"""Shared fixtures for e2e tests — dataset discovery + skip markers."""

from pathlib import Path

import pytest

REPO_ROOT = Path(__file__).resolve().parents[2]
DATASETS_ROOT = REPO_ROOT / "datasets"


@pytest.fixture(scope="session")
def euroc_mh01_root() -> Path:
    root = DATASETS_ROOT / "euroc" / "MH_01"
    if not (root / "mav0").is_dir():
        pytest.skip(
            f"EuRoC MH_01 not present at {root}. "
            "Run `python scripts/download_dataset.py euroc_mh01` to fetch it."
        )
    return root


@pytest.fixture(scope="session")
def vpair_sample_root() -> Path:
    root = DATASETS_ROOT / "vpair" / "sample"
    if not root.is_dir():
        pytest.skip(f"VPAIR sample not present at {root}.")
    return root


@pytest.fixture(scope="session")
def mars_lvig_root() -> Path:
    root = DATASETS_ROOT / "mars_lvig"
    if not root.is_dir():
        pytest.skip(f"MARS-LVIG not present at {root}.")
    return root