"""Structural tests for the snippets blueprint — registration + handler/service
contracts. Full HTTP integration needs a live DB + auth the unit env lacks."""
import inspect


def test_snippets_blueprint_registered():
    from scribe.routes.snippets import snippets_bp
    assert snippets_bp.name == "snippets"
    assert snippets_bp.url_prefix == "/api/snippets"


def test_snippets_blueprint_registered_in_app():
    from scribe.app import create_app
    app = create_app()
    assert "snippets" in app.blueprints


def test_snippet_handlers_callable():
    from scribe.routes import snippets as routes
    for name in (
        "list_snippets_route", "create_snippet_route", "get_snippet_route",
        "update_snippet_route", "delete_snippet_route",
    ):
        assert callable(getattr(routes, name))


def test_service_functions_take_user_id():
    """Routes must call snippet services with user_id — verify the contract."""
    from scribe.services import snippets as svc
    for fn_name in ("create_snippet", "list_snippets", "get_snippet", "update_snippet"):
        fn = getattr(svc, fn_name)
        assert callable(fn)
        assert "user_id" in inspect.signature(fn).parameters


def test_update_field_map_matches_service_kwargs():
    """Every field the PATCH route forwards must be a real update_snippet kwarg
    (rule #33 interface-contract parity)."""
    from scribe.routes import snippets as routes
    from scribe.services import snippets as svc
    params = inspect.signature(svc.update_snippet).parameters
    for field in routes._STR_FIELDS:
        assert field in params, f"update_snippet has no '{field}' kwarg"
    assert "tags" in params
    assert "project_id" in params