import subprocess
import re
import ipaddress
from flask import jsonify

def wakeonlan(mac):  

    # Validate MAC
    if not re.match(r'^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})$', mac):
        return jsonify({"success": False, "error": f"Invalid MAC: {mac}"}), 400

    try:
        result = subprocess.run(
            ["wakeonlan", mac],
            capture_output=True,
            text=True,
            check=True
        )
        return jsonify({"success": True, "message": "WOL packet sent", "output": result.stdout.strip()})
    except subprocess.CalledProcessError as e:
        return jsonify({"success": False, "error": "Failed to send WOL packet", "details": e.stderr.strip()}), 500

def traceroute(ip):
    """
    Executes a traceroute to the given IP address.

    Parameters:
        ip (str): The target IP address to trace.

    Returns:
        JSON response with:
            - success (bool)
            - output (str) if successful
            - error (str) and details (str) if failed
    """
    # --------------------------
    # Step 1: Validate IP address
    # --------------------------
    try:
        ipaddress.ip_address(ip)
    except ValueError:
        # Return 400 if IP is invalid
        return jsonify({"success": False, "error": f"Invalid IP: {ip}"}), 400

    # --------------------------
    # Step 2: Execute traceroute
    # --------------------------
    try:
        result = subprocess.run(
            ["traceroute", ip],       # Command and argument
            capture_output=True,      # Capture stdout/stderr
            text=True,                # Return output as string
            check=True                # Raise CalledProcessError on non-zero exit
        )
        # Return success response with traceroute output
        return jsonify({"success": True, "output": result.stdout.strip()})

    # --------------------------
    # Step 3: Handle command errors
    # --------------------------
    except subprocess.CalledProcessError as e:
        # Return 500 if traceroute fails
        return jsonify({
            "success": False,
            "error": "Traceroute failed",
            "details": e.stderr.strip()
        }), 500