from __future__ import annotations

from pathlib import Path


ROOT = Path(__file__).resolve().parents[2]
WEB = ROOT / "apps" / "web-console"


def source(name: str) -> str:
    return (WEB / name).read_text(encoding="utf-8")


def section(content: str, start: str, end: str) -> str:
    start_index = content.index(start)
    end_index = content.index(end, start_index)
    return content[start_index:end_index]


def test_vehicle_twin_renders_on_demand_and_throttles_hotspot_layout() -> None:
    app = source("app.js")
    animation = section(app, "  function animate(timestamp = 0) {", "  setTwinSelection(")

    assert "function requestRender({ hotspots = true, settleFrames = 36 } = {})" in app
    assert "if (twinNeedsAnimation(twin)) queueTwinFrame();" in animation
    assert "window.requestAnimationFrame(animate)" not in animation
    assert "document.visibilityState !== \"visible\"" in app
    assert "new IntersectionObserver" in app
    assert "timestamp - twin.hotspotLastLayoutAt >= 100" in animation
    assert "hotspotMetrics: new Map()" in app
    assert "label?.offsetWidth" in app
    assert "renderer.setPixelRatio(Math.min(window.devicePixelRatio || 1, 1.5))" in app


def test_unchanged_vehicle_state_skips_dom_and_device_panel_rebuilds() -> None:
    app = source("app.js")
    console = source("console-v2.js")
    seat_render = section(app, "function renderSeatState(actuatorState) {", "\nfunction renderDomainState")

    assert "vehicleRenderFingerprint(mergedActuatorState)" in seat_render
    assert "renderFingerprint === state.seatRenderFingerprint" in seat_render
    assert "resetSeatState();" not in seat_render
    assert 'new CustomEvent("cognitive-agent:vehicle-state-rendered"' in app
    assert '"cognitive-agent:vehicle-state-rendered"' in console
    assert "observe(cabinBand" not in console
    assert "observe(stateBand" not in console
    assert 'if (!panelVisible("devices"))' in console
    assert "renderSyncedDevices({ force: true })" in console


def test_nfc_polling_keeps_its_frequency_without_rendering_hidden_surfaces() -> None:
    extension = source("self-extension.js")

    assert "const NFC_POLL_INTERVAL_MS = 700" in extension
    assert "currentNfcDialogFingerprint()" in extension
    assert "if (!force && !dialog.open)" in extension
    assert "renderFingerprint === nfcDialogFingerprint" in extension
    assert 'panel?.classList.contains("is-collapsed")' in extension
    assert "renderFingerprint === unifiedExtensionFingerprint" in extension
    assert '"cognitive-agent:side-panel-visibility"' in extension


def test_hidden_energy_monitor_samples_without_repainting() -> None:
    monitor = source("energy-monitor.js")

    assert "SAMPLE_INTERVAL_MS = 1000" in monitor
    assert "() => sampleNow({ render: monitor.open })" in monitor
    assert "if (next)" in monitor
    assert "renderMonitor();" in section(monitor, "  function setOpen(open) {", "\n  function selectSeries")


def test_high_frequency_fields_and_hotspots_do_not_add_compositor_blur() -> None:
    theme = source("codepen-glass-theme.css")
    field_rule = section(
        theme,
        "body.console-v2 :is(input, textarea, select),",
        "body.console-v2 :is(input, textarea, select):focus",
    )

    assert "backdrop-filter" not in field_rule
    assert "body.console-v2 .v2-twin-device-popover {" in theme
    shared_hotspot_rule = section(
        theme,
        "body.console-v2 .v2-twin-hotspot-label,",
        "body.console-v2 .v2-twin-device-popover {\n  -webkit-backdrop-filter",
    )
    assert "backdrop-filter" not in shared_hotspot_rule


def test_performance_assets_have_a_new_cache_generation() -> None:
    html = source("index.html")
    worker = source("service-worker.js")

    for asset in (
        "/app.js?v=dual-seat-147-video-media",
        "/console-v2.js?v=local-first-79-cinema-status",
        "/self-extension.js?v=nfc-persistent-57",
        "/energy-monitor.js?v=energy-monitor-5-performance",
    ):
        assert asset in html
        assert f'"{asset}"' in worker
    assert 'const CACHE_VERSION = "cognitive-agent-pad-v334-video-media"' in worker
    assert '"/codepen-glass-theme.css?v=creative-cloud-6-performance"' in worker