# ssh_manager/config.py

import os
from pathlib import Path
from typing import Final
import subprocess

# Use Path for more efficient path handling
HOME: Final[Path] = Path.home()
SSH_DIR: Final[Path] = HOME / ".ssh"
CONF_DIR: Final[Path] = SSH_DIR / "conf"
SOCKET_DIR: Final[Path] = SSH_DIR / "s"
MAIN_CONFIG: Final[Path] = SSH_DIR / "config"

# Validate paths on import
for path in (SSH_DIR, CONF_DIR, SOCKET_DIR):
    if not path.exists():
        path.mkdir(mode=0o700, parents=True, exist_ok=True)

# Default SSH config content if ~/.ssh/config is missing
DEFAULT_CONFIG_CONTENT: Final[str] = """###
#Local ssh
###

Include conf/*/config

###
#Catch all ssh config
###

Host *
    UserKnownHostsFile /dev/null
    StrictHostKeyChecking no
    ServerAliveInterval 60
    ConnectTimeout 60
    AddKeysToAgent yes
    EscapeChar `
    ControlMaster auto
    ControlPersist 72000
    ControlPath ~/.ssh/s/%C  
"""

# Export string versions for backward compatibility
SSH_DIR_STR: Final[str] = str(SSH_DIR)
CONF_DIR_STR: Final[str] = str(CONF_DIR)
SOCKET_DIR_STR: Final[str] = str(SOCKET_DIR)
MAIN_CONFIG_STR: Final[str] = str(MAIN_CONFIG)

def validate_key_path(key_path: Path) -> bool:
    if not key_path.exists():
        return False
    if not key_path.is_dir():
        return False
    if not os.access(key_path, os.W_OK):
        return False
    return True

def update_config_with_key(key_path: Path) -> bool:
    if not validate_key_path(key_path):
        return False  # Early return if path validation fails

    try:
        subprocess.check_call([...])
    except subprocess.CalledProcessError as e:
        print_error(f"Error generating new SSH key: {e}")
        return False