"""Backtesting engine."""

from typing import List, Dict, Any
from datetime import date
from qfinlib.portfolio.portfolio import Portfolio


class BacktestEngine:
    """Backtesting engine for strategies."""

    def __init__(self, start_date: date, end_date: date):
        """Initialize backtest engine."""
        self.start_date = start_date
        self.end_date = end_date

    def run(self, strategy: callable, initial_capital: float = 1000000.0) -> Dict[str, Any]:
        """Run a backtest."""
        # Placeholder - actual implementation would simulate trading
        return {
            "total_return": 0.0,
            "sharpe_ratio": 0.0,
            "max_drawdown": 0.0,
        }
