import os
import re
from pathlib import Path


def is_prod() -> bool:
    """判断当前环境是否为生产环境"""
    return os.getenv('ENV', 'test') == 'prod'


def get_root_dir() -> str:
    """获取项目根目录的绝对路径"""
    current_path = Path(__file__).resolve()
    root_path = current_path.parent if not current_path.is_dir() else current_path
    while True:
        if 'requirements.txt' in os.listdir(root_path):
            return str(root_path.absolute())
        root_path = root_path.parent


def get_abs_path(relative_path: str) -> str:
    """获取目标文件或目录的相对路径在系统中的绝对路径"""
    return os.path.join(get_root_dir(), relative_path)


def pascal_to_snake(pascal_str: str) -> str:
    """将Pascal字符串转为蛇形字符串"""
    snake_str = re.sub(r'([a-z])([A-Z])', r'\1_\2', pascal_str)
    return snake_str.lower()


def snake_to_pascal(snake_str: str) -> str:
    """将蛇形字符串转为Pascal字符串"""
    return ''.join([item.title() for item in snake_str.split('_')])