"""Offscreen UI smoke tests: construction, layout adaptation, theme tokens."""

from __future__ import annotations

import pytest

from tests.conftest import visible_descendants

RESOLUTIONS = ((1280, 720), (1600, 900), (1920, 1080))


def _show(window, size):
    window.resize(*size)
    window.show()
    from PyQt5.QtWidgets import QApplication

    QApplication.processEvents()
    return window


@pytest.mark.parametrize(("theme", "sensor_type"), [
    ("dark", "box"),
    ("light", "box"),
    ("dark", "finger"),
    ("light", "finger"),
])
def test_window_builds_in_every_theme(make_window, theme, sensor_type):
    window = _show(make_window(theme=theme, sensor_type=sensor_type), (1400, 880))
    assert window.windowTitle()
    assert window.content_splitter.count() == 4


@pytest.mark.parametrize("size", RESOLUTIONS)
def test_panels_fit_within_window(make_window, size):
    window = _show(
        make_window(sensor_type="finger", show_cal_panel=True),
        size,
    )
    sizes = window.content_splitter.sizes()
    panels = [
        window.mesh3d_panel,
        window.arrow_panel,
        window.force_plots,
        window.cal_panel,
    ]
    for panel, width in zip(panels, sizes):
        assert panel.isVisible()
        assert width >= panel.minimumWidth(), (
            f"{panel.objectName() or type(panel).__name__} too narrow: {width}"
        )
    assert window.force_plots.width() >= window.force_plots.minimumWidth()
    assert window.arrow_panel.width() >= window.arrow_panel.minimumWidth()


@pytest.mark.parametrize("size", RESOLUTIONS)
def test_children_stay_inside_their_parent(make_window, size):
    window = _show(make_window(sensor_type="finger", show_cal_panel=True), size)
    oversize = []
    for child in visible_descendants(window):
        parent = child.parentWidget()
        if parent is None or not parent.isVisible():
            continue
        geometry = child.geometry()
        if geometry.width() > parent.width() + 1 or geometry.height() > parent.height() + 1:
            oversize.append(
                f"{type(child).__name__} {geometry.width()}x{geometry.height()}"
                f" > parent {parent.width()}x{parent.height()}"
            )
    assert not oversize, oversize


def test_theme_tokens_have_identical_keys():
    from orisys_app_shared.theme import build_qss, load_colors

    dark = set(load_colors("dark"))
    light = set(load_colors("light"))
    assert dark == light, {"dark_only": sorted(dark - light), "light_only": sorted(light - dark)}
    assert len(build_qss("dark")) > 1000
    assert len(build_qss("light")) > 1000


def test_arrow_canvas_differs_from_accent():
    """The pure-color arrow canvas must not collide with the accent pen color."""
    from orisys_app_shared.theme import load_colors

    for theme in ("dark", "light"):
        colors = load_colors(theme)
        assert colors["arrow_canvas"] != colors["accent"], theme


def test_disabled_buttons_use_muted_text_not_hover_background():
    from orisys_app_shared.theme import build_qss, load_colors

    for theme in ("dark", "light"):
        colors = load_colors(theme)
        qss = build_qss(theme)
        assert f"color: {colors['text_muted']}" in qss, theme
        # The old rule painted disabled buttons with the brighter hover color.
        assert f"background-color: {colors['button_hover']};\n    border-color: {colors['panel_border']}" not in qss


def test_splitter_sizes_round_trip_through_prefs(make_window):
    window = _show(make_window(), (1440, 880))
    window.content_splitter.setSizes([300, 420, 520, 0])
    window._persist_prefs()
    stored = window.prefs["splitter_sizes"]
    assert len(stored) == 4
    assert stored[2] > stored[0]


def test_status_chip_tracks_phase(make_window):
    window = _show(make_window(), (1400, 880))
    assert window._session_phase == "idle"
    window._set_phase("running")
    assert window.status_chip.text()
    assert "status_running" not in window.status_chip.text()
    window._set_phase("nonexistent-phase")
    assert window._session_phase == "idle"


def test_run_tooltip_explains_disabled_reason(make_window):
    window = _show(make_window(source_mode="video", video_path=""), (1400, 880))
    assert not window.toolbar.btn_run.isEnabled()
    assert window.toolbar.btn_run.toolTip()

    window.toolbar.set_video_path("C:/tmp/demo.mp4")
    window._update_run_enabled()
    assert window.toolbar.btn_run.isEnabled()


def test_toolbar_run_button_is_labelled(make_window):
    window = _show(make_window(), (1400, 880))
    label = window.toolbar.btn_run.text()
    assert label.strip()
    assert label != "▶"
    window.toolbar.set_run_checked(True)
    assert window.toolbar.btn_run.text() != label


def test_theme_switch_updates_panels(make_window):
    window = _show(make_window(), (1400, 880))
    window._set_theme("light")
    assert window._theme == "light"
    window._set_theme("dark")
    assert window._theme == "dark"


def test_cal_panel_records_and_lists_samples(make_window):
    window = _show(make_window(), (1400, 880))
    cal = window.cal_panel
    cal.set_running(True)
    assert cal.btn_record.isEnabled()
    assert cal.btn_record.text()

    from orisys_app_shared.force.calibration_io import CalSample

    cal._store.upsert("fn", CalSample(weight_n=1.0, raw_mean=9.7, n=120, std=0.02))
    cal._refresh_table()
    assert cal.table.rowCount() == 1
    assert not cal.empty_hint.isVisible()


def test_force_plots_render_demo_data(make_window):
    window = _show(make_window(), (1440, 880))
    for i in range(60):
        window.force_plots.push(i / 30.0, float(i), -1.0, 1.0, unit="N")
    from PyQt5.QtWidgets import QApplication

    QApplication.processEvents()
    assert window.force_plots.history.sample_count > 0
    assert all(label.text() for label in window.force_plots.value_labels)