTag 'tagName' ${tagName}`);
      throw new ClientError(`Error, tag with name '${tagName}' could not be created`, "ERR_TAG_CREATE_FAILED");
    }
    log.debug(`createTag new tagId ${tagString} tagName ${tagName}`);
 
    // the number id of the tag is the last element in the id (path)
    const tagId: number = this.getTagIdFromHref(tagString);
 
    tag = new Tag(this, tagId, tagName, true, true, true);
    return tag;
  }
 
  /**
   * returns a tag identified by the name or null if not found
   * @param tagName the name of the tag
   * @returns tag or null
   */
  public async getTagByName(tagName: string): Promise<Tag | null> {
    log.debug("getTag");
 
    const tags: Tag[] = await this.getTags();
    for (const tag of tags) {
      if (tag.name === tagName) {
        return tag;
      }
    }
    return null;
  }
 
  /**
   * returns a tag identified by the id or null if not found
   * @param tagId the id of the tag
   * @returns tag or null
   */
  public async getTagById(tagId: number): Promise<Tag | null> {
    log.debug("getTagById");
 
    const tags: Tag[] = await this.getTags();
    for (const tag of tags) {
      if (tag.id === tagId) {
        return tag;
      }
    }
    return null;
  }
 
  /**
   * deletes the tag by id
   * this function will fail with http 403 if the user does not have admin privileges
   * @param tagId the id of the tag like "/remote.php/dav/systemtags/234"
   */
  public async deleteTag(tagId: number): Promise<void> {
    log.debug("deleteTag tagId: ", tagId);
 
    const requestInit: RequestInit = {
      method: "DELETE",
    };
 
    const response: Response = await this.getHttpResponse(`${this.nextcloudOrigin}/remote.php/dav/systemtags/${tagId}`, requestInit, [204, 404], { description: "Tag delete" });
  }
 
  /**
   * deletes all visible assignable tags
   * @throws Error
   */
  public async deleteAllTags(): Promise<void> {
    log.debug("deleteAllTags");
 
    const tags: Tag[] = await this.getTags();
 
    for (const tag of tags) {
      // log.debug("deleteAllTags tag: ", tag);
      await tag.delete();
    }
  }
 
  /**
   * returns a list of tags
   * @returns array of tags
   */
  public async getTags(): Promise<Tag[]> {
    log.debug("getTags PROPFIND " + this.nextcloudOrigin + "/remote.php/dav/systemtags/");
    const requestInit: RequestInit = {
      body: `<?xml version="1.0"?>
            <d:propfind  xmlns:d="DAV:" xmlns:oc="http://owncloud.org/ns">
              <d:prop>
                <oc:id />
                <oc:display-name />
                <oc:user-visible />
                <oc:user-assignable />
                <oc:can-assign />
              </d:prop>
            </d:propfind>`,
      method: "PROPFIND",
    };
 
    const relUrl = `/remote.php/dav/systemtags/`;
 
    const response: Response = await this.getHttpResponse(this.nextcloudOrigin + relUrl, requestInit, [207], { description: "Tags get" });
 
    const properties: any[] = await this.getPropertiesFromWebDAVMultistatusResponse(response, relUrl + "/*");
    const tags: Tag[] = [];
 
    for (const prop of properties) {
      // eslint-disable-next-line no-underscore-dangle
      tags.push(new Tag(this, this.getTagIdFromHref(prop._href), prop["display-name"], prop["user-visible"], prop["user-assignable"], prop["can-assign"]));
    }
 
    return tags;
  }
 
  /**
   * returns the list of tag names and the tag ids
   * @param fileId the id of the file
   */
  public async getTagsOfFile(fileId: number): Promise<Map<string, number>> {
    log.debug("getTagsOfFile");
 
    const requestInit: RequestInit = {
      body: `<?xml version="1.0"?>
            <d:propfind  xmlns:d="DAV:" xmlns:oc="http://owncloud.org/ns">
              <d:prop>
                <oc:id />
                <oc:display-name />
                <oc:user-visible />
                <oc:user-assignable />
                <oc:can-assign />
              </d:prop>
            </d:propfind>`,
      method: "PROPFIND",
    };
 
    const relUrl = `/remote.php/dav/systemtags-relations/files/${fileId}`;
    const response: Response = await this.getHttpResponse(`${this.nextcloudOrigin}${relUrl}`, requestInit, [207], { description: "File get tags" });
 
    const properties: any[] = await this.getPropertiesFromWebDAVMultistatusResponse(response, relUrl + "/*");
    // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
    const tagMap: Map<string, number> = new Map();
 
    for (const prop of properties) {
      tagMap.set(prop["display-name"], prop.id);
    }
 
    log.debug("tags of file ", tagMap);
    return tagMap;
  }
 
  /**
   * removes the tag from the file
   * @param fileId the file id
   * @param tagId the tag id
   */
  public async removeTagOfFile(fileId: number, tagId: number): Promise<void> {
    log.debug(`removeTagOfFile tagId: ${tagId} fileId:${fileId}`);
 
    const requestInit: RequestInit = {
      method: "DELETE",
    };
 
    await this.getHttpResponse(`${this.nextcloudOrigin}/remote.php/dav/systemtags-relations/files/${fileId}/${tagId}`, requestInit, [204, 404], { description: "File remove tag" });
    return;
  }
 
  /**
   * returns the id of the file or -1 of not found
   * @returns id of the file or -1 if not found
   */
  public async getFileId(fileUrl: string): Promise<number> {
    log.debug("getFileId");
 
    const requestInit: RequestInit = {
      body: `
            <d:propfind  xmlns:d="DAV:" xmlns:oc="http://owncloud.org/ns" xmlns:nc="http://nextcloud.org/ns">
              <d:prop>
                  <oc:fileid />
              </d:prop>
            </d:propfind>`,
      method: "PROPFIND",
    };
 
    const response: Response = await this.getHttpResponse(fileUrl, requestInit, [207], { description: "File get id" });
 
    const properties: any[] = await this.getPropertiesFromWebDAVMultistatusResponse(response, "");
 
    for (const prop of properties) {
      if (prop.fileid !== undefined) {
        Eif (typeof prop.fileid === "number") {
          return prop.fileid as number;
        } else {
          return -1;
        }
      }
    }
 
    log.debug("getFileId no file id found for " + fileUrl);
    return -1;
  }
 
  public async getFolderContents(folderName: string): Promise<any[]> {
    log.debug("getFolderContents");
 
    const requestInit: RequestInit = {
      body: `<?xml version="1.0"?>
            <d:propfind  xmlns:d="DAV:" xmlns:oc="http://owncloud.org/ns" xmlns:nc="http://nextcloud.org/ns" xmlns:ocs="http://open-collaboration-services.org/ns">
              <d:prop>
                <d:getlastmodified />
                <d:getetag />
                <d:getcontenttype />
                <d:resourcetype />
                <oc:fileid />
                <oc:permissions />
                <oc:size />
                <d:getcontentlength />
                <nc:has-preview />
                <nc:mount-type />
                <nc:is-encrypted />
                <ocs:share-permissions />
                <oc:tags />
                <oc:favorite />
                <oc:comments-unread />
                <oc:owner-id />
                <oc:owner-display-name />
                <oc:share-types />
              </d:prop>
            </d:propfind>`,
      method: "PROPFIND",
    };
    const url = `${this.webDAVUrl}${folderName}`;
    const response: Response = await this.getHttpResponse(url, requestInit, [207], { description: "Folder get contents" });
    const folderContents: any[] = [];
 
    const schema: Joi.ObjectSchema = Joi.object({
      _href: Joi.string().required(),
      getlastmodified: Joi.string().required(),
      fileid: Joi.number().integer().required(),
      getcontenttype: Joi.string(),
      getcontentlength: Joi.number().integer(),
    });
 
    const properties: any[] = await this.getPropertiesFromWebDAVMultistatusResponse(response, "");
 
    // validate the properties
    const { error, value } = schema.validate(properties);
    Eif (error) {
      throw new ClientError(`Error get folder contents - folder name "${folderName}" error ${error.message};`, "INVALID");
    }
 
    for (const prop of properties) {
      // eslint-disable-next-line @typescript-eslint/no-unsafe-call, no-underscore-dangle, @typescript-eslint/restrict-plus-operands
      let fileName = decodeURI(prop._href.substr(prop._href.indexOf(Client.webDavUrlPath) + 18));
      if (fileName.endsWith("/")) {
        fileName = fileName.slice(0, -1);
      }
      // eslint-disable-next-line no-underscore-dangle
      if ((url + "/").endsWith(decodeURI(prop._href))) {
        continue;
      }
      const folderContentsEntry: any = {};
      folderContentsEntry.lastmod = prop.getlastmodified;
      folderContentsEntry.fileid = prop.fileid;
      folderContentsEntry.basename = fileName.split("/").reverse()[0];
      folderContentsEntry.filename = fileName;
      if (prop.getcontenttype) {
        folderContentsEntry.mime = prop.getcontenttype;
        folderContentsEntry.size = prop.getcontentlength;
        folderContentsEntry.type = "file";
      } else {
        folderContentsEntry.type = "directory";
      }
      // if (folderContentsEntry.basename !== "") {
      folderContents.push(folderContentsEntry);
      // }
    }
 
    // log.debug("folderContentsEntry ", JSON.stringify(folderContents, null, 4));
    // eslint-disable-next-line @typescript-eslint/no-unsafe-return
    return folderContents;
  }
 
  /**
   * creates a folder and all parent folders in the path if they do not exist
   * @param folderName name of the folder /folder/subfolder/subfolder
   * @returns a folder object
   */
  public async createFolder(folderName: string): Promise<Folder> {
    folderName = this.sanitizeFolderName(folderName);
    log.debug("createFolder: folderName=", folderName);
 
    const parts1: string[] = folderName.split("/");
    for (const p of parts1) {
      if (p === "." || p === "..") {
        throw new ClientError(`Error creating folder, folder name "${folderName}" invalid`, "ERR_CREATE_FOLDER_INVALID_FOLDER_NAME");
      }
    }
 
    let folder: Folder | null;
 
    folder = await this.getFolder(folderName);
    if (folder) {
      log.debug("createFolder: folder already available ", folder.name);
      return folder;
    } else {
      // try to do a simple create with the complete path
      try {
        log.debug("createFolder: folder = ", folderName);
        await this.createFolderInternal(folderName);
      } catch (e) {
        // create all folders in the path
        const parts: string[] = folderName.split("/");
        parts.shift();
        let folderPath: string = "";
        log.debug("createFolder: parts = ", parts);
 
        for (const part of parts) {
          log.debug("createFolder: part = ", part);
          folderPath += "/" + part;
          folder = await this.getFolder(folderPath);
 
          if (folder === null) {
            log.debug("createFolder: folder not available");
            // folder not  available
 
            log.debug("createFolder: folder = ", folderPath);
            await this.createFolderInternal(folderPath);
          } else {
            log.debug("createFolder: folder already available ", folderPath);
          }
        }
      }
    }
 
    folder = await this.getFolder(folderName);
    if (folder) {
      log.debug("createFolder: new folder ", folder.name);
      return folder;
    } else {
      throw new ClientError(
        `Error creating folder, folder name "${folderName}"
            `,
        "ERR_CREATE_FOLDER_FAILED"
      );
    }
  }
 
  /**
   * deletes a file
   * @param fileName name of folder "/f1/f2/f3/x.txt"
   */
  public async deleteFile(fileName: string): Promise<void> {
    const url: string = this.webDAVUrl + fileName;
    log.debug("deleteFile ", url);
 
    const requestInit: RequestInit = {
      method: "DELETE",
    };
    try {
      await this.getHttpResponse(url, requestInit, [204], { description: "File delete" });
    } catch (err) {
      log.debug("Error in deleteFile ", err.message, requestInit.method, url);
      throw err;
    }
  }
 
  /**
   * deletes a folder
   * @param folderName name of folder "/f1/f2/f3"
   */
  public async deleteFolder(folderName: string): Promise<void> {
    folderName = this.sanitizeFolderName(folderName);
    log.debug("deleteFolder:");
 
    const folder: Folder | null = await this.getFolder(folderName);
 
    if (folder) {
      await this.deleteFile(folderName);
    }
  }
 
  /**
   * get the root folder object
   * @returns {Promise<Folder>} the root folder
   */
  public getRootFolder(): Folder {
    return new Folder(this, "/", "", "");
  }
 
  /**
   * returns an array of file system objects that have all given tags assigned (AND)
   * @param {Tag[]} tags array of tags
   * @async
   * @returns {Promise<FileSystemElement[]>} returns an array of file system objects
   */
  public async getFileSystemElementByTags(tags: Tag[]): Promise<FileSystemElement[]> {
    log.debug("getFileSystemElementByTags ", tags.join(", "));
    let filterRule: string = "";
 
    for (const tag of tags) {
      filterRule += `<oc:systemtag>${tag.id}</oc:systemtag>`;
    }
    const urlSuffix = `/remote.php/dav/files/`;
    const url = `${this.nextcloudOrigin}${urlSuffix}${this.userId}`;
    const body = `<?xml version="1.0"?>
        <oc:filter-files  xmlns:d=\"DAV:\" xmlns:oc=\"http://owncloud.org/ns\" xmlns:nc=\"http://nextcloud.org/ns\" xmlns:ocs=\"http://open-collaboration-services.org/ns\">
           <d:prop>
              <d:getcontenttype />
              <oc:fileid />
           </d:prop>
           <oc:filter-rules>
                ${filterRule}
           </oc:filter-rules>
        </oc:filter-files>`;
    const requestInit: RequestInit = {
      body,
      // headers: new Headers({ Depth: "0" }),
      method: "REPORT",
    };
    let response: Response;
    try {
      response = await this.getHttpResponse(url, requestInit, [207], { description: "Get FileSystemElements by tags" });
    } catch (err) {
      log.debug("Error in stat ", err.message, requestInit.method, url);
      throw err;
    }
    const result: FileSystemElement[] = [];
 
    let properties: any[] = [];
    try {
      properties = await this.getPropertiesFromWebDAVMultistatusResponse(response, "");
    } catch (e) {
      return result;
    }
 
    for (const prop of properties) {
      let fse: FileSystemElement | null = null;
      // eslint-disable-next-line no-underscore-dangle
      let name: string = prop._href;
 
      // remove the first two elements from the path
      name = name.replace(urlSuffix, "");
      const a: string[] = name.split("/");
      a.shift();
      name = "/" + a.join("/");
      // console.log(name);
      if (prop.getcontenttype) {
        fse = await this.getFile(name);
      } else {
        fse = await this.getFolder(name);
      }
 
      result.push(fse!);
    }
    return result;
  }
 
  /**
   * get a folder object from a path string
   * @param {string} folderName Name of the folder like "/company/branches/germany"
   * @returns {Promise<Folder | null>} null if the folder does not exist or an folder object
   */
  public async getFolder(folderName: string): Promise<Folder | null> {
    folderName = this.sanitizeFolderName(folderName);
    log.debug("getFolder", folderName);
 
    // return root folder
    if (folderName === "/" || folderName === "") {
      return this.getRootFolder();
    }
 
    try {
      const stat: IStat = await this.stat(folderName);
      log.debug(": SUCCESS!!");
      if (stat.type !== "file") {
        return new Folder(this, stat.filename.replace(/\\/g, "/"), stat.basename, stat.lastmod, stat.fileid);
      } else {
        log.debug("getFolder: found object is file not a folder");
        return null;
      }
    } catch (e) {
      log.debug("getFolder: exception occurred calling stat ", e.message);
      return null;
    }
  }
 
  /**
   * get a array of folders from a folder path string
   * @param folderName Name of the folder like "/company/branches/germany"
   * @returns array of folder objects
   */
  public async getSubFolders(folderName: string): Promise<Folder[]> {
    log.debug("getSubFolders: folder ", folderName);
    const folders: Folder[] = [];
    folderName = this.sanitizeFolderName(folderName);
 
    const folderElements: any[] = await this.contents(folderName, true);
 
    for (const folderElement of folderElements) {
      log.debug("getSubFolders: adding subfolders ", folderElement.filename);
      // eslint-disable-next-line @typescript-eslint/no-unsafe-call
      folders.push(new Folder(this, folderElement.filename.replace(/\\/g, "/"), folderElement.basename, folderElement.lastmod, folderElement.fileid));
    }
 
    return folders;
  }
 
  /**
   * get files of a folder
   * @param {string} folderName Name of the folder like "/company/branches/germany"
   * @param {FolderGetFilesOptions} options options for filtering and paging
   * @returns array of file objects
   */
  public async getFiles(folderName: string, options?: FolderGetFilesOptions): Promise<File[]> {
    log.debug("getFiles: folder ", folderName);
    const files: File[] = [];
    folderName = this.sanitizeFolderName(folderName);
 
    const fileElements: any[] = await this.contents(folderName, false);
 
    for (const folderElement of fileElements) {
      log.debug("getFiles: adding file ", folderElement.filename);
      // log.debug("getFiles: adding file ", folderElement);
      // eslint-disable-next-line @typescript-eslint/no-unsafe-call
      let file: File | null = new File(this, folderElement.filename.replace(/\\/g, "/"), folderElement.basename, folderElement.lastmod, folderElement.size, folderElement.mime, folderElement.fileid);
 
      if (options && options.filterFile) {
        file = options.filterFile(file);
      }
      if (file) {
        files.push(file);
      }
    }
 
    return files;
  }
 
  /**
   * create a new file of overwrites an existing file
   * @param fileName the file name /folder1/folder2/filename.txt
   * @param data the buffer object
   */
  public async createFile(fileName: string, data: Buffer | NodeJS.ReadableStream): Promise<File> {
    if (fileName.startsWith("./")) {
      fileName = fileName.replace("./", "/");
    }
 
    const baseName: string = path.basename(fileName);
    const folderName: string = path.dirname(fileName);
 
    log.debug(`createFile folder name ${folderName} base name ${baseName}`);
 
    // ensure that we have a folder
    await this.createFolder(folderName);
    await this.putFileContents(fileName, data);
 
    const file: File | null = await this.getFile(fileName);
 
    if (!file) {
      throw new ClientError(`Error creating file, file name "${fileName}"`, "ERR_CREATE_FILE_FAILED");
    }
    return file;
  }
 
  /**
   * returns a nextcloud file object
   * @param fileName the full file name /folder1/folder2/file.pdf
   */
  public async getFile(fileName: string): Promise<File | null> {
    log.debug("getFile fileName = ", fileName);
 
    try {
      const stat: IStat = await this.stat(fileName);
      log.debug(": SUCCESS!!");
      Eif (stat.type === "file") {
        return new File(this, stat.filename.replace(/\\/g, "/"), stat.basename, stat.lastmod, stat.size!, stat.mime || "", stat.fileid || -1);
      } else {
        log.debug("getFile: found object is a folder not a file");
        return null;
      }
    } catch (e) {
      log.debug("getFile: exception occurred calling stat ", e.message);
      return null;
    }
  }
 
  /**
   * renames the file or moves it to an other location
   * @param sourceFileName source file name
   * @param targetFileName target file name
   */
  public async moveFile(sourceFileName: string, targetFileName: string): Promise<File> {
    const url: string = this.webDAVUrl + sourceFileName;
    const destinationUrl: string = this.webDAVUrl + targetFileName;
 
    log.debug("moveFile from '" + url + "' to '" + destinationUrl + "'");
 
    const requestInit: RequestInit = {
      // eslint-disable-next-line @typescript-eslint/naming-convention
      headers: new Headers({ Destination: destinationUrl }),
      method: "MOVE",
    };
    try {
      await this.getHttpResponse(url, requestInit, [201], { description: "File move" });
    } catch (err) {
      log.debug(`Error in move file ${err.message as string} ${requestInit.method || ""} source: ${url} destination: ${destinationUrl}`);
      throw new ClientError(`Error: moving file failed: source=" ${sourceFileName} target= ${targetFileName} - ${err.message as string}`, "ERR_FILE_MOVE_FAILED");
    }
 
    const targetFile: File | null = await this.getFile(targetFileName);
    if (!targetFile) {
      throw new ClientError("Error: moving file failed: source=" + sourceFileName + " target=" + targetFileName, "ERR_FILE_MOVE_FAILED");
    }
 
    return targetFile;
  }
 
  /**
   * renames the folder or moves it to an other location
   * @param sourceFolderName source folder name
   * @param tarName target folder name
   */
  public async moveFolder(sourceFolderName: string, tarName: string): Promise<Folder> {
    const url: string = this.webDAVUrl + sourceFolderName;
    const destinationUrl: string = this.webDAVUrl + tarName;
 
    log.debug(`moveFolder from '${url}' to '${destinationUrl}'`);
 
    const requestInit: RequestInit = {
      // eslint-disable-next-line @typescript-eslint/naming-convention
      headers: new Headers({ Destination: destinationUrl }),
      method: "MOVE",
    };
    try {
      await this.getHttpResponse(url, requestInit, [201], { description: "Folder move" });
    } catch (err) {
      log.debug(`Error in move folder ${err.message as string} ${requestInit.method || ""} source: ${url} destination: ${destinationUrl}`);
      throw new ClientError(`Error: moving folder failed: source=${sourceFolderName} target=${tarName} - ${err.message as string}`, "ERR_FOLDER_MOVE_FAILED");
    }
 
    const tar: Folder | null = await this.getFolder(tarName);
    if (!tar) {
      throw new ClientError("Error: moving folder failed: source=" + sourceFolderName + " target=" + tarName, "ERR_FOLDER_MOVE_FAILED");
    }
 
    return tar;
  }
 
  /**
   * returns the content of a file
   * @param fileName name of the file /d1/file1.txt
   * @returns Buffer with file content
   */
  public async getContent(fileName: string): Promise<Buffer> {
    const url = this.webDAVUrl + fileName;
    log.debug("getContent GET ", url);
    const requestInit: RequestInit = {
      method: "GET",
    };
    let response: Response;
    try {
      response = await this.getHttpResponse(url, requestInit, [200], { description: "File get content" });
    } catch (err) {
      log.debug(`Error getContent ${url} - error ${err.message as string}`);
      throw err;
    }
 
    return Buffer.from(await response.buffer());
  }
 
  /**
   * returns the content of a file
   * @param fileName name of the file /d1/file1.txt
   * @returns Buffer with file content
   */
  public async pipeContentStream(fileName: string, destination: NodeJS.WritableStream): Promise<void> {
    const url = this.webDAVUrl + fileName;
    log.debug("getContent GET ", url);
    const requestInit: RequestInit = {
      method: "GET",
    };
    let response: Response;
    try {
      response = await this.getHttpResponse(url, requestInit, [200], { description: "File pipe content stream" });
    } catch (err) {
      log.debug(`Error getContent ${url} - error ${err.message as string}`);
      throw err;
    }
    response.body.pipe(destination);
  }
 
  /**
   * returns the link to a file for downloading
   * @param fileName name of the file /folder1/folder1.txt
   * @returns url
   */
  public getLink(fileName: string): string {
    log.debug("getLink of ", fileName);
    return this.webDAVUrl + fileName;
  }
 
  /**
   * returns the url to the file in the nextcloud UI
   * @param fileId the id of the file
   */
  public getUILink(fileId: number): string {
    log.debug("getUILink of ", fileId);
    return `${this.nextcloudOrigin}/apps/files/?fileid=${fileId}`;
  }
 
  /**
   * adds a tag to a file or folder
   * if the tag does not exist, it is automatically created
   * if the tag is created, the user must have damin privileges
   * @param fileId the id of the file
   * @param tagName the name of the tag
   * @returns nothing
   * @throws Error
   */
  public async addTagToFile(fileId: number, tagName: string): Promise<void> {
    log.debug(`addTagToFile file: "${fileId}" tag: "${tagName}"`);
    const tag: Tag = await this.createTag(tagName);
 
    if (!tag.canAssign) {
      throw new ClientError(`Error: No permission to assign tag "${tagName}" to file. Tag is not assignable`, "ERR_TAG_NOT_ASSIGNABLE");
    }
 
    const addTagBody: any = {
      canAssign: tag.canAssign,
      id: tag.id,
      name: tag.name,
      userAssignable: tag.assignable,
      userVisible: tag.visible,
    };
 
    const requestInit: RequestInit = {
      body: JSON.stringify(addTagBody, null, 4),
      // eslint-disable-next-line @typescript-eslint/naming-convention
      headers: new Headers({ "Content-Type": "application/json" }),
      method: "PUT",
    };
 
    await this.getHttpResponse(`${this.nextcloudOrigin}/remote.php/dav/systemtags-relations/files/${fileId}/${tag.id}`, requestInit, [201, 409], { description: "File add tag" }); // created or conflict
  }
 
  // ***************************************************************************************
  // activity
  // ***************************************************************************************
  /*
    @todo to be refactored to eventing
 
    public async getActivities(): Promise<string[]> {
        const result: string[] = [];
        const requestInit: RequestInit = {
            headers: new Headers({ "ocs-apirequest": "true" }),
            method: "GET",
        };
 
        const response: Response = await this.getHttpResponse(
            this.nextcloudOrigin + "/ocs/v2.php/apps/activity/api/v2/activity/files?format=json&previews=false&since=97533",
            requestInit,
            [200],
            { description: "Activities get" });
 
        const responseObject: any = await response.json();
        // @todo
 
        for (const res of responseObject.ocs.data) {
            log.debug(JSON.stringify({
                acivityId: res.activity_id,
                objects: res.objects,
                type: res.type,
            }, null, 4));
        }
 
        // log.debug("getActivities: responseObject ", JSON.stringify(responseObject, null, 4));
 
        return result;
    }
*/
  // ***************************************************************************************
  // comments
  // ***************************************************************************************
 
  /**
   * adds a comment to a file
   * @param fileId the id of the file
   * @param comment the comment to be added to the file
   */
  public async addCommentToFile(fileId: number, comment: string): Promise<void> {
    log.debug(`addCommentToFile file:"${fileId}" comment:"${comment}"`);
 
    const addCommentBody: any = {
      actorType: "users",
      message: comment,
      objectType: "files",
      verb: "comment",
    };
 
    const requestInit: RequestInit = {
      body: JSON.stringify(addCommentBody, null, 4),
      // eslint-disable-next-line @typescript-eslint/naming-convention
      headers: new Headers({ "Content-Type": "application/json" }),
      method: "POST",
    };
 
    await this.getHttpResponse(`${this.nextcloudOrigin}/remote.php/dav/comments/files/${fileId}`, requestInit, [201], { description: "File add comment" }); // created
  }
 
  /**
   * returns comments of a file / folder
   * @param fileId the id of the file / folder
   * @param top number of comments to return
   * @param skip the offset
   * @returns array of comment strings
   * @throws Exception
   */
  public async getFileComments(fileId: number, top?: number, skip?: number): Promise<string[]> {
    log.debug("getFileComments fileId: ", fileId);
    if (!top) {
      top = 30;
    }
 
    if (!skip) {
      skip = 0;
    }
 
    const requestInit: RequestInit = {
      body: `<?xml version="1.0" encoding="utf-8" ?>
                    <oc:filter-comments xmlns:D="DAV:" xmlns:oc="http://owncloud.org/ns">
                        <oc:limit>${top}</oc:limit>
                        <oc:offset>${skip}</oc:offset>
                    </oc:filter-comments>`,
      method: "REPORT",
    };
 
    const response: Response = await this.getHttpResponse(`${this.nextcloudOrigin}/remote.php/dav/comments/files/${fileId}`, requestInit, [207], { description: "File get comments" });
 
    const properties: any[] = await this.getPropertiesFromWebDAVMultistatusResponse(response, "");
    const comments: string[] = [];
    for (const prop of properties) {
      comments.push(prop.message);
    }
 
    return comments;
  }
 
  /**
   * returns system information about the nextcloud server and the nextcloud client
   */
  public async getSystemInfo(): Promise<ISystemInfo> {
    const requestInit: RequestInit = {
      headers: this.getOcsHeaders(),
      method: "GET",
    };
 
    const response: Response = await this.getHttpResponse(this.nextcloudOrigin + "/ocs/v2.php/apps/serverinfo/api/v1/info", requestInit, [200], { description: "SystemInfo get" });
 
    const rawResult: any = await response.json();
    // validate the raw result
    let system = {};
    let storage = {};
    let shares = {};
    let server = {};
    let activeUsers = {};
 
    if (rawResult && rawResult.ocs && rawResult.ocs.data) {
      if (rawResult.ocs.data.nextcloud) {
        if (rawResult.ocs.data.nextcloud.system) {
          system = rawResult.ocs.data.nextcloud.system;
        } else {
          throw new ClientError("Fatal Error: nextcloud data.nextcloud.system missing", "ERR_SYSTEM_INFO_MISSING_DATA");
        }
 
        if (rawResult.ocs.data.nextcloud.storage) {
          storage = rawResult.ocs.data.nextcloud.storage;
        } else {
          throw new ClientError("Fatal Error: nextcloud data.nextcloud.storage missing", "ERR_SYSTEM_INFO_MISSING_DATA");
        }
 
        if (rawResult.ocs.data.nextcloud.shares) {
          shares = rawResult.ocs.data.nextcloud.shares;
        } else {
          throw new ClientError("Fatal Error: nextcloud data.nextcloud.shares missing", "ERR_SYSTEM_INFO_MISSING_DATA");
        }
      } else {
        throw new ClientError("Fatal Error: nextcloud data.nextcloud missing", "ERR_SYSTEM_INFO_MISSING_DATA");
      }
 
      if (rawResult.ocs.data.server) {
        server = rawResult.ocs.data.server;
      } else {
        throw new ClientError("Fatal Error: nextcloud data.server missing", "ERR_SYSTEM_INFO_MISSING_DATA");
      }
 
      if (rawResult.ocs.data.activeUsers) {
        activeUsers = rawResult.ocs.data.activeUsers;
      } else {
        throw new ClientError("Fatal Error: nextcloud data.activeUsers missing", "ERR_SYSTEM_INFO_MISSING_DATA");
      }
    } else {
      throw new ClientError("Fatal Error: nextcloud system data missing", "ERR_SYSTEM_INFO_MISSING_DATA");
    }
 
    const result: ISystemInfo = {
      activeUsers,
      nextcloud: {
        shares,
        storage,
        system,
      },
      nextcloudClient: {
        // eslint-disable-next-line @typescript-eslint/no-var-requires
        version: require("../package.json").version,
      },
      server,
    };
    return result;
  }
 
  public async getSystemBasicData(): Promise<ISysBasicData> {
    const requestInit: RequestInit = {
      headers: this.getOcsHeaders(),
      method: "GET",
    };
 
    const response: Response = await this.getHttpResponse(this.nextcloudOrigin + "/ocs/v2.php/apps/serverinfo/api/v1/basicdata", requestInit, [200], { description: "System Basic Data get" });
 
    const rawResult: any = await response.json();
    // console.log("Basic Data\n", JSON.stringify(rawResult));
    let result: ISysBasicData;
 
    if (rawResult && rawResult.ocs && rawResult.ocs.data && rawResult.ocs.data.servertime && rawResult.ocs.data.uptime && rawResult.ocs.data.timeservers) {
      result = {
        // eslint-disable-next-line @typescript-eslint/no-unsafe-call
        serverTimeString: rawResult.ocs.data.servertime.replace("\n", ""),
        // eslint-disable-next-line @typescript-eslint/no-unsafe-call
        uptimeString: rawResult.ocs.data.uptime.replace("\n", ""),
        // eslint-disable-next-line @typescript-eslint/no-unsafe-call
        timeServersString: rawResult.ocs.data.timeservers.trim(),
      };
    } else {
      throw new ClientError("Fatal Error: nextcloud basic data missing", "ERR_SYSTEM_INFO_MISSING_DATA");
    }
 
    return result;
  }
 
  // ***************************************************************************************
  // user management
  // ***************************************************************************************
 
  // ***************************************************************************************
  // user group
  // spec: https://docs.nextcloud.com/server/latest/admin_manual/configuration_user/instruction_set_for_groups.html
  // ***************************************************************************************
 
  /**
   * returns a list of user groups
   * @param search string
   * @param limit number
   * @param offset number
   * @returns list of user groups
   * @throws QueryLimitError
   * @throws QueryOffsetError
   */
  public async getUserGroups(search?: string, limit?: number, offset?: number): Promise<UserGroup[]> {
    log.debug("getUserGroups");
 
    const userGroupIds: string[] = await this.getUserGroupIds(search, limit, offset);
    const userGroups: UserGroup[] = [];
    for (const userGroupId of userGroupIds) {
      userGroups.push(new UserGroup(this, userGroupId));
    }
    return userGroups;
  }
 
  /**
   * returns a list of user groups
   * @param search string
   * @param limit number
   * @param offset number
   * @returns list of user groups
   * @throws QueryLimitError
   * @throws QueryOffsetError
   */
  public async getUserGroupIds(search?: string, limit?: number, offset?: number): Promise<string[]> {
    log.debug("getUserGroupIds");
    const requestInit: RequestInit = {
      headers: this.getOcsHeaders(),
      method: "GET",
    };
 
    let url = this.getOcsUrl(`/groups`);
    const queryParameter: string[] = [];
    if (search) {
      queryParameter.push(`search=${search}`);
    }
    if (limit) {
      if (limit < 1) {
        throw new QueryLimitError("The limit must be larger than 0");
      }
      queryParameter.push(`limit=${limit}`);
    }
    if (offset) {
      if (offset < 1) {
        throw new QueryOffsetError("The offset must be larger than 0");
      }
      queryParameter.push(`offset=${offset}`);
    }
    if (queryParameter.join("&").length > 1) {
      url += "?" + queryParameter.join("&");
    }
    log.debug("url ", url);
 
    const response: Response = await this.getHttpResponse(url, requestInit, [200], { description: "User Groups get" });
    const rawResult: any = await response.json();
    /*
        {
          ocs: {
            meta: {
              status: 'ok',
              statuscode: 100,
              message: 'OK',
              totalitems: '',
              itemsperpage: ''
            },
            data: { groups: ["g1", "g2"] }
          }
        }
        */
    const userGroups: string[] = [];
 
    if (rawResult.ocs && rawResult.ocs.data && rawResult.ocs.data.groups) {
      log.debug("groups", rawResult.ocs.data.groups);
      // eslint-disable-next-line @typescript-eslint/no-unsafe-call
      rawResult.ocs.data.groups.forEach((value: string) => {
        // userGroups.push(new UserGroup(this, value));
        userGroups.push(value);
      });
    }
    return userGroups;
  }
 
  /**
   * get user group
   * @param id string
   * @returns Promise<UserGroup|null>
   */
  public async getUserGroup(id: string): Promise<UserGroup | null> {
    const userGroups: UserGroup[] = await this.getUserGroups(id);
    if (userGroups[0]) {
      return userGroups[0];
    }
    return null;
  }
 
  /**
   * returns a list of user ids that are members of the user group
   * @param id string
   * @returns list of member user ids
   * @throws [UserGroupDoesNotExistError}
   */
  public async getUserGroupMembers(id: string): Promise<string[]> {
    log.debug("getUserGroupMembers");
    const requestInit: RequestInit = {
      headers: this.getOcsHeaders(),
      method: "GET",
    };
 
    const url = this.getOcsUrl(`/groups/${id}`);
    log.debug("url ", url);
 
    const response: Response = await this.getHttpResponse(url, requestInit, [200], { description: "User group get members" });
    const rawResult: any = await response.json();
    const userIds: string[] = [];
 
    if (this.getOcsMetaStatus(rawResult).code === 404) {
      throw new UserGroupDoesNotExistError(`User Group ${id} does not exist`);
    }
 
    if (rawResult.ocs && rawResult.ocs.data && rawResult.ocs.data.users) {
      log.debug("members", rawResult.ocs.data.users);
      // eslint-disable-next-line @typescript-eslint/no-unsafe-call
      rawResult.ocs.data.users.forEach((value: string) => {
        userIds.push(value);
      });
    }
 
    return userIds;
  }
 
  /**
   * returns a list of user ids that are subadmins of the user group
   * @param id string
   * @returns list of subadmin user ids
   * @throws [UserGroupDoesNotExistError}
   */
  public async getUserGroupSubadmins(id: string): Promise<string[]> {
    log.debug("getUserGroupsubadmins");
    const requestInit: RequestInit = {
      headers: this.getOcsHeaders(),
      method: "GET",
    };
 
    const url = this.getOcsUrl(`/groups/${id}/subadmins`);
    log.debug("url ", url);
 
    const response: Response = await this.getHttpResponse(url, requestInit, [200], { description: "User group get subadmins" });
    const rawResult: any = await response.json();
    const userIds: string[] = [];
 
    if (this.getOcsMetaStatus(rawResult).code === 101) {
      throw new UserGroupDoesNotExistError(`User Group ${id} does not exist`);
    }
 
    if (rawResult.ocs && rawResult.ocs.data) {
      log.debug("subadmins", rawResult.ocs.data);
      // eslint-disable-next-line @typescript-eslint/no-unsafe-call
      rawResult.ocs.data.forEach((value: string) => {
        userIds.push(value);
      });
    }
 
    return userIds;
  }
 
  /**
   * create a new user group
   * @async
   * @param {string} id user group id
   * @returns {Promise<UserGroup>}
   * @throws {UserGroupAlreadyExistsError}
   */
  public async createUserGroup(id: string): Promise<UserGroup> {
    log.debug("createUserGroup id=", id);
    const requestInit: RequestInit = {
      body: JSON.stringify({ groupid: id }),
      headers: this.getOcsHeaders(),
      method: "POST",
    };
    log.debug("request body: ", requestInit.body);
    const response: Response = await this.getHttpResponse(this.getOcsUrl(`/groups`), requestInit, [200], { description: "UserGroup create" });
    const rawResult: any = await response.json();
 
    if (this.getOcsMetaStatus(rawResult).code === 102) {
      throw new UserGroupAlreadyExistsError(`User Group ${id} already exists`);
    }
 
    if (this.getOcsMetaStatus(rawResult).code === 100) {
      return new UserGroup(this, id);
    }
    throw new OperationFailedError(`User group ${id} could not be created: ${this.getOcsMetaStatus(rawResult).message}`);
  }
 
  /**
   * deletes an existing user group
   * @param id string
   * @returns {Promise<void>}
   * @throws {UserGroupDowsNotExistError}
   * @throws {UserGroupDeletionFailedError}
   */
  public async deleteUserGroup(id: string): Promise<void> {
    log.debug("deleteUserGroup id=", id);
    const requestInit: RequestInit = {
      headers: this.getOcsHeaders(),
      method: "DELETE",
    };
    log.debug("request body: ", requestInit.body);
    const response: Response = await this.getHttpResponse(this.getOcsUrl(`/groups/${id}`), requestInit, [200], { description: "UserGroup delete" });
    const rawResult: any = await response.json();
 
    if (this.getOcsMetaStatus(rawResult).code === 101) {
      throw new UserGroupDoesNotExistError(`User Group ${id} does not exists`);
    }
 
    if (this.getOcsMetaStatus(rawResult).code === 102) {
      throw new UserGroupDeletionFailedError(`User Group ${id} could not be deleted`);
    }
  }
 
  // ***************************************************************************************
  // user
  // spec: https://docs.nextcloud.com/server/latest/admin_manual/configuration_user/instruction_set_for_users.html
  // ***************************************************************************************
 
  /**
   * returns a list of users
   * https://docs.nextcloud.com/server/latest/admin_manual/configuration_user/instruction_set_for_users.html#search-get-users
   * @param search string
   * @param limit number
   * @param offset number
   */
  public async getUsers(search?: string, limit?: number, offset?: number): Promise<User[]> {
    log.debug("getUsers");
    const requestInit: RequestInit = {
      headers: this.getOcsHeaders(),
      method: "GET",
    };
 
    let url = this.getOcsUrl(`/users`);
    const queryParameter: string[] = [];
    if (search) {
      queryParameter.push(`search=${search}`);
    }
    if (limit) {
      if (limit < 1) {
        throw new QueryLimitError("The limit must be larger than 0");
      }
      queryParameter.push(`limit=${limit}`);
    }
    if (offset) {
      if (offset < 1) {
        throw new QueryOffsetError("The offset must be larger than 0");
      }
      queryParameter.push(`offset=${offset}`);
    }
    if (queryParameter.join("&").length > 1) {
      url += "?" + queryParameter.join("&");
    }
    log.debug("url ", url);
 
    const response: Response = await this.getHttpResponse(url, requestInit, [200], { description: "Users get" });
    const rawResult: any = await response.json();
    /*
        {
          ocs: {
            meta: {
              status: 'ok',
              statuscode: 100,
              message: 'OK',
              totalitems: '',
              itemsperpage: ''
            },
            data: { users: ["u1", "u2"] }
          }
        }
        */
    const users: User[] = [];
 
    if (rawResult.ocs && rawResult.ocs.data && rawResult.ocs.data.users) {
      log.debug("user ids", rawResult.ocs.data.users);
      // eslint-disable-next-line @typescript-eslint/no-unsafe-call
      rawResult.ocs.data.users.forEach((value: string) => {
        users.push(new User(this, value));
      });
    }
 
    return users;
  }
 
  /**
   * returns user data
   * @param id string the user id
   * @returns Promise<IUserOptions> user data
   * @throws {UserNotFoundError}
   */
  public async getUserData(id: string): Promise<IUserOptions> {
    log.debug("getUserData");
    const requestInit: RequestInit = {
      headers: this.getOcsHeaders(),
      method: "GET",
    };
 
    const url = this.getOcsUrl(`/users/${id}`);
    log.debug("url ", url);
 
    const response: Response = await this.getHttpResponse(url, requestInit, [200], { description: `User ${id} get` });
    const rawResult: any = await response.json();
 
    if (this.getOcsMetaStatus(rawResult).code === 404) {
      throw new UserNotFoundError(`User '${id}' not found`);
    }
    /*
        {
          ocs: {
            meta: {
              status: 'ok',
              statuscode: 100,
              message: 'OK',
              totalitems: '',
              itemsperpage: ''
            },
            data: { ... }
          }
        }
        */
 
    log.debug("user data", rawResult.ocs.data);
    const userData: IUserOptions = {
      enabled: rawResult.ocs.data.enabled,
      lastLogin: rawResult.ocs.data.lastLogin === 0 ? undefined : new Date(rawResult.ocs.data.lastLogin),
      subadminGroups: rawResult.ocs.data.subadmin,
      memberGroups: rawResult.ocs.data.groups,
      quota: {
        free: 0,
        used: 0,
        total: 0,
        relative: 0,
        quota: 0,
      },
      email: rawResult.ocs.data.email,
      displayName: rawResult.ocs.data.displayname,
      phone: rawResult.ocs.data.phone,
      address: rawResult.ocs.data.address,
      website: rawResult.ocs.data.website,
      twitter: rawResult.ocs.data.twitter,
      language: rawResult.ocs.data.language,
      locale: rawResult.ocs.data.locale,
    };
    if (rawResult.ocs.data.quota.quota === "none") {
      userData.quota = { quota: 0, relative: 0, used: 0 };
    } else {
      if (!rawResult.ocs.data.quota.relative) {
        rawResult.ocs.data.quota.relative = 0;
      }
      userData.quota = { quota: rawResult.ocs.data.quota.quota, relative: rawResult.ocs.data.quota.relative, used: rawResult.ocs.data.quota.used };
      if (rawResult.ocs.data.quota.free) {
        userData.quota.free = rawResult.ocs.data.quota.free;
      }
      if (rawResult.ocs.data.quota.total) {
        userData.quota.total = rawResult.ocs.data.quota.total;
      }
    }
    return userData;
  }
 
  /**
   * enables the user
   * @param id string the user id
   * @returns {Promise<void>}
   * @throws {UserNotFoundError}
   */
  public async enableUser(id: string): Promise<void> {
    log.debug("enableUser");
    const requestInit: RequestInit = {
      headers: this.getOcsHeaders(),
      method: "PUT",
    };
 
    const url = this.getOcsUrl(`/users/${id}/enable`);
    log.debug("url ", url);
 
    const response: Response = await this.getHttpResponse(url, requestInit, [200], { description: `User ${id} enable` });
    const rawResult: any = await response.json();
 
    if (this.getOcsMetaStatus(rawResult).code === 100) {
      return;
    }
    throw new UserNotFoundError(`User '${id}' not found`);
  }
 
  /**
   * disables the user
   * @param id string the user id
   * @returns {Promise<void>}
   * @throws {UserNotFoundError}
   */
  public async disableUser(id: string): Promise<void> {
    log.debug("disableUser");
    const requestInit: RequestInit = {
      headers: this.getOcsHeaders(),
      method: "PUT",
    };
 
    const url = this.getOcsUrl(`/users/${id}/disable`);
    log.debug("url ", url);
 
    const response: Response = await this.getHttpResponse(url, requestInit, [200], { description: `User ${id} disable` });
    const rawResult: any = await response.json();
 
    if (this.getOcsMetaStatus(rawResult).code === 100) {
      return;
    }
    throw new UserNotFoundError(`User '${id}' not found`);
  }
 
  /**
   * deletes the user
   * @param id string the user id
   * @returns {Promise<void>}
   * @throws {UserNotFoundError}
   */
  public async deleteUser(id: string): Promise<void> {
    log.debug("deleteUser");
    const requestInit: RequestInit = {
      headers: this.getOcsHeaders(),
      method: "DELETE",
    };
 
    const url = this.getOcsUrl(`/users/${id}`);
    log.debug("url ", url);
 
    const response: Response = await this.getHttpResponse(url, requestInit, [200], { description: `User ${id} delete` });
    const rawResult: any = await response.json();
 
    if (this.getOcsMetaStatus(rawResult).code === 100) {
      return;
    }
    throw new UserNotFoundError(`User '${id}' not found`);
  }
 
  /**
   * returns a user or null if not found
   * @param id string
   * @returns User | null
   */
  public async getUser(id: string): Promise<User | null> {
    log.debug("getUser");
    const users: User[] = await this.getUsers(id);
    if (users[0]) {
      return users[0];
    }
    return null;
  }
 
  /**
   * creates a new user with email or password
   * @param options
   * @returns User
   * @throws UserAlreadyExistsError
   * @throws {UserNotFoundError}
   * @throws UserUpdateError
   */
  public async createUser(options: { id: string; email?: string; password?: string }): Promise<User> {
    log.debug("createUser");
    const createUserBody: { userid: string; password?: string; email?: string } = { userid: options.id };
    if (options.email) {
      if (/^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(options.email)) {
        createUserBody.email = options.email;
      } else {
        throw new UserCreateError(`Error creating user '${options.id}' - invalid email address '${options.email}'`);
      }
    }
    if (options.password) {
      createUserBody.password = options.password;
    }
 
    const requestInit: RequestInit = {
      body: JSON.stringify(createUserBody, null, 4),
      headers: this.getOcsHeaders(),
      method: "POST",
    };
    log.debug("request body: ", requestInit.body);
    const response: Response = await this.getHttpResponse(this.getOcsUrl(`/users`), requestInit, [200], { description: `User ${options.id} create` });
    const rawResult: any = await response.json();
 
    if (this.getOcsMetaStatus(rawResult).code === 102) {
      throw new UserAlreadyExistsError(`User with id '${options.id}' already exists`);
    }
 
    const user: User | null = await this.getUser(options.id);
    if (user) {
      return user;
    }
 
    throw new UserCreateError(`Error creating user '${options.id}' - ${this.getOcsMetaStatus(rawResult).message} (${this.getOcsMetaStatus(rawResult).code})`);
  }
 
  /**
   * updates a user property
   * @async
   * @param {string} id user id
   * @param {UserProperty} property property name
   * @param {string} value property value
   * @returns {Promise<void>}
   * @throws  {UserNotFoundError}
   * @throws  {UserUpdateError}
   */
  public async updateUserProperty(id: string, property: UserProperty, value: string): Promise<void> {
    log.debug("updateUserProperty");
    const body: { key: string; value: string } = { key: property, value };
 
    const requestInit: RequestInit = {
      body: JSON.stringify(body, null, 4),
      headers: this.getOcsHeaders(),
      method: "PUT",
    };
    const url = this.getOcsUrl(`/users/${id}`);
    log.debug("request body: ", requestInit.body);
    const response: Response = await this.getHttpResponse(url, requestInit, [200, 401], { description: `User ${id} update ${property}=${value}` });
    const rawResult: any = await response.json();
 
    // This service operation returns a 401, if the user does not exist - very strange...
    // spec says to return 200 and status code 101
    /*
        if (this.getOcsMetaStatus(rawResult).code === 101) {
            throw new UserNotFoundError(`User with id '${id}' not found`);
        }
        */
    // maybe this is due to a nextcloud api error
    // it is not possible to distiguish beteen authentication error and user not found :-(
    if (response.status === 401) {
      throw new UserNotFoundError(`User with id '${id}' not found`);
    }
 
    if (this.getOcsMetaStatus(rawResult).code === 100) {
      return;
    }
 
    if (property === UserProperty.password) {
      value = "********";
    }
    // code 102 or 103
    throw new UserUpdateError(`User with id '${id}' could not be updated - ${property}=${value}. ${rawResult.ocs.meta.message as string}`);
  }
 
  /**
   * resend the welcome email
   * @param id user id
   * @throws  {UserResendWelcomeEmailError}
   */
  public async resendWelcomeEmail(id: string): Promise<void> {
    log.debug("resendWelcomeEmail");
 
    const requestInit: RequestInit = {
      headers: this.getOcsHeaders(),
      method: "POST",
    };
    const url = this.getOcsUrl(`/users/${id}/welcome`);
    log.debug("request body: ", requestInit.body);
    const response: Response = await this.getHttpResponse(url, requestInit, [200], { description: `Resend welcome email for user ${id}` });
    const rawResult: any = await response.json();
 
    if (this.getOcsMetaStatus(rawResult).code === 101) {
      throw new UserResendWelcomeEmailError(`Error sending welcome email for '${id}': Email address not available`);
    }
 
    if (this.getOcsMetaStatus(rawResult).code === 100) {
      return;
    }
    throw new UserResendWelcomeEmailError(`Error sending welcome email for '${id}' failed`);
  }
 
  /**
   * adds a user to a group as member
   * @param id string the user id
   * @param userGroupId string the user group id
   * @returns {Promise<void>}
   * @throws {UserNotFoundError}
   * @throws {UserGroupDoesNotExistError}
   * @throws {InsufficientPrivilegesError}
   * @throws {OperationFailedError}
   */
  public async addUserToMemberUserGroup(id: string, userGroupId: string): Promise<void> {
    log.debug("addUserToUserGroup");
 
    const body: { groupid: string } = { groupid: userGroupId };
    const requestInit: RequestInit = {
      body: JSON.stringify(body, null, 4),
      headers: this.getOcsHeaders(),
      method: "POST",
    };
 
    const url = this.getOcsUrl(`/users/${id}/groups`);
    log.debug("url ", url);
 
    const response: Response = await this.getHttpResponse(url, requestInit, [200], { description: `Add user ${id} to user group ${userGroupId}` });
    const rawResult: any = await response.json();
 
    if (this.getOcsMetaStatus(rawResult).code === 100) {
      return;
    }
 
    if (this.getOcsMetaStatus(rawResult).code === 102) {
      throw new UserGroupDoesNotExistError(`User group ${userGroupId} does not exist`);
    }
 
    if (this.getOcsMetaStatus(rawResult).code === 103) {
      throw new UserNotFoundError(`User ${id} does not exist`);
    }
 
    if (this.getOcsMetaStatus(rawResult).code === 104) {
      throw new InsufficientPrivilegesError(`Insufficient privileges to add a user to a group`);
    }
 
    throw new OperationFailedError(`User ${id} could not be added to user group ${userGroupId}: ${this.getOcsMetaStatus(rawResult).message}`);
  }
 
  /**
   * removes a user from a group as member
   * @param id string the user id
   * @param userGroupId string the user group id
   * @returns {Promise<void>}
   * @throws {UserNotFoundError}
   * @throws {UserGroupDoesNotExistError}
   * @throws {InsufficientPrivilegesError}
   * @throws {OperationFailedError}
   */
  public async removeUserFromMemberUserGroup(id: string, userGroupId: string): Promise<void> {
    log.debug("removeUserFromMemberUserGroup");
 
    const body: { groupid: string } = { groupid: userGroupId };
    const requestInit: RequestInit = {
      body: JSON.stringify(body, null, 4),
      headers: this.getOcsHeaders(),
      method: "DELETE",
    };
 
    const url = this.getOcsUrl(`/users/${id}/groups`);
    log.debug("url ", url);
 
    const response: Response = await this.getHttpResponse(url, requestInit, [200], { description: `Remove user ${id} from user group ${userGroupId}` });
    const rawResult: any = await response.json();
 
    if (this.getOcsMetaStatus(rawResult).code === 100) {
      return;
    }
 
    if (this.getOcsMetaStatus(rawResult).code === 102) {
      throw new UserGroupDoesNotExistError(`User group ${userGroupId} does not exist`);
    }
 
    if (this.getOcsMetaStatus(rawResult).code === 103) {
      throw new UserNotFoundError(`User ${id} does not exist`);
    }
 
    if (this.getOcsMetaStatus(rawResult).code === 104) {
      throw new InsufficientPrivilegesError(`Insufficient privileges to add a user to a group`);
    }
 
    throw new OperationFailedError(`User ${id} could not be added to user group ${userGroupId}: ${this.getOcsMetaStatus(rawResult).message}`);
  }
 
  /**
   * promotes a user to a user group subadmin
   * @param id string the user id
   * @param userGroupId string the user group id
   * @returns {Promise<void>}
   * @throws {UserNotFoundError}
   * @throws {UserGroupDoesNotExistError}
   * @throws {InsufficientPrivilegesError}
   * @throws {OperationFailedError}
   */
  public async promoteUserToUserGroupSubadmin(id: string, userGroupId: string): Promise<void> {
    log.debug("promoteUserToUserGroupSubadmin");
 
    const body: { groupid: string } = { groupid: userGroupId };
    const requestInit: RequestInit = {
      body: JSON.stringify(body, null, 4),
      headers: this.getOcsHeaders(),
      method: "POST",
    };
 
    const url = this.getOcsUrl(`/users/${id}/subadmins`);
    log.debug("url ", url);
 
    const response: Response = await this.getHttpResponse(url, requestInit, [200], { description: `Promote User ${id} to user group subadmin ${userGroupId}` });
    const rawResult: any = await response.json();
 
    if (this.getOcsMetaStatus(rawResult).code === 100) {
      return;
    }
 
    if (this.getOcsMetaStatus(rawResult).code === 102) {
      throw new UserGroupDoesNotExistError(`User group ${userGroupId} does not exist`);
    }
 
    if (this.getOcsMetaStatus(rawResult).code === 101) {
      throw new UserNotFoundError(`User ${id} does not exist`);
    }
 
    if (this.getOcsMetaStatus(rawResult).code === 104) {
      throw new InsufficientPrivilegesError(`Insufficient privileges to add a user to a group`);
    }
 
    throw new OperationFailedError(`User ${id} could not be removed from user group ${userGroupId}: ${this.getOcsMetaStatus(rawResult).message}`);
  }
 
  /**
   * Removes the subadmin rights for the user specified from the group specified
   * @param id string the user id
   * @param userGroupId string the user group id
   * @returns {Promise<void>}
   * @throws {InsufficientPrivilegesError}
   * @throws {OperationFailedError}
   */
  public async demoteUserFromSubadminUserGroup(id: string, userGroupId: string): Promise<void> {
    log.debug("demoteUserFromSubadminUserGroup");
 
    const body: { groupid: string } = { groupid: userGroupId };
    const requestInit: RequestInit = {
      body: JSON.stringify(body, null, 4),
      headers: this.getOcsHeaders(),
      method: "DELETE",
    };
 
    const url = this.getOcsUrl(`/users/${id}/subadmins`);
    log.debug("url ", url);
 
    const response: Response = await this.getHttpResponse(url, requestInit, [200], { description: `Demotes user ${id} from subadmin user group ${userGroupId}` });
    const rawResult: any = await response.json();
 
    if (this.getOcsMetaStatus(rawResult).code === 100) {
      return;
    }
 
    // this API does not work like remove from group :-(
    // 101 is for user group not found and user not found
    /*
            if (this.getOcsMetaStatus(rawResult).code === 101) {
                throw new UserGroupDoesNotExistError(`User group ${userGroupId} does not exist`)
            }
 
            if (this.getOcsMetaStatus(rawResult).code === 101) {
                throw new UserNotFoundError(`User ${id} does not exist`)
            }
        */
    if (this.getOcsMetaStatus(rawResult).code === 104) {
      throw new InsufficientPrivilegesError(`Insufficient privileges to add a user to a group`);
    }
 
    throw new OperationFailedError(`User ${id} could not be demoted from subadmin user group ${userGroupId}: ${this.getOcsMetaStatus(rawResult).message}`);
  }
 
  /**
   * insert or update complete user data
   * @param options IUpsertUserOptions[]
   * @returns Promise<IUpsertUserReport[]
   */
  public async upsertUsers(options: IUpsertUserOptions[]): Promise<IUpsertUserReport[]> {
    const report: IUpsertUserReport[] = [];
    for (const option of options) {
      const userReport: IUpsertUserReport = { id: option.id, message: "", changes: [] };
      let user: User | null = await this.getUser(option.id);
      // create or update user?
 
      if (!user) {
        try {
          user = await this.createUser({ id: option.id, email: option.email, password: option.password });
          userReport.message = `User ${option.id} created`;
        } catch (e) {
          userReport.message = `Create user ${option.id} failed ${e.message as string}`;
          report.push(userReport);
          continue;
        }
      } else {
        userReport.message = `User ${option.id} changed`;
      }
 
      let previousValue: string = "";
      let newValue: string = "";
      let property: string = "";
 
      // ************************
      // enabled
      // ************************
      if (option.enabled !== undefined) {
        if ((await user.isEnabled()) && option.enabled === false) {
          try {
            await user.disable();
            userReport.changes.push({ property: "enabled", previousValue: "true", newValue: "false" });
          } catch (e) {
            userReport.changes.push({ property: "enabled", previousValue: "true", newValue: "true", error: e.message });
          }
        }
 
        if ((await user.isEnabled()) === false && option.enabled === true) {
          try {
            await user.enable();
            userReport.changes.push({ property: "enabled", previousValue: "false", newValue: "true" });
          } catch (e) {
            userReport.changes.push({ property: "enabled", previousValue: "false", newValue: "false", error: e.message });
          }
        }
      }
 
      // ************************
      // super admin
      // ************************
      if (option.superAdmin !== undefined) {
        if ((await user.isSuperAdmin()) && option.superAdmin === false) {
          try {
            await user.demoteFromSuperAdmin();
            userReport.changes.push({ property: "superAdmin", previousValue: "true", newValue: "false" });
          } catch (e) {
            userReport.changes.push({ property: "superAdmin", previousValue: "true", newValue: "true", error: e.message });
          }
        }
 
        if ((await user.isSuperAdmin()) === false && option.superAdmin === true) {
          try {
            await user.promoteToSuperAdmin();
            userReport.changes.push({ property: "superAdmin", previousValue: "false", newValue: "true" });
          } catch (e) {
            userReport.changes.push({ property: "superAdmin", previousValue: "false", newValue: "false", error: e.message });
          }
        }
      }
 
      // ************************
      // member groups
      // ************************
      if (option.memberGroups !== undefined) {
        const previousGroups: string[] = await user.getMemberUserGroupIds();
        const newGroups: string[] = option.memberGroups;
        if (option.superAdmin !== undefined) {
          if (option.superAdmin === true) {
            if (newGroups.indexOf("admin") === -1) {
              newGroups.push("admin");
            }
          }
        }
        const groupsToAdd: string[] = newGroups.filter((x) => !previousGroups.includes(x));
        const groupsToRemove: string[] = previousGroups.filter((x) => !newGroups.includes(x));
        let userGroup: UserGroup | null;
        property = "memberGroups";
        let error: Error | null = null;
        for (const groupId of groupsToAdd) {
          userGroup = await this.getUserGroup(groupId);
          if (!userGroup) {
            try {
              userGroup = await this.createUserGroup(groupId);
            } catch (e) {
              error = e as Error;
              break;
            }
          }
          try {
            await user.addToMemberUserGroup(userGroup);
          } catch (e) {
            error = e as Error;
            break;
          }
        }
 
        for (const groupId of groupsToRemove) {
          try {
            await user.removeFromMemberUserGroup(new UserGroup(this, groupId));
          } catch (e) {
            error = e as Error;
            break;
          }
        }
        if (error) {
          userReport.changes.push({ property, previousValue: previousGroups.join(", "), newValue: previousGroups.join(", "), error: error.message });
        } else {
          Eif (groupsToAdd.length > 0 || groupsToRemove.length > 0) {
            userReport.changes.push({ property, previousValue: previousGroups.join(", "), newValue: newGroups.join(", ") });
          }
        }
      }
 
      // ************************
      // subadmin groups
      // ************************
      if (option.subadminGroups !== undefined) {
        const previousGroups: string[] = await user.getSubadminUserGroupIds();
        const newGroups: string[] = option.subadminGroups;
        const groupsToAdd: string[] = newGroups.filter((x) => !previousGroups.includes(x));
        const groupsToRemove: string[] = previousGroups.filter((x) => !newGroups.includes(x));
        let userGroup: UserGroup | null;
        property = "subadminGroups";
        let error: Error | null = null;
        for (const groupId of groupsToAdd) {
          userGroup = await this.getUserGroup(groupId);
          if (!userGroup) {
            try {
              userGroup = await this.createUserGroup(groupId);
            } catch (e) {
              error = e as Error;
              break;
            }
          }
          try {
            await user.promoteToUserGroupSubadmin(userGroup);
          } catch (e) {
            error = e as Error;
            break;
          }
        }
 
        for (const groupId of groupsToRemove) {
          try {
            await user.demoteFromSubadminUserGroup(new UserGroup(this, groupId));
          } catch (e) {
            error = e as Error;
            break;
          }
        }
        if (error) {
          userReport.changes.push({ property, previousValue: previousGroups.join(", "), newValue: previousGroups.join(", "), error: error.message });
        } else {
          userReport.changes.push({ property, previousValue: previousGroups.join(", "), newValue: newGroups.join(", ") });
        }
      }
 
      // ************************
      // display name
      // ************************
      if (option.displayName !== undefined) {
        previousValue = await user.getDisplayName();
        newValue = option.displayName;
        property = "displayName";
        if (previousValue !== newValue) {
          try {
            await user.setDisplayName(option.displayName);
            userReport.changes.push({ property, previousValue, newValue });
          } catch (e) {
            let message = "";
            Eif (e instanceof Error) {
              message = e.message;
            }
            userReport.changes.push({ property, previousValue, newValue: previousValue, error: message });
          }
        }
      }
 
      // ************************
      // email
      // ************************
      if (option.email !== undefined) {
        previousValue = await user.getEmail();
        newValue = option.email;
        property = "email";
        if (previousValue !== newValue) {
          try {
            await user.setEmail(option.email);
            userReport.changes.push({ property, previousValue, newValue });
          } catch (e) {
            let message = "";
            Eif (e instanceof Error) {
              message = e.message;
            }
            userReport.changes.push({ property, previousValue, newValue: previousValue, error: message });
          }
        }
      }
 
      // ************************
      // language
      // ************************
      if (option.language !== undefined) {
        previousValue = await user.getLanguage();
        newValue = option.language;
        property = "language";
        if (previousValue !== newValue) {
          try {
            await user.setLanguage(option.language);
            userReport.changes.push({ property, previousValue, newValue });
          } catch (e) {
            let message = "";
            Eif (e instanceof Error) {
              message = e.message;
            }
            userReport.changes.push({ property, previousValue, newValue: previousValue, error: message });
          }
        }
      }
 
      // ************************
      // locale
      // ************************
      if (option.locale !== undefined) {
        previousValue = await user.getLocale();
        newValue = option.locale;
        property = "locale";
        if (previousValue !== newValue) {
          try {
            await user.setLocale(option.locale);
            userReport.changes.push({ property, previousValue, newValue });
          } catch (e) {
            let message = "";
            Eif (e instanceof Error) {
              message = e.message;
            }
            userReport.changes.push({ property, previousValue, newValue: previousValue, error: message });
          }
        }
      }
 
      // ************************
      // twitter
      // ************************
      if (option.twitter !== undefined) {
        previousValue = await user.getTwitter();
        newValue = option.twitter;
        property = "twitter";
        if (previousValue !== newValue) {
          try {
            await user.setTwitter(option.twitter);
            userReport.changes.push({ property, previousValue, newValue });
          } catch (e) {
            let message = "";
            Eif (e instanceof Error) {
              message = e.message;
            }
            userReport.changes.push({ property, previousValue, newValue: previousValue, error: message });
          }
        }
      }
 
      // ************************
      // phone
      // ************************
      if (option.phone !== undefined) {
        previousValue = await user.getPhone();
        newValue = option.phone;
        property = "phone";
        if (previousValue !== newValue) {
          try {
            await user.setPhone(option.phone);
            userReport.changes.push({ property, previousValue, newValue });
          } catch (e) {
            let message = "";
            Eif (e instanceof Error) {
              message = e.message;
            }
 
            userReport.changes.push({ property, previousValue, newValue: previousValue, error: message });
          }
        }
      }
 
      // ************************
      // password
      // ************************
      if (option.password !== undefined) {
        previousValue = "********";
        newValue = option.password;
        property = "password";
        try {
          await user.setPassword(option.password);
          userReport.changes.push({ property, previousValue, newValue: previousValue });
        } catch (e) {
          let message = "";
          Eif (e instanceof Error) {
            message = e.message;
          }
          userReport.changes.push({ property, previousValue, newValue: previousValue, error: message });
        }
      }
 
      // ************************
      // address
      // ************************
      if (option.address !== undefined) {
        previousValue = await user.getAddress();
        newValue = option.address;
        property = "address";
        if (previousValue !== newValue) {
          try {
            await user.setAddress(option.address);
            userReport.changes.push({ property, previousValue, newValue });
          } catch (e) {
            let message = "";
            Eif (e instanceof Error) {
              message = e.message;
            }
            userReport.changes.push({ property, previousValue, newValue: previousValue, error: message });
          }
        }
      }
 
      // ************************
      // website
      // ************************
      if (option.website !== undefined) {
        previousValue = await user.getWebsite();
        newValue = option.website;
        property = "website";
        if (previousValue !== newValue) {
          try {
            await user.setWebsite(option.website);
            userReport.changes.push({ property, previousValue, newValue });
          } catch (e) {
            let message = "";
            Eif (e instanceof Error) {
              message = e.message;
            }
            userReport.changes.push({ property, previousValue, newValue: previousValue, error: message });
          }
        }
      }
 
      // ************************
      // quota
      // ************************
      if (option.quota !== undefined) {
        previousValue = (await user.getQuotaUserFriendly()).quota;
        newValue = option.quota;
        property = "quota";
        if (previousValue !== newValue) {
          try {
            await user.setQuota(option.quota);
            userReport.changes.push({ property, previousValue, newValue });
          } catch (e) {
            let message = "";
            Eif (e instanceof Error) {
              message = e.message;
            }
 
            userReport.changes.push({ property, previousValue, newValue: previousValue, error: message });
          }
        }
      }
 
      // ************************
      // resend welcome email
      // ************************
      if (option.resendWelcomeEmail !== undefined) {
        previousValue = "not sent";
        newValue = "sent";
        property = "resendWelcomeEmail";
        if (option.resendWelcomeEmail) {
          try {
            await user.resendWelcomeEmail();
            userReport.changes.push({ property, previousValue, newValue });
          } catch (e) {
            let message = "";
            Eif (e instanceof Error) {
              message = e.message;
            }
 
            userReport.changes.push({ property, previousValue, newValue: previousValue, error: message });
          }
        }
      }
 
      if (userReport.changes.length === 0) {
        userReport.message = `User ${option.id} not changed`;
      }
      report.push(userReport);
    }
    return report;
  }
 
  // ***************************************************************************************
  // shares
  // https://docs.nextcloud.com/server/latest/developer_manual/client_apis/OCS/ocs-share-api.html
  // ***************************************************************************************
 
  /**
   * create a new share
   */
  public async createShare(options: ICreateShare): Promise<Share> {
    const shareRequest = Share.createShareRequestBody(options);
    log.debug(shareRequest);
 
    const requestInit: RequestInit = {
      body: shareRequest,
      headers: this.getOcsHeaders(),
      method: "POST",
    };
    const url = this.nextcloudOrigin + "/ocs/v2.php/apps/files_sharing/api/v1/shares";
 
    // try {
    const response: Response = await this.getHttpResponse(url, requestInit, [200, 204], { description: "Share create" });
 
    const rawResult: { ocs: { data: { id: string } } } = (await response.json()) as { ocs: { data: { id: string } } };
 
    log.debug(rawResult);
 
    const share: Share = await Share.getShare(this, rawResult.ocs.data.id);
 
    if (options.publicUpload) {
      await share.setPublicUpload();
    }
 
    return share;
 
    /* } catch (e) {
            log.debug("result " + e.message);
            log.debug("requestInit ", JSON.stringify(requestInit, null, 4));
            log.debug("headers " + JSON.stringify(headers, null, 4));
            log.debug("url ", url);
            throw e;
        } */
  }
 
  /**
   * update a new share
   */
  public async updateShare(shareId: string, body: { password: string } | { expireDate: string } | { note: string } | { permissions: number }): Promise<void> {
    log.debug("updateShare body ", body);
 
    const requestInit: RequestInit = {
      body: JSON.stringify(body, null, 4),
      headers: this.getOcsHeaders(),
      method: "PUT",
    };
    const url = this.nextcloudOrigin + "/ocs/v2.php/apps/files_sharing/api/v1/shares/" + shareId;
 
    await this.getHttpResponse(url, requestInit, [200], { description: "Share update" });
  }
 
  /**
   * get share information
   * @param shareId
   */
  public async getShare(shareId: string): Promise<any> {
    const requestInit: RequestInit = {
      headers: this.getOcsHeaders(),
      method: "GET",
    };
    const url = this.nextcloudOrigin + "/ocs/v2.php/apps/files_sharing/api/v1/shares/" + shareId;
 
    const response: Response = await this.getHttpResponse(url, requestInit, [200], { description: "Share get" });
 
    // eslint-disable-next-line @typescript-eslint/no-unsafe-return
    return await response.json();
 
    /*
    } catch (e) {
        log.debug("result " + e.message);
        log.debug("requestInit ", JSON.stringify(requestInit, null, 4));
        log.debug("headers " + JSON.stringify(headers, null, 4));
        log.debug("url ", url);
        throw e;
    }
    */
  }
 
  /**
   * get share information
   * @param shareId
   */
  public async deleteShare(shareId: string): Promise<any> {
    const requestInit: RequestInit = {
      headers: this.getOcsHeaders(),
      method: "DELETE",
    };
    const url = this.nextcloudOrigin + "/ocs/v2.php/apps/files_sharing/api/v1/shares/" + shareId;
 
    const response: Response = await this.getHttpResponse(url, requestInit, [200], { description: "Share delete" });
  }
 
  // ***************************************************************************************
  // notfication management
  // ***************************************************************************************
  /**
   * @returns array of notification objects
   */
  // eslint-disable-next-line @typescript-eslint/ban-types
  public async getNotifications(): Promise<object[]> {
    const requestInit: RequestInit = {
      headers: this.getOcsHeaders(),
      method: "GET",
    };
 
    const response: Response = await this.getHttpResponse(this.nextcloudOrigin + "/ocs/v2.php/apps/notifications/api/v2/notifications", requestInit, [200, 404], { description: "Notifications get" });
 
    // no notification found
    if (response.status === 404) {
      return [];
    }
 
    const rawResult: any = await response.json();
 
    let notifications = [];
 
    if (rawResult && rawResult.ocs && rawResult.ocs.data) {
      notifications = rawResult.ocs.data;
    } else {
      throw new ClientError("Fatal Error: nextcloud notifications data missing", "ERR_SYSTEM_INFO_MISSING_DATA"); // @todo wrong error message
    }
 
    // eslint-disable-next-line @typescript-eslint/ban-types
    const result: object[] = notifications;
    return result;
  }
 
  // eslint-disable-next-line @typescript-eslint/ban-types
  public async getUpdateNotifications(version: string): Promise<object> {
    // @todo refactoring... /ocs/v2.php/apps/notifications/api/v2/notifications/<id>   (GET/DELETE)
 
    const requestInit: RequestInit = {
      headers: this.getOcsHeaders(),
      method: "GET",
    };
 
    const response: Response = await this.getHttpResponse(this.nextcloudOrigin + `/ocs/v2.php/apps/updatenotification/api/v1/applist/${version}`, requestInit, [200], { description: "UpdateNotifications get" });
 
    // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
    const rawResult: any = await response.json();
 
    let updateNotification = {};
 
    // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
    if (rawResult && rawResult.ocs && rawResult.ocs.data) {
      updateNotification = rawResult.ocs.data;
    } else {
      throw new ClientError("Fatal Error: nextcloud notifications data missing", "ERR_SYSTEM_INFO_MISSING_DATA");
    }
 
    // eslint-disable-next-line @typescript-eslint/ban-types
    const result: object = updateNotification;
    return result;
  }
 
  // @todo to be refactored to user
  public async sendNotificationToUser(userId: string, shortMessage: string, longMessage?: string): Promise<void> {
    const requestInit: RequestInit = {
      headers: new Headers({
        // eslint-disable-next-line @typescript-eslint/naming-convention
        Accept: "application/json",
        // eslint-disable-next-line @typescript-eslint/naming-convention
        "Content-Type": "application/x-www-form-urlencoded",
        // eslint-disable-next-line @typescript-eslint/naming-convention
        "OCS-APIRequest": "true",
      }),
      method: "POST",
    };
 
    if (!longMessage) {
      longMessage = "";
    }
    longMessage = `&longMessage=${encodeURIComponent(longMessage)}`;
    const queryString = `${encodeURIComponent(userId)}?shortMessage=${encodeURIComponent(shortMessage)}${longMessage}`;
    await this.getHttpResponse(this.nextcloudOrigin + `/ocs/v2.php/apps/admin_notifications/api/v1/notifications/${queryString}`, requestInit, [200], { description: "User create" });    
    // const response: Response = await this.getHttpResponse(this.nextcloudOrigin + `/ocs/v2.php/apps/admin_notifications/api/v1/notifications/${queryString}`, requestInit, [200], { description: "User create" });
    // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
    // const rawResult: any = await response.json();
    //        console.log(rawResult);
  }
 
  // ***************************************************************************************
  // apps management
  // ***************************************************************************************
  /**
   * returns apps
   */
  public async getApps(): Promise<string[]> {
    const requestInit: RequestInit = {
      headers: this.getOcsHeaders(),
      method: "GET",
    };
 
    const response: Response = await this.getHttpResponse(this.getOcsUrl(`/apps`), requestInit, [200], { description: "Apps get" });
 
    // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
    const rawResult: any = await response.json();
 
    let apps = [];
 
    // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
    if (rawResult && rawResult.ocs && rawResult.ocs.data) {
      apps = rawResult.ocs.data;
    } else {
      throw new ClientError("Fatal Error: nextcloud apps data missing", "ERR_SYSTEM_INFO_MISSING_DATA");
    }
 
    const result: string[] = apps;
 
    return result;
  }
  // eslint-disable-next-line @typescript-eslint/ban-types
  public async getAppInfos(appName: string): Promise<object> {
    const requestInit: RequestInit = {
      headers: this.getOcsHeaders(),
      method: "GET",
    };
 
    const response: Response = await this.getHttpResponse(this.getOcsUrl(`/apps/${appName}`), requestInit, [200], { description: "App Infos get" });
 
    // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
    const rawResult: any = await response.json();
 
    let appInfo = {};
 
    // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
    if (rawResult && rawResult.ocs && rawResult.ocs.data) {
      appInfo = rawResult.ocs.data;
    } else {
      throw new ClientError("Fatal Error: nextcloud apps data missing", "ERR_SYSTEM_INFO_MISSING_DATA");
    }
 
    // eslint-disable-next-line @typescript-eslint/ban-types
    const result: object = appInfo;
 
    return result;
  }
 
  // ***************************************************************************************
  // private methods
  // ***************************************************************************************
 
  /**
   * asserts valid xml
   * asserts multistatus response
   * asserts that a href is available in the multistatus response
   * asserts propstats and prop
   * @param response the http response
   * @param href get only properties that match the href
   * @returns array of properties
   * @throws GeneralError
   */
  private async getPropertiesFromWebDAVMultistatusResponse(response: Response, href: string): Promise<any[]> {
    const responseContentType: string | null = response.headers.get("Content-Type");
 
    if (!responseContentType) {
      throw new ClientError("Response content type expected", "ERR_RESPONSE_WITHOUT_CONTENT_TYPE_HEADER");
    }
 
    if (responseContentType.indexOf("application/xml") === -1) {
      throw new ClientError("XML response content type expected", "ERR_XML_RESPONSE_CONTENT_TYPE_EXPECTED");
    }
 
    const xmlBody: string = await response.text();
 
    if (parser.validate(xmlBody) !== true) {
      throw new ClientError(`The response is not valid XML: ${xmlBody}`, "ERR_RESPONSE_NOT_INVALID_XML");
    }
    const options: any = {
      ignoreNameSpace: true,
    };
    const body: any = parser.parse(xmlBody, options);
 
    // ensure that we have a multistatus response
    if (!body.multistatus || !body.multistatus.response) {
      throw new ClientError(`The response is is not a WebDAV multistatus response`, "ERR_RESPONSE_NO_MULTISTATUS_XML");
    }
 
    // ensure that response is always an array
    if (body.multistatus.response.href || body.multistatus.response.propstat) {
      body.multistatus.response = new Array(body.multistatus.response);
    }
    /*
                if (body.multistatus.response.propstat) {
                    body.multistatus.response = [body.multistatus.response];
                }
        */
    const responseProperties: any[] = [];
    for (const res of body.multistatus.response) {
      if (!res.href) {
        throw new ClientError(`The mulitstatus response must have a href`, "ERR_RESPONSE_MISSING_HREF_MULTISTATUS");
      }
 
      if (!res.propstat) {
        throw new ClientError(`The mulitstatus response must have a "propstat" container`, "ERR_RESPONSE_MISSING_PROPSTAT");
      }
      let propStats = res.propstat;
 
      // ensure an array
      if (res.propstat.status || res.propstat.prop) {
        propStats = [res.propstat];
      }
 
      for (const propStat of propStats) {
        if (!propStat.status) {
          throw new ClientError(`The propstat must have a "status"`, "ERR_RESPONSE_MISSING_PROPSTAT_STATUS");
        }
        if (propStat.status === "HTTP/1.1 200 OK") {
          if (!propStat.prop) {
            throw new ClientError(`The propstat must have a "prop"`, "ERR_RESPONSE_MISSING_PROPSTAT_PROP");
          }
          const property: any = propStat.prop;
          // eslint-disable-next-line no-underscore-dangle
          property._href = res.href;
          responseProperties.push(property);
        }
      }
      //            }
    }
    // eslint-disable-next-line @typescript-eslint/no-unsafe-return
    return responseProperties;
  }
 
  /**
   * nextcloud creates a csrf token and stores it in the html header attribute
   * data-requesttoken
   * this function is currently not used
   * @returns the csrf token / requesttoken
   */
  /*
        private async getCSRFToken(): Promise<string> {
 
            const requestInit: RequestInit = {
                method: "GET",
            };
 
            const response: Response = await this.getHttpResponse(
                this.nextcloudOrigin,
                requestInit,
                [200],
                { description: "CSER token get" });
 
            const html = await response.text();
 
            const requestToken: string = html.substr(html.indexOf("data-requesttoken=") + 19, 89);
            log.debug("getCSRFToken ", requestToken);
            return requestToken;
        }
    */
 
  private async getHttpResponse(url: string, requestInit: RequestInit, expectedHttpStatusCode: number[], context: IRequestContext): Promise<Response> {
    if (!requestInit.headers) {
      requestInit.headers = new Headers();
    }
 
    /* istanbul ignore else */
    if (this.fakeServer) {
      return await this.fakeServer.getFakeHttpResponse(url, requestInit, expectedHttpStatusCode, context);
    } else {
      return await this.httpClient!.getHttpResponse(url, requestInit, expectedHttpStatusCode, context);
    }
  }
 
  /**
   * get contents array of a folder
   * @param folderName Name of the folder like "/company/branches/germany"
   * @param folderIndicator true if folders are requested otherwise files
   * @returns array of folder contents meta data
   */
  private async contents(folderName: string, folderIndicator: boolean): Promise<any[]> {
    log.debug("Contents: folder ", folderName);
    const folders: Folder[] = [];
    folderName = this.sanitizeFolderName(folderName);
    const resultArray: any[] = [];
 
    if (folderIndicator === true) {
      log.debug("Contents: get folders");
    } else {
      log.debug("Contents: get files");
    }
    try {
      const folderContentsArray = await this.getFolderContents(folderName);
 
      // log.debug("###########################");
      // log.debug("$s", JSON.stringify(folderContentsArray, null, 4));
      // log.debug("###########################");
 
      for (const folderElement of folderContentsArray) {
        if (folderElement.type === "directory") {
          if (folderIndicator === true) {
            resultArray.push(folderElement);
          }
        } else {
          if (folderIndicator === false) {
            log.debug("Contents folder element file ", folderElement);
            resultArray.push(folderElement);
          }
        }
      }
    } catch (e) {
      log.debug("Contents: exception occurred ", e.message);
    }
 
    // eslint-disable-next-line @typescript-eslint/no-unsafe-return
    return resultArray;
  }
 
  private sanitizeFolderName(folderName: string): string {
    if (folderName[0] !== "/") {
      folderName = "/" + folderName;
    }
    // remove trailing "/" es
    folderName = folderName.replace(/\/+$/, "");
    if (folderName === "") {
      folderName = "/";
    }
 
    return folderName;
  }
 
  private getTagIdFromHref(href: string): number {
    return parseInt(href.split("/")[href.split("/").length - 1], 10);
  }
 
  private async createFolderInternal(folderName: string): Promise<void> {
    const url: string = this.webDAVUrl + folderName;
    log.debug("createFolderInternal ", url);
 
    const requestInit: RequestInit = {
      method: "MKCOL",
    };
    try {
      await this.getHttpResponse(url, requestInit, [201], { description: "Folder create" });
    } catch (err) {
      log.debug(`Error in createFolderInternal ${err.message as string} ${requestInit.method || ""} ${url}`);
      throw err;
    }
  }
 
  private async stat(fileName: string): Promise<IStat> {
    const url: string = this.webDAVUrl + fileName;
    log.debug("stat ", url);
 
    const requestInit: RequestInit = {
      body: `<?xml version="1.0"?>
            <d:propfind  xmlns:d="DAV:" xmlns:oc="http://owncloud.org/ns" xmlns:nc="http://nextcloud.org/ns">
            <d:prop>
                  <d:getlastmodified />
                  <d:getetag />
                  <d:getcontenttype />
                  <d:resourcetype />
                  <oc:fileid />
                  <oc:permissions />
                  <oc:size />
                  <d:getcontentlength />
                  <nc:has-preview />
                  <oc:favorite />
                  <oc:comments-unread />
                  <oc:owner-display-name />
                  <oc:share-types />
            </d:prop>
          </d:propfind>`,
      // headers: new Headers({ Depth: "0" }),
      headers: new Headers(),
      method: "PROPFIND",
    };
    let response: Response;
    try {
      response = await this.getHttpResponse(url, requestInit, [207], { description: "File/Folder get details" });
    } catch (err) {
      log.debug(`Error in stat ${err.message as string} ${requestInit.method || ""} ${url}`);
      throw err;
    }
 
    const properties: any[] = await this.getPropertiesFromWebDAVMultistatusResponse(response, "");
    let resultStat: IStat | null = null;
 
    for (const prop of properties) {
      resultStat = {
        basename: basename(fileName),
        fileid: prop.fileid,
        filename: fileName,
        lastmod: prop.getlastmodified,
        type: "file",
      };
 
      if (prop.getcontentlength) {
        resultStat.size = prop.getcontentlength;
      } else {
        resultStat.type = "directory";
      }
 
      if (prop.getcontenttype) {
        resultStat.mime = prop.getcontenttype;
      }
    }
 
    if (!resultStat) {
      log.debug("Error: response ", JSON.stringify(properties, null, 4));
      throw new ClientError("Error getting status information from : " + url, "ERR_STAT");
    }
    return resultStat;
  }
 
  private getOcsMetaStatus(input: any): { code: number; message: string } {
    let code: number;
    let message: string = "";
    if (input.ocs && input.ocs.meta && input.ocs.meta.statuscode) {
      code = input.ocs.meta.statuscode;
      if (input.ocs.meta.message) {
        message = input.ocs.meta.message;
      }
      return { code, message };
    }
    throw new InvalidServiceResponseFormatError("Fatal Error: The OCS meta status could not be retrieved from OCS response");
  }
 
  private getOcsHeaders(): Headers {
    return new Headers({
      // eslint-disable-next-line @typescript-eslint/naming-convention
      "OCS-APIRequest": "true",
      // eslint-disable-next-line @typescript-eslint/naming-convention
      "Content-Type": "application/json",
      // eslint-disable-next-line @typescript-eslint/naming-convention
      Accept: "application/json",
    });
  }
 
  private getOcsUrl(suffix: string): string {
    /*
        if (!suffix) {
            suffix = "";
        }
        if (!suffix.startsWith("/")) {
            suffix = `/${suffix}`
        }
        */
    return `${this.nextcloudOrigin}/ocs/v1.php/cloud${suffix}`;
  }
 
  private async putFileContents(fileName: string, data: Buffer | NodeJS.ReadableStream): Promise<Response> {
    const url: string = this.webDAVUrl + fileName;
    log.debug("putFileContents ", url);
 
    const requestInit: RequestInit = {
      body: data,
      method: "PUT",
    };
 
    let description = "File save content ";
    Eif (data instanceof Buffer) {
      description += "from buffer";
    } else {
      description += "from stream";
    }
    return await this.getHttpResponse(url, requestInit, [201, 204], { description });
  }
}