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/*
 * Copyright 2014 Canonical Ltd.
 * Copyright 2021 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:
 *      Ted Gould <ted@canonical.com>
 *      Robert Tari <robert@tari.in>
 */

public class AccountsServiceUser : Object {
    Act.UserManager accounts_manager = Act.UserManager.get_default();
    Act.User? user = null;
    AccountsServiceSoundSettings? proxy = null;
#if HAS_LOMIRI_SCHEMAS
    AccountsServicePrivacySettings? privacyproxy = null;
    AccountsServiceSystemSoundSettings? syssoundproxy = null;
#endif
    uint timer = 0;
    MediaPlayer? _player = null;
    GreeterBroadcast? greeter = null;

    public bool showDataOnGreeter { get; set; }

    bool _silentMode = false;
    public bool silentMode {
        get {
            return _silentMode;
        }
        set {
            _silentMode = value;
#if HAS_LOMIRI_SCHEMAS
            if (syssoundproxy != null)
                syssoundproxy.silent_mode = value;
#endif
        }
    }

    public MediaPlayer? player {
        set {
            this._player = value;
            debug("New player: %s", this._player != null ? this._player.name : "Cleared");

            /* No proxy, no settings to set */
            if (this.proxy == null) {
                debug("Nothing written to Accounts Service, waiting on proxy");
                return;
            }

            /* Always reset the timer */
            if (this.timer != 0) {
                GLib.Source.remove(this.timer);
                this.timer = 0;
            }

            if (this._player == null) {
                debug("Clearing player data in accounts service");

                /* Clear it */
                this.proxy.player_name = "";
                this.proxy.timestamp = 0;
                this.proxy.title = "";
                this.proxy.artist = "";
                this.proxy.album = "";
                this.proxy.art_url = "";

                var icon = new ThemedIcon.with_default_fallbacks ("application-default-icon");
                this.proxy.player_icon = icon.serialize();
            } else {
                this.proxy.timestamp = GLib.get_monotonic_time();
                this.proxy.player_name = this._player.name;

                /* Serialize the icon if it exits, if it doesn't or errors then
                   we need to use the application default icon */
                GLib.Variant? icon_serialization = null;
                if (this._player.icon != null)
                    icon_serialization = this._player.icon.serialize();
                if (icon_serialization == null) {
                    var icon = new ThemedIcon.with_default_fallbacks ("application-default-icon");
                    icon_serialization = icon.serialize();
                }
                this.proxy.player_icon = icon_serialization;

                /* Set state of the player */
                this.proxy.running = this._player.is_running;
                this.proxy.state = this._player.state;

                if (this._player.current_track != null) {
                    this.proxy.title = this._player.current_track.title;
                    this.proxy.artist = this._player.current_track.artist;
                    this.proxy.album = this._player.current_track.album;
                    this.proxy.art_url = this._player.current_track.art_url;
                } else {
                    this.proxy.title = "";
                    this.proxy.artist = "";
                    this.proxy.album = "";
                    this.proxy.art_url = "";
                }

                this.timer = GLib.Timeout.add_seconds(5 * 60, () => {
                    debug("Writing timestamp");
                    this.proxy.timestamp = GLib.get_monotonic_time();
                    return true;
                });
            }
        }
        get {
            return this._player;
        }
    }

    public AccountsServiceUser () {
        user = accounts_manager.get_user(GLib.Environment.get_user_name());
        user.notify["is-loaded"].connect(() => user_loaded_changed());
        user_loaded_changed();

        Bus.get_proxy.begin<GreeterBroadcast> (
            BusType.SYSTEM,
            "org.ayatana.Desktop.Greeter.Broadcast",
            "/org/ayatana/Desktop/Greeter/Broadcast",
            DBusProxyFlags.NONE,
            null,
            greeter_proxy_new);
    }

    void user_loaded_changed () {
        debug("User loaded changed");

        this.proxy = null;

        if (this.user.is_loaded) {
            Bus.get_proxy.begin<AccountsServiceSoundSettings> (
                BusType.SYSTEM,
                "org.freedesktop.Accounts",
                user.get_object_path(),
                DBusProxyFlags.GET_INVALIDATED_PROPERTIES,
                null,
                new_sound_proxy);
#if HAS_LOMIRI_SCHEMAS
            Bus.get_proxy.begin<AccountsServicePrivacySettings> (
                BusType.SYSTEM,
                "org.freedesktop.Accounts",
                user.get_object_path(),
                DBusProxyFlags.GET_INVALIDATED_PROPERTIES,
                null,
                new_privacy_proxy);
#endif

#if HAS_LOMIRI_SCHEMAS
            Bus.get_proxy.begin<AccountsServiceSystemSoundSettings> (
                BusType.SYSTEM,
                "org.freedesktop.Accounts",
                user.get_object_path(),
                DBusProxyFlags.GET_INVALIDATED_PROPERTIES,
                null,
                new_system_sound_proxy);
#endif
        }
    }

    ~AccountsServiceUser () {
        debug("Account Service Object Finalizing");
        this.player = null;

        if (this.timer != 0) {
            GLib.Source.remove(this.timer);
            this.timer = 0;
        }
    }

    void new_sound_proxy (GLib.Object? obj, AsyncResult res) {
        try {
            this.proxy = Bus.get_proxy.end (res);
            this.player = _player;
        } catch (Error e) {
            this.proxy = null;
            warning("Unable to get proxy to user sound settings: %s", e.message);
        }
    }

#if HAS_LOMIRI_SCHEMAS
    void new_privacy_proxy (GLib.Object? obj, AsyncResult res) {
        try {
            this.privacyproxy = Bus.get_proxy.end (res);
            var pDBusProxy = this.privacyproxy as DBusProxy;

            if (pDBusProxy != null)
            {
                pDBusProxy.g_properties_changed.connect((proxy, changed, invalid) => {
                    var welcomeval = changed.lookup_value("MessagesWelcomeScreen", VariantType.BOOLEAN);
                    if (welcomeval != null) {
                        debug("Messages on welcome screen changed");
                        this.showDataOnGreeter = welcomeval.get_boolean();
                    }
                });
            }

            this.showDataOnGreeter = this.privacyproxy.messages_welcome_screen;
        } catch (Error e) {
            this.privacyproxy = null;
            warning("Unable to get proxy to user privacy settings: %s", e.message);
        }
    }
#endif

#if HAS_LOMIRI_SCHEMAS
    void new_system_sound_proxy (GLib.Object? obj, AsyncResult res) {
        try {
            this.syssoundproxy = Bus.get_proxy.end (res);
            var pDBusProxy = this.syssoundproxy as DBusProxy;

            if (pDBusProxy != null)
            {
                pDBusProxy.g_properties_changed.connect((proxy, changed, invalid) => {
                    var silentvar = changed.lookup_value("SilentMode", VariantType.BOOLEAN);
                    if (silentvar != null) {
                        debug("Silent Mode changed");
                        this._silentMode = silentvar.get_boolean();
                        this.notify_property("silentMode");
                    }
                });
            }

            this._silentMode = this.syssoundproxy.silent_mode;
            this.notify_property("silentMode");
        } catch (Error e) {
            this.syssoundproxy = null;
            warning("Unable to get proxy to system sound settings: %s", e.message);
        }
    }
#endif

    void greeter_proxy_new (GLib.Object? obj, AsyncResult res) {
        try {
            this.greeter = Bus.get_proxy.end (res);

            this.greeter.SoundPlayPause.connect((username) => {
                if (username != GLib.Environment.get_user_name())
                    return;
                if (this._player == null)
                    return;
                this._player.play_pause();
            });

            this.greeter.SoundNext.connect((username) => {
                if (username != GLib.Environment.get_user_name())
                    return;
                if (this._player == null)
                    return;
                this._player.next();
            });

            this.greeter.SoundPrev.connect((username) => {
                if (username != GLib.Environment.get_user_name())
                    return;
                if (this._player == null)
                    return;
                this._player.previous();
            });
        } catch (Error e) {
            this.greeter = null;
            warning("Unable to get greeter proxy: %s", e.message);
        }
    }
}