Update app.py

app.py

@@ -23,7 +23,7 @@ AUDIO_DIR = os.path.join('static', 'audio')
 # Ensure the audio directory exists
 os.makedirs(AUDIO_DIR, exist_ok=True)
 
-# Flashcards data
+# Flashcards data with Chinese sentences and Japanese translations
 flashcards = {
     'A': {
         'chinese_sentences': list(translation_dict_A.keys()),
@@ -51,31 +51,58 @@ flashcards = {
     }
 }
 
-# Helper function to generate audio
 def generate_audio(text, set_name, index):
-    """Generate an audio file from text using gTTS."""
+    """
+    Generate an audio file from Japanese text using gTTS.
+    
+    Args:
+        text (str): The Japanese text to convert to speech.
+        set_name (str): The flashcard set identifier.
+        index (int): The index of the flashcard within the set.
+    
+    Returns:
+        str: The file path to the generated audio.
+    """
     filename = f"{set_name}_{index}.mp3"
     filepath = os.path.join(AUDIO_DIR, filename)
     
     if not os.path.exists(filepath):
         logging.info(f"Generating audio file: {filepath}")
-        tts = gTTS(text=text, lang='zh-cn')  # Set language to Chinese
-        tts.save(filepath)
+        try:
+            tts = gTTS(text=text, lang='ja')  # Set language to Japanese
+            tts.save(filepath)
+        except Exception as e:
+            logging.error(f"Error generating audio: {e}")
+            return None
     else:
         logging.info(f"Using existing audio file: {filepath}")
     
     return filepath
 
-# Route for the portal page
 @app.route('/')
 def portal():
+    """
+    Render the portal page.
+    """
     return render_template('portal.html')
 
-# Route to render the flashcards page
 @app.route('/flashcards')
 def flashcards_page():
+    """
+    Render the flashcards page for a specific set and index.
+    
+    Query Parameters:
+        set (str): The flashcard set identifier (default: 'A').
+        index (int): The index of the flashcard within the set (default: 0).
+    
+    Returns:
+        Rendered HTML template or error message.
+    """
     set_name = request.args.get('set', 'A')
-    index = int(request.args.get('index', 0))
+    try:
+        index = int(request.args.get('index', 0))
+    except ValueError:
+        return "Invalid index parameter", 400
     
     if set_name not in flashcards:
         return "Set not found", 404
@@ -84,21 +111,37 @@ def flashcards_page():
     if not (0 <= index < total):
         return "Index out of range", 404
     
+    chinese = flashcards[set_name]['chinese_sentences'][index]
+    japanese = flashcards[set_name]['japanese_translations'][index]
+    audio_url = url_for('static', filename=f"audio/{set_name}_{index}.mp3")
+    
     return render_template(
         'flashcards.html',
         set_name=set_name,
         index=index,
         total=total,
-        chinese=flashcards[set_name]['chinese_sentences'][index],
-        japanese=flashcards[set_name]['japanese_translations'][index],
-        audio_url=url_for('static', filename=f"audio/{set_name}_{index}.mp3")
+        chinese=chinese,
+        japanese=japanese,
+        audio_url=audio_url
     )
 
-# API endpoint to fetch flashcard data
 @app.route('/api/flashcards')
 def api_flashcards():
+    """
+    API endpoint to fetch flashcard data.
+    
+    Query Parameters:
+        set (str): The flashcard set identifier (default: 'A').
+        index (int): The index of the flashcard within the set (default: 0).
+    
+    Returns:
+        JSON response containing flashcard data or error message.
+    """
     set_name = request.args.get('set', 'A')
-    index = int(request.args.get('index', 0))
+    try:
+        index = int(request.args.get('index', 0))
+    except ValueError:
+        return jsonify({'error': 'Invalid index parameter'}), 400
 
     if set_name in flashcards:
         chinese_sentences = flashcards[set_name]['chinese_sentences']
@@ -109,9 +152,12 @@ def api_flashcards():
             chinese = chinese_sentences[index]
             japanese = japanese_translations[index]
             
-            # Generate audio and get the URL
-            audio_path = generate_audio(chinese, set_name, index)
-            audio_url = url_for('static', filename=f"audio/{set_name}_{index}.mp3")
+            # Generate audio from Japanese text
+            audio_path = generate_audio(japanese, set_name, index)
+            if audio_path:
+                audio_url = url_for('static', filename=f"audio/{set_name}_{index}.mp3")
+            else:
+                audio_url = None  # Handle audio generation failure
             
             return jsonify({
                 'set_name': set_name,
@@ -127,4 +173,5 @@ def api_flashcards():
         return jsonify({'error': 'Set not found'}), 404
 
 if __name__ == '__main__':
+    # Run the Flask app on all available IPs on port 7860
     app.run(debug=True, host="0.0.0.0", port=7860)