Class Client

Client class for managing OAuth client applications

This class represents an OAuth client application that can authenticate with the Mosaia API through various OAuth flows. It manages client credentials, redirect URIs, and scopes for secure API access.

Features:

  • OAuth client management
  • Secure credential handling
  • Redirect URI configuration
  • Scope management
  • Flow configuration

Remarks

OAuth clients are essential for:

  • Third-party application integration
  • Secure API access
  • User authentication flows
  • Resource authorization
  • Access token management

The class supports multiple OAuth 2.0 flows:

  • Authorization Code (with PKCE)
  • Client Credentials
  • Resource Owner Password

Example

Basic client setup:

import { Client } from 'mosaia-node-sdk';

// Create an OAuth client for web application
const webClient = new Client({
  name: 'Web Dashboard',
  client_id: process.env.CLIENT_ID,
  client_secret: process.env.CLIENT_SECRET,
  redirect_uris: ['https://app.example.com/oauth/callback'],
  scopes: ['read:users', 'write:data']
});

await webClient.save();

Example

Service account setup:

// Create a service account client
const serviceClient = new Client({
  name: 'Background Service',
  client_id: process.env.SERVICE_CLIENT_ID,
  client_secret: process.env.SERVICE_CLIENT_SECRET,
  grant_types: ['client_credentials'],
  scopes: ['service:full'],
  metadata: {
    service: 'data-processor',
    environment: 'production'
  }
});

if (serviceClient.isActive()) {
  console.log('Service client ready');
  console.log('Available scopes:', serviceClient.scopes);
}

Hierarchy (View Summary)

Constructors

constructor

Methods

isActive toJSON toAPIPayload update save delete

Constructors

constructor

  • new Client(data: Partial<ClientInterface>, uri?: string): Client

    Creates a new OAuth client instance

    Initializes an OAuth client application with the provided configuration. The client manages authentication and authorization for accessing the Mosaia API securely.

    Parameters

    • data: Partial<ClientInterface>

      Configuration data including: - name: Client application name - client_id: OAuth client ID - client_secret: OAuth client secret - redirect_uris: Authorized redirect URIs - scopes: Authorized scope list - grant_types: Supported OAuth grant types - metadata: Custom metadata object

    • Optionaluri: string

      Optional custom URI path for the client endpoint

    Returns Client

    Example

    Web application client:

    const webClient = new Client({
      name: 'Web App',
      client_id: process.env.CLIENT_ID,
      client_secret: process.env.CLIENT_SECRET,
      redirect_uris: [
        'https://app.example.com/oauth/callback',
        'http://localhost:3000/callback'  // Development
      ],
      scopes: ['read:users', 'write:data']
    });

    Example

    Machine-to-machine client:

    const serviceClient = new Client({
      name: 'API Service',
      client_id: process.env.SERVICE_CLIENT_ID,
      client_secret: process.env.SERVICE_CLIENT_SECRET,
      grant_types: ['client_credentials'],
      scopes: ['service:full'],
      metadata: {
        type: 'service-account',
        owner: 'system'
      }
    }, '/service/client');

Methods

isActive

  • isActive(): boolean

    Check if the entity is active

    This method checks the active status of the entity. Most entities in the system can be active or inactive, which affects their availability and usability in the platform.

    Returns boolean

    True if the entity is active, false otherwise

    Example

    const user = new User(userData);
    if (user.isActive()) {
      // Perform operations with active user
    } else {
      console.log('User is inactive');
    }

toJSON

  • toJSON(): ClientInterface

    Convert model instance to interface data

    This method serializes the model instance to a plain object that matches the interface type. This is useful for:

    • Sending data to the API
    • Storing data in a database
    • Passing data between components
    • Debugging model state

    Returns ClientInterface

    The model data as a plain object matching the interface type

    Example

    const user = new User({
      email: 'user@example.com',
      firstName: 'John'
    });

    const data = user.toJSON();
    console.log(data); // { email: '...', firstName: '...' }

    // Use with JSON.stringify
    const json = JSON.stringify(user);

toAPIPayload

  • toAPIPayload(): Partial<ClientInterface>

    Convert model instance to API payload

    This method creates a payload suitable for API requests by:

    • Converting the model to a plain object
    • Removing read-only fields (like 'id')
    • Ensuring proper data format for the API

    Returns Partial<ClientInterface>

    A clean object suitable for API requests

    Example

    const user = new User({
      id: '123',           // Will be removed from payload
      email: 'new@example.com',
      firstName: 'John'
    });

    const payload = user.toAPIPayload();
    // payload = { email: '...', firstName: '...' }
    // Note: 'id' is removed as it's read-only

    await apiClient.POST('/users', payload);

update

  • update(updates: Partial<ClientInterface>): void

    Update model data with new values

    This method updates the model's data and instance properties with new values. It performs a shallow merge of the updates with existing data, allowing for partial updates of the model's properties.

    Parameters

    Returns void

    Example

    const user = new User({
      email: 'old@example.com',
      firstName: 'John'
    });

    // Update multiple properties
    user.update({
      email: 'new@example.com',
      lastName: 'Doe'
    });

    // Save changes to API
    await user.save();

    Remarks

    This method only updates the local model instance. To persist changes to the API, call save after updating.

save

  • save(): Promise<ClientInterface>

    Save the model instance to the API

    This method persists the current state of the model to the API using a PUT request. It requires the model to have an ID (existing instance). For new instances, use the collection's create method instead.

    The method:

    1. Validates the model has an ID
    2. Sends current data to the API
    3. Updates local instance with API response

    Returns Promise<ClientInterface>

    Promise resolving to the updated model data

    Throws

    When model has no ID

    Throws

    When API request fails

    Example

    const user = new User({
      id: '123',
      email: 'user@example.com'
    });

    // Update and save
    user.update({ firstName: 'John' });
    await user.save();

    Example

    Error handling:

    try {
      await user.save();
    } catch (error) {
      if (error.message.includes('ID is required')) {
        // Handle missing ID error
      } else {
        // Handle API errors
      }
    }

delete

  • delete(): Promise<void>

    Delete the model instance from the API

    This method permanently deletes the model instance from the API and clears the local data. This operation cannot be undone.

    The method:

    1. Validates the model has an ID
    2. Sends DELETE request to the API
    3. Clears local instance data on success

    Returns Promise<void>

    Promise that resolves when deletion is successful

    Throws

    When model has no ID

    Throws

    When API request fails

    Example

    Basic deletion:

    const user = await users.get({}, 'user-id');
    if (user) {
      await user.delete();
      // User is now deleted and instance is cleared
    }

    Example

    Error handling:

    try {
      await user.delete();
      console.log('User deleted successfully');
    } catch (error) {
      if (error.message.includes('ID is required')) {
        console.error('Cannot delete - no ID');
      } else {
        console.error('Deletion failed:', error.message);
      }
    }

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