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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 Roon {
	namespace Browse {
		namespace Load {
			public class Request : Object {
				public Hierarchy hierarchy { get; set construct; }
				public bool has_set_display_offset { get; set; default = false; }
				public int64 set_display_offset { get; set; default = 0; }
				public bool has_level { get; set; default = false; }
				public size_t level { get; set; default = 0; }
				public bool has_offset { get; set; default = false; }
				public int64 offset { get; set; default = 0; }
				public size_t count { get; set; default = 0; }
				public string? multi_session_key { get; set; default = null; }

				public Request(Hierarchy hierarchy) {
					Object(hierarchy: hierarchy);
				}

				construct {
					this.notify["set-display-offset"].connect(() => {
						has_set_display_offset = true;
					});

					this.notify["level"].connect(() => {
						has_level = true;
					});

					this.notify["offset"].connect(() => {
						has_offset = true;
					});
				}

				public string to_json() {
					var builder = new Json.Builder();

					builder.begin_object();

					builder.set_member_name("hierarchy");
					hierarchy.json_add(builder);

					if (has_set_display_offset) {
						builder.set_member_name("set_display_offset");
						builder.add_int_value(set_display_offset);
					}

					if (has_level) {
						builder.set_member_name("level");
						builder.add_int_value(level);
					}

					if (has_offset) {
						builder.set_member_name("offset");
						builder.add_int_value(offset);
					}

					if (count > 0) {
						builder.set_member_name("count");
						builder.add_int_value(count);
					}

					if (multi_session_key != null) {
						builder.set_member_name("multi_session_key");
						builder.add_string_value(multi_session_key);
					}

					builder.end_object();

					var generator = new Json.Generator();
					var root = builder.get_root();
					generator.set_root(root);

					return generator.to_data(null);
				}
			}
		}
	}
}