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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
 */

[CCode (cheader_filename = "plac_core.h")]
namespace Plac {
	[CCode (cname = "plac_server", free_function = "plac_server_free")]
	[Compact]
	public class Server {
		public Posix.SockAddr sockaddr;
		public Posix.socklen_t addrlen;

		public string id;

		[CCode (cname = "name")]
		public string name;
		public string version;

		[CCode (cname = "plac_server_dupe")]
		public Server dup ();
	}

	[CCode (cname = "plac_server_scan_options", destroy_function = "", has_type_id = false)]
	public struct ScanOptions {
		uint count;
		uint receive_window_ms;

		[CCode (cname = "plac_server_scan_options_init")]
		public ScanOptions ();
	}

	[CCode (cname = "plac_scan_result_code", cprefix = "PLAC_SCAN_", has_type_id = false)]
	public enum ScanResultCode {
		OK,
		UNKNOWN_ERROR,
		OUT_OF_MEMORY,
		SOCKET_SETUP_ERROR,
		UDP_SEND_ERROR,
		UDP_RECV_ERROR,
		NULL_POINTER_ARGS,
		SOCKET_PERMISSION_ERROR,
		TOO_MANY_SOCKET_ERROR,
		INVALID_RECEIVE_WINDOW,
		NETWORK_UNAVAILABLE,
	}

	[CCode (cname = "plac_scan_result", free_function = "plac_scan_result_free")]
	[Compact]
	public class ScanResult {
		public ScanResultCode code;

		[CCode (cname = "plac_scan_result_next")]
		public Server? next ();

		[CCode (cname = "plac_scan_result_reset")]
		public void reset ();
	}

	[CCode (cname = "plac_find_result", free_function = "plac_find_result_free")]
	[Compact]
	public class FindResult {
		public ScanResultCode code;

		public Server? server;
	}

	[CCode (cname = "plac_server_scanner", free_function = "plac_server_scanner_free")]
	[Compact]
	public class ServerScanner {
		[CCode (cname = "plac_server_scanner_make")]
		public ServerScanner ();

		[CCode (cname = "plac_server_scanner_scan")]
		public ScanResult? scan (ScanOptions opts);

		[CCode (cname = "plac_server_scanner_find")]
		public FindResult? find (string id, uint len);
	}

	[CCode (cname = "plac_application_connect_result_code", cprefix = "PLAC_APPLICATION_CONNECT_", has_type_id = false)]
	public enum ConnectResultCode {
		OK,
		UNKNOWN_ERROR,
		NULL_SELF_POINTER,
		OUT_OF_MEMORY,
		REGISTRY_DOWN,
		FAILED_TO_REGISTER,
		WEBSOCKET_CONNECTION_ERROR,
		LISTEN_THREAD_SPAWN_ERROR,
	}

	[CCode (cname = "plac_application_connect_result", free_function = "plac_application_connect_result_free")]
	[Compact]
	public class ConnectResult {
		public ConnectResultCode code;
		public string token;
	}

	[CCode (cname = "plac_application", free_function = "plac_application_free")]
	[Compact]
	public class CoreApp {
		[CCode (cname = "plac_application_make_from_server")]
		public CoreApp (Server server);

		[CCode (cname = "plac_application_connect")]
		public ConnectResult? connect (string? token);
	}
}