"""Bulk manager for Chaintracks service.

Manages bulk header synchronization from various sources (CDN, WhatsOnChain).

Reference: go-wallet-toolbox/pkg/services/chaintracks/bulk_manager.go
"""

import logging
from typing import Any

from ...wallet_services import Chain
from .bulk_ingestor_interface import NamedBulkIngestor
from .models import HeightRanges

logger = logging.getLogger(__name__)


class BulkManager:
    """Manages bulk header synchronization from multiple sources."""

    def __init__(self, chain: Chain, bulk_ingestors: list[NamedBulkIngestor]):
        """Initialize bulk manager.

        Args:
            chain: Blockchain network
            bulk_ingestors: List of configured bulk ingestors
        """
        self.chain = chain
        self.bulk_ingestors = bulk_ingestors

        logger.info(f"BulkManager initialized with {len(bulk_ingestors)} ingestors for {chain}")

    def get_height_range(self) -> Any | None:
        """Get the height range covered by bulk storage.

        Returns:
            HeightRange for bulk data, or None if no bulk data
        """
        # TODO: Implement bulk height range tracking
        # For now, return a placeholder range
        return None

    async def sync_bulk_storage(self, present_height: int, ranges: HeightRanges, live_height_threshold: int) -> None:
        """Synchronize bulk storage with current blockchain state.

        Args:
            present_height: Current blockchain height
            ranges: Current available height ranges
            live_height_threshold: Threshold for migrating live to bulk
        """
        # TODO: Implement bulk sync logic
        logger.debug("Bulk sync requested but not yet implemented")

    async def find_header_for_height(self, height: int) -> dict[str, Any] | None:
        """Find header for specific height from bulk storage.

        Args:
            height: Block height to find

        Returns:
            Block header dict or None if not found
        """
        # TODO: Implement bulk header lookup
        return None

    def files_info(self) -> dict[str, Any]:
        """Get information about bulk files.

        Returns:
            Dictionary with bulk file information
        """
        # TODO: Implement bulk files info
        return {"rootFolder": "", "jsonFilename": "", "headersPerFile": 100000, "files": []}

    def get_file_data_by_index(self, index: int) -> Any | None:
        """Get bulk file data by index.

        Args:
            index: File index

        Returns:
            BulkFileData or None if not found
        """
        # TODO: Implement file data retrieval
        return None

    async def migrate_from_live_headers(self, headers: list[Any]) -> None:
        """Migrate live headers to bulk storage.

        Args:
            headers: List of LiveBlockHeader to migrate
        """
        # TODO: Implement live to bulk migration
        logger.debug(f"Live to bulk migration requested for {len(headers)} headers")

    def last_header(self) -> tuple[dict[str, Any] | None, Any | None]:
        """Get the last header from bulk storage.

        Returns:
            Tuple of (last_header, chain_work) or (None, None)
        """
        # TODO: Implement last header lookup
        return None, None

    async def get_gap_headers_as_live(
        self, present_height: int, live_range: Any, recursion_limit: int
    ) -> list[dict[str, Any]]:
        """Get gap headers that need to be filled between bulk and live.

        Args:
            present_height: Current blockchain height
            live_range: Current live height range
            recursion_limit: Maximum recursion depth

        Returns:
            List of block headers to fill the gap
        """
        # TODO: Implement gap filling logic
        return []
