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/*
 * Copyright 2015 Canonical Ltd.
 * Copyright 2021-2023 Robert Tari
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 3.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * Authors:
 *      Charles Kerr <charles.kerr@canonical.com>
 *      Robert Tari <robert@tari.in>
 */

using Notify;

public class IndicatorSound.InfoNotification: Notification
{
    private string sReaderSchema = "org.gnome.desktop.a11y.applications";
    private string sReaderKey = "screen-reader-enabled";
    private bool bHints = false;

    protected override Notify.Notification create_notification ()
    {
        string sUser = GLib.Environment.get_user_name ();
        this.bHints = notify_server_supports ("x-lomiri-private-synchronous");

        if (sUser == "lightdm")
        {
            this.sReaderSchema = "org.ArcticaProject.arctica-greeter";
            this.sReaderKey = "screen-reader";
        }

        return new Notify.Notification (_("Volume"), "", "audio-volume-muted");
    }


    public void show (VolumeControl.ActiveOutput active_output,
                      double volume,
                      bool is_high_volume) {

        /* Determine Label */
        string volume_label = get_notification_label (active_output);

        /* Choose an icon */
        unowned string icon = get_volume_notification_icon (active_output, volume, is_high_volume);

        /* Reset the notification */
        var n = _notification;

        int32 nValue = ((int32)((volume * 100.0) + 0.5)).clamp(0, 100);

        if (!this.bHints)
        {
            volume_label += "\n";
            SettingsSchemaSource pSource = SettingsSchemaSource.get_default ();
            SettingsSchema pSchema = pSource.lookup (this.sReaderSchema, false);
            bool bOrcaActive = false;

            if (pSchema != null)
            {
                Settings pSettings = new Settings (this.sReaderSchema);
                bOrcaActive = pSettings.get_boolean (this.sReaderKey);
            }

            if (bOrcaActive)
            {
                string sValue = nValue.to_string ();
                volume_label += sValue + "%";
            }
            else
            {
                uint nChars = ((int32)((volume * 20) + 0.5)).clamp(0, 20);

                for (uint nChar = 0; nChar < nChars; nChar++)
                {
                    volume_label += "◼";
                }
            }
        }

        n.update (_("Volume"), volume_label, icon);
        n.clear_hints();
        n.set_hint ("x-lomiri-non-shaped-icon", "true");
        n.set_hint ("x-lomiri-private-synchronous", "true");
        n.set_hint ("x-lomiri-value-bar-tint", is_high_volume ? "true" : "false");
        n.set_hint ("value", nValue);

        show_notification ();
    }

    private static unowned string get_notification_label (VolumeControl.ActiveOutput active_output) {

        switch (active_output) {
            case VolumeControl.ActiveOutput.SPEAKERS:
                return _("Speakers");
            case VolumeControl.ActiveOutput.HEADPHONES:
                return _("Headphones");
            case VolumeControl.ActiveOutput.BLUETOOTH_HEADPHONES:
                return _("Bluetooth headphones");
            case VolumeControl.ActiveOutput.BLUETOOTH_SPEAKER:
                return _("Bluetooth speaker");
            case VolumeControl.ActiveOutput.USB_SPEAKER:
                return _("Usb speaker");
            case VolumeControl.ActiveOutput.USB_HEADPHONES:
                return _("Usb headphones");
            case VolumeControl.ActiveOutput.HDMI_SPEAKER:
                return _("HDMI speaker");
            case VolumeControl.ActiveOutput.HDMI_HEADPHONES:
                return _("HDMI headphones");
            default:
                return "";
        }
    }

    private static unowned string get_volume_notification_icon (VolumeControl.ActiveOutput active_output,
                                                                double volume,
                                                                bool is_high_volume) {

        if (!is_high_volume)
            return get_volume_icon (active_output, volume);

        switch (active_output) {
            case VolumeControl.ActiveOutput.SPEAKERS:
            case VolumeControl.ActiveOutput.HEADPHONES:
            case VolumeControl.ActiveOutput.BLUETOOTH_HEADPHONES:
            case VolumeControl.ActiveOutput.BLUETOOTH_SPEAKER:
            case VolumeControl.ActiveOutput.USB_SPEAKER:
            case VolumeControl.ActiveOutput.USB_HEADPHONES:
            case VolumeControl.ActiveOutput.HDMI_SPEAKER:
            case VolumeControl.ActiveOutput.HDMI_HEADPHONES:
                return "audio-volume-high";

            default:
                return "";
        }
    }

    private static unowned string get_volume_icon (VolumeControl.ActiveOutput active_output,
                                                   double volume)
    {
        switch (active_output) {
            case VolumeControl.ActiveOutput.SPEAKERS:
            case VolumeControl.ActiveOutput.HEADPHONES:
            case VolumeControl.ActiveOutput.BLUETOOTH_HEADPHONES:
            case VolumeControl.ActiveOutput.BLUETOOTH_SPEAKER:
            case VolumeControl.ActiveOutput.USB_SPEAKER:
            case VolumeControl.ActiveOutput.USB_HEADPHONES:
            case VolumeControl.ActiveOutput.HDMI_SPEAKER:
            case VolumeControl.ActiveOutput.HDMI_HEADPHONES:
                if (volume <= 0.0)
                    return "audio-volume-muted";
                if (volume <= 0.3)
                    return "audio-volume-low";
                if (volume <= 0.7)
                    return "audio-volume-medium";
                return "audio-volume-high";

            default:
                return "";
        }
    }
}