"""Pytest fixtures shared across API v1 tests."""
from __future__ import annotations

from collections.abc import AsyncGenerator

import pytest
import pytest_asyncio
from httpx import ASGITransport, AsyncClient
from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine

from app.api.deps import get_db_session
from app.core.security import password_hasher
from app.main import create_app
from app.models import Base


@pytest.fixture(autouse=True)
def stub_password_hasher(monkeypatch: pytest.MonkeyPatch) -> None:
    """Replace bcrypt-dependent hashing with deterministic helpers for tests."""

    def fake_hash(password: str) -> str:
        return f"hashed-{password}"

    def fake_verify(password: str, hashed_password: str) -> bool:
        return hashed_password == f"hashed-{password}"

    monkeypatch.setattr(password_hasher, "hash", fake_hash)
    monkeypatch.setattr(password_hasher, "verify", fake_verify)


@pytest_asyncio.fixture()
async def session_factory() -> AsyncGenerator[async_sessionmaker[AsyncSession], None]:
    engine = create_async_engine("sqlite+aiosqlite:///:memory:", future=True)
    async with engine.begin() as conn:
        await conn.run_sync(Base.metadata.create_all)
    factory = async_sessionmaker(engine, expire_on_commit=False)
    yield factory
    await engine.dispose()


@pytest_asyncio.fixture()
async def client(
    session_factory: async_sessionmaker[AsyncSession],
) -> AsyncGenerator[AsyncClient, None]:
    app = create_app()

    async def _get_session_override() -> AsyncGenerator[AsyncSession, None]:
        async with session_factory() as session:
            try:
                yield session
                await session.commit()
            except Exception:
                await session.rollback()
                raise

    app.dependency_overrides[get_db_session] = _get_session_override
    transport = ASGITransport(app=app)
    async with AsyncClient(transport=transport, base_url="http://testserver") as test_client:
        yield test_client