import pytest
from aarecommon.math.coordinate import Coordinate, SmargonCoordinate
from aarecommon.math.diffraction_geometry import DiffractionGeometry
from aarecommon.math.sample_geometry import SampleGeometryModel
from aarecommon.models.models import (
    BeamlineStateEnum,
    BeamlineStatus,
    CrystalSize,
    DAQStatusModel,
    SampleCameraSettings,
    SessionsStateEnum,
    SessionStatus,
)
from PySide6.QtCore import QEvent, QPoint, QPointF, Qt
from PySide6.QtGui import QMouseEvent

from aare.gui.scan_logic.raster_grid_manager import RasterGridManager
from aare.gui.styles import THEME_SUNRISE, THEME_SUNSET
from aare.gui.widgets.camera_image import SampleCameraImageLabel


def _geom() -> SampleGeometryModel:
    return SampleGeometryModel(
        beam_location_pxl=Coordinate(x=1000, y=1000),
        pixel_in_mm=0.001,
        aerotech=Coordinate(),
        aerotech_meas=Coordinate(),
        smargon=SmargonCoordinate(sh_mm=Coordinate(), phi_deg=0, chi_deg=0),
        omega_deg=0,
        beam_size_mm=Coordinate(x=0.01, y=0.01),
    )


def _status(*, busy: bool, session: SessionsStateEnum) -> DAQStatusModel:
    return DAQStatusModel(
        geom=_geom(),
        diffraction=DiffractionGeometry(
            energy_keV=12.4,
            dtz_mm=100.0,
            detector_size_pxl=(1553, 1630),
            pixel_size_mm=0.150,
            beam_center_pxl=(750.0, 750.0),
            detector_description="PILATUS 4",
            detector_serial_number="1",
            poni_rot1_rad=0.0,
            poni_rot2_rad=0.0,
        ),
        bl=BeamlineStatus(
            name="SIMULATED",
            ring_current_mA=400.0,
            front_light=50.0,
            back_light=50.0,
            cryojet_K=100.0,
            shutter_open=False,
            exp_shutter_open=False,
            flux_ph_s=1e12,
            sample_camera=SampleCameraSettings(gain=1.0, exposure=0.02),
            transmission=1.0,
            zoom=1.0,
            commissioning_mode=False,
            dtz_min=120.0,
            dtz_max=1600.0,
        ),
        state=BeamlineStateEnum.SampleAlignment,
        busy=busy,
        session=SessionStatus(session=session, current_pgroup="p123", staff=True),
        crystal_size=CrystalSize(x=0, y=0, z=0),
    )


def _mouse_move(widget, pos: QPoint) -> None:
    # qtbot.mouseMove drives the real cursor, which the offscreen platform
    # ignores — deliver the move event directly instead.
    event = QMouseEvent(
        QEvent.Type.MouseMove,
        QPointF(pos),
        QPointF(widget.mapToGlobal(pos)),
        Qt.MouseButton.NoButton,
        Qt.MouseButton.NoButton,
        Qt.KeyboardModifier.NoModifier,
    )
    widget.mouseMoveEvent(event)


@pytest.fixture
def camera(qtbot):
    geom = _geom()
    label = SampleCameraImageLabel(geom=geom, raster=RasterGridManager(geom), default_image=None)
    qtbot.addWidget(label)
    label.resize(800, 600)
    return label


def test_help_badge_click_toggles_cheatsheet(camera, qtbot):
    camera.grab()  # paint records the collapsed "?" badge hit rect
    badge = camera._help_hit_rect
    assert badge is not None
    assert not camera._help_expanded

    qtbot.mouseClick(camera.viewport(), Qt.MouseButton.LeftButton, pos=badge.center().toPoint())
    assert camera._help_expanded

    camera.grab()  # expanded overlay: hit rect grows to the whole cheatsheet box
    box = camera._help_hit_rect
    assert box is not None
    assert box.height() > badge.height()

    qtbot.mouseClick(camera.viewport(), Qt.MouseButton.LeftButton, pos=box.center().toPoint())
    assert not camera._help_expanded


def test_camera_error_message_rewords_and_draws(camera):
    camera.set_camera_available(False)
    camera.set_camera_error_message("Sample camera feed unavailable: cable unplugged")
    assert camera._camera_error_message == (
        "Sample camera feed unavailable because cable unplugged"
    )
    camera.grab()  # exercises the bottom-center unavailable overlay text path

    camera.set_camera_available(True)
    assert camera._camera_error_message is None


def test_busy_warning_is_not_a_click_target(camera):
    camera.update_daq_status(_status(busy=True, session=SessionsStateEnum.OwnedByYou))
    style = camera._busy_overlay_style
    assert style is not None
    assert style.text == "BEAMLINE BUSY"
    camera.grab()
    assert camera._session_badge_rect is None


def test_vacant_badge_hover_click_and_theme(camera, qtbot):
    camera.update_daq_status(_status(busy=False, session=SessionsStateEnum.Vacant))
    style = camera._busy_overlay_style
    assert style is not None
    assert style.text == "In viewing mode"
    assert style.subtext  # the grab-baton hint line

    camera.grab()  # paint records the badge rect
    badge = camera._session_badge_rect
    assert badge is not None

    _mouse_move(camera, badge.center())
    assert camera._session_badge_hovered
    camera.grab()  # hover fill, light-theme darken branch

    camera.set_theme(THEME_SUNSET)
    assert camera._dark_theme
    camera.grab()  # hover fill, sunset brighten branch
    camera.set_theme(THEME_SUNRISE)
    assert not camera._dark_theme

    _mouse_move(camera, QPoint(1, 1))
    assert not camera._session_badge_hovered

    _mouse_move(camera, badge.center())
    camera.leaveEvent(QEvent(QEvent.Type.Leave))
    assert not camera._session_badge_hovered

    with qtbot.waitSignal(camera.session_badge_clicked, timeout=1000):
        qtbot.mouseClick(camera.viewport(), Qt.MouseButton.LeftButton, pos=badge.center())