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
from app.runtime import logging as logging_module
from app.runtime import tracing as tracing_module

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:
    logging_bootstrap_calls: list[None] = []
    tracing_bootstrap_calls: list[tuple[FastAPI, object]] = []

    def fake_configure_logging() -> None:
        logging_bootstrap_calls.append(None)

    def fake_configure_tracing(app: FastAPI, observability: object) -> None:
        tracing_bootstrap_calls.append((app, observability))

    monkeypatch.setattr(logging_module, "configure_logging", fake_configure_logging)
    monkeypatch.setattr(tracing_module, "configure_tracing", fake_configure_tracing)
    main_module = _import_main_module(monkeypatch)

    assert isinstance(main_module.app, FastAPI)
    assert isinstance(main_module.app.state.settings, Settings)
    assert "/api/v1/delivery/tbank/notifications" in {
        route.path for route in main_module.app.routes
    }
    assert logging_bootstrap_calls == [None]
    assert tracing_bootstrap_calls == [
        (main_module.app, main_module.app.state.settings.observability)
    ]
    get_settings.cache_clear()


def test_app_created_with_provided_settings(monkeypatch) -> None:
    logging_bootstrap_calls: list[None] = []
    tracing_bootstrap_calls: list[tuple[FastAPI, object]] = []

    def fake_configure_logging() -> None:
        logging_bootstrap_calls.append(None)

    def fake_configure_tracing(app: FastAPI, observability: object) -> None:
        tracing_bootstrap_calls.append((app, observability))

    monkeypatch.setattr(logging_module, "configure_logging", fake_configure_logging)
    monkeypatch.setattr(tracing_module, "configure_tracing", fake_configure_tracing)
    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
    assert logging_bootstrap_calls == [None, None]
    assert tracing_bootstrap_calls == [
        (main_module.app, main_module.app.state.settings.observability),
        (instance, settings.observability),
    ]
    get_settings.cache_clear()