"""Pytest configuration and fixtures for all tests."""

from collections.abc import Generator

import pytest
from fastapi.testclient import TestClient
from sqlalchemy import create_engine
from sqlalchemy.orm import Session, sessionmaker
from sqlalchemy.pool import StaticPool

from app.core.deps import get_db
from app.database.base import Base
from app.main import app

# Use in-memory SQLite for tests
SQLALCHEMY_DATABASE_URL = "sqlite:///:memory:"

engine = create_engine(
    SQLALCHEMY_DATABASE_URL,
    connect_args={"check_same_thread": False},
    poolclass=StaticPool,
)

TestingSessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)


@pytest.fixture(scope="function")
def db() -> Generator[Session, None, None]:
    """
    Create a fresh database for each test.

    Yields:
        Database session
    """
    # Create all tables
    Base.metadata.create_all(bind=engine)

    # Create session
    session = TestingSessionLocal()

    try:
        yield session
    finally:
        session.close()
        # Drop all tables after test
        Base.metadata.drop_all(bind=engine)


@pytest.fixture(scope="function")
def client(db: Session) -> Generator[TestClient, None, None]:
    """
    Create a test client with database override.

    Args:
        db: Test database session

    Yields:
        FastAPI test client
    """

    def override_get_db():
        try:
            yield db
        finally:
            pass

    app.dependency_overrides[get_db] = override_get_db

    with TestClient(app) as test_client:
        yield test_client

    app.dependency_overrides.clear()


@pytest.fixture
def test_user_data() -> dict:
    """
    Standard test user data.

    Returns:
        Dictionary with test user credentials
    """
    return {"email": "test@example.com", "password": "TestPassword123"}


@pytest.fixture
def test_user_data_weak_password() -> dict:
    """
    Test user data with weak password.

    Returns:
        Dictionary with weak password
    """
    return {"email": "test@example.com", "password": "weak"}


@pytest.fixture
def test_user_data_no_uppercase() -> dict:
    """
    Test user data with no uppercase letter.

    Returns:
        Dictionary with invalid password
    """
    return {"email": "test@example.com", "password": "testpassword123"}


@pytest.fixture
def test_user(client: TestClient, test_user_data: dict):
    """
    Create and return a test user.

    Args:
        client: Test client
        test_user_data: User credentials

    Returns:
        User object
    """
    from app.database.models.user import User

    response = client.post("/api/v1/auth/register", json=test_user_data)
    user_id = response.json()["id"]

    # Get user from database (use same db session)
    from app.core.deps import get_db

    db_gen = next(app.dependency_overrides[get_db]())
    user = db_gen.query(User).filter(User.id == user_id).first()
    return user


@pytest.fixture
def auth_headers(client: TestClient, test_user_data: dict) -> dict:
    """
    Create authenticated headers with JWT token.

    Args:
        client: Test client
        test_user_data: User credentials

    Returns:
        Dictionary with Authorization header
    """
    # Register and login
    client.post("/api/v1/auth/register", json=test_user_data)
    login_response = client.post("/api/v1/auth/login", json=test_user_data)
    token = login_response.json()["access_token"]
    return {"Authorization": f"Bearer {token}"}


@pytest.fixture
def other_user_data() -> dict:
    """
    Data for a second test user.

    Returns:
        Dictionary with test user credentials
    """
    return {"email": "other@example.com", "password": "OtherPassword123"}


@pytest.fixture
def other_auth_headers(client: TestClient, other_user_data: dict) -> dict:
    """
    Create authenticated headers for a second user.

    Args:
        client: Test client
        other_user_data: Other user credentials

    Returns:
        Dictionary with Authorization header
    """
    # Register and login
    client.post("/api/v1/auth/register", json=other_user_data)
    login_response = client.post("/api/v1/auth/login", json=other_user_data)
    token = login_response.json()["access_token"]
    return {"Authorization": f"Bearer {token}"}


@pytest.fixture
def test_board(client: TestClient, auth_headers: dict):
    """
    Create a test board.

    Args:
        client: Test client
        auth_headers: Authentication headers

    Returns:
        Board object
    """
    from app.database.models.board import Board

    response = client.post(
        "/api/v1/boards",
        json={"title": "Test Board", "description": "Test description"},
        headers=auth_headers,
    )
    board_id = response.json()["id"]

    # Get board from database
    from app.core.deps import get_db

    db_gen = next(app.dependency_overrides[get_db]())
    board = db_gen.query(Board).filter(Board.id == board_id).first()
    return board