"""Tests for API main module."""

import pytest
from fastapi import FastAPI
from fastapi.testclient import TestClient

from notebooklm_agent.api.main import app, create_application


@pytest.mark.unit
class TestCreateApplication:
    """Test suite for create_application function."""

    def test_returns_fastapi_instance(self):
        """Should return FastAPI application instance."""
        # Act
        application = create_application()

        # Assert
        assert isinstance(application, FastAPI)
        assert application.title == "NotebookLM Agent API"
        assert application.version == "0.1.0"

    def test_includes_health_router(self):
        """Should include health check router."""
        # Act
        application = create_application()

        # Assert
        routes = [route.path for route in application.routes]
        assert any("/health" in route for route in routes)


@pytest.mark.integration
class TestRootEndpoint:
    """Test suite for root endpoint."""

    def test_root_returns_api_info(self):
        """Should return API information."""
        # Arrange
        client = TestClient(app)

        # Act
        response = client.get("/")

        # Assert
        assert response.status_code == 200
        data = response.json()
        assert data["name"] == "NotebookLM Agent API"
        assert data["version"] == "0.1.0"
        assert "/docs" in data["documentation"]