"""
conftest.py — shared fixtures for the ExCALIBR test suite.

Sets EXCALIBR_JOBS_DIR to a temporary directory before any module is imported,
so api.py never touches the real /jobs directory during tests.
"""

import os
import shutil
import tempfile
from pathlib import Path

import pytest

# ── Set env var BEFORE api.py is imported ─────────────────────────────────────
# pytest collects conftest.py first, so this runs before any test module import.

_tmp_jobs_root = Path(__file__).parent / "tmp_jobs"


def pytest_configure(config):
    """Create the temp jobs directory and point the app at it."""
    _tmp_jobs_root.mkdir(exist_ok=True)
    os.environ["EXCALIBR_JOBS_DIR"] = str(_tmp_jobs_root)


def pytest_unconfigure(config):
    """Remove the temp jobs directory after the full test run."""
    shutil.rmtree(_tmp_jobs_root, ignore_errors=True)


@pytest.fixture(autouse=True)
def clean_jobs_dir():
    """Wipe tmp_jobs before each test so tests don't bleed into each other."""
    shutil.rmtree(_tmp_jobs_root, ignore_errors=True)
    _tmp_jobs_root.mkdir()
    yield
    # Leave cleanup to pytest_unconfigure at session end


@pytest.fixture
def client():
    """FastAPI TestClient — fresh per test with rate limit cleared."""
    from fastapi.testclient import TestClient
    import backend.api as api_module

    # Reset in-memory rate limit state between tests
    api_module._rate_limit.clear()
    api_module.jobs.clear()

    with TestClient(api_module.app) as c:
        yield c


@pytest.fixture
def minimal_csv(tmp_path) -> Path:
    """A minimal valid CSV with enough rows to pass basic validation."""
    content = "score,sample_assignments\n"
    # 10 pathogenic, 10 benign, 5 synonymous
    for _ in range(10):
        content += "1.5,0\n"
    for _ in range(10):
        content += "-1.5,1\n"
    for _ in range(5):
        content += "0.1,3\n"
    p = tmp_path / "test.csv"
    p.write_text(content)
    return p


@pytest.fixture
def default_params() -> str:
    import json
    return json.dumps({
        "components": [2, 3],
        "nBootstraps": 10,
        "fitsPerBootstrap": 5,
        "benignMethod": "avg",
        "conservativeMonotonicity": True,
    })