"""S4: the replay names the field-weighted experiment a result came from.

The field model is an experiment, and its numbers are estimates: the result records
its model fingerprint, the declared unloaded reference and the mean extrapolated
fraction. The replay has to say so — and say "unknown" for a result that predates
the diagnostics, never 0.
"""

from __future__ import annotations

from types import SimpleNamespace

from orisys_app_shared.analysis.model import FIELD_PROFILE
from orisys_app_shared.i18n import set_locale, t

from orisys_studio.replay_controller import field_experiment_note


def _session(field: dict) -> SimpleNamespace:
    return SimpleNamespace(
        reader=SimpleNamespace(provenance=SimpleNamespace(field=field))
    )


FIELD = {
    "profile": FIELD_PROFILE,
    "strategy": "field-weighted-baseline-1",
    "model_fingerprint": "abcdef0123456789" * 4,
    "reference_id": "video-unloaded-36",
    "baseline_N": 0.25,
    "frames": 35,
    "extrapolated_mean": 0.3,
    "extrapolated_max": 0.4,
    "coverage_mean": 0.95,
    "hhd": {"downsample": 2, "grid_shape": [150, 140]},
}


def teardown_function():
    set_locale("zh_CN")


def test_a_field_result_names_its_baseline_and_extrapolation():
    set_locale("zh_CN")
    note, tip = field_experiment_note(_session(dict(FIELD)))
    assert note == t(
        "chart.field_experiment",
        baseline="0.250",
        frames=35,
        extrapolated="30.0",
    )
    assert "field-weighted-baseline-1" in tip
    assert "abcdef0123456789" in tip
    assert "150x140" in tip or "150 × 140" in tip

    set_locale("en_US")
    english, _ = field_experiment_note(_session(dict(FIELD)))
    assert english and english != note
    assert "30.0" in english


def test_a_field_result_without_diagnostics_says_unknown():
    set_locale("zh_CN")
    note, tip = field_experiment_note(_session({"profile": FIELD_PROFILE}))
    assert note == t("chart.field_unknown")
    assert tip == t("chart.field_unknown_tip")


def test_a_scalar_or_missing_result_has_no_field_note():
    assert field_experiment_note(_session({})) == ("", "")
    assert field_experiment_note(None) == ("", "")
    assert field_experiment_note(SimpleNamespace(reader=None)) == ("", "")