"""AC-10: SBOM diff script + OpenCV pin gate exist and run on stub builds."""

from __future__ import annotations

import json
import subprocess
import sys
from pathlib import Path

REPO_ROOT = Path(__file__).resolve().parents[2]
CI_DIR = REPO_ROOT / "ci"


def test_sbom_diff_pass_on_subset(tmp_path: Path) -> None:
    # Arrange
    research = tmp_path / "research_sbom.json"
    deployment = tmp_path / "deployment_sbom.json"
    research.write_text(
        json.dumps(
            [
                {"name": "numpy", "version": "1.26.4"},
                {"name": "scipy", "version": "1.11.3"},
                {"name": "okvis2", "version": "0.1.0"},
            ]
        )
    )
    deployment.write_text(
        json.dumps(
            [
                {"name": "numpy", "version": "1.26.4"},
                {"name": "okvis2", "version": "0.1.0"},
            ]
        )
    )

    # Act
    result = subprocess.run(
        [
            sys.executable,
            str(CI_DIR / "sbom_diff.py"),
            "--deployment",
            str(deployment),
            "--research",
            str(research),
        ],
        capture_output=True,
        text=True,
        check=False,
    )

    # Assert
    assert result.returncode == 0, f"sbom_diff stderr:\n{result.stderr}"


def test_sbom_diff_fails_on_forbidden_component(tmp_path: Path) -> None:
    # Arrange — ADR-002 / R02: vins_mono must not appear in deployment SBOM
    research = tmp_path / "research_sbom.json"
    deployment = tmp_path / "deployment_sbom.json"
    research.write_text(json.dumps([{"name": "vins_mono", "version": "0.1"}]))
    deployment.write_text(json.dumps([{"name": "vins_mono", "version": "0.1"}]))

    # Act
    result = subprocess.run(
        [
            sys.executable,
            str(CI_DIR / "sbom_diff.py"),
            "--deployment",
            str(deployment),
            "--research",
            str(research),
        ],
        capture_output=True,
        text=True,
        check=False,
    )

    # Assert
    assert result.returncode != 0, (
        "sbom_diff must fail when a research-only component appears in deployment"
    )


def test_opencv_pin_gate_passes_on_412_minimum() -> None:
    # Act
    result = subprocess.run(
        [
            sys.executable,
            str(CI_DIR / "opencv_pin_gate.py"),
            "--pyproject",
            str(REPO_ROOT / "pyproject.toml"),
        ],
        capture_output=True,
        text=True,
        check=False,
    )

    # Assert
    assert result.returncode == 0, f"opencv_pin_gate stderr:\n{result.stderr}"


def test_opencv_pin_gate_fails_on_lower_version(tmp_path: Path) -> None:
    # Arrange
    bad_pyproject = tmp_path / "pyproject.toml"
    bad_pyproject.write_text(
        '[project]\nname = "x"\nversion = "0.1"\ndependencies = ["opencv-python>=4.10,<5"]\n'
    )

    # Act
    result = subprocess.run(
        [
            sys.executable,
            str(CI_DIR / "opencv_pin_gate.py"),
            "--pyproject",
            str(bad_pyproject),
        ],
        capture_output=True,
        text=True,
        check=False,
    )

    # Assert
    assert result.returncode != 0, (
        "opencv_pin_gate must reject `opencv-python>=4.10` (D-CROSS-CVE-1 ≥ 4.12.0)"
    )