"""Redis-based APQ storage backend for FraiseQL."""

import logging
from typing import Any, Dict, Optional

from .base import APQStorageBackend

logger = logging.getLogger(__name__)


class RedisAPQBackend(APQStorageBackend):
    """Redis APQ storage backend.

    This backend stores both persisted queries and cached responses in Redis.
    It provides fast in-memory storage with optional persistence and is ideal
    for high-performance caching scenarios.

    Note: This is a stub implementation for factory testing.
    """

    def __init__(self, config: Dict[str, Any]) -> None:
        """Initialize the Redis backend with configuration.

        Args:
            config: Backend configuration including Redis connection settings
        """
        self._config = config
        logger.debug("Redis APQ backend initialized (stub implementation)")

    def get_persisted_query(self, hash_value: str) -> Optional[str]:
        """Retrieve stored query by hash.

        Args:
            hash_value: SHA256 hash of the persisted query

        Returns:
            GraphQL query string if found, None otherwise
        """
        # Stub implementation
        return None

    def store_persisted_query(self, hash_value: str, query: str) -> None:
        """Store query by hash.

        Args:
            hash_value: SHA256 hash of the query
            query: GraphQL query string to store
        """
        # Stub implementation

    def get_cached_response(self, hash_value: str) -> Optional[Dict[str, Any]]:
        """Get cached JSON response for APQ hash.

        Args:
            hash_value: SHA256 hash of the persisted query

        Returns:
            Cached GraphQL response dict if found, None otherwise
        """
        # Stub implementation
        return None

    def store_cached_response(self, hash_value: str, response: Dict[str, Any]) -> None:
        """Store pre-computed JSON response for APQ hash.

        Args:
            hash_value: SHA256 hash of the persisted query
            response: GraphQL response dict to cache
        """
        # Stub implementation
