#!/usr/bin/env python3
"""Dependency-free smoke run for the customer UI.

``pytest`` is the canonical runner (``apps/customer/tests``), but this script
needs nothing beyond the app's own runtime dependencies, so it can be used in
minimal environments:

    python tools/ui_check.py

It builds the real main window offscreen and asserts the layout, theming and
status-feedback invariants that the UI work depends on.
"""

from __future__ import annotations

import os
import sys
from pathlib import Path

APP_ROOT = Path(__file__).resolve().parents[1]
REPO_ROOT = APP_ROOT.parents[1]
for _path in (APP_ROOT / "src", REPO_ROOT / "shared" / "src"):
    if _path.is_dir() and str(_path) not in sys.path:
        sys.path.insert(0, str(_path))

os.environ.setdefault("QT_QPA_PLATFORM", "offscreen")
if sys.platform == "win32" and "QT_QPA_FONTDIR" not in os.environ:
    _fonts = Path(os.environ.get("WINDIR", r"C:\Windows")) / "Fonts"
    if _fonts.is_dir():
        os.environ["QT_QPA_FONTDIR"] = str(_fonts)
os.chdir(APP_ROOT)

FAILURES: list[str] = []
CHECKS = 0


def check(condition: bool, message: str) -> None:
    global CHECKS
    CHECKS += 1
    if not condition:
        FAILURES.append(message)


def section(name: str) -> None:
    print(f"\n== {name} ==")


def main() -> int:
    from PyQt5.QtWidgets import QApplication

    from orisys_app_shared.force.calibration_io import CalSample
    from orisys_app_shared.i18n import set_locale
    from orisys_app_shared.theme import build_qss, load_colors
    from orisys_customer.app_window import CustomerMainWindow

    app = QApplication.instance() or QApplication(sys.argv)
    set_locale("zh_CN")

    section("theme tokens")
    dark = set(load_colors("dark"))
    light = set(load_colors("light"))
    check(dark == light, f"token keys differ: {sorted(dark ^ light)}")
    for theme in ("dark", "light"):
        qss = build_qss(theme)
        check(len(qss) > 1000, f"{theme} qss suspiciously short")
        check(
            load_colors(theme)["arrow_canvas"] != load_colors(theme)["accent"],
            f"{theme}: arrow canvas collides with accent",
        )
        check("QProgressBar::chunk" in qss, f"{theme}: progress bar not styled")
        check("QHeaderView::section" in qss, f"{theme}: table header not styled")
        check("QRadioButton::indicator" in qss, f"{theme}: radio not styled")
        check("QScrollBar::handle" in qss, f"{theme}: scrollbar not styled")

    scene_count = 0
    for theme in ("dark", "light"):
        for sensor in ("box", "finger"):
            section(f"window {theme}/{sensor}")
            scene_count += 1
            app.setStyleSheet(build_qss(theme))
            window = CustomerMainWindow(
                prefs={
                    "language": "zh_CN",
                    "theme": theme,
                    "sensor_type": sensor,
                    "show_cal_panel": True,
                }
            )
            window.resize(1440, 880)
            window.show()
            app.processEvents()

            check(window.windowTitle() != "", "window title empty")
            check(
                window.status_chip.text() != "",
                "status chip has no phase text",
            )
            check(
                window.toolbar.btn_run.text().strip() not in ("", "▶"),
                f"run button is unlabelled: {window.toolbar.btn_run.text()!r}",
            )

            panels = [
                window.mesh3d_panel,
                window.arrow_panel,
                window.force_plots,
                window.cal_panel,
            ]
            for panel, width in zip(panels, window.content_splitter.sizes()):
                if panel.isVisible():
                    check(
                        width >= panel.minimumWidth(),
                        f"{type(panel).__name__} width {width} < min {panel.minimumWidth()}",
                    )

            check(
                window.force_plots.width() >= window.force_plots.minimumWidth(),
                "force plots narrower than its minimum",
            )

            # value cards must keep their text visible
            for card, label in zip(
                window.force_plots.value_cards, window.force_plots.value_labels
            ):
                check(
                    label.height() >= label.fontMetrics().height(),
                    "value card text is clipped",
                )
                check(label.text() != "", "value card is empty")

            # demo data flows through the plots and the calibration table
            for i in range(90):
                window.force_plots.push(i / 30.0, float(i % 7), -1.0, 1.0, unit="N")
            app.processEvents()
            check(
                window.force_plots.history.sample_count > 0,
                "plots did not accept samples",
            )

            window.cal_panel.set_running(True)
            check(window.cal_panel.btn_record.isEnabled(), "record button stays disabled")
            window.cal_panel._store.upsert(
                "fn", CalSample(weight_n=1.0, raw_mean=9.7, n=120, std=0.02)
            )
            window.cal_panel._refresh_table()
            check(window.cal_panel.table.rowCount() == 1, "calibration row missing")
            check(
                not window.cal_panel.empty_hint.isVisible(),
                "empty hint still visible with rows",
            )

            window._set_phase("running")
            check("status_running" not in window.status_chip.text(), "chip not localized")
            window._set_theme("light" if theme == "dark" else "dark")
            app.processEvents()

            window._persist_prefs()
            check(
                len(window.prefs.get("splitter_sizes", [])) == 4,
                "splitter sizes not persisted",
            )
            window.close()
            app.processEvents()

    section("small window")
    app.setStyleSheet(build_qss("dark"))
    window = CustomerMainWindow(
        prefs={
            "language": "en_US",
            "theme": "dark",
            "sensor_type": "finger",
            "show_cal_panel": True,
            "show_finger_3d": True,
        }
    )
    window.resize(1280, 720)
    window.show()
    app.processEvents()
    for panel, width in zip(
        [
            window.mesh3d_panel,
            window.arrow_panel,
            window.force_plots,
            window.cal_panel,
        ],
        window.content_splitter.sizes(),
    ):
        if panel.isVisible():
            check(width >= panel.minimumWidth(), f"1280px: {type(panel).__name__} squeezed")
    oversize = []
    for child in window.findChildren(object):
        if not hasattr(child, "isVisible") or not child.isVisible():
            continue
        if not hasattr(child, "geometry"):
            continue
        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(type(child).__name__)
    check(not oversize, f"widgets overflow their parent: {oversize}")
    window.close()
    app.processEvents()

    print(f"\nscenes: {scene_count}   checks: {CHECKS}   failures: {len(FAILURES)}")
    for failure in FAILURES:
        print(f"  FAIL: {failure}")
    return 1 if FAILURES else 0


if __name__ == "__main__":
    raise SystemExit(main())