Add debugging and improve startup: Enhanced environment variable logging, created run.py startup script, updated Dockerfile for better error handling

Dockerfile

@@ -16,5 +16,5 @@ EXPOSE 8000
 ENV PORT=8000
 ENV CORS_ORIGIN=*
 
-# Run the FastAPI application
-CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "8000"]
+# Run the FastAPI application using our startup script
+CMD ["python", "run.py"]

app.py

@@ -41,8 +41,13 @@ from dotenv import load_dotenv
 # For Hugging Face Spaces, environment variables are set in the Space settings
 try:
     load_dotenv('mongodb.env')
+    logger.info("✅ Loaded environment variables from mongodb.env")
 except:
-    pass  # Continue without .env file if not found
+    try:
+        load_dotenv('.env')
+        logger.info("✅ Loaded environment variables from .env")
+    except:
+        logger.info("ℹ️  No .env file found, using system environment variables")
 
 # Configure logging
 logging.basicConfig(
@@ -60,6 +65,16 @@ MONGODB_URI = os.getenv('MONGODB_URI', 'mongodb://localhost:27017/audit_checklis
 PORT = int(os.getenv('PORT', 8000))  # Hugging Face Spaces uses port 8000
 CORS_ORIGIN = os.getenv('CORS_ORIGIN', '*')  # Allow all origins by default for mobile apps
 
+# Debug logging for environment variables
+logger.info(f"MONGODB_URI: {'*' * 50 if MONGODB_URI.startswith('mongodb+srv://') else MONGODB_URI}")
+logger.info(f"PORT: {PORT}")
+logger.info(f"CORS_ORIGIN: {CORS_ORIGIN}")
+
+# Check if we're using the default MongoDB URI (which means env var is not set)
+if MONGODB_URI == 'mongodb://localhost:27017/audit_checklist':
+    logger.warning("⚠️  MONGODB_URI environment variable not set! Using default localhost connection.")
+    logger.warning("⚠️  Please set MONGODB_URI environment variable in Hugging Face Space settings.")
+
 # Initialize FastAPI application
 app = FastAPI(
     title="Audit Checklist API",

run.py

@@ -0,0 +1,53 @@
+#!/usr/bin/env python3
+"""
+Startup script for Hugging Face Spaces deployment
+"""
+import os
+import sys
+import logging
+
+# Set up logging
+logging.basicConfig(level=logging.INFO)
+logger = logging.getLogger(__name__)
+
+def main():
+    """Main startup function for HF Spaces"""
+    
+    # Log environment information
+    logger.info("🚀 Starting Audit Checklist API on Hugging Face Spaces")
+    logger.info(f"Python version: {sys.version}")
+    logger.info(f"Working directory: {os.getcwd()}")
+    
+    # Check environment variables
+    mongodb_uri = os.getenv('MONGODB_URI')
+    port = os.getenv('PORT', '8000')
+    
+    logger.info(f"PORT: {port}")
+    if mongodb_uri:
+        logger.info(f"MONGODB_URI: {'*' * 50}")
+    else:
+        logger.warning("⚠️  MONGODB_URI not found in environment variables!")
+        logger.warning("⚠️  Please set MONGODB_URI in your HF Space settings")
+        logger.warning("⚠️  Expected format: mongodb+srv://username:password@cluster.mongodb.net/database")
+    
+    # Import and run the FastAPI app
+    try:
+        import uvicorn
+        from app import app
+        
+        logger.info("✅ FastAPI app imported successfully")
+        logger.info(f"🌐 Starting server on port {port}")
+        
+        uvicorn.run(
+            app,
+            host="0.0.0.0",
+            port=int(port),
+            log_level="info"
+        )
+        
+    except Exception as e:
+        logger.error(f"❌ Failed to start application: {e}")
+        sys.exit(1)
+
+if __name__ == "__main__":
+    main()