#!/usr/bin/env python3

"""
GUI Launcher for LLM Business Chatbot

This script launches the Gradio web interface for the chatbot application.
It provides a web-based GUI that wraps around the existing CLI chatbot
without modifying any of the original code.

Usage:
    python run_gui.py                    # Launch with default settings
    python run_gui.py --port 8080        # Launch on custom port
    python run_gui.py --share            # Create public sharing link
    python run_gui.py --debug            # Enable debug mode
"""

import spacy
import subprocess
import importlib.util

def is_model_installed(model_name):
    return importlib.util.find_spec(model_name) is not None

model = "en_core_web_sm"

if not is_model_installed(model):
    subprocess.run(["python", "-m", "spacy", "download", model])
    
import sys
import os
import argparse
from pathlib import Path

# Add gui directory to path
gui_dir = Path(__file__).parent / "gui"
sys.path.append(str(gui_dir))

def main():
    """Main function to parse arguments and launch the GUI."""
    parser = argparse.ArgumentParser(
        description="Launch Gradio GUI for LLM Business Chatbot",
        formatter_class=argparse.RawDescriptionHelpFormatter,
        epilog="""
Examples:
    python run_gui.py                    # Default: localhost:7860
    python run_gui.py --port 8080        # Custom port
    python run_gui.py --share            # Public sharing link
    python run_gui.py --host 0.0.0.0     # Accept external connections
    python run_gui.py --debug            # Enable debug mode
        """
    )
    
    parser.add_argument(
        "--host",
        default="0.0.0.0",
        help="Host address to bind to (default: 0.0.0.0)"
    )
    
    parser.add_argument(
        "--port",
        type=int,
        default=7860,
        help="Port number to run the server on (default: 7860)"
    )
    
    parser.add_argument(
        "--share",
        action="store_true",
        help="Create a public sharing link via Gradio"
    )
    
    parser.add_argument(
        "--debug",
        action="store_true",
        help="Enable debug mode"
    )
    
    parser.add_argument(
        "--quiet",
        action="store_true",
        help="Suppress startup messages"
    )
    
    args = parser.parse_args()
    
    # Print startup banner
    if not args.quiet:
        print("=" * 70)
        print("🤖 LLM Business Chatbot - Gradio GUI")
        print("=" * 70)
        print(f"🌐 Starting web interface...")
        print(f"📍 Host: {args.host}")
        print(f"🔌 Port: {args.port}")
        print(f"🔗 Share: {'Yes' if args.share else 'No'}")
        print(f"🐛 Debug: {'Yes' if args.debug else 'No'}")
        print("-" * 70)
    
    try:
        # Import and launch the Gradio interface
        from gradio_interface import GradioInterface
        
        gui = GradioInterface()
        gui.launch(
            server_name=args.host,
            server_port=args.port,
            share=args.share,
            debug=args.debug,
            quiet=args.quiet,
            show_error=True
        )
        
    except ImportError as e:
        print(f"❌ Error: Missing dependencies. Please install requirements:")
        print(f"   pip install -r requirements.txt")
        print(f"   Error details: {e}")
        sys.exit(1)
        
    except KeyboardInterrupt:
        if not args.quiet:
            print("\n👋 Shutting down Gradio interface...")
        sys.exit(0)
        
    except Exception as e:
        print(f"❌ Error launching GUI: {e}")
        if args.debug:
            import traceback
            traceback.print_exc()
        sys.exit(1)

if __name__ == "__main__":
    main()