Use Fishjam URL in the transcription demo (#191)

## Description

Allows to use FISHJAM_URL in the transcription demo

Author: czerwiukk

examples/transcription/src/environment.d.ts

@@ -2,6 +2,7 @@ declare global {
   namespace NodeJS {
     interface ProcessEnv {
       FISHJAM_ID?: string;
+      FISHJAM_URL?: string;
       FISHJAM_TOKEN?: string;
       GEMINI_API_KEY?: string;
     }

examples/transcription/src/index.ts

@@ -3,15 +3,16 @@ import { peerController } from './controllers/peers';
 import { FishjamService } from './service/fishjam';
 import { TranscriptionService } from './service/transcription';
 
-if (!process.env.FISHJAM_ID || !process.env.FISHJAM_TOKEN || !process.env.GEMINI_API_KEY) {
+if (!(process.env.FISHJAM_ID || process.env.FISHJAM_URL) || !process.env.FISHJAM_TOKEN || !process.env.GEMINI_API_KEY) {
   throw Error('Environment variables FISHJAM_ID, FISHJAM_TOKEN and GEMINI_API_KEY are required.');
 }
 
 const fishjamConfig = {
-  fishjamUrl: 'http://localhost:5002',
+  fishjamUrl: process.env.FISHJAM_URL,
   fishjamId: process.env.FISHJAM_ID,
   managementToken: process.env.FISHJAM_TOKEN,
 };
+
 const fishjam = new FishjamService(fishjamConfig);
 
 new TranscriptionService(fishjamConfig, process.env.GEMINI_API_KEY);

examples/transcription/src/service/transcription.ts

@@ -87,9 +87,8 @@ export class TranscriptionService {
   }
 
   async handleAgentDisconnected(message: PeerDisconnected) {
-    console.log(`Agent ${message.peerId} disconnected, removing room`);
+    console.log(`Agent ${message.peerId} disconnected`);
 
-    await this.fishjamClient.deleteRoom(message.roomId);
     this.agents.delete(message.roomId);
   }