from __future__ import annotations

from unittest.mock import MagicMock

from app.config import Settings
from app.utils.runtime_state import get_app_settings, get_effective_settings


class _FakeState:
    def __init__(self, settings: Settings, runtime_settings: object | None = None) -> None:
        self.settings = settings
        self.runtime_settings = runtime_settings


class _FakeApp:
    def __init__(self, state: object) -> None:
        self.state = state


def test_get_effective_settings_returns_runtime_settings() -> None:
    settings = Settings(session_secret="secret")
    runtime_settings = settings.model_copy(update={"database_path": "/tmp/runtime.db"})
    app = _FakeApp(_FakeState(settings=settings, runtime_settings=runtime_settings))

    assert get_effective_settings(app) is runtime_settings


def test_get_effective_settings_returns_app_settings_when_runtime_none() -> None:
    settings = Settings(session_secret="secret")
    app = _FakeApp(_FakeState(settings=settings))

    assert get_effective_settings(app) is settings


def test_get_effective_settings_returns_mock_runtime_settings() -> None:
    settings = Settings(session_secret="secret")
    mock_settings = MagicMock()
    app = _FakeApp(_FakeState(settings=settings, runtime_settings=mock_settings))

    assert get_effective_settings(app) is mock_settings


def test_get_app_settings_reads_bootstrap_settings() -> None:
    settings = Settings(session_secret="secret")
    app = _FakeApp(_FakeState(settings=settings))

    assert get_app_settings(app) is settings