"""Common aplication utilities."""
from functools import wraps
import hashlib
from pathlib import Path
from threading import Thread
from typing import Any
from typing import Callable
from uuid import uuid4


def str_uuid() -> str:
    """helper function to used by factory"""
    return str(uuid4())


def get_project_root() -> Path:
    """Return project root absolute path."""
    # [project_root] <= dbdeploy <= util <= common.py
    return Path(__file__).parent.parent.parent


def threadify(func: Callable[[Any], Any]) -> Callable[[Any], Any]:
    """Decorator to run a function as a thread."""
    @wraps(func)
    def wrapper(*args: Any, **kwargs: Any) -> Thread:
        t = Thread(target=func, args=args, kwargs=kwargs)
        t.start()
        return t
    return wrapper


def get_string_hash(input: str) -> str:
    """Return hash hex digest of a string."""
    return hashlib.sha256(str(input).encode()).hexdigest()