// Copyright (C) 2026 Danilo M. <danix@danix.xyz>
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2 as
// published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.

import Quickshell
import Quickshell.Wayland
import QtQuick

Scope {
    id: root

    property bool open: false
    property string monitor: "DP-1"

    readonly property var screenObj:
        Quickshell.screens.find(s => s.name === root.monitor) ?? Quickshell.screens[0]

    function toggle() { root.open = !root.open; }
    function close() { root.open = false; }

    // A config with no visible window exits, reporting nothing. This 1x1
    // click-through window is what holds the shell open while the overlay
    // is hidden, which is almost always.
    PanelWindow {
        anchors { top: true; left: true }
        implicitWidth: 1
        implicitHeight: 1
        color: "transparent"
        exclusionMode: ExclusionMode.Ignore
        mask: Region {}
        WlrLayershell.keyboardFocus: WlrKeyboardFocus.None
    }

    LazyLoader {
        active: root.open

        PanelWindow {
            id: win
            screen: root.screenObj
            anchors { top: true; left: true; right: true; bottom: true }
            color: "transparent"
            exclusionMode: ExclusionMode.Ignore
            WlrLayershell.layer: WlrLayer.Overlay
            WlrLayershell.namespace: "window-switcher"
            WlrLayershell.keyboardFocus: WlrKeyboardFocus.Exclusive

            // Keys reach a focused item, not a window: Keys.onEscapePressed on
            // the PanelWindow above never fires. This item is what listens.
            Item {
                anchors.fill: parent
                focus: true

                Keys.onEscapePressed: {
                    console.log("SWITCHER escape");
                    root.close();
                }

                Rectangle {
                    anchors.fill: parent
                    color: Qt.rgba(Theme.base.r, Theme.base.g, Theme.base.b, 0.82)

                    MouseArea {
                        anchors.fill: parent
                        onClicked: root.close()
                    }

                    Text {
                        anchors.centerIn: parent
                        text: "press Escape"
                        color: Theme.text
                        font.family: Theme.fontFamily
                        font.pixelSize: 28
                    }
                }
            }
        }
    }
}