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# pylint: disable=redefined-outer-name

from typing import Iterator

import pytest
from pytest_mock import MockFixture
from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker
from sqlalchemy.orm.session import Session

from superset.app import SupersetApp
from superset.initialization import SupersetAppInitializer


@pytest.fixture()
def session() -> Iterator[Session]:
    """
    Create an in-memory SQLite session to test models.
    """
    engine = create_engine("sqlite://")
    Session_ = sessionmaker(bind=engine)  # pylint: disable=invalid-name
    in_memory_session = Session_()

    # flask calls session.remove()
    in_memory_session.remove = lambda: None

    yield in_memory_session


@pytest.fixture
def app(mocker: MockFixture, session: Session) -> Iterator[SupersetApp]:
    """
    A fixture that generates a Superset app.
    """
    app = SupersetApp(__name__)

    app.config.from_object("superset.config")
    app.config["SQLALCHEMY_DATABASE_URI"] = "sqlite://"
    app.config["FAB_ADD_SECURITY_VIEWS"] = False

    app_initializer = app.config.get("APP_INITIALIZER", SupersetAppInitializer)(app)
    app_initializer.init_app()

    # patch session
    mocker.patch(
        "superset.security.SupersetSecurityManager.get_session", return_value=session,
    )
    mocker.patch("superset.db.session", session)

    yield app


@pytest.fixture
def app_context(app: SupersetApp) -> Iterator[None]:
    """
    A fixture that yields and application context.
    """
    with app.app_context():
        yield