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// Copyright 2025 Shota FUJI
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// SPDX-License-Identifier: Apache-2.0

namespace PlacGtkAdwaita {
[GtkTemplate(ui = "/jp/pocka/plac/gtk-adwaita/ui/playback-toolbar.ui")]
class PlaybackToolbar : Gtk.Box {
	[GtkChild]
	private unowned Gtk.Button play;

	[GtkChild]
	private unowned Gtk.Button pause;

	[GtkChild]
	private unowned Gtk.ListBox zone_list;

	private unowned PlacCore.App core;

	public PlaybackToolbar() {
		Object();
	}

	public void start(PlacCore.App core) {
		this.core = core;

		core.on_server_change(() => {
				subscribe_zone_change();
			});

		subscribe_zone_change();

		core.lock();
		render();
		core.unlock();
	}

	private void subscribe_zone_change() {
		if (core.server != null) {
			core.server.on_zone_list_loading_change(() => {
					GLib.Idle.add(() => {
						core.lock();
						render();
						core.unlock();
						return false;
					});
				});

			core.server.load_zones();
		}
	}

	public void render() {
		zone_list.remove_all();

		if (core.server == null) {
			return;
		}

		unowned PlacCore.Zone? zone = null;

		foreach (unowned PlacCore.Zone z in core.server.zones) {
			if (zone == null) {
				zone = z;
			}

			var row = new Gtk.ListBoxRow();
			var label = new Gtk.Label(z.name);
			row.child = label;
			zone_list.append(row);
		}

		if (zone == null) {
			return;
		}


		switch (zone.playback_state) {
		case STOPPED:
		case PAUSED:
			play.visible = true;
			pause.visible = false;
			break;
		case PLAYING:
			play.visible = false;
			pause.visible = true;
			break;
		}
	}
}
}