"""
Infrastructure - No-Op Cache (Fallback when Redis unavailable)
"""
from typing import Any, Optional

from app.domain.interfaces import ICache


class NoOpCache(ICache):
    """No-operation cache - does nothing (fallback)"""

    async def get(self, key: str) -> Optional[Any]:
        """Always return None (cache miss)"""
        return None

    async def set(self, key: str, value: Any, ttl: Optional[int] = None) -> bool:
        """Do nothing, return True"""
        return True

    async def delete(self, key: str) -> bool:
        """Do nothing, return True"""
        return True

    async def exists(self, key: str) -> bool:
        """Always return False"""
        return False

    async def clear(self) -> bool:
        """Do nothing, return True"""
        return True