pragma Singleton
pragma ComponentBehavior: Bound

import QtQuick
import Quickshell
import Quickshell.Bluetooth

Singleton {
    id: root

    readonly property BluetoothAdapter adapter: Bluetooth.defaultAdapter
    readonly property bool available: adapter !== null
    readonly property bool enabled: (adapter && adapter.enabled) ?? false
    readonly property bool discovering: (adapter && adapter.discovering) ?? false
    readonly property var devices: adapter ? adapter.devices : null
    readonly property var pairedDevices: {
        if (!adapter || !adapter.devices)
            return [];

        return adapter.devices.values.filter((dev) => {
            return dev && (dev.paired || dev.trusted);
        });
    }
    readonly property var allDevicesWithBattery: {
        if (!adapter || !adapter.devices)
            return [];

        return adapter.devices.values.filter((dev) => {
            return dev && dev.batteryAvailable && dev.battery > 0;
        });
    }

    function sortDevices(devices) {
        return devices.sort((a, b) => {
            var aName = a.name || a.deviceName || "";
            var bName = b.name || b.deviceName || "";
            
            var aHasRealName = aName.includes(" ") && aName.length > 3;
            var bHasRealName = bName.includes(" ") && bName.length > 3;
            
            if (aHasRealName && !bHasRealName) return -1;
            if (!aHasRealName && bHasRealName) return 1;
            
            var aSignal = (a.signalStrength !== undefined && a.signalStrength > 0) ? a.signalStrength : 0;
            var bSignal = (b.signalStrength !== undefined && b.signalStrength > 0) ? b.signalStrength : 0;
            return bSignal - aSignal;
        });
    }

    function getDeviceIcon(device) {
        if (!device)
            return "bluetooth";

        var name = (device.name || device.deviceName || "").toLowerCase();
        var icon = (device.icon || "").toLowerCase();
        if (icon.includes("headset") || icon.includes("audio") || name.includes("headphone") || name.includes("airpod") || name.includes("headset") || name.includes("arctis"))
            return "headset";

        if (icon.includes("mouse") || name.includes("mouse"))
            return "mouse";

        if (icon.includes("keyboard") || name.includes("keyboard"))
            return "keyboard";

        if (icon.includes("phone") || name.includes("phone") || name.includes("iphone") || name.includes("android") || name.includes("samsung"))
            return "smartphone";

        if (icon.includes("watch") || name.includes("watch"))
            return "watch";

        if (icon.includes("speaker") || name.includes("speaker"))
            return "speaker";

        if (icon.includes("display") || name.includes("tv"))
            return "tv";

        return "bluetooth";
    }

    function getDeviceType(device) {
        if (!device)
            return "bluetooth";

        var name = (device.name || device.deviceName || "").toLowerCase();
        var icon = (device.icon || "").toLowerCase();
        if (icon.includes("headset") || icon.includes("audio") || name.includes("headphone") || name.includes("airpod") || name.includes("headset") || name.includes("arctis"))
            return "headset";

        if (icon.includes("mouse") || name.includes("mouse"))
            return "mouse";

        if (icon.includes("keyboard") || name.includes("keyboard"))
            return "keyboard";

        if (icon.includes("phone") || name.includes("phone") || name.includes("iphone") || name.includes("android") || name.includes("samsung"))
            return "phone";

        if (icon.includes("watch") || name.includes("watch"))
            return "watch";

        if (icon.includes("speaker") || name.includes("speaker"))
            return "speaker";

        if (icon.includes("display") || name.includes("tv"))
            return "tv";

        return "bluetooth";
    }

    function canConnect(device) {
        if (!device)
            return false;

        return !device.paired && !device.pairing && !device.blocked;
    }

    function debugDevice(device) {
        console.log("Device:", device.name, "paired:", device.paired, "connected:", device.connected, "signalStrength:", device.signalStrength);
    }


    function getSignalStrength(device) {
        if (!device || device.signalStrength === undefined || device.signalStrength <= 0)
            return "Unknown";

        var signal = device.signalStrength;
        if (signal >= 80)
            return "Excellent";

        if (signal >= 60)
            return "Good";

        if (signal >= 40)
            return "Fair";

        if (signal >= 20)
            return "Poor";

        return "Very Poor";
    }

    function getSignalIcon(device) {
        if (!device || device.signalStrength === undefined || device.signalStrength <= 0)
            return "signal_cellular_null";

        var signal = device.signalStrength;
        if (signal >= 80)
            return "signal_cellular_4_bar";

        if (signal >= 60)
            return "signal_cellular_3_bar";

        if (signal >= 40)
            return "signal_cellular_2_bar";

        if (signal >= 20)
            return "signal_cellular_1_bar";

        return "signal_cellular_0_bar";
    }
    
    function isDeviceBusy(device) {
        if (!device) return false;
        return device.pairing || device.state === BluetoothDeviceState.Disconnecting || device.state === BluetoothDeviceState.Connecting;
    }
    
    function connectDeviceWithTrust(device) {
        if (!device) return;
        
        device.trusted = true;
        device.connect();
    }



}