"""Shared test fixtures."""

import os
from pathlib import Path

import pytest
from sqlmodel import Session, SQLModel, create_engine

# Force tests to use a temp SQLite file instead of the real data/ dir.
os.environ.setdefault("AGENTEVAL_DATA_DIR_OVERRIDE", "")


@pytest.fixture()
def anyio_backend():
    return "asyncio"


@pytest.fixture()
def tmp_db_path(tmp_path: Path) -> Path:
    """Return a path to a throwaway SQLite file for one test."""
    return tmp_path / "test.db"


@pytest.fixture()
def db_session(tmp_db_path: Path) -> Session:
    """Yield a SQLModel Session backed by a fresh in-memory-ish SQLite file.

    Tables are created via SQLModel.metadata.create_all; the session is closed
    at the end of the test.
    """
    # Import DB models so their table=True declarations register in metadata.
    from agenteval.storage.db import (  # noqa: F401
        CampaignDB,
        EvalResultDB,
        EvalRunDB,
        EvalTargetDB,
        ModelConfigDB,
        ScenarioDB,
        ScenarioModelBindingDB,
        TurnDB,
    )

    engine = create_engine(
        f"sqlite:///{tmp_db_path}",
        connect_args={"check_same_thread": False},
    )
    SQLModel.metadata.create_all(engine)

    # Sanity check: verify the scenarios table has all expected columns.
    from sqlalchemy import inspect as sa_inspect
    cols = [c["name"] for c in sa_inspect(engine).get_columns("scenarios")]
    assert "llm_config" in cols, f"scenarios table missing llm_config; cols={cols}"

    session = Session(engine)
    try:
        yield session
    finally:
        session.close()
        engine.dispose()