"""Standalone smoke test for the SN9000 multi-port VISA HiSLIP acquisition path."""

from __future__ import annotations

import argparse

import numpy as np

from python_app.hardware_full.sn9000_service import Sn9000Service
from python_app.models.dataset_model import SweepCollection
from python_app.models.run_config_model import RadarSweepModel, RunConfigModel


def _parse_args() -> argparse.Namespace:
    parser = argparse.ArgumentParser(description="Acquire one SN9000 collection through VISA HiSLIP")
    parser.add_argument(
        "--host",
        default="127.0.0.1",
        help="SNVNA HiSLIP server host (default: 127.0.0.1)",
    )
    parser.add_argument(
        "--port",
        type=int,
        default=4880,
        help="SNVNA HiSLIP server TCP port (default: 4880)",
    )
    parser.add_argument("--start-hz", type=float, default=1_000_000.0)
    parser.add_argument("--stop-hz", type=float, default=3_000_000_000.0)
    parser.add_argument("--points", type=int, default=201)
    parser.add_argument("--ifbw-hz", type=float, default=10_000.0)
    parser.add_argument("--power-dbm", type=float, default=-10.0)
    parser.add_argument("--timeout-ms", type=int, default=20_000)
    parser.add_argument("--no-preset", action="store_true")
    parser.add_argument(
        "--visa-library",
        default="@ivi",
        help="PyVISA IVI backend specification, e.g. @ivi or /usr/lib/x86_64-linux-gnu/libvisa.so",
    )
    return parser.parse_args()


def _validate_collection(collection: SweepCollection, expected_points: int) -> None:
    expected_traces = (
        RunConfigModel.MULTI_DEVICE_INPUT_POSITIONS * RunConfigModel.MULTI_DEVICE_OUTPUT_POSITIONS
    )
    if len(collection.traces) != expected_traces:
        raise RuntimeError(
            f"SN9000 collection has {len(collection.traces)} traces, expected {expected_traces}"
        )

    reference_frequency = collection.traces[0].frequency_hz
    if reference_frequency.shape != (expected_points,):
        raise RuntimeError(f"Unexpected frequency shape: {reference_frequency.shape}")
    if not np.all(np.isfinite(reference_frequency)):
        raise RuntimeError("Frequency axis contains non-finite values")
    if np.any(np.diff(reference_frequency) < 0.0):
        raise RuntimeError("Frequency axis is not monotonic")

    expected_combos = RunConfigModel.build_matrix_radar_virtual_combos()
    for trace, expected_combo in zip(collection.traces, expected_combos, strict=True):
        if (
            int(trace.combo.input) != int(expected_combo.input)
            or int(trace.combo.output) != int(expected_combo.output)
        ):
            raise RuntimeError(
                f"Trace combo mismatch: got ({trace.combo.input},{trace.combo.output}), "
                f"expected ({expected_combo.input},{expected_combo.output})"
            )
        if trace.s11.shape != (expected_points,) or trace.s21.shape != (expected_points,):
            raise RuntimeError(
                f"Trace ({trace.combo.input},{trace.combo.output}) has shapes "
                f"s11={trace.s11.shape}, s21={trace.s21.shape}"
            )
        if not np.all(np.isfinite(trace.s11.real)) or not np.all(np.isfinite(trace.s11.imag)):
            raise RuntimeError(
                f"Trace ({trace.combo.input},{trace.combo.output}) S11 contains non-finite values"
            )
        if not np.all(np.isfinite(trace.s21.real)) or not np.all(np.isfinite(trace.s21.imag)):
            raise RuntimeError(
                f"Trace ({trace.combo.input},{trace.combo.output}) S21 contains non-finite values"
            )


def main() -> int:
    args = _parse_args()
    sweep = RadarSweepModel(
        start_hz=args.start_hz,
        stop_hz=args.stop_hz,
        points=args.points,
        if_bandwidth_hz=args.ifbw_hz,
        power_dbm=args.power_dbm,
    )

    service = Sn9000Service(
        host=args.host,
        port=args.port,
        timeout_ms=args.timeout_ms,
        preset_on_open=not args.no_preset,
        visa_library=args.visa_library,
    )
    try:
        service.open()
        print(f"SN9000 IDN: {service.query_identity()}")
        service.configure(sweep)
        collection = service.acquire_collection(collection_id=1)
        _validate_collection(collection, args.points)
        system_error = service.query_system_error()
        if not system_error.startswith("0,"):
            raise RuntimeError(f"SN9000 SCPI error after sweep: {system_error}")
        mean_abs_s21 = np.mean([float(np.mean(np.abs(trace.s21))) for trace in collection.traces])
        print(
            "SN9000 collection OK: "
            f"traces={len(collection.traces)}, points={args.points}, "
            f"first_hz={collection.traces[0].frequency_hz[0]:.3f}, "
            f"last_hz={collection.traces[0].frequency_hz[-1]:.3f}, "
            f"mean_abs_s21={mean_abs_s21:.6g}"
        )
    finally:
        service.close()
    return 0


if __name__ == "__main__":
    raise SystemExit(main())