Upload hf_app.py

hf_app.py

@@ -0,0 +1,143 @@
+#!/usr/bin/env python3
+# hf_app.py - Hugging Face Spaces optimized entry point
+
+import os
+import sys
+import signal
+import threading
+import time
+from pathlib import Path
+
+# Add current directory to Python path
+sys.path.insert(0, str(Path(__file__).parent))
+
+# Import the main Flask app
+from app import app
+from database import init_db
+
+def setup_huggingface_environment():
+    """Setup environment variables for Hugging Face Spaces"""
+    
+    # Set default configurations for HF Spaces
+    os.environ.setdefault('FLASK_ENV', 'production')
+    os.environ.setdefault('HOST', '0.0.0.0')
+    os.environ.setdefault('PORT', '7860')
+    
+    # Ensure data directory exists
+    data_dir = Path(__file__).parent / 'data'
+    data_dir.mkdir(exist_ok=True)
+    
+    print("🚀 English Helper - Hugging Face Spaces Setup")
+    print("=" * 50)
+    
+    # Check required environment variables
+    required_vars = ['GROQ_API_KEY', 'GEMINI_API_KEY']
+    optional_vars = ['SMTP_SERVER', 'ADMIN_USERNAME', 'SECRET_KEY']
+    
+    print("🔑 Checking API Keys:")
+    for var in required_vars:
+        if os.environ.get(var):
+            print(f"  ✅ {var}: Configured")
+        else:
+            print(f"  ❌ {var}: Missing (required for full functionality)")
+    
+    print("\n📧 Checking Optional Configuration:")
+    for var in optional_vars:
+        if os.environ.get(var):
+            print(f"  ✅ {var}: Configured")
+        else:
+            print(f"  ⚠️  {var}: Not configured (optional)")
+    
+    # Generate secret key if not provided
+    if not os.environ.get('SECRET_KEY'):
+        import secrets
+        secret_key = secrets.token_urlsafe(32)
+        os.environ['SECRET_KEY'] = secret_key
+        print(f"  🔐 Generated temporary SECRET_KEY")
+    
+    print("=" * 50)
+
+def initialize_database():
+    """Initialize database with error handling"""
+    try:
+        print("🗄️  Initializing database...")
+        init_db()
+        print("✅ Database initialized successfully")
+        return True
+    except Exception as e:
+        print(f"❌ Database initialization failed: {e}")
+        return False
+
+def health_check():
+    """Simple health check endpoint"""
+    @app.route('/health')
+    def health():
+        return {'status': 'healthy', 'app': 'English Helper'}, 200
+
+def setup_signal_handlers():
+    """Setup graceful shutdown handlers"""
+    def signal_handler(signum, frame):
+        print(f"\n🛑 Received signal {signum}, shutting down gracefully...")
+        sys.exit(0)
+    
+    signal.signal(signal.SIGINT, signal_handler)
+    signal.signal(signal.SIGTERM, signal_handler)
+
+def run_flask_app():
+    """Run the Flask application"""
+    host = os.environ.get('HOST', '0.0.0.0')
+    port = int(os.environ.get('PORT', 7860))
+    debug = os.environ.get('FLASK_DEBUG', 'false').lower() == 'true'
+    
+    print(f"🌐 Starting server on http://{host}:{port}")
+    print(f"🎯 Debug mode: {'ON' if debug else 'OFF'}")
+    print(f"📱 Access your app at: http://{host}:{port}")
+    print(f"🔐 Admin panel at: http://{host}:{port}/admin")
+    print("\n" + "=" * 50)
+    
+    try:
+        app.run(
+            host=host,
+            port=port,
+            debug=debug,
+            threaded=True,
+            use_reloader=False  # Disable reloader in production
+        )
+    except Exception as e:
+        print(f"❌ Failed to start server: {e}")
+        return False
+    
+    return True
+
+def main():
+    """Main entry point for Hugging Face Spaces"""
+    try:
+        # Setup environment
+        setup_huggingface_environment()
+        
+        # Setup signal handlers
+        setup_signal_handlers()
+        
+        # Add health check
+        health_check()
+        
+        # Initialize database
+        if not initialize_database():
+            print("⚠️  Database initialization failed, but continuing...")
+        
+        print("🎓 English Helper is ready!")
+        print("✨ Enjoy learning English with AI assistance!")
+        print("=" * 50)
+        
+        # Run the Flask app
+        return run_flask_app()
+        
+    except KeyboardInterrupt:
+        print("\n👋 Goodbye! Thanks for using English Helper!")
+    except Exception as e:
+        print(f"❌ Fatal error: {e}")
+        return False
+
+if __name__ == "__main__":
+    success = main()
+    sys.exit(0 if success else 1)