import re
from django.core.exceptions import ValidationError


def validate_password_strength(value):
    conditions = [
        len(value) >= 8,                         # Minimum length 8
        re.search(r'[A-Z]', value),              # At least one uppercase letter
        re.search(r'[a-z]', value),              # At least one lowercase letter
        re.search(r'\d', value),                 # At least one digit
        re.search(r'[!@#$%^&*(),.?":{}|<>]', value)  # At least one special character
    ]
    
    if not all(conditions):
        raise ValidationError(
            "Password must contain at least 8 characters, including an uppercase letter, a lowercase letter, a digit, and a special character."
        )