Update app.py

app.py

@@ -634,30 +634,38 @@ def apply_glossary_tooltips(text):
     html_output = f'<div style="padding: 10px; line-height: 1.5; font-size: 14px;">{text}</div>'
 
     return html_output
-def synthesize_audio(text, language):
-    if not TTS_SUPPORT or not text:
+def synthesize_audio(text, language, max_chars=200):
+    if not TTS_SUPPORT or not text.strip():
         return None
-    
+
     try:
-        # Map language name to code (e.g., "English" → "en")
-        lang_code = language.lower()[:2]  # Simple fallback
-        lang_map = {"english": "en", "spanish": "es", "french": "fr"}  # Expand as needed
-        lang_code = lang_map.get(language.lower(), lang_code)
+        # Map language to code (e.g., "English" → "en")
+        lang_code = {"english": "en", "spanish": "es"}.get(language.lower(), "en")
         
-        # Shorten text for gTTS limit
-        audio_text = f"Security alert: {text[:100]}..." if len(text) > 100 else text
+        # Split text into chunks
+        chunks = [text[i:i+max_chars] for i in range(0, len(text), max_chars)]
+        audio_files = []
+
+        for i, chunk in enumerate(chunks):
+            tts = gTTS(text=chunk, lang=lang_code, slow=False)
+            with tempfile.NamedTemporaryFile(suffix=f"_{i}.mp3", delete=False) as tmp_file:
+                tts.save(tmp_file.name)
+                audio_files.append(tmp_file.name)
+
+        # Combine all chunks into one file (requires ffmpeg)
+        combined_path = tempfile.NamedTemporaryFile(suffix="_combined.mp3", delete=False).name
+        os.system(f"ffmpeg -i 'concat:{'|'.join(audio_files)}' -acodec copy {combined_path}")
         
-        tts = gTTS(text=audio_text, lang=lang_code, slow=False)
-        
-        with tempfile.NamedTemporaryFile(suffix=".mp3", delete=False) as tmp_file:
-            tts.save(tmp_file.name)
-            return tmp_file.name  # Return full path
-            
+        # Clean up individual files
+        for file in audio_files:
+            os.unlink(file)
+
+        return combined_path
+
     except Exception as e:
-        print(f"⚠️ Audio synthesis failed: {e}")
+        print(f"❌ TTS Error: {e}")
         return None
 
-
 def new_chat():
     """Reset all fields for a new chat session"""
     return (