"""Congress trading data: member trades and bill search."""

import asyncio
import logging
from typing import Any

from openbb import obb

from obb_utils import to_list

logger = logging.getLogger(__name__)


async def _try_obb_call(fn, *args, **kwargs) -> list[dict[str, Any]] | None:
    """Attempt a single OBB call and return to_list result, or None on failure."""
    try:
        result = await asyncio.to_thread(fn, *args, **kwargs)
        return to_list(result)
    except Exception as exc:
        logger.debug("OBB call failed: %s", exc)
        return None


def _get_congress_fn():
    """Resolve the congress trading OBB function safely."""
    try:
        return obb.regulators.government_us.congress_trading
    except AttributeError:
        logger.debug("obb.regulators.government_us.congress_trading not available")
        return None


async def get_congress_trades() -> list[dict[str, Any]]:
    """Get recent US congress member stock trades.

    Returns an empty list if the data provider is unavailable.
    """
    fn = _get_congress_fn()
    if fn is None:
        return []

    providers = ["quiverquant", "fmp"]
    for provider in providers:
        data = await _try_obb_call(fn, provider=provider)
        if data is not None:
            return data

    logger.warning("All congress trades providers failed")
    return []


async def search_congress_bills(query: str) -> list[dict[str, Any]]:
    """Search US congress bills by keyword.

    Returns an empty list if the data provider is unavailable.
    """
    fn = _get_congress_fn()
    if fn is None:
        return []

    providers = ["quiverquant", "fmp"]
    for provider in providers:
        data = await _try_obb_call(fn, query, provider=provider)
        if data is not None:
            return data

    logger.warning("All congress bills providers failed for query: %s", query)
    return []