#!/usr/bin/env python3
"""
Startup script for PDF Comparison Tool
"""

import os
import sys
import subprocess
import webbrowser
import time
from pathlib import Path

def check_python_version():
    """Check if Python version is compatible"""
    if sys.version_info < (3, 7):
        print("❌ Python 3.7 or higher is required")
        print(f"Current version: {sys.version}")
        return False
    print(f"✅ Python {sys.version.split()[0]} is compatible")
    return True

def check_dependencies():
    """Check if required dependencies are installed"""
    try:
        import flask
        import cv2
        import numpy
        import PIL
        import pytesseract
        import pdf2image
        import pyzbar
        import spellchecker
        import nltk
        import skimage
        print("✅ All Python dependencies are installed")
        return True
    except ImportError as e:
        print(f"❌ Missing dependency: {e}")
        print("Please run: pip install -r requirements.txt")
        return False

def check_tesseract():
    """Check if Tesseract OCR is installed"""
    try:
        import pytesseract
        pytesseract.get_tesseract_version()
        print("✅ Tesseract OCR is available")
        return True
    except Exception as e:
        print(f"❌ Tesseract OCR not found: {e}")
        print("Please install Tesseract:")
        print("  macOS: brew install tesseract")
        print("  Ubuntu: sudo apt-get install tesseract-ocr")
        print("  Windows: Download from https://github.com/UB-Mannheim/tesseract/wiki")
        return False

def create_directories():
    """Create necessary directories"""
    directories = ['uploads', 'results', 'static/results']
    for directory in directories:
        Path(directory).mkdir(parents=True, exist_ok=True)
    print("✅ Directories created")

def start_application():
    """Start the Flask application"""
    print("\n🚀 Starting PDF Comparison Tool...")
    print("📱 The application will be available at: http://localhost:5000")
    print("⏹️  Press Ctrl+C to stop the application")
    print("-" * 50)
    
    try:
        # Start the Flask app
        from app import app
        app.run(debug=True, host='0.0.0.0', port=5000)
    except KeyboardInterrupt:
        print("\n👋 Application stopped by user")
    except Exception as e:
        print(f"❌ Error starting application: {e}")
        return False
    
    return True

def main():
    """Main startup function"""
    print("=" * 50)
    print("📄 PDF Comparison Tool")
    print("=" * 50)
    
    # Check requirements
    if not check_python_version():
        sys.exit(1)
    
    if not check_dependencies():
        sys.exit(1)
    
    if not check_tesseract():
        sys.exit(1)
    
    # Create directories
    create_directories()
    
    # Ask user if they want to open browser
    try:
        response = input("\n🌐 Open browser automatically? (y/n): ").lower().strip()
        if response in ['y', 'yes']:
            # Wait a moment for the server to start
            def open_browser():
                time.sleep(2)
                webbrowser.open('http://localhost:5000')
            
            import threading
            browser_thread = threading.Thread(target=open_browser)
            browser_thread.daemon = True
            browser_thread.start()
    except KeyboardInterrupt:
        print("\n👋 Setup cancelled by user")
        sys.exit(0)
    
    # Start the application
    start_application()

if __name__ == "__main__":
    main()