Fix 503 crash: Add TOS agreement and auto-download sample voice

app.py

@@ -1,6 +1,10 @@
 import gradio as gr
 from TTS.api import TTS
 import os
+import urllib.request
+
+# Agree to Coqui TOS
+os.environ["COQUI_TOS_AGREED"] = "1"
 
 # Initialize TTS (XTTS-v2)
 # This will download the model on the first run
@@ -18,6 +22,17 @@ tts = TTS("tts_models/multilingual/multi-dataset/xtts_v2", gpu=use_gpu)
 
 # Output folder
 os.makedirs("output", exist_ok=True)
+os.makedirs("voices", exist_ok=True)
+
+# Ensure at least one voice exists
+if not os.listdir("voices"):
+    print("No voices found. Downloading sample...")
+    try:
+        # Download a sample female voice
+        urllib.request.urlretrieve("https://huggingface.co/spaces/coqui/xtts/resolve/main/examples/female.wav", "voices/female_calm.wav")
+        print("Downloaded female_calm.wav")
+    except Exception as e:
+        print(f"Failed to download sample voice: {e}")
 
 def generate_speech(text, voice_id):
     """
@@ -31,20 +46,25 @@ def generate_speech(text, voice_id):
     speaker_wav = f"voices/{voice_id}.wav"
     
     if not os.path.exists(speaker_wav):
-        # Fallback to a default voice if specific one missing, or error out
-        # For now, let's list available voices to help debug
-        available = os.listdir("voices") if os.path.exists("voices") else []
-        return None, f"Error: Voice ID '{voice_id}' not found. Available: {available}"
+        # Fallback to the first available voice if specific one missing
+        available = os.listdir("voices")
+        if available:
+            print(f"Voice '{voice_id}' not found. Falling back to '{available[0]}'")
+            speaker_wav = f"voices/{available[0]}"
+        else:
+            return None, f"Error: Voice ID '{voice_id}' not found and no voices available."
 
     # Generate
-    tts.tts_to_file(
-        text=text,
-        file_path=output_path,
-        speaker_wav=speaker_wav,
-        language="en"
-    )
-    
-    return output_path, "Success"
+    try:
+        tts.tts_to_file(
+            text=text,
+            file_path=output_path,
+            speaker_wav=speaker_wav,
+            language="en"
+        )
+        return output_path, "Success"
+    except Exception as e:
+        return None, f"Error generating speech: {str(e)}"
 
 # Define Gradio Interface
 iface = gr.Interface(