pragma Singleton
pragma ComponentBehavior: Bound

import QtQuick
import Quickshell
import qs.Common
import qs.Services

Singleton {
    id: root

    property int refCount: 0
    readonly property bool watching: refCount > 0 || SettingsData.notificationDndWhileScreenSharing

    function addRef() {
        refCount++;
    }

    function removeRef() {
        refCount = Math.max(0, refCount - 1);
    }

    readonly property bool microphoneActive: {
        if (!watching || !AudioService.pipewireReady) {
            return false;
        }

        for (let i = 0; i < AudioService.pipewireNodes.length; i++) {
            const node = AudioService.pipewireNodes[i];
            if (!node) {
                continue;
            }

            if (node.properties?.["media.class"] === "Stream/Input/Audio") {
                if (!looksLikeSystemVirtualMic(node)) {
                    if (node.audio && node.audio.muted) {
                        return false;
                    }
                    return true;
                }
            }
        }
        return false;
    }

    readonly property bool cameraActive: {
        if (!watching || !AudioService.pipewireReady) {
            return false;
        }

        for (let i = 0; i < AudioService.pipewireNodes.length; i++) {
            const node = AudioService.pipewireNodes[i];
            if (!node || !node.ready || node.properties?.["media.role"] === "Screen") {
                continue;
            }

            if (node.properties && node.properties["media.class"] === "Stream/Input/Video") {
                if (node.properties["stream.is-live"] === "true") {
                    return true;
                }
            }
        }
        return false;
    }

    readonly property bool screensharingActive: {
        if (!watching) {
            return false;
        }

        if (CompositorService.isNiri && NiriService.hasActiveCast) {
            return true;
        }

        if (!AudioService.pipewireReady) {
            return false;
        }

        for (let i = 0; i < AudioService.pipewireNodes.length; i++) {
            const node = AudioService.pipewireNodes[i];
            if (!node || !node.ready) {
                continue;
            }

            if (AudioService.isPipewireVideoSource(node)) {
                if (looksLikeScreencast(node)) {
                    return true;
                }
            }

            if (node.properties && node.properties["media.class"] === "Stream/Output/Video") {
                if (looksLikeScreencast(node)) {
                    return true;
                }
            }

            if (node.properties && node.properties["media.class"] === "Stream/Input/Audio") {
                const mediaName = (node.properties["media.name"] || "").toLowerCase();
                const appName = (node.properties["application.name"] || "").toLowerCase();

                if (mediaName.includes("desktop") || appName.includes("screen") || appName === "obs") {
                    if (node.properties["stream.is-live"] === "true") {
                        if (node.audio && node.audio.muted) {
                            return false;
                        }
                        return true;
                    }
                }
            }
        }
        return false;
    }

    readonly property bool anyPrivacyActive: microphoneActive || cameraActive || screensharingActive

    function looksLikeSystemVirtualMic(node) {
        if (!node) {
            return false;
        }
        const name = (node.name || "").toLowerCase();
        const mediaName = (node.properties && node.properties["media.name"] || "").toLowerCase();
        const appName = (node.properties && node.properties["application.name"] || "").toLowerCase();
        const combined = name + " " + mediaName + " " + appName;
        return /cava|monitor|system/.test(combined);
    }

    function looksLikeScreencast(node) {
        if (!node) {
            return false;
        }
        const appName = (node.properties && node.properties["application.name"] || "").toLowerCase();
        const nodeName = (node.name || "").toLowerCase();
        const mediaName = (node.properties && node.properties["media.name"] || "").toLowerCase();
        const combined = appName + " " + nodeName + " " + mediaName;
        return /xdg-desktop-portal|xdpw|screencast|screen-cast|screen|gnome shell|kwin|obs|niri/.test(combined);
    }

    function screencastSourceIds() {
        const ids = [];

        if (CompositorService.isNiri) {
            for (const cast of NiriService.casts) {
                if (cast && cast.is_active) {
                    ids.push("niri:" + cast.stream_id);
                }
            }
        }

        if (!AudioService.pipewireReady) {
            return ids;
        }

        for (let i = 0; i < AudioService.pipewireNodes.length; i++) {
            const node = AudioService.pipewireNodes[i];
            if (!node || !node.ready) {
                continue;
            }

            const isVideoSource = node.properties?.["media.class"] === "Video/Source";
            const isVideoStream = node.properties && node.properties["media.class"] === "Stream/Output/Video";
            if ((isVideoSource || isVideoStream) && looksLikeScreencast(node)) {
                ids.push("pw:" + node.id);
            }
        }

        return ids.sort();
    }

    function getMicrophoneStatus() {
        return microphoneActive ? "active" : "inactive";
    }

    function getCameraStatus() {
        return cameraActive ? "active" : "inactive";
    }

    function getScreensharingStatus() {
        return screensharingActive ? "active" : "inactive";
    }

    function getPrivacySummary() {
        const active = [];
        if (microphoneActive) {
            active.push("microphone");
        }
        if (cameraActive) {
            active.push("camera");
        }
        if (screensharingActive) {
            active.push("screensharing");
        }

        return active.length > 0 ? `Privacy active: ${active.join(", ")}` : "No privacy concerns detected";
    }
}