"""Diagnostic: real CTA backtest of DoubleMaStrategy on 600000 (A-share daily).
Guarded entry for spawn. Throwaway."""
import sys
import os
import traceback

_VNPY_SRC = os.path.abspath(os.path.join(os.path.dirname(__file__), "..", "vnpy_v4.4.0"))
_REPO = os.path.dirname(_VNPY_SRC)
for _p in (_REPO, _VNPY_SRC):
    if _p not in sys.path:
        sys.path.insert(0, _p)


def main():
    # Configure vnpy DB to the real quant_trading.db BEFORE engine.load_data()
    from vnpy.trader.setting import SETTINGS
    from sanguo_data.config import load_config
    cfg = load_config("/app/config/data_platform.yaml")
    SETTINGS["database.name"] = "sqlite"
    SETTINGS["database.database"] = cfg.data_paths["vnpy_db"]
    print("DB:", SETTINGS["database.database"])

    from vnpy_ctastrategy.strategies.double_ma_strategy import DoubleMaStrategy
    print("DoubleMaStrategy.parameters:", getattr(DoubleMaStrategy, "parameters", "?"))

    from sanguo_backtest.cta_engine import run_cta_backtest
    # Classic double-MA params (vnpy example defaults); fixed_size=1
    params = {"fast_window": 10, "slow_window": 20, "fixed_size": 1}

    print(f"run_cta_backtest DoubleMaStrategy on 600000, 2024-01-01..2024-06-30, params={params}")
    try:
        result = run_cta_backtest(
            DoubleMaStrategy, "600000", params,
            "2024-01-01", "2024-06-30", cfg, "/tmp/cta_results.db",
        )
        print("=== status:", result.status)
        print("=== statistics ===")
        if result.statistics:
            for k, v in result.statistics.items():
                print(f"  {k}: {v}")
        else:
            print("  (empty)")
        if result.status == "failed":
            print("=== error ===")
            print(result.error_msg)
    except Exception:
        traceback.print_exc()


if __name__ == "__main__":
    main()