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nextcloud-node-client

Nextcloud client API for node.js TypeScript applications


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nextcloud-node-client

Access nextcloud remotely from node.js applications with a rich and simple TypeScript / JavaScript API.

lang: Typescript NPM Downloads Dependency Status Coverage Status Install Size documentation

  • upload and download files
  • create files and folder structures
  • all user management functions
  • create shares
  • tagging and commenting

The nextcloud node client is used to automate access to nextcloud servers from node.js apppliactions.

Example

// typescript
import Client, { File, Folder, Tag, Share } from "nextcloud-node-client";

(async () => {
    try {
        // create a new client using connectivity information from environment 
        const client = new Client();
        // create a folder structure if not available
        const folder: Folder = await client.createFolder("folder/subfolder");
        // create file within the folder
        const file: File = await folder.createFile("myFile.txt", Buffer.from("My file content"));
        // add a tag to the file and create the tag if not existing
        await file.addTag("MyTag");
        // add a comment to the file
        await file.addComment("myComment");
        // get the file content
        const content: Buffer = await file.getContent();
        // share the file publicly with password and note
        const share: Share = await client.createShare({ fileSystemElement: file });
        await share.setPassword("some password");
        await share.setNote("some note\nnew line");
        // use the url to access the share 
        const shareLink:string = share.url;
        // delete the folder including the file and share
        await folder.delete();
    } catch (e) {
        // some error handling   
        console.log(e);
    }
})();

Documentation

Installation

npm install nextcloud-node-client

Security and access management

The client requires the url of the nextcloud server and the credentials.

Use an app specific password generated in the security - devices & sessions section of the nextcloud settings.

Environment

Credentials can be specified in the environment:

NEXTCLOUD_USERNAME= "<your user name>"
NEXTCLOUD_PASSWORD = "<your password>"
NEXTCLOUD_URL= "https://<your nextcloud host>"

The cloud service configuration VCAP_SERVICES can be used alternativley (refer to the Cloud Foundry documentation for details).

The nextcloud credentials are stored in the section for user provided services user-provided. The client is able to access the service credentials by providing the instance name.

{
    "user-provided": [
        {
            "credentials": {
                "password": "<your password>",
                "url": "https://<your nextcloud host>",
                "username": "<your user name>"
            },
            "name": "<your service instance name>"
        }
    ]
}

Creating a client

Creating a nextcloud client

  // uses the environment to initialize
  import Client from "nextcloud-node-client";
  const client = new Client();
  // uses explicite credentials
  import Client, { Server } from "nextcloud-node-client";
  const server: Server = new Server(
            { basicAuth:
                { password: "<your password>",
                  username: "<your user name>",
                },
                url: "https://<your nextcloud host>",
            });

  const client = new Client(server);

Concepts and Philosophy

The nextcloud-node-client provids a object oriented API in TypeScript. The focus is to provide a simple access to the nextcloud resources rather than a full functional coverage.

nextcloud node client object model

The client comes with an object oriented API to access the APIs of nextcloud. The following object types are supported:

Client

The client is the root object and represents the connection to the nextcloud server. The client is used to get access to the root folder and the tag repository.

Folder

The folder is the representation of a nextcloud folder. It may contain many files. All files of a folder are deleted, if the folder is deleted.

File

The file is the representation of a nextcloud file. Every file is contained in a folder.

Tag

Tags are used to filter for file and folders. Tags can be created and assigned to files or folders.

Share

Files and folders can be shared with user, user groups or publicly. The share can be password protected and an exiration date can be applied.

API

This is an overview of the client API. Details can be found in the API docs

Client

  • factory method for client
  • create folder
  • get folder, get root folder
  • create file
  • get file
  • create tag*
  • get tags, by name, by id
  • get quota
  • find users, get user by id
  • create user
  • mass creations and changes of users
  • get user groups, by id
  • create user group

Folder

  • get name, id, base name, urls
  • delete
  • create sub folders
  • get sub folder
  • create file
  • get files
  • get tags, add tag, remove tag
  • add comment
  • get comments
  • move/rename

File

  • get name, id, base name, urls, content type
  • get content
  • delete
  • get tags, add tag, remove tag
  • add comment
  • get comments
  • get folder
  • move/rename

Tag

  • get name, id
  • delete*

Share

  • create, update, delete

User Group

  • delete
  • get members, get subadmins

User

  • delete
  • get properties (display name, email, quota and usage, language, last login, ...)
  • change properties (display name, email, quota, language, password, ...)
  • send welcome email
  • enable / disable
  • promote to super admin / demote from super admin
  • get member groups, get subadmin groups
  • add to user group as member / remove from member user group
  • promote as subadmin for user group / demote from subadmin user group

* admin permissions required

API Examples

Quota
    const q: IQuota = await client.getQuota();  
    // { used: 479244777, available: 10278950773 }
Sytem information
    const si: ISystemInfo = await client.getSystemInfo();  
Create folder
    // create folder
    const folder: Folder = await client.createFolder("/products/brooms");
    // create subfolder
    const subfolder: Folder = await folder.createSubFolder("soft brooms");
    // "/products/brooms/soft brooms"
    
Get folder(s)
    // get folder
    const folder: Folder = await client.getFolder("/products");
    // get subfolders
    const subfolders: Folder[] = await folder.getSubFolders();    
Delete folder
    // get folder
    const folder: Folder = await client.getFolder("/products");
    await folder.delete();
Create file
    const folder = await client.getFolder("/products");
    const file = folder.createFile("MyFile.txt", new Buffer("My new file"));
Get file
    const file = await client.getFile("/products/MyFile.txt");
    // or
    const folder = await client.getFolder("/products");
    const file = await folder.getFile("MyFile.txt");
    // file: name, baseName, lastmod, size, mime
Get file content
    const file = await client.getFile("/products/MyFile.txt");
    const buffer = await file.getContent();
Get file Url
    const file = await client.getFile("/products/MyFile.txt");
    const url = await file.getUrl();
Add tag to file
    const file = await client.getFile("/products/MyFile.txt");
    await file.addTag("myTag");
Delete file
    const file = await client.getFile("/products/MyFile.txt");
    await file.delete();
Get files
    const folder = await client.getFolder("/products");
    const files = await folder.getFiles();
Move and/or rename file
    const file = await client.getFile("/products/MyFile.txt");
    await file.move("/products/brooms/MyFileRenamed.txt");
Create, change and delete a share
    const file = await client.getFile("/products/MyFile.txt");
    // share the file (works also for folder)
    const createShare: ICreateShare = { fileSystemElement: file };
    const share: Share = await client.createShare(createShare);
    // change share settings
    await share.setPassword("some password");
    await share.setNote("some note\nnew line");
    await share.setExpiration(new Date(2020, 11, 5));  
    // use the url to access the share 
    const shareLink:string = share.url;
    // delete share, if not required anymore
    await share.delete();

Architecture

The nextcloud node client can be used by node applications to extend the nextcloud functionality remotely. The client uses only HTTP apis of nextcloud for access.

nextcloud node client component architecture

Examples

User management

// typescript
import Client, { User, UserGroup } from "nextcloud-node-client";

(async () => {
    try {
        // create a new client using connectivity 
        // information from environment
        const client = new Client();
        // create a new user group
        const group: UserGroup = await client.createUserGroup("MyGroup");
        // create a new user with a email or password
        const user: User = await client.createUser({ id: "MyUserId", email: "mail@example.com" });
        // set some properties 
        // ... password, phone, website, twitter, address, email, locale
        await user.setDisplayName("My Display Name");
        await user.setQuota("5 GB");
        await user.setLanguage("en");
        // get properties 
        // ... quota, user friendly quota, phone, website, twitter, address, locale
        const email = await user.getEmail();
        // disable user
        await user.disable();
        // enable user
        await user.enable();
        // promote to super administrator
        await user.promoteToSuperAdmin();
        // demote from super administrator
        await user.demoteFromSuperAdmin();
        // resend welcome email to user
        await user.resendWelcomeEmail();
        // add to user group as member
        await user.addToMemberUserGroup(group);
        // get member user groups
        const memberGroups: UserGroup[] = await user.getMemberUserGroups();
        // get user ids of memembers
        await group.getMemberUserIds();
        // remove user from member group
        await user.removeFromMemberUserGroup(group);
        // promote user as subadmin for user group
        await user.promoteToUserGroupSubadmin(group);
        // get user groups where the user is subadmin
        const subadminGroups: UserGroup[] = await user.getSubadminUserGroups();
        // get user ids of subadmins
        await group.getSubadminUserIds();
        // demote user from being subadmin for user group
        await user.demoteFromSubadminUserGroup(group);
        // delete the user
        await user.delete();
        // delete the user group
        await group.delete();
        // mass creations / updates of users
        // groups are created on the fly
        await client.upsertUsers([
            { id: "myUser1", email: "myUser1@example.com", enabled: false, memberGroups: ["group1", "group2"] },
            { id: "myUser2", password: "mySecurePassword", displayName: "My Name", superAdmin: true, quota: "2 GB" },
            // ...
        ]);
    } catch (e) {
        // use specific exception *error classes 
        // for error handling documented in @throws
    }
})();

Tagging

// typescript
import Client, { File, Folder, Share, Tag, FileSystemElement } from "nextcloud-node-client";

(async () => {
    try {
        // create a new client using connectivity information from environment
        const client = new Client();
        // create a folder structure if not available
        const folder: Folder = await client.createFolder("folder/subfolder");
        // create file within the folder
        const file: File = await folder.createFile("myFile.txt", Buffer.from("My file content"));
        // create two tags
        const tag1: Tag = await client.createTag("tag 1");
        const tag2: Tag = await client.createTag("tag 2");
        // assign tag to folder
        folder.addTag(tag1.name);
        // assign tag to files
        file.addTag(tag1.name);
        file.addTag(tag2.name);

        // get list of file system elements with the tag1 assigned
        let fse: FileSystemElement[] = await client.getFileSystemElementByTags([tag1]);
        // print names of folder and file
        console.log(fse[0].name);
        console.log(fse[1].name);

        // get list of file system elements with the tag1 and tag2
        fse = await client.getFileSystemElementByTags([tag1, tag2]);
        // print name of file
        console.log(fse[0].name);

        // delete the tags
        await tag1.delete();
        await tag2.delete();
        // delete the folder including the file and share
        await folder.delete();
    } catch (e) {
        // some error handling
        console.log(e);
    }
})();

Quality

Tested with nextcloud 17.0.1, 18.0.0

A code coverage of 100% is aspired

Todo list

Version 2.0

  • remove vcap services support
  • remove server object and replace with connection object
  • connection object handles all http requets (new Connection, conn.connect() ...)
  • refactor client - use connection instead of client in sub objects move client methods to sub objects
  • Move exceptions to relevant objects, prefix all exceptions with "Error"
  • Remove "I" from interface names

Sharing

Share with

  • user
  • usergroup
  • email-address
  • Search for files api
  • client in github actions - upload files

Server API

  • support also the nextcloud server url instead of the WebDAV url only

Download

  • download folder contents example
  • download folder contents to disk recursively

Upload

  • upload local file on disk to nextcloud
  • upload local folder on disk to nextcloud recursively

Get Files recursively

  • command get files recurively
  • filter get files recurively
  • example get files recurively

Access using tags

* Get files and folders by tags client.getFileSystemObjectByTags

User management

User:

  • get
  • getIds limit, offset, search
  • create
  • update
  • delete
  • deactivate
  • add/remove group member
  • add/remove group subadmin
  • example in readme
  • send notification

User group:

  • get
  • create
  • delete

Streams

Create file and get file using streams

Eventing

  • create event objects
  • start observer
  • subscribe to events and register handler functions
  • telegram support

notifications

basic methods are available since 1.2.0 without strong typing

  • notification object

Refactoring

  • Introduction of exception classes instead of error codes (breaking change)
  • Move from codecov to coveralls
  • move to eslint instead of using tslint
  • remove "I" from all interfaces - (breaking change)

Search

  • Search for files api
  • client in github actions - upload files

License

Apache

Keywords

FAQs

Last updated on 27 Jul 2020

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