#!/usr/bin/env python3
"""
Smart startup script for AI Dataset Studio
Automatically detects available features and chooses the best version to run
"""

import sys
import logging
import importlib
from typing import Dict, List, Tuple

# Configure logging
logging.basicConfig(
    level=logging.INFO,
    format='%(asctime)s - %(levelname)s - %(message)s'
)
logger = logging.getLogger(__name__)

def check_import(module_name: str, package_name: str = None) -> Tuple[bool, str]:
    """Check if a module can be imported"""
    try:
        importlib.import_module(module_name)
        return True, f"✅ {module_name}"
    except ImportError as e:
        return False, f"❌ {module_name}: {str(e)}"

def diagnose_system() -> Dict[str, bool]:
    """Diagnose system capabilities"""
    logger.info("🔍 Diagnosing system capabilities...")
    
    # Essential dependencies
    essential_deps = [
        ('gradio', 'gradio'),
        ('requests', 'requests'),
        ('bs4', 'beautifulsoup4'),
        ('pandas', 'pandas'),
        ('numpy', 'numpy')
    ]
    
    # Optional dependencies
    optional_deps = [
        ('transformers', 'transformers'),
        ('torch', 'torch'),
        ('datasets', 'datasets'),
        ('nltk', 'nltk'),
        ('sentence_transformers', 'sentence-transformers')
    ]
    
    results = {
        'essential_available': True,
        'ai_models_available': False,
        'nlp_available': False,
        'datasets_available': False,
        'missing_essential': [],
        'missing_optional': []
    }
    
    # Check essential dependencies
    logger.info("📋 Checking essential dependencies...")
    for module, package in essential_deps:
        available, msg = check_import(module, package)
        logger.info(f"  {msg}")
        if not available:
            results['essential_available'] = False
            results['missing_essential'].append(package)
    
    # Check optional dependencies
    logger.info("📋 Checking optional dependencies...")
    for module, package in optional_deps:
        available, msg = check_import(module, package)
        logger.info(f"  {msg}")
        if not available:
            results['missing_optional'].append(package)
        else:
            if module in ['transformers', 'torch']:
                results['ai_models_available'] = True
            elif module == 'nltk':
                results['nlp_available'] = True
            elif module == 'datasets':
                results['datasets_available'] = True
    
    return results

def test_gpu_availability() -> bool:
    """Test if GPU is available"""
    try:
        import torch
        gpu_available = torch.cuda.is_available()
        if gpu_available:
            gpu_name = torch.cuda.get_device_name(0)
            logger.info(f"🚀 GPU available: {gpu_name}")
        else:
            logger.info("💻 Using CPU (GPU not available)")
        return gpu_available
    except ImportError:
        logger.info("💻 Using CPU (PyTorch not available)")
        return False

def install_missing_packages(packages: List[str]) -> bool:
    """Attempt to install missing packages"""
    if not packages:
        return True
    
    logger.info(f"📦 Attempting to install missing packages: {', '.join(packages)}")
    
    try:
        import subprocess
        
        # Try to install packages
        cmd = [sys.executable, "-m", "pip", "install"] + packages
        result = subprocess.run(cmd, capture_output=True, text=True)
        
        if result.returncode == 0:
            logger.info("✅ Packages installed successfully!")
            return True
        else:
            logger.error(f"❌ Installation failed: {result.stderr}")
            return False
            
    except Exception as e:
        logger.error(f"❌ Installation error: {e}")
        return False

def run_full_version():
    """Run the full-featured version"""
    logger.info("🚀 Starting full AI Dataset Studio...")
    try:
        # Import and run the main app
        import app
        logger.info("✅ Full version loaded successfully")
    except Exception as e:
        logger.error(f"❌ Full version failed: {e}")
        raise

def run_minimal_version():
    """Run the minimal version"""
    logger.info("🚀 Starting minimal AI Dataset Studio...")
    try:
        # Import and run the minimal app
        import app_minimal
        logger.info("✅ Minimal version loaded successfully")
    except Exception as e:
        logger.error(f"❌ Minimal version failed: {e}")
        raise

def show_feature_summary(results: Dict[str, bool]):
    """Show a summary of available features"""
    logger.info("📊 Feature Summary:")
    
    if results['essential_available']:
        logger.info("  ✅ Core web scraping and data processing")
        logger.info("  ✅ CSV and JSON export")
        logger.info("  ✅ Quality filtering and text cleaning")
    
    if results['ai_models_available']:
        logger.info("  ✅ AI-powered sentiment analysis")
        logger.info("  ✅ Named entity recognition")
        logger.info("  ✅ Advanced content quality assessment")
    else:
        logger.info("  ⚠️ AI features disabled (install transformers + torch)")
    
    if results['nlp_available']:
        logger.info("  ✅ Advanced text processing with NLTK")
    else:
        logger.info("  ⚠️ Basic text processing only (install nltk)")
    
    if results['datasets_available']:
        logger.info("  ✅ HuggingFace Datasets export")
    else:
        logger.info("  ⚠️ Standard export only (install datasets)")

def main():
    """Main startup function"""
    print("🚀 AI Dataset Studio - Smart Startup")
    print("=" * 50)
    
    # Diagnose system
    results = diagnose_system()
    
    # Show feature summary
    show_feature_summary(results)
    
    # Check GPU
    gpu_available = test_gpu_availability()
    
    print("\n" + "=" * 50)
    
    # Decide which version to run
    if not results['essential_available']:
        logger.error("❌ Essential dependencies missing!")
        logger.error("💡 Please install required packages:")
        logger.error("   pip install gradio pandas requests beautifulsoup4")
        
        # Offer to install automatically
        user_input = input("\n🤔 Try to install missing packages automatically? (y/n): ")
        if user_input.lower() in ['y', 'yes']:
            if install_missing_packages(results['missing_essential']):
                logger.info("🔄 Restarting with new packages...")
                # Re-run diagnosis
                results = diagnose_system()
            else:
                logger.error("❌ Automatic installation failed")
                sys.exit(1)
        else:
            sys.exit(1)
    
    # Choose version based on capabilities
    if results['essential_available']:
        if results['ai_models_available']:
            logger.info("🎯 Running full-featured version with AI capabilities")
            try:
                run_full_version()
            except Exception as e:
                logger.error(f"❌ Full version failed, falling back to minimal: {e}")
                run_minimal_version()
        else:
            logger.info("🎯 Running minimal version (AI features not available)")
            run_minimal_version()
    else:
        logger.error("❌ Cannot start - essential dependencies missing")
        sys.exit(1)

if __name__ == "__main__":
    try:
        main()
    except KeyboardInterrupt:
        logger.info("\n👋 Startup cancelled by user")
        sys.exit(0)
    except Exception as e:
        logger.error(f"❌ Startup failed: {e}")
        logger.error("💡 Try running directly: python app_minimal.py")
        sys.exit(1)