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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

using GLib;
using Roon.JsonHelper;

namespace Roon {
	namespace Transport {
		namespace SubscribeZoneChanges {
			public class Event : Object {
				public Array<string> removed_zone_ids { get; construct; }
				public Array<Zone> added_zones { get; construct; }
				public Array<Zone> changed_zones { get; construct; }
				public Array<SeekChange> seek_changes { get; construct; }

				internal Event.from_json_node(Json.Node node) throws Error {
					var path = new FieldPath("Roon.Transport.SubscribeZoneChanges.Event");
					var obj = get_object(node, path);

					var removed_zone_ids = new Array<string>();
					var added_zones = new Array<Zone>();
					var changed_zones = new Array<Zone>();
					var seek_changes = new Array<SeekChange>();

					var removed_zone_ids_path = new FieldPath("zones_removed", path);
					var removed_zone_ids_node = get_optional_member(obj, removed_zone_ids_path);
					if (removed_zone_ids_node != null) {
						var removed_zone_ids_arr = get_array(removed_zone_ids_node, removed_zone_ids_path);
						for (uint i = 0, l = removed_zone_ids_arr.get_length(); i < l; i++) {
							var id_path = new FieldPath(@"$i", removed_zone_ids_path);
							var id = get_string(removed_zone_ids_arr.get_element(i), id_path);
							removed_zone_ids.append_val(id);
						}
					}

					var added_zones_path = new FieldPath("zones_added", path);
					var added_zones_node = get_optional_member(obj, added_zones_path);
					if (added_zones_node != null) {
						var added_zones_arr = get_array(added_zones_node, added_zones_path);
						for (uint i = 0, l = added_zones_arr.get_length(); i < l; i++) {
							var zone_path = new FieldPath(@"$i", added_zones_path);
							var zone_node = added_zones_arr.get_element(i);
							var zone = new Zone.from_json_node(zone_node, zone_path);
							added_zones.append_val(zone);
						}
					}

					var changed_zones_path = new FieldPath("zones_changed", path);
					var changed_zones_node = get_optional_member(obj, changed_zones_path);
					if (changed_zones_node != null) {
						var changed_zones_arr = get_array(changed_zones_node, changed_zones_path);
						for (uint i = 0, l = changed_zones_arr.get_length(); i < l; i++) {
							var zone_path = new FieldPath(@"$i", changed_zones_path);
							var zone_node = changed_zones_arr.get_element(i);
							var zone = new Zone.from_json_node(zone_node, zone_path);
							changed_zones.append_val(zone);
						}
					}

					var seek_changes_path = new FieldPath("zones_seek_changed", path);
					var seek_changes_node = get_optional_member(obj, seek_changes_path);
					if (seek_changes_node != null) {
						var seek_changes_arr = get_array(seek_changes_node, seek_changes_path);
						for (uint i = 0, l = seek_changes_arr.get_length(); i < l; i++) {
							var change_path = new FieldPath(@"$i", seek_changes_path);
							var change_node = seek_changes_arr.get_element(i);
							var change = new SeekChange.from_json_node(change_node, change_path);
							seek_changes.append_val(change);
						}
					}

					Object(
						removed_zone_ids: removed_zone_ids,
						added_zones: added_zones,
						changed_zones: changed_zones,
						seek_changes: seek_changes
					);
				}

				public Event.from_json(string json) throws Error {
					var parser = new Json.Parser();
					parser.load_from_data(json);
					this.from_json_node(parser.get_root());
				}
			}
		}
	}
}