import os
import subprocess
import time
from dotenv import load_dotenv
import sys
from multiprocessing import Pool
import logging

# Configure logging
logging.basicConfig(
    level=logging.INFO,
    format='%(asctime)s [INFO] root: %(message)s',
    datefmt='%Y-%m-%d %H:%M:%S'
)

# Load environment variables
load_dotenv()  # Load variables from .env file

# Credentials
IDRAC_USER, IDRAC_PASS = os.getenv("IDRAC_USER"), os.getenv("IDRAC_PASS")

# Load IP addresses from file
def load_ip_file(ip_file_path):
    if not os.path.isfile(ip_file_path):
        logging.error(f"IP file {ip_file_path} does not exist.")
        sys.exit(1)
    with open(ip_file_path, "r") as file:
        return [line.strip() for line in file if line.strip()]

# Power off the server for given iDRAC IP
def poweroff_idrac_server(idrac_ip):
    logging.info(f"Powering off server for iDRAC IP: {idrac_ip}")
    try:
        result = subprocess.run(
            ["racadm", "-r", idrac_ip, "-u", IDRAC_USER, "-p", IDRAC_PASS, "serveraction", "powerdown"],
            capture_output=True,
            text=True
        )
        if result.returncode == 0:
            logging.info(f"Successfully powered off server for {idrac_ip}")
        else:
            logging.error(f"Failed to power off server for {idrac_ip}: {result.stderr.strip()}")

    except Exception as e:
        logging.error(f"Exception occurred for {idrac_ip}: {e}")

# Main function
if __name__ == "__main__":
    if len(sys.argv) < 2:
        sys.exit("Usage: python script.py <ip_file>")
    
    ip_list = load_ip_file(sys.argv[1])
    start_time = time.time()
    
    # Execute in parallel using Pool (max 10 simultaneous processes)
    with Pool() as pool:
        pool.map(poweroff_idrac_server, ip_list)

    elapsed_time = time.time() - start_time
    logging.info(f"Server Power Off 완료. 완료 시간: {int(elapsed_time // 3600)} 시간, {int((elapsed_time % 3600) // 60)} 분, {int(elapsed_time % 60)} 초.")