#!/usr/bin/env python3
import http.server
import socketserver
import socket
import threading
import webbrowser
from datetime import datetime

def get_local_ip():
    """Get the local IPv4 address"""
    try:
        with socket.socket(socket.AF_INET, socket.SOCK_DGRAM) as s:
            s.connect(("8.8.8.8", 80))
            local_ip = s.getsockname()[0]
        return local_ip
    except Exception:
        return "127.0.0.1"

def start_server(port=8000):
    """Start HTTP server on specified port"""
    local_ip = get_local_ip()
    
    print(f"Starting HTTP server...")
    print(f"Local IPv4 address: {local_ip}")
    print(f"Server running on:")
    print(f"  Local:   http://localhost:{port}")
    print(f"  Network: http://{local_ip}:{port}")
    print(f"Started at: {datetime.now().strftime('%Y-%m-%d %H:%M:%S')}")
    print(f"\nPress Ctrl+C to stop the server")
    print("-" * 50)
    
    class CustomHandler(http.server.SimpleHTTPRequestHandler):
        def log_message(self, format, *args):
            print(f"[{datetime.now().strftime('%H:%M:%S')}] {format % args}")
    
    try:
        with socketserver.TCPServer(("", port), CustomHandler) as httpd:
            threading.Timer(1.0, lambda: webbrowser.open(f"http://localhost:{port}")).start()
            
            httpd.serve_forever()
    except KeyboardInterrupt:
        print(f"\n\nServer stopped at: {datetime.now().strftime('%Y-%m-%d %H:%M:%S')}")
    except OSError as e:
        if "Address already in use" in str(e):
            print(f"Error: Port {port} is already in use. Try a different port.")
        else:
            print(f"Error starting server: {e}")

if __name__ == "__main__":
    import sys
    port = 8000
    if len(sys.argv) > 1:
        try:
            port = int(sys.argv[1])
            if port < 1 or port > 65535:
                raise ValueError("Port must be between 1 and 65535")
        except ValueError as e:
            print(f"Invalid port: {e}")
            print("Usage: python script.py [port]")
            sys.exit(1)
    
    start_server(port)