"""Shared fixtures: fast synthetic stores (no pod5 needed) and determinism."""

from __future__ import annotations

import sys
from pathlib import Path

import pytest

sys.path.insert(0, str(Path(__file__).resolve().parents[1] / "src"))

from custom_models.seed import seed_everything
from custom_models.store import synthetic_store


@pytest.fixture(autouse=True)
def _seed_every_test() -> None:
    """Seed all RNGs before each test (the GATE ZERO §2.3 contract)."""
    seed_everything(0)


@pytest.fixture(scope="session")
def fast_store(tmp_path_factory: pytest.TempPathFactory) -> Path:
    """A small 6-genus duty-cycle store for split/config tests."""
    out = tmp_path_factory.mktemp("store") / "main"
    synthetic_store(
        out_dir=out,
        n_genera=6,
        reads_per_genus=12,
        window_samples=1200,
        shard_windows=8,
        seed=0,
    )
    return out


@pytest.fixture(scope="session")
def trap_store(tmp_path_factory: pytest.TempPathFactory) -> Path:
    """A small eval-only impostor store (and test-split source)."""
    out = tmp_path_factory.mktemp("store") / "trap"
    synthetic_store(
        out_dir=out,
        n_genera=2,
        reads_per_genus=6,
        window_samples=1200,
        shard_windows=8,
        seed=1,
        genus_prefix="trap_",
    )
    return out