"""PopoutWindow replaces dock floating: an additional top-level window whose
edge band resizes, whose close only hides, and whose first show lands near
the cursor. DockTitleBar puts the pop-out button next to the close box."""

from PySide6.QtCore import QEvent, QPoint, QPointF, Qt
from PySide6.QtGui import QMouseEvent
from PySide6.QtWidgets import QDockWidget, QLabel

from aare.gui.widgets.popout_window import DockTitleBar, PopoutWindow


def _window(qtbot):
    w = PopoutWindow("test", QLabel("content"))
    qtbot.addWidget(w)
    w.resize(400, 300)
    return w


def test_edges_at(qtbot):
    w = _window(qtbot)
    band = PopoutWindow.RESIZE_MARGIN + PopoutWindow.OUTER_GRIP
    assert w._edges_at(QPoint(band - 1, 150)) == Qt.Edge.LeftEdge
    assert w._edges_at(QPoint(200, band - 1)) == Qt.Edge.TopEdge
    assert w._edges_at(QPoint(399, 299)) == (Qt.Edge.RightEdge | Qt.Edge.BottomEdge)
    assert w._edges_at(QPoint(200, 150)) == Qt.Edge(0)


def test_cursor_for(qtbot):
    w = _window(qtbot)
    assert w._cursor_for(Qt.Edge.LeftEdge) == Qt.CursorShape.SizeHorCursor
    assert w._cursor_for(Qt.Edge.BottomEdge) == Qt.CursorShape.SizeVerCursor
    assert w._cursor_for(Qt.Edge.LeftEdge | Qt.Edge.TopEdge) == Qt.CursorShape.SizeFDiagCursor
    assert w._cursor_for(Qt.Edge.RightEdge | Qt.Edge.TopEdge) == Qt.CursorShape.SizeBDiagCursor
    assert w._cursor_for(Qt.Edge(0)) is None


def test_close_hides_and_keeps_geometry(qtbot):
    w = _window(qtbot)
    w.show()
    qtbot.waitExposed(w)
    w.move(120, 130)
    geometry = w.geometry()
    w.close()
    assert not w.isVisible()
    # Reopen: the first-show placement must not run again (geometry kept).
    w.show()
    assert w._placed
    assert w.geometry() == geometry


def test_manual_resize_fallback(qtbot):
    w = _window(qtbot)
    w.show()
    qtbot.waitExposed(w)
    w.resize(400, 300)
    start = w.geometry()

    grab = QPointF(399.0, 299.0)  # bottom-right band
    press = QMouseEvent(
        QEvent.Type.MouseButtonPress,
        grab,
        w.mapToGlobal(grab.toPoint()).toPointF(),
        Qt.MouseButton.LeftButton,
        Qt.MouseButton.LeftButton,
        Qt.KeyboardModifier.NoModifier,
    )
    w.mousePressEvent(press)
    if not w._manual_edges:
        # The platform accepted startSystemResize; the manual path is not
        # reachable here, and the press must not have moved the window.
        assert w.geometry() == start
        return

    move_to = grab + QPointF(40.0, 25.0)
    move = QMouseEvent(
        QEvent.Type.MouseMove,
        move_to,
        w.mapToGlobal(move_to.toPoint()).toPointF(),
        Qt.MouseButton.NoButton,
        Qt.MouseButton.LeftButton,
        Qt.KeyboardModifier.NoModifier,
    )
    w.mouseMoveEvent(move)
    assert w.width() == start.width() + 40
    assert w.height() == start.height() + 25

    release = QMouseEvent(
        QEvent.Type.MouseButtonRelease,
        move_to,
        w.mapToGlobal(move_to.toPoint()).toPointF(),
        Qt.MouseButton.LeftButton,
        Qt.MouseButton.NoButton,
        Qt.KeyboardModifier.NoModifier,
    )
    w.mouseReleaseEvent(release)
    assert not w._manual_edges


def test_hover_sets_resize_cursor(qtbot):
    w = _window(qtbot)
    w.show()
    qtbot.waitExposed(w)

    def hover(pos):
        w.mouseMoveEvent(
            QMouseEvent(
                QEvent.Type.MouseMove,
                pos,
                w.mapToGlobal(pos.toPoint()).toPointF(),
                Qt.MouseButton.NoButton,
                Qt.MouseButton.NoButton,
                Qt.KeyboardModifier.NoModifier,
            )
        )

    hover(QPointF(2.0, 150.0))
    assert w.cursor().shape() == Qt.CursorShape.SizeHorCursor
    hover(QPointF(200.0, 150.0))
    assert w.cursor().shape() == Qt.CursorShape.ArrowCursor


def test_dock_title_bar_buttons(qtbot):
    dock = QDockWidget("Console Log")
    qtbot.addWidget(dock)
    opened = []
    bar = DockTitleBar(dock, on_popout=lambda: opened.append(True))
    dock.setTitleBarWidget(bar)
    dock.show()
    qtbot.waitExposed(dock)

    qtbot.mouseClick(bar.popout_button, Qt.MouseButton.LeftButton)
    assert opened == [True]
    assert dock.isVisible()


def test_manual_resize_from_top_left(qtbot):
    w = _window(qtbot)
    w.show()
    qtbot.waitExposed(w)
    w.resize(400, 300)
    # Drive the manual path directly; whether startSystemResize is available
    # is platform luck and the top/left arithmetic deserves coverage either way.
    w._manual_edges = Qt.Edge.LeftEdge | Qt.Edge.TopEdge
    w._press_global = w.mapToGlobal(QPoint(2, 2))
    w._press_geom = w.geometry()
    move_to = QPointF(2.0 + 30.0, 2.0 + 20.0)
    w.mouseMoveEvent(
        QMouseEvent(
            QEvent.Type.MouseMove,
            move_to,
            w.mapToGlobal(move_to.toPoint()).toPointF(),
            Qt.MouseButton.NoButton,
            Qt.MouseButton.LeftButton,
            Qt.KeyboardModifier.NoModifier,
        )
    )
    assert w.width() == 400 - 30
    assert w.height() == 300 - 20


def test_paint_border_knob(qtbot, monkeypatch):
    from PySide6.QtGui import QPixmap

    from aare.gui.widgets import popout_window as mod

    w = _window(qtbot)
    # Default FRAME_L1_WIDTH "0px": render must take the paint-nothing path.
    w.render(QPixmap(w.size()))
    # With a visible level-1 border the painter path runs.
    monkeypatch.setattr(mod, "FRAME_L1_WIDTH", "2px")
    w.render(QPixmap(w.size()))