import importlib
import sys
from pathlib import Path

from fastapi import FastAPI

from app import config as config_module
from app.config import Settings, get_settings

TEST_CONFIG_FILE = Path(__file__).resolve().parents[2] / "config.test.yaml"

def _import_main_module(monkeypatch):
    get_settings.cache_clear()
    monkeypatch.setattr(config_module, "TEST_CONFIG_FILE", str(TEST_CONFIG_FILE))
    sys.modules.pop("app.main", None)
    return importlib.import_module("app.main")


def test_app_import_smoke(monkeypatch) -> None:
    main_module = _import_main_module(monkeypatch)

    assert isinstance(main_module.app, FastAPI)
    assert isinstance(main_module.app.state.settings, Settings)
    get_settings.cache_clear()


def test_app_created_with_provided_settings(monkeypatch) -> None:
    main_module = _import_main_module(monkeypatch)
    monkeypatch.setattr(config_module, "TEST_CONFIG_FILE", str(TEST_CONFIG_FILE))

    settings = Settings()
    instance = main_module.create_app(settings=settings)

    assert instance.state.settings is settings
    get_settings.cache_clear()