from pathlib import Path
from tests.frontend_contract import assert_calls, assert_mentions, assert_wired, read_map_workspace


ROOT = Path(__file__).resolve().parents[2]


def read(path: str) -> str:
    return (ROOT / path).read_text(encoding="utf-8")


def test_work_area_change_clears_stale_spatial_results_before_switching_area() -> None:
    workspace = read_map_workspace()

    assert "const handleSelectMapArea = (areaId: string) => {" in workspace
    assert "clearAreaSelection()\n    onSelectMapArea(areaId)" in workspace
    # One call site is a formatting rule; the contract is that the area
    # selector routes through the handler that clears the drawn selection.
    assert_calls(workspace, "handleSelectMapArea", first_argument="event.target.value")


def test_cancelled_selection_requests_cannot_restore_stale_results() -> None:
    selection_hook = read("frontend/src/hooks/useMapSelectionExtract.ts")
    themes_hook = read("frontend/src/hooks/useMapThemeSelectionInsights.ts")

    assert "const requestSequence = useRef(0)" in selection_hook
    assert "requestSequence.current += 1\n    setMapSelectionBbox(null)" in selection_hook
    assert "if (requestSequence.current !== sequence)" in selection_hook
    assert "const requestSequence = useRef(0)" in themes_hook
    assert "requestSequence.current += 1\n    setThemeInsights([])" in themes_hook
    assert "if (requestSequence.current !== sequence)" in themes_hook


def test_viewport_status_uses_end_user_map_language() -> None:
    hook = read("frontend/src/hooks/useViewportVectorLayer.ts")

    assert "load buildings from PostGIS" not in hook
    assert "Zichtbare kaartobjecten laden..." in hook
    assert "kaartobjecten getoond" in hook
    assert "PostGIS" not in hook