import sys
import socket
import os
from http.server import SimpleHTTPRequestHandler
from socketserver import TCPServer
from rich.console import Console
from rich.panel import Panel
from rich.text import Text
import json
from datetime import datetime
import hashlib
import urllib.request
import re

console = Console()

def get_machine_ip():
    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    try:
        # doesn't have to be reachable
        s.connect(('8.8.8.8', 80))
        ip = s.getsockname()[0]
    except Exception:
        ip = '127.0.0.1'
    finally:
        s.close()
    return ip

def is_docker():
    # Check for .dockerenv file
    if os.path.exists('/.dockerenv'):
        return True
    # Check cgroup info for docker
    try:
        with open('/proc/1/cgroup', 'rt') as f:
            return 'docker' in f.read() or 'kubepods' in f.read()
    except Exception:
        return False

def get_host_ip():
    try:
        # Try resolving Docker internal host (works on Docker Desktop and configured Linux setups)
        host_ip = socket.gethostbyname('host.docker.internal')
        return host_ip
    except socket.error:
        # Fallback if not resolved, may use default gateway IP (requires extra code) or local IP
        return 'Could not determine host IP'

def get_ipv4():
    if is_docker():
        ip = get_host_ip()
        if ip:
            print(f"Running inside Docker. Host IPv4: {ip}")
        else:
            print("Running inside Docker, but could not resolve host.docker.internal.")
    else:
        ip = get_machine_ip()
        print(f"Not in Docker. Machine IPv4: {ip}")
    return ip

PORT = 52721
IP = get_ipv4()

if len(sys.argv) > 1:
    try:
        PORT = int(sys.argv[1])
    except ValueError:
        console.print("[bold red]Usage:[/] python serve.py [port]", style="red")
        sys.exit(1)

console.print(Panel(Text("Simple Python HTTP Server", style="bold white on blue"),
                    subtitle="Press [bold yellow]Ctrl+C[/] to stop the server", expand=False))

console.print(
    f"[green]Server is running![/]\n"
    f"Listening on [bold magenta]http://{IP}:{PORT}[/]\n",
    style="bold",
)

try:
    with TCPServer(("0.0.0.0", PORT), SimpleHTTPRequestHandler) as httpd:
        httpd.serve_forever()
except KeyboardInterrupt:
    console.print("\n[bold red]Server stopped by user.[/]")
except OSError as e:
    console.print(f"[bold red]Error:[/] {e}")