Update app.py

app.py

@@ -2,26 +2,37 @@ from tts_voice import tts_order_voice
 import edge_tts
 import gradio as gr
 import tempfile
-# Keep anyio imported for use by edge_tts's internal dependencies
 import anyio 
 
 language_dict = tts_order_voice
 
-# Your core logic remains an async function, which is necessary for edge_tts
+# --- MODIFIED FUNCTION WITH INPUT VALIDATION ---
 async def text_to_speech_edge(text, language_code):
-    voice = language_dict[language_code]
-    communicate = edge_tts.Communicate(text, voice)
-    # Use a secure, temporary file path
-    with tempfile.NamedTemporaryFile(delete=False, suffix=".mp3") as tmp_file:
-        tmp_path = tmp_file.name
-
-    # The save operation is asynchronous, requiring the async function signature
-    await communicate.save(tmp_path) 
-
-    return "Speech synthesis complete: {}".format(text), tmp_path
-
-
-# --- Modern Gradio Component Syntax (Fixes AttributeError) ---
+    # 1. Input Validation
+    if not text or not text.strip():
+        # Return a warning message and None for the audio output
+        return "ERROR: Input text cannot be empty.", None
+
+    try:
+        voice = language_dict[language_code]
+        communicate = edge_tts.Communicate(text, voice)
+        
+        with tempfile.NamedTemporaryFile(delete=False, suffix=".mp3") as tmp_file:
+            tmp_path = tmp_file.name
+
+        await communicate.save(tmp_path) 
+
+        return "Speech synthesis complete: {}".format(text), tmp_path
+    
+    except edge_tts.exceptions.NoAudioReceived:
+        # Catch the specific error and return a friendly message
+        return "ERROR: Failed to generate audio. The TTS service may be unavailable or the voice code is invalid.", None
+    except Exception as e:
+        # Catch any other unexpected errors
+        return f"An unexpected error occurred: {str(e)}", None
+
+
+# --- Modern Gradio Component Syntax ---
 input_text = gr.Textbox(lines=5, label="Input Text") 
 output_text = gr.Textbox(label="Output Text") 
 output_audio = gr.Audio(type="filepath", label="Generated Audio File") 
@@ -33,7 +44,7 @@ language = gr.Dropdown(
 ) 
 
 
-# --- Gradio Interface Definition (Using English labels) ---
+# --- Gradio Interface Definition ---
 interface = gr.Interface(
     fn=text_to_speech_edge, 
     inputs=[input_text, language], 
@@ -43,8 +54,6 @@ interface = gr.Interface(
 )
 
 
-# --- Simplified Launch Command (The core fix for asynchronous apps) ---
+# --- Simplified Launch Command ---
 if __name__ == "__main__":
-    # Gradio will automatically detect the async function and manage the event loop.
-    # This is the most reliable way to launch on Hugging Face Spaces.
     interface.launch()