# Copyright 2026 Emile de Bruyn
# SPDX-License-Identifier: Apache-2.0

from types import SimpleNamespace

import pandas as pd
import pytest

from motifbench_prosite.structure_analysis import RMSDAnalysisConfig, compute_motif_stats
from motifbench_prosite.unified_export import run_unified_export
from motifbench_prosite import pdb_io
from test_structure_analysis import _FakeFsCfg, _FakeFsRunner, _make_dummy_dataset


def test_empty_foldseek_clusters_fail(tmp_path):
    with pytest.raises(ValueError, match="no clusters"):
        compute_motif_stats(
            _make_dummy_dataset(),
            RMSDAnalysisConfig(min_instances=1, rmsd_threshold=5, cluster_threshold=5),
            max_workers=1, foldseek_runner=_FakeFsRunner([]),
            foldseek_cfg=_FakeFsCfg(), tmpdir=tmp_path,
        )


def test_foldseek_conservation_does_not_fall_back_to_rmsd(tmp_path):
    cfg = SimpleNamespace(
        output_root=tmp_path,
        structure_analysis=SimpleNamespace(foldseek_conservation=True),
    )
    stats = pd.DataFrame([{"motif_entry": "E1", "median_pairwise_rmsd": 1.0}])
    with pytest.raises(RuntimeError, match="no cluster statistics"):
        run_unified_export(cfg, pd.DataFrame([{"entry": "E1"}]), _make_dummy_dataset(), stats)


def test_failed_downloads_are_not_silently_ignored(tmp_path, monkeypatch):
    monkeypatch.setattr(pdb_io, "_download_worker", lambda payload: ("ABCD", False, False, True))
    with pytest.raises(RuntimeError, match="ABCD"):
        pdb_io.download_pdbs(["ABCD"], tmp_path, max_workers=1, use_processes=False)