"""FT-N-01 — 350 m outlier injection tolerance (AZ-424 / AC-3.1).

Replays the Derkachi flight with the AZ-408 ``outlier`` injector at
``--density medium`` and verifies AC-1 / AC-2 / AC-3 via
``runner.helpers.outlier_tolerance_evaluator``.

Gated on the same upstream replay helpers as FT-N-02 / FT-P-07
(``frame_source_replay``, ``fdr_reader``, ``imu_replay``). When those
helpers are still stubbed (current state under AZ-441 / AZ-407
leftovers), the scenario test skips while
``e2e/_unit_tests/helpers/test_outlier_tolerance_evaluator.py`` covers
the pure-logic AC-2 / AC-3 invariants.
"""

from __future__ import annotations

from pathlib import Path

import pytest

from fixtures.injectors.outlier import OutlierInjectionReport
from runner.helpers import outlier_tolerance_evaluator as ote


@pytest.mark.parametrize(
    "outlier_injection_derkachi",
    [{"density": "medium", "seed": 0}],
    indirect=True,
)
@pytest.mark.traces_to("AC-3.1,AC-1,AC-2,AC-3,AC-4")
def test_ft_n_01_outlier_tolerance(
    fc_adapter: str,
    vio_strategy: str,
    outlier_injection_derkachi: OutlierInjectionReport,
    evidence_dir,  # type: ignore[no-untyped-def]
    run_id: str,
    nfr_recorder,  # type: ignore[no-untyped-def]
    sitl_replay_ready: bool,
) -> None:
    if not sitl_replay_ready:
        pytest.skip(
            "FT-N-01 full replay requires `E2E_SITL_REPLAY_DIR` to point at a "
            "prepared SITL replay fixture (AZ-595). AC-1/AC-2/AC-3 helper logic "
            "covered by e2e/_unit_tests/helpers/test_outlier_tolerance_evaluator.py."
        )

    from runner.helpers import fdr_reader
    from runner.helpers.frame_source_replay import FrameSourceReplayer

    # 1. AC-1 — load injection plan (outlier event frames + offsets).
    manifest_path = outlier_injection_derkachi.out_root / "manifest.csv"
    events = ote.load_outlier_manifest(manifest_path)
    assert len(events) >= ote.MIN_OUTLIER_COUNT, (
        f"AC-1: medium-density injection must produce ≥{ote.MIN_OUTLIER_COUNT} "
        f"outliers (got {len(events)} from {manifest_path})"
    )

    # 2. Drive replay against the injected frames directory.
    FrameSourceReplayer(_resolve_frame_sink()).replay_video(
        outlier_injection_derkachi.out_root / "frames"
    )

    # 3. Collect outbound estimates + GT from FDR + tile cache.
    fdr_root = Path(evidence_dir).parent / f"run-{run_id}" / "fdr"
    estimates: list[ote.OutboundEstimate] = []
    for rec in fdr_reader.iter_records(fdr_root):
        if rec.record_type != "outbound_estimate":
            continue
        payload = rec.payload
        estimates.append(
            ote.OutboundEstimate(
                frame_idx=int(payload["frame_idx"]),  # type: ignore[arg-type]
                monotonic_ms=int(rec.monotonic_ms),
                lat_deg=float(payload["lat_deg"]),  # type: ignore[arg-type]
                lon_deg=float(payload["lon_deg"]),  # type: ignore[arg-type]
                cov_semi_major_m=float(payload["cov_semi_major_m"]),  # type: ignore[arg-type]
                source_label=str(payload["source_label"]),  # type: ignore[arg-type]
            )
        )
    gt: list[ote.GtPose] = _resolve_gt_per_frame(outlier_injection_derkachi)

    if not estimates:
        pytest.fail("FT-N-01: no outbound_estimate records produced")

    # 4. Evaluate per outlier event.
    report = ote.evaluate(events, estimates, gt)
    out_csv = evidence_dir / f"ft-n-01-{fc_adapter}-{vio_strategy}.csv"
    ote.write_csv_evidence(out_csv, report)

    # 5. NFR + AC assertions.
    nfr_recorder.record_metric(
        "ft_n_01.total_outliers", float(report.total_outliers), ac_id="AC-1"
    )
    nfr_recorder.record_metric(
        "ft_n_01.failed_event_count", float(report.failed_event_count), ac_id="AC-2"
    )
    for e in report.events:
        if e.drift_m is not None:
            nfr_recorder.record_metric(
                f"ft_n_01.event_{e.frame_idx}.drift_m", e.drift_m, ac_id="AC-2"
            )
        nfr_recorder.record_metric(
            f"ft_n_01.event_{e.frame_idx}.cov_non_decreasing",
            1.0 if e.cov_non_decreasing else 0.0,
            ac_id="AC-3",
        )

    assert report.passes_count, (
        f"AC-1: ≥{ote.MIN_OUTLIER_COUNT} outliers required; "
        f"got {report.total_outliers}"
    )
    for e in report.events:
        assert e.passes_drift, (
            f"AC-2 (drift ≤ {ote.DRIFT_BUDGET_M} m) failed at frame "
            f"{e.frame_idx}: drift_m={e.drift_m}, "
            f"error_before={e.error_before_m}, error_after={e.error_after_m}"
        )
        assert e.passes_covariance, (
            f"AC-3 (cov_semi_major_m non-decreasing across window) failed at "
            f"frame {e.frame_idx}: "
            f"cov_before={e.cov_before}, cov_outlier={e.cov_outlier}, "
            f"cov_after={e.cov_after}"
        )


def _resolve_frame_sink():  # type: ignore[no-untyped-def]
    raise NotImplementedError(
        "frame sink resolution is owned by AZ-441 / runner.helpers.frame_source_replay"
    )


def _resolve_gt_per_frame(report: OutlierInjectionReport) -> list[ote.GtPose]:
    raise NotImplementedError(
        "Per-frame GT resolution is owned by AZ-407 / runner.helpers.tile_cache_gt"
    )