Lovable and Sinch integration: Step-by-Step Guide 2025

 

Adding the Sinch SDK Dependency

 

• Open your project’s main HTML file (typically named index.html).
• Before the closing </head> tag, add the following script tag to load the Sinch SDK from its CDN:

• 
  <script src="https://cdn.sinch.com/sdk/latest/sinch.min.js"></script>
      

• This makes the Sinch client library available on the global SinchClient object in your project.

 

Creating the Sinch Service File

 

• Create a new file in your project directory and name it sinchService.ts.
• This file will encapsulate all the code to initialize and use the Sinch client.
• Copy and paste the following TypeScript code into the file:

• 
  // sinchService.ts
  export class SinchService {
    private client: any;
  
    constructor() {
      this.initializeClient();
    }
    private initializeClient() {
      // Replace 'yourappkey' with your actual Sinch application key
      this.client = new SinchClient({
        applicationKey: 'yourappkey',
        capabilities: { calling: true, messaging: true },
        supportActiveConnection: true,
        // Additional configuration options can be added here
      });
  // Start the Sinch client and log the status
  this.client.start().then(() => {
    console.log("Sinch client started successfully");
  }).catch((error: any) => {
    console.error("Error starting Sinch client:", error);
  });
  
    }
    // Method to place a call to a given user
    public placeCall(calleeId: string) {
      if (!this.client) {
        console.error("Sinch client not initialized");
        return;
      }
      return this.client.callUser(calleeId).then((call: any) => {
        console.log("Call placed to", calleeId);
        return call;
      }).catch((error: any) => {
        console.error("Error placing call:", error);
      });
    }
  }
      

  
  


• This code creates a SinchService class which initializes the Sinch client with calling and messaging capabilities and provides a method to place calls.

 

Integrating the Sinch Service into Your Lovable Project

 

• In your main TypeScript file (for example, main.ts or index.ts), import the SinchService class.
• Add the following code snippet to initialize and use the service. Place it near the top of your main file after other imports:

• 
  import { SinchService } from './sinchService';
  
  // Initialize the Sinch service
  const sinchService = new SinchService();
  // Example: Wire up a button to place a call
  const callButton = document.getElementById('callButton');
  const calleeInput = document.getElementById('calleeInput') as HTMLInputElement;
  if (callButton && calleeInput) {
    callButton.addEventListener('click', () => {
      const calleeId = calleeInput.value;
      sinchService.placeCall(calleeId);
    });
  }
      

  
  


• This snippet imports the service, creates an instance, and attaches an event listener to a button (with ID callButton). When clicked, it reads the callee ID from an input field (with ID calleeInput) and uses the placeCall method to initiate a call.

 

Configuring Your Application Settings

 

• If your project uses a configuration file or a constants module, consider storing your Sinch application key there.
• For example, create or update a file called config.ts with the following content:

• 
  export const SINCH_CONFIG = {
    applicationKey: 'yourappkey' // Replace with your real application key
  };
      

• Then modify the sinchService.ts file to import this configuration:

• 
  import { SINCH_CONFIG } from './config';
  
  private initializeClient() {
    this.client = new SinchClient({
      applicationKey: SINCH_CONFIG.applicationKey,
      capabilities: { calling: true, messaging: true },
      supportActiveConnection: true,
    });
    // Start client as before...
  }
      

  
  

 

Finalizing and Testing the Integration

 

• Save all the changes to your project files.
• Since Lovable does not have a terminal for dependency management, including the Sinch SDK via the script tag in index.html ensures that the dependency is loaded at runtime.
• Test the integration by opening your project in a browser and using the interface (for example, by clicking the call button).
• Check the browser's console log for messages indicating that the Sinch client has started or for any error messages that need troubleshooting.