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pragma Singleton

import Quickshell
import Quickshell.Hyprland
import Quickshell.Io
import QtQuick

Singleton {
    id: root

    readonly property var toplevels: Hyprland.toplevels
    readonly property var workspaces: Hyprland.workspaces
    readonly property var monitors: Hyprland.monitors

    readonly property HyprlandToplevel activeToplevel: {
        const t = Hyprland.activeToplevel;
        if (t?.workspace?.focused || t?.workspace?.name.startsWith("special:"))
            return t;
        return null;
    }
    readonly property HyprlandWorkspace focusedWorkspace: Hyprland.focusedWorkspace
    readonly property HyprlandMonitor focusedMonitor: Hyprland.focusedMonitor

    readonly property int activeWsId: focusedWorkspace?.id ?? 1
    readonly property string kbLayout: kbMap.get(kbLayoutFull) ?? "??"
    property string kbLayoutFull: "?"
    property var kbMap: new Map()

    function dispatch(request: string): void {
        Hyprland.dispatch(request);
    }

    function monitorFor(screen: ShellScreen): HyprlandMonitor {
        return Hyprland.monitorFor(screen);
    }

    Connections {
        target: Hyprland

        function onRawEvent(event: HyprlandEvent): void {
            const n = event.name;
            if (n.endsWith("v2"))
                return;

            if (n === "activelayout") {
                root.kbLayoutFull = event.parse(2)[1];
            } else if (["workspace", "moveworkspace", "activespecial", "focusedmon"].includes(n)) {
                Hyprland.refreshWorkspaces();
                Hyprland.refreshMonitors();
            } else if (["openwindow", "closewindow", "movewindow"].includes(n)) {
                Hyprland.refreshToplevels();
                Hyprland.refreshWorkspaces();
            } else if (n.includes("mon")) {
                Hyprland.refreshMonitors();
            } else if (n.includes("workspace")) {
                Hyprland.refreshWorkspaces();
            } else if (n.includes("window") || n.includes("group") || ["pin", "fullscreen", "changefloatingmode", "minimize"].includes(n)) {
                Hyprland.refreshToplevels();
            }
        }
    }

    FileView {
        id: kbLayoutFile

        path: Quickshell.env("CAELESTIA_XKB_RULES_PATH") || "/usr/share/X11/xkb/rules/base.lst"
        onLoaded: {
            const lines = text().match(/! layout\n([\s\S]*?)\n\n/)[1].split("\n");
            for (const line of lines) {
                if (!line.trim() || line.trim().startsWith("!"))
                    continue;

                const match = line.match(/^\s*([a-z]{2,})\s+([a-zA-Z() ]+)$/);
                if (match)
                    root.kbMap.set(match[2], match[1]);
            }
        }
    }

    Process {
        running: true
        command: ["hyprctl", "-j", "devices"]
        stdout: StdioCollector {
            onStreamFinished: root.kbLayoutFull = JSON.parse(text).keyboards.find(k => k.main).active_keymap
        }
    }
}