from pathlib import Path
import shutil
import logging
import subprocess
from datetime import datetime

def read_config(config_file: str) -> str:
    with open(config_file, 'r') as file:
        return file.read()

def write_config(config_file: str, content: str) -> None:
    with open(config_file, 'w') as file:
        file.write(content)

def create_backup(config_file: str) -> str:
    config_path = Path(config_file)
    backup_dir = config_path.parent / "backups"
    backup_dir.mkdir(exist_ok=True)
    
    timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
    backup_file = backup_dir / f"{config_path.stem}_{timestamp}.conf"
    shutil.copy2(config_file, backup_file)
    logging.info(f"Backup created: {backup_file}")
    return backup_file

def reload_wireguard_service(config_file: str):
    interface = Path(config_file).stem
    try:
        subprocess.run(["wg-quick", "down", interface], check=True)
        subprocess.run(["wg-quick", "up", interface], check=True)
        logging.info(f"WireGuard service for interface {interface} restarted successfully")
        return True
    except subprocess.CalledProcessError as e:
        logging.error(f"Failed to reload WireGuard service: {str(e)}")
        return False