from typing import Optional
import re
from pydantic import EmailStr, validator


def validate_email(email: str) -> bool:
    """Валидация email"""
    pattern = r'^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$'
    return bool(re.match(pattern, email))


def validate_password(password: str) -> tuple[bool, Optional[str]]:
    """Валидация пароля"""
    if len(password) < 8:
        return False, "Password must be at least 8 characters long"
    
    if not re.search(r'[A-Z]', password):
        return False, "Password must contain at least one uppercase letter"
    
    if not re.search(r'[a-z]', password):
        return False, "Password must contain at least one lowercase letter"
    
    if not re.search(r'\d', password):
        return False, "Password must contain at least one digit"
    
    return True, None