Updating Genesys Cloud User Presence States via API with TypeScript

What You Will Build

This tutorial builds a TypeScript module that programs presence states for Genesys Cloud users, enforces shift-based constraints, handles concurrent updates with ETag validation, syncs status changes to external systems via webhooks, and exposes a local simulator for integration testing. The solution uses the official Genesys Cloud JavaScript SDK and direct HTTP requests for webhook dispatch and simulation. The code runs in Node.js with TypeScript 5 and requires zero manual console navigation.

Prerequisites

• OAuth Client Credentials grant type
• Required scopes: presence:write, presence:read, users:read, schedule:read
• SDK: genesyscloud v5.100+
• Runtime: Node.js 18+
• Dependencies: genesyscloud, axios, uuid, express

Authentication Setup

Genesys Cloud requires a valid OAuth 2.0 bearer token for all API calls. The Client Credentials flow is appropriate for server-side integrations. The following code fetches the token, caches it, and implements automatic refresh before expiration.

import axios, { AxiosResponse } from 'axios';

interface OAuthConfig {
  baseUrl: string;
  clientId: string;
  clientSecret: string;
  scopes: string[];
}

interface TokenCache {
  accessToken: string;
  expiresAt: number;
}

let tokenCache: TokenCache | null = null;

async function getAccessToken(config: OAuthConfig): Promise<string> {
  const now = Date.now();
  if (tokenCache && now < tokenCache.expiresAt - 60000) {
    return tokenCache.accessToken;
  }

  const url = `${config.baseUrl}/oauth/token`;
  const authHeader = Buffer.from(`${config.clientId}:${config.clientSecret}`).toString('base64');

  const formData = new URLSearchParams();
  formData.append('grant_type', 'client_credentials');
  formData.append('scope', config.scopes.join(' '));

  const response: AxiosResponse = await axios.post(url, formData, {
    headers: {
      'Authorization': `Basic ${authHeader}`,
      'Content-Type': 'application/x-www-form-urlencoded'
    }
  });

  tokenCache = {
    accessToken: response.data.access_token,
    expiresAt: now + (response.data.expires_in * 1000)
  };

  return tokenCache.accessToken;
}

Implementation

Step 1: SDK Initialization and Presence Payload Construction

The Genesys Cloud Presence API accepts availability modes and custom status messages through a structured payload. The SDK abstracts the HTTP layer but requires explicit header injection for conditional requests. The following code initializes the platform client and constructs a valid presence update object.

import { PureCloudPlatformClientV2, PresenceApi } from 'genesyscloud';

export interface PresenceUpdateRequest {
  userId: string;
  availabilityModeId: string;
  customStatusId?: string;
  customStatusMessage?: string;
  etag?: string;
}

class PresenceManager {
  private presenceApi: PresenceApi;

  constructor(private baseUrl: string, private getAuth: () => Promise<string>) {
    const client = new PureCloudPlatformClientV2();
    client.setEnvironment('mypurecloud.com');
    this.presenceApi = new PresenceApi(client);
  }

  private async getHeaders(): Promise<Record<string, string>> {
    const token = await this.getAuth();
    return {
      'Authorization': `Bearer ${token}`,
      'Content-Type': 'application/json'
    };
  }

  async updatePresence(request: PresenceUpdateRequest): Promise<{ etag: string; latencyMs: number }> {
    const headers = await this.getHeaders();
    if (request.etag) {
      headers['If-Match'] = request.etag;
    }

    const payload = {
      availabilityStatus: {
        id: request.availabilityModeId,
        name: 'Updated via API'
      },
      customStatus: request.customStatusId ? {
        id: request.customStatusId,
        name: 'API Custom Status',
        message: request.customStatusMessage || 'System generated'
      } : undefined
    };

    const startTime = Date.now();
    
    try {
      const response = await this.presenceApi.postUsersPresenceStatuses(
        request.userId,
        payload,
        { headers }
      );

      const latencyMs = Date.now() - startTime;
      const etag = response.headers['etag'] || response.headers['ETag'];

      return { etag, latencyMs };
    } catch (error) {
      throw this.handleApiError(error, request);
    }
  }
}

Step 2: Scheduling Constraints and Concurrent Update Handling

Presence changes must respect shift management rules. The system queries the user schedule endpoint, validates the requested availability mode against the active shift, and applies exponential backoff for rate limits. The ETag header prevents race conditions when multiple services attempt simultaneous updates.

import { UsersApi, SchedulesApi } from 'genesyscloud';

export interface ShiftValidationResult {
  allowed: boolean;
  reason: string;
}

class PresenceManager {
  // ... previous code ...

  private usersApi: UsersApi;
  private schedulesApi: SchedulesApi;

  constructor(private baseUrl: string, private getAuth: () => Promise<string>) {
    const client = new PureCloudPlatformClientV2();
    client.setEnvironment('mypurecloud.com');
    this.presenceApi = new PresenceApi(client);
    this.usersApi = new UsersApi(client);
    this.schedulesApi = new SchedulesApi(client);
  }

  async validateShiftConstraint(userId: string, requestedModeId: string): Promise<ShiftValidationResult> {
    try {
      const headers = await this.getHeaders();
      const scheduleResponse = await this.schedulesApi.getUserSchedule(userId, { headers });
      
      const activeShift = scheduleResponse.data.schedules?.find(s => 
        s.status === 'active' && new Date(s.startTime) <= new Date() && new Date(s.endTime) >= new Date()
      );

      if (!activeShift) {
        return { allowed: false, reason: 'No active shift found for user' };
      }

      const allowedModes = activeShift.allowedAvailabilityModes || [];
      const modeAllowed = allowedModes.some(m => m.id === requestedModeId);

      return {
        allowed: modeAllowed,
        reason: modeAllowed ? 'Shift allows requested mode' : 'Requested mode violates shift constraints'
      };
    } catch (error) {
      return { allowed: false, reason: 'Schedule validation failed' };
    }
  }

  private async handleApiError(error: unknown, request: PresenceUpdateRequest): Promise<never> {
    const axiosError = error as any;
    const status = axiosError?.response?.status;

    if (status === 409) {
      throw new Error(`Concurrency conflict for user ${request.userId}. ETag mismatch detected.`);
    }
    if (status === 412) {
      throw new Error(`Precondition failed. Presence state changed since last read.`);
    }
    if (status === 429) {
      await this.retryWithBackoff(request);
    }
    if (status === 401 || status === 403) {
      throw new Error(`Authentication or authorization failed. Verify scopes: presence:write, presence:read`);
    }
    throw new Error(`Presence update failed with status ${status || 'unknown'}`);
  }

  private async retryWithBackoff(request: PresenceUpdateRequest, attempt = 1): Promise<void> {
    const delay = Math.min(1000 * Math.pow(2, attempt - 1), 10000);
    await new Promise(resolve => setTimeout(resolve, delay));
    
    if (attempt < 3) {
      await this.updatePresence(request);
    } else {
      throw new Error('Rate limit exceeded after 3 retries');
    }
  }
}

Step 3: Automated Transitions, Webhook Sync, and Audit Logging

The system monitors calendar events and focus mode triggers, dispatches status changes to external collaboration tools, tracks transition latency, and writes structured audit logs for compliance. All operations run asynchronously without blocking the main event loop.

import fs from 'fs';
import path from 'path';

interface AuditLogEntry {
  timestamp: string;
  userId: string;
  action: 'presence_update' | 'shift_validation' | 'webhook_dispatch';
  requestMode: string;
  result: 'success' | 'failure';
  latencyMs: number;
  etag?: string;
  error?: string;
}

class PresenceManager {
  // ... previous code ...

  private webhookUrl: string;
  private auditLogPath: string;

  constructor(baseUrl: string, getAuth: () => Promise<string>, webhookUrl: string, logPath: string) {
    // ... initialization ...
    this.webhookUrl = webhookUrl;
    this.auditLogPath = logPath;
  }

  async triggerAutomatedTransition(userId: string, modeId: string, reason: string): Promise<void> {
    const validation = await this.validateShiftConstraint(userId, modeId);
    if (!validation.allowed) {
      this.writeAuditLog({
        timestamp: new Date().toISOString(),
        userId,
        action: 'shift_validation',
        requestMode: modeId,
        result: 'failure',
        latencyMs: 0,
        error: validation.reason
      });
      throw new Error(`Transition blocked: ${validation.reason}`);
    }

    const result = await this.updatePresence({
      userId,
      availabilityModeId: modeId,
      customStatusMessage: `Auto-triggered: ${reason}`
    });

    await this.syncToWebhook(userId, modeId, result.etag);
    
    this.writeAuditLog({
      timestamp: new Date().toISOString(),
      userId,
      action: 'presence_update',
      requestMode: modeId,
      result: 'success',
      latencyMs: result.latencyMs,
      etag: result.etag
    });
  }

  private async syncToWebhook(userId: string, modeId: string, etag: string | undefined): Promise<void> {
    try {
      const webhookPayload = {
        event: 'presence.status.changed',
        timestamp: new Date().toISOString(),
        data: { userId, modeId, etag }
      };

      await axios.post(this.webhookUrl, webhookPayload, {
        headers: { 'Content-Type': 'application/json' },
        timeout: 5000
      });
    } catch (error) {
      console.error('Webhook sync failed:', error);
    }
  }

  private writeAuditLog(entry: AuditLogEntry): void {
    const logLine = JSON.stringify(entry) + '\n';
    fs.appendFileSync(this.auditLogPath, logLine, 'utf8');
  }
}

Step 4: Presence Simulator for Integration Testing

Integration tests require a deterministic mock that returns predictable ETags, validates payload structure, and simulates platform latency. The following Express server exposes endpoints that mirror the Genesys Cloud Presence API surface.

import express from 'express';
import { v4 as uuidv4 } from 'uuid';

export function createPresenceSimulator(port: number = 3456): express.Express {
  const app = express();
  app.use(express.json());

  const presenceStore = new Map<string, { etag: string; status: any }>();

  app.post('/api/v2/users/:userId/presence/statuses', (req, res) => {
    const { userId } = req.params;
    const { availabilityStatus, customStatus } = req.body;

    if (!availabilityStatus?.id) {
      return res.status(400).json({ errors: ['availabilityStatus.id is required'] });
    }

    const currentEtag = req.headers['if-match'] as string;
    const stored = presenceStore.get(userId);

    if (currentEtag && stored && stored.etag !== currentEtag) {
      return res.status(409).json({ errors: ['ETag mismatch'] });
    }

    const newEtag = uuidv4();
    presenceStore.set(userId, { etag: newEtag, status: req.body });

    res.set('ETag', newEtag);
    res.json({
      id: userId,
      availabilityStatus,
      customStatus,
      self: { href: `/api/v2/users/${userId}/presence/statuses` }
    });
  });

  app.listen(port, () => {
    console.log(`Presence simulator listening on port ${port}`);
  });

  return app;
}

Complete Working Example

The following script combines authentication, presence management, shift validation, webhook synchronization, audit logging, and the simulator into a single executable module. Replace the placeholder credentials with valid values before execution.

import { PureCloudPlatformClientV2, PresenceApi, UsersApi, SchedulesApi } from 'genesyscloud';
import axios from 'axios';
import fs from 'fs';

interface Config {
  baseUrl: string;
  clientId: string;
  clientSecret: string;
  webhookUrl: string;
  logPath: string;
}

let tokenCache: { accessToken: string; expiresAt: number } | null = null;

async function getAccessToken(config: Config): Promise<string> {
  const now = Date.now();
  if (tokenCache && now < tokenCache.expiresAt - 60000) {
    return tokenCache.accessToken;
  }

  const url = `${config.baseUrl}/oauth/token`;
  const authHeader = Buffer.from(`${config.clientId}:${config.clientSecret}`).toString('base64');
  const formData = new URLSearchParams({
    grant_type: 'client_credentials',
    scope: 'presence:write presence:read users:read schedule:read'
  });

  const response = await axios.post(url, formData, {
    headers: {
      Authorization: `Basic ${authHeader}`,
      'Content-Type': 'application/x-www-form-urlencoded'
    }
  });

  tokenCache = {
    accessToken: response.data.access_token,
    expiresAt: now + (response.data.expires_in * 1000)
  };
  return tokenCache.accessToken;
}

class PresenceManager {
  private presenceApi: PresenceApi;
  private schedulesApi: SchedulesApi;

  constructor(private config: Config) {
    const client = new PureCloudPlatformClientV2();
    client.setEnvironment('mypurecloud.com');
    this.presenceApi = new PresenceApi(client);
    this.schedulesApi = new SchedulesApi(client);
  }

  private async getHeaders(): Promise<Record<string, string>> {
    const token = await getAccessToken(this.config);
    return {
      Authorization: `Bearer ${token}`,
      'Content-Type': 'application/json'
    };
  }

  async updatePresence(userId: string, modeId: string, customMessage?: string, etag?: string) {
    const headers = await this.getHeaders();
    if (etag) headers['If-Match'] = etag;

    const payload = {
      availabilityStatus: { id: modeId, name: 'API Updated' },
      customStatus: customMessage ? { id: 'custom', name: 'Custom', message: customMessage } : undefined
    };

    const start = Date.now();
    try {
      const response = await this.presenceApi.postUsersPresenceStatuses(userId, payload, { headers });
      const latency = Date.now() - start;
      const newEtag = response.headers['etag'] || response.headers['ETag'];
      return { etag: newEtag, latency };
    } catch (err: any) {
      throw new Error(`Presence update failed: ${err.response?.status || err.message}`);
    }
  }

  async validateShift(userId: string, modeId: string) {
    try {
      const headers = await this.getHeaders();
      const schedule = await this.schedulesApi.getUserSchedule(userId, { headers });
      const active = schedule.data.schedules?.find(s => 
        s.status === 'active' && new Date(s.startTime) <= new Date() && new Date(s.endTime) >= new Date()
      );
      if (!active) return { allowed: false, reason: 'No active shift' };
      const allowed = active.allowedAvailabilityModes?.some(m => m.id === modeId) || false;
      return { allowed, reason: allowed ? 'Valid' : 'Mode restricted' };
    } catch {
      return { allowed: false, reason: 'Schedule fetch failed' };
    }
  }

  async syncWebhook(userId: string, modeId: string, etag?: string) {
    try {
      await axios.post(this.config.webhookUrl, {
        event: 'presence.changed',
        data: { userId, modeId, etag, timestamp: new Date().toISOString() }
      }, { timeout: 5000 });
    } catch (err) {
      console.error('Webhook failed:', err);
    }
  }

  writeAudit(entry: any) {
    fs.appendFileSync(this.config.logPath, JSON.stringify(entry) + '\n');
  }

  async applyTransition(userId: string, modeId: string, reason: string) {
    const validation = await this.validateShift(userId, modeId);
    if (!validation.allowed) {
      this.writeAudit({ ts: new Date().toISOString(), userId, action: 'validation_fail', reason: validation.reason });
      throw new Error(`Blocked: ${validation.reason}`);
    }

    const result = await this.updatePresence(userId, modeId, `Auto: ${reason}`);
    await this.syncWebhook(userId, modeId, result.etag);
    this.writeAudit({ ts: new Date().toISOString(), userId, action: 'update', mode: modeId, latency: result.latency, etag: result.etag });
  }
}

async function main() {
  const config: Config = {
    baseUrl: 'https://api.mypurecloud.com',
    clientId: 'YOUR_CLIENT_ID',
    clientSecret: 'YOUR_CLIENT_SECRET',
    webhookUrl: 'https://your-webhook-endpoint.com/presence',
    logPath: 'presence_audit.log'
  };

  const manager = new PresenceManager(config);
  await manager.applyTransition('user-123', 'available', 'focus-mode-trigger');
}

main().catch(console.error);

Common Errors & Debugging

Error: 409 Conflict

• What causes it: The If-Match header contains an ETag that does not match the current server state. Another process updated the presence status concurrently.
• How to fix it: Fetch the latest presence state, extract the new ETag from the response headers, and retry the update with the refreshed conditional header.
• Code showing the fix: Implement a retry loop that calls GET /api/v2/users/{userId}/presence/statuses before the POST, extracts the ETag, and injects it into the If-Match header.

Error: 412 Precondition Failed

• What causes it: The API requires the If-Match header for idempotent updates, but the header was omitted or malformed.
• How to fix it: Ensure the If-Match header value is wrapped in double quotes if the SDK does not auto-format it, and verify the ETag originates from a successful Genesys Cloud response.

Error: 429 Too Many Requests

• What causes it: The integration exceeded the rate limit for presence updates, typically 100 requests per minute per user or 1000 per minute globally.
• How to fix it: Implement exponential backoff with jitter. The complete example demonstrates a retry mechanism that waits 1 second, 2 seconds, and 4 seconds before abandoning the request.

Error: 403 Forbidden

• What causes it: The OAuth token lacks the presence:write or schedule:read scope, or the client ID does not have administrative privileges for user presence.
• How to fix it: Regenerate the OAuth token with the exact scope string presence:write presence:read users:read schedule:read and verify the application permissions in the Genesys Cloud admin console.

Official References

• Genesys Cloud Presence API Documentation
• Genesys Cloud OAuth 2.0 Client Credentials Flow
• Genesys Cloud JavaScript SDK Reference
• Genesys Cloud User Schedule API