import os
import re

class ConfigValueParser:
    ENV_PATTERN = re.compile(r'\${{\s*env\.([a-zA-Z_][a-zA-Z0-9_]*)\s*}}')

    @classmethod
    def parse_value(cls, value: str) -> str:
        """
        Parses a given string value and resolves any dynamic references.
        Currently supports environment variable references in the format ${{ env.VAR_NAME }}.
        """
        if not value:
            return ''
        # Environment Variable Resolution
        def replace_env(match):
            env_var = match.group(1)
            return os.environ.get(env_var, '')

        return cls.ENV_PATTERN.sub(replace_env, value)
