#!/usr/bin/env python3
"""Interactive Adventure Generator.

An AI-powered storytelling application that creates dynamic, interactive 
narratives where user choices directly influence story progression and 
outcomes.

Supports both Google Gemini (with API key) and local models.
"""

import os
import sys
import argparse
import warnings
from pathlib import Path

PROJECT_ROOT = Path(__file__).parent
sys.path.insert(0, str(PROJECT_ROOT))

warnings.filterwarnings('ignore')


def load_environment():
    """Load environment variables from .env file if present."""
    try:
        from dotenv import load_dotenv
        env_path = PROJECT_ROOT / '.env'
        if env_path.exists():
            load_dotenv(env_path)
            print(f"Loaded environment from: {env_path}")
    except ImportError:
        pass


def validate_environment():
    """Validate environment and display configuration info."""
    from config.settings import settings
    from utils.helpers import get_model_info
    
    try:
        settings.validate()
        print("✓ Configuration validated successfully")
    except Exception as e:
        print(f"⚠ Configuration warning: {e}")
    
    model_info = get_model_info()
    print(f"Model: {model_info['name']} ({model_info['provider']})")
    print(f"Type: {'Local' if model_info['type'] == 'local' else 'Remote'}")
    
    if model_info['requires_api_key'] and not settings.google_api_key:
        print("⚠ No Google API key found - will use local model")


def main():
    """Main application entry point."""
    parser = argparse.ArgumentParser(
        description="Interactive Adventure Generator",
        formatter_class=argparse.RawDescriptionHelpFormatter,
        epilog="""
Environment Variables:
  GOOGLE_API_KEY       Google API key (optional - uses local if not set)
  DEFAULT_LANGUAGE     Default language (English or Español)
  DEFAULT_TEMPERATURE  Default model temperature (0.0-2.0)
  LOCAL_MODEL_NAME     Local model (default: SmolLM2-135M-Instruct)
  GRADIO_PORT          Server port (default: 7860)
  GRADIO_HOST          Server host (default: 0.0.0.0)

Examples:
  python app.py                    # Start with default settings
  python app.py --share           # Start with public sharing
  python app.py --port 8080       # Start on custom port
  
For Docker:
  docker run -p 7860:7860 interactive-adventure
        """
    )
    
    parser.add_argument(
        '--port', '-p',
        type=int,
        default=None,
        help='Server port (overrides GRADIO_PORT)'
    )
    
    parser.add_argument(
        '--host',
        type=str,
        default=None,
        help='Server host (overrides GRADIO_HOST)'
    )
    
    parser.add_argument(
        '--share', '-s',
        action='store_true',
        help='Create public sharing link'
    )
    
    parser.add_argument(
        '--debug',
        action='store_true',
        help='Enable debug mode'
    )

    args = parser.parse_args()
    
    # Load environment variables
    load_environment()
    
    # Import settings after environment is loaded
    from config.settings import settings
    
    # Override settings with command line arguments
    if args.port:
        settings.gradio_port = args.port
    if args.host:
        settings.gradio_host = args.host
    
    if args.debug:
        warnings.filterwarnings('default')
        print("Debug mode enabled")

    print("🎭 Interactive Adventure Generator")
    print("=" * 50)
    
    # Import remaining modules
    from ui.interface import GradioInterface
    from utils.helpers import setup_environment
    
    # Reload settings to pick up environment variables
    settings.reload()
    
    # Set up environment
    setup_environment()
    
    # Validate configuration
    validate_environment()
    
    print("=" * 50)
    print(f"Starting server on {settings.gradio_host}:{settings.gradio_port}")
    
    if settings.use_local_model:
        print("⚠ Note: Local model may take longer to load on first run")
    
    try:
        # Create and launch interface
        interface = GradioInterface()
        interface.launch(share=args.share)
        
    except KeyboardInterrupt:
        print("\n👋 Shutting down gracefully...")
        
    except Exception as e:
        print(f"❌ Failed to start application: {e}")
        if args.debug:
            raise
        sys.exit(1)
    
    finally:
        # Cleanup
        try:
            from utils.helpers import cleanup_temp_files
            cleanup_temp_files()
        except Exception:
            pass


if __name__ == "__main__":
    main()