from __future__ import annotations

from app.broker.base import Broker, Fill
from app.broker.binance import TESTNET_URL, BinanceBroker
from app.broker.paper import PaperBroker
from app.config import Settings
from app.market.binance import BASE_URL


def build_broker(settings: Settings) -> Broker:
    if settings.mode == "live":
        return BinanceBroker(
            api_key=settings.exchange_api_key,
            api_secret=settings.exchange_api_secret,
            base_url=TESTNET_URL if settings.exchange_sandbox else BASE_URL,
        )
    return PaperBroker(fee_bps=settings.fee_bps, slippage_bps=settings.slippage_bps)


__all__ = ["Broker", "Fill", "PaperBroker", "build_broker"]