"""Chaintracks storage using SQL (Knex-style interface).

Provides persistent storage for chaintracks data using SQLAlchemy.

Reference: wallet-toolbox/src/services/chaintracker/chaintracks/storage/ChaintracksStorageKnex.ts
"""

from typing import Any


class ChaintracksStorageKnexOptions:
    """Options for ChaintracksStorageKnex."""

    def __init__(self, chain: str, config: dict[str, Any]):
        """Initialize options.

        Args:
            chain: Blockchain network
            config: Knex-style connection config
        """
        self.chain = chain
        self.config = config
        self.bulk_file_data_manager: Any = None


class ChaintracksStorageKnex:
    """SQL-based storage for chaintracks data.

    Provides a Knex-style interface for managing chaintracks
    headers, merkle trees, and metadata.

    Reference: wallet-toolbox/src/services/chaintracker/chaintracks/storage/ChaintracksStorageKnex.ts
    """

    def __init__(self, options: ChaintracksStorageKnexOptions):
        """Initialize storage.

        Args:
            options: Storage options
        """
        self.options = options
        self.chain = options.chain
        # Store knex instance from config (matches TypeScript implementation)
        # The config passed to create_storage_knex_options is the knex instance
        self.knex = options.config if hasattr(options, "config") else None

    @staticmethod
    def create_storage_knex_options(chain: str, config: dict[str, Any]) -> ChaintracksStorageKnexOptions:
        """Create default storage options.

        Args:
            chain: Blockchain network
            config: Knex-style connection config

        Returns:
            Storage options
        """
        return ChaintracksStorageKnexOptions(chain, config)

    async def make_available(self) -> None:
        """Initialize and make storage available for use."""
        await self.initialize()

    async def destroy(self) -> None:
        """Destroy storage connection and cleanup resources.

        Reference: wallet-toolbox/src/services/chaintracker/chaintracks/storage/ChaintracksStorageKnex.ts
                   override async destroy(): Promise<void> { await this.knex.destroy() }
        """
        if self.knex is not None and hasattr(self.knex, "destroy"):
            # Handle both sync and async destroy methods
            destroy_method = self.knex.destroy
            if callable(destroy_method):
                result = destroy_method()
                # If it returns a coroutine/awaitable, await it
                if hasattr(result, "__await__"):
                    await result

    async def initialize(self) -> None:
        """Initialize database schema."""

    async def store_headers(self, headers: list[dict[str, Any]]) -> None:
        """Store block headers.

        Args:
            headers: List of header dictionaries
        """

    async def get_headers(self, start_height: int, count: int) -> list[dict[str, Any]]:
        """Retrieve block headers.

        Args:
            start_height: Starting height
            count: Number of headers to retrieve

        Returns:
            List of header dictionaries
        """
        return []

    async def get_height_range(self) -> tuple[int, int]:
        """Get stored height range.

        Returns:
            Tuple of (min_height, max_height)
        """
        return (0, 0)

    async def get_available_height_ranges(self) -> list[tuple[int, int]]:
        """Get available height ranges.

        Returns:
            List of tuples representing available height ranges
        """
        # Return a stub range for testing
        return [(0, 0)]
