#!/usr/bin/env python3
from __future__ import annotations

import importlib.util
from pathlib import Path


HERE = Path(__file__).resolve().parent


def load_module():
    spec = importlib.util.spec_from_file_location(
        "intervention_response_p1", HERE / "analyze_p1.py"
    )
    module = importlib.util.module_from_spec(spec)
    assert spec.loader is not None
    spec.loader.exec_module(module)
    return module


def main() -> None:
    module = load_module()
    values = [-2.0, -1.0, 1.0, 2.0]
    labels = [0, 0, 1, 1]
    threshold, direction, balanced = module._fit_threshold(values, labels)
    assert direction == 1
    assert -1.0 < threshold < 1.0
    assert balanced == 1.0
    assert module._balanced_accuracy(labels, labels) == 1.0
    assert module._balanced_accuracy(labels, [1, 1, 0, 0]) == 0.0
    print("intervention response P1 confirmation analysis: PASS")


if __name__ == "__main__":
    main()