"""Integration tests for FastAPI application."""

import pytest
from fastapi.testclient import TestClient


@pytest.mark.integration
def test_home_page_serves_html(app_test_client: TestClient) -> None:
    """Test root endpoint returns HTML page."""
    response = app_test_client.get("/")
    assert response.status_code == 200
    assert "text/html" in response.headers["content-type"]


@pytest.mark.integration
def test_api_root_requires_auth(app_test_client: TestClient) -> None:
    """Test API root endpoint requires authentication."""
    response = app_test_client.get("/api/")
    assert response.status_code == 401
    assert response.json() == {"detail": "Not authenticated"}


@pytest.mark.integration
def test_api_root_with_auth(app_test_client: TestClient) -> None:
    """Test authenticated API root endpoint returns expected message."""
    # First login to get token
    login_response = app_test_client.post(
        "/api/login",
        json={"username": "admin", "password": "password"}
    )
    assert login_response.status_code == 200
    token = login_response.json()["access_token"]
    
    # Then access API root with token
    response = app_test_client.get(
        "/api/",
        headers={"Authorization": f"Bearer {token}"}
    )
    assert response.status_code == 200
    assert response.json() == {"message": "Hello World", "authenticated": True}


@pytest.mark.integration
def test_health_check(app_test_client: TestClient) -> None:
    """Test health check endpoint returns healthy status."""
    response = app_test_client.get("/health")
    assert response.status_code == 200
    assert response.json() == {"status": "healthy"}


@pytest.mark.integration
def test_readiness_check(app_test_client: TestClient) -> None:
    """Test readiness check endpoint returns ready status."""
    response = app_test_client.get("/ready")
    assert response.status_code == 200
    assert response.json() == {"status": "ready"}


@pytest.mark.integration
def test_openapi_docs_accessible(app_test_client: TestClient) -> None:
    """Test OpenAPI documentation is accessible."""
    response = app_test_client.get("/docs")
    assert response.status_code == 200


@pytest.mark.integration
def test_openapi_json_accessible(app_test_client: TestClient) -> None:
    """Test OpenAPI JSON schema is accessible."""
    response = app_test_client.get("/openapi.json")
    assert response.status_code == 200
    assert "openapi" in response.json()
    assert "info" in response.json()


@pytest.mark.integration
def test_nonexistent_endpoint_returns_404(app_test_client: TestClient) -> None:
    """Test requesting a non-existent endpoint returns 404."""
    response = app_test_client.get("/nonexistent")
    assert response.status_code == 404


@pytest.mark.integration
def test_root_endpoint_content_type(app_test_client: TestClient) -> None:
    """Test root endpoint returns HTML content type."""
    response = app_test_client.get("/")
    assert "text/html" in response.headers["content-type"]


@pytest.mark.integration
def test_api_root_endpoint_content_type(app_test_client: TestClient) -> None:
    """Test API root endpoint returns JSON content type."""
    # Login first to get token
    login_response = app_test_client.post(
        "/api/login",
        json={"username": "admin", "password": "password"}
    )
    token = login_response.json()["access_token"]
    
    response = app_test_client.get(
        "/api/",
        headers={"Authorization": f"Bearer {token}"}
    )
    assert response.headers["content-type"] == "application/json"


@pytest.mark.integration
def test_health_endpoint_content_type(app_test_client: TestClient) -> None:
    """Test health endpoint returns JSON content type."""
    response = app_test_client.get("/health")
    assert response.headers["content-type"] == "application/json"


@pytest.mark.integration
def test_ready_endpoint_content_type(app_test_client: TestClient) -> None:
    """Test readiness endpoint returns JSON content type."""
    response = app_test_client.get("/ready")
    assert response.headers["content-type"] == "application/json"


@pytest.mark.integration
def test_login_success(app_test_client: TestClient) -> None:
    """Test successful login returns access token."""
    response = app_test_client.post(
        "/api/login",
        json={"username": "admin", "password": "password"}
    )
    assert response.status_code == 200
    data = response.json()
    assert "access_token" in data
    assert data["token_type"] == "bearer"


@pytest.mark.integration
def test_login_invalid_credentials(app_test_client: TestClient) -> None:
    """Test login with invalid credentials returns 401."""
    response = app_test_client.post(
        "/api/login",
        json={"username": "admin", "password": "wrongpassword"}
    )
    assert response.status_code == 401
    assert response.json() == {"detail": "Invalid username or password"}


@pytest.mark.integration
def test_login_missing_fields(app_test_client: TestClient) -> None:
    """Test login with missing fields returns validation error."""
    response = app_test_client.post(
        "/api/login",
        json={"username": "admin"}
    )
    assert response.status_code == 422


@pytest.mark.integration
def test_logout(app_test_client: TestClient) -> None:
    """Test logout endpoint."""
    # Login first
    login_response = app_test_client.post(
        "/api/login",
        json={"username": "admin", "password": "password"}
    )
    token = login_response.json()["access_token"]
    
    # Logout
    response = app_test_client.post(
        "/api/logout",
        headers={"Authorization": f"Bearer {token}"}
    )
    assert response.status_code == 200
    assert response.json() == {"message": "Logged out successfully"}


@pytest.mark.integration
def test_info_endpoint(app_test_client: TestClient) -> None:
    """Test info endpoint returns installed features."""
    response = app_test_client.get("/info")
    assert response.status_code == 200
    data = response.json()
    assert "features" in data
    assert isinstance(data["features"], dict)
    assert "redis" in data["features"]
    assert "postgresql" in data["features"]