Update websocket_handler.py

websocket_handler.py

@@ -270,17 +270,55 @@ async def websocket_endpoint(websocket: WebSocket, session_id: str):
     # Initialize STT
     stt_initialized = await realtime_session.initialize_stt()
     if not stt_initialized:
-        # STT başarısız oldu, kullanıcıya bildir ve bağlantıyı kapat
         await websocket.send_json({
             "type": "error",
             "message": "Speech-to-Text service initialization failed. Please check your configuration.",
             "error_type": "stt_init_failed"
         })
-        
-        # Cleanup ve close
         await realtime_session.cleanup()
         await websocket.close()
         return
+    
+    # Send welcome message if exists
+    if session.chat_history and len(session.chat_history) > 0:
+        first_message = session.chat_history[0]
+        if first_message.get('role') == 'assistant':
+            # Send welcome message
+            await websocket.send_json({
+                "type": "assistant_response",
+                "text": first_message.get('content', ''),
+                "is_welcome": True
+            })
+            
+            # Generate TTS for welcome message
+            tts_provider = TTSFactory.create_provider()
+            if tts_provider:
+                try:
+                    welcome_text = first_message.get('content', '')
+                    audio_data = await tts_provider.synthesize(welcome_text)
+                    
+                    # Send audio in chunks
+                    chunk_size = realtime_session.audio_chunk_size
+                    total_chunks = (len(audio_data) + chunk_size - 1) // chunk_size
+                    
+                    for i in range(0, len(audio_data), chunk_size):
+                        chunk = audio_data[i:i + chunk_size]
+                        chunk_index = i // chunk_size
+                        
+                        await websocket.send_json({
+                            "type": "tts_audio",
+                            "data": base64.b64encode(chunk).decode('utf-8'),
+                            "chunk_index": chunk_index,
+                            "total_chunks": total_chunks,
+                            "is_last": chunk_index == total_chunks - 1,
+                            "is_welcome": True
+                        })
+                        
+                        await asyncio.sleep(0.01)
+                    
+                    log_info(f"✅ Welcome message TTS sent", session_id=session_id)
+                except Exception as e:
+                    log_error(f"Failed to generate welcome TTS", error=str(e))
 
     # STT başarılı, devam et
     try: