Create narration.py

genesis/narration.py

@@ -0,0 +1,40 @@
+# genesis/narration.py
+import os
+import requests
+from typing import Optional
+
+ELEVEN_LABS_API_KEY = os.getenv("ELEVEN_LABS_API_KEY")
+VOICE_ID = "EXAVITQu4vr4xnSDxMaL"  # Default voice; change in ElevenLabs dashboard if needed
+
+def narrate_text(text: str) -> Optional[str]:
+    """Convert text to speech using ElevenLabs API and return audio URL."""
+    if not ELEVEN_LABS_API_KEY:
+        print("[Narration] No ElevenLabs API key provided.")
+        return None
+
+    try:
+        url = f"https://api.elevenlabs.io/v1/text-to-speech/{VOICE_ID}"
+        headers = {
+            "xi-api-key": ELEVEN_LABS_API_KEY,
+            "Content-Type": "application/json"
+        }
+        payload = {
+            "text": text,
+            "voice_settings": {
+                "stability": 0.4,
+                "similarity_boost": 0.8
+            }
+        }
+        r = requests.post(url, headers=headers, json=payload, timeout=30)
+        r.raise_for_status()
+
+        # Save audio locally
+        audio_file = "narration.mp3"
+        with open(audio_file, "wb") as f:
+            f.write(r.content)
+
+        # In Spaces, you can serve local files directly
+        return audio_file
+    except Exception as e:
+        print(f"[Narration] Failed: {e}")
+        return None