Update app.py

app.py

@@ -5,6 +5,7 @@ import tempfile
 import logging
 import shutil
 import requests
+from huggingface_hub.utils import RepositoryNotFoundError
 
 # Configure logging
 logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(name)s - %(levelname)s - %(message)s')
@@ -16,18 +17,26 @@ if not hf_token:
     logger.warning("HF_TOKEN environment variable not set. Connections to private spaces will fail.")
     logger.warning("Please set the HF_TOKEN environment variable with your Hugging Face token.")
 
-# Create the client with explicit authentication - update this to your private space
+# Backend space name - update this to your private space
 BACKEND_SPACE = "skallewag/prepperoni-backend"
-client = Client(
-    BACKEND_SPACE,  # Your private Space name
-    hf_token=hf_token  # Your Hugging Face token
-)
 
-# Try to connect and list endpoints
+# Initialize client as None first
+client = None
+connection_error = None
+
+# Try to initialize the client
 try:
-    logger.info(f"Available endpoints: {client.endpoints}")
+    client = Client(
+        BACKEND_SPACE,
+        hf_token=hf_token
+    )
+    # Check available endpoints
+    endpoints = client.endpoints
+    logger.info(f"Successfully connected to backend. Available endpoints: {endpoints}")
 except Exception as e:
+    connection_error = str(e)
     logger.error(f"Error connecting to backend space '{BACKEND_SPACE}': {str(e)}")
+    logger.error("This might be due to a missing or invalid HF_TOKEN, or the backend space may be offline or private.")
 
 # Create a simple interface that forwards to your private Space
 with gr.Blocks(title="Prepperoni - Premiere Pro to XML Converter") as app:
@@ -35,6 +44,21 @@ with gr.Blocks(title="Prepperoni - Premiere Pro to XML Converter") as app:
     gr.Markdown("# Prepperoni 🍕")
     gr.Markdown("Convert Adobe Premiere Pro project files to XML format for use in other video editing software.")
     
+    # Display a warning if there's a connection error
+    if connection_error:
+        gr.Markdown(f"""
+        ⚠️ **Warning: Cannot connect to backend service**
+        
+        There was an error connecting to the processing backend. The app may not function correctly.
+        
+        Error details: {connection_error}
+        
+        If you're the administrator, please make sure:
+        1. The HF_TOKEN environment variable is set correctly in Space settings
+        2. The backend space name is correct (currently set to: {BACKEND_SPACE})
+        3. The backend space is running and accessible
+        """, elem_classes=["error-box"])
+    
     with gr.Row():
         with gr.Column(scale=1):
             # Input components
@@ -77,6 +101,9 @@ with gr.Blocks(title="Prepperoni - Premiere Pro to XML Converter") as app:
     # Function to process the file through the backend
     def process_file(file, sequence_name):
         try:
+            if not client:
+                return None, "Error: Cannot connect to backend service. Please check the connection error at the top of the page.", "Configuration Error"
+                
             if file is None:
                 return None, "Error: No file provided", "Please upload a Premiere Pro project file."
             
@@ -152,6 +179,17 @@ with gr.Blocks(title="Prepperoni - Premiere Pro to XML Converter") as app:
         outputs=[output_file, output_message, status]
     )
 
+# Add custom CSS for error box
+app.load(css="""
+.error-box {
+    background-color: #ffebe9;
+    border: 1px solid #e9484d;
+    padding: 16px;
+    border-radius: 8px;
+    margin-bottom: 20px;
+}
+""")
+
 # Launch the app
 if __name__ == "__main__":
     app.launch(show_error=True)