package cn.iocoder.yudao.module.iot.gateway.protocol.tcp;

import cn.hutool.core.collection.ListUtil;
import cn.hutool.core.map.MapUtil;
import cn.hutool.core.util.IdUtil;
import cn.iocoder.yudao.module.iot.core.biz.dto.IotDeviceAuthReqDTO;
import cn.iocoder.yudao.module.iot.core.enums.IotDeviceMessageMethodEnum;
import cn.iocoder.yudao.module.iot.core.mq.message.IotDeviceMessage;
import cn.iocoder.yudao.module.iot.core.topic.IotDeviceIdentity;
import cn.iocoder.yudao.module.iot.core.topic.auth.IotSubDeviceRegisterReqDTO;
import cn.iocoder.yudao.module.iot.core.topic.property.IotDevicePropertyPackPostReqDTO;
import cn.iocoder.yudao.module.iot.core.topic.topo.IotDeviceTopoAddReqDTO;
import cn.iocoder.yudao.module.iot.core.topic.topo.IotDeviceTopoDeleteReqDTO;
import cn.iocoder.yudao.module.iot.core.topic.topo.IotDeviceTopoGetReqDTO;
import cn.iocoder.yudao.module.iot.core.util.IotDeviceAuthUtils;
import cn.iocoder.yudao.module.iot.gateway.protocol.tcp.codec.IotTcpCodecTypeEnum;
import cn.iocoder.yudao.module.iot.gateway.protocol.tcp.codec.IotTcpFrameCodec;
import cn.iocoder.yudao.module.iot.gateway.protocol.tcp.codec.IotTcpFrameCodecFactory;
import cn.iocoder.yudao.module.iot.gateway.serialize.IotMessageSerializer;
import cn.iocoder.yudao.module.iot.gateway.serialize.json.IotJsonSerializer;
import io.vertx.core.Vertx;
import io.vertx.core.buffer.Buffer;
import io.vertx.core.net.NetClient;
import io.vertx.core.net.NetClientOptions;
import io.vertx.core.net.NetSocket;
import io.vertx.core.parsetools.RecordParser;
import lombok.extern.slf4j.Slf4j;
import org.junit.jupiter.api.AfterAll;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Disabled;
import org.junit.jupiter.api.Test;

import java.util.Collections;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.TimeUnit;

/**
 * IoT 网关设备 TCP 协议集成测试（手动测试）
 *
 * <p>测试场景：网关设备（IotProductDeviceTypeEnum 的 GATEWAY 类型）通过 TCP 协议管理子设备拓扑关系
 *
 * <p>使用步骤：
 * <ol>
 *     <li>启动 yudao-module-iot-gateway 服务（TCP 端口 8091）</li>
 *     <li>运行以下测试方法：
 *         <ul>
 *             <li>{@link #testAuth()} - 网关设备认证</li>
 *             <li>{@link #testTopoAdd()} - 添加子设备拓扑关系</li>
 *             <li>{@link #testTopoDelete()} - 删除子设备拓扑关系</li>
 *             <li>{@link #testTopoGet()} - 获取子设备拓扑关系</li>
 *             <li>{@link #testSubDeviceRegister()} - 子设备动态注册</li>
 *             <li>{@link #testPropertyPackPost()} - 批量上报属性（网关 + 子设备）</li>
 *         </ul>
 *     </li>
 * </ol>
 *
 * <p>注意：TCP 协议是有状态的长连接，认证成功后同一连接上的后续请求无需再携带认证信息
 *
 * @author 芋道源码
 */
@Slf4j
@Disabled
public class IotGatewayDeviceTcpProtocolIntegrationTest {

    private static final String SERVER_HOST = "127.0.0.1";
    private static final int SERVER_PORT = 8091;
    private static final int TIMEOUT_MS = 5000;

    private static Vertx vertx;
    private static NetClient netClient;

    // ===================== 编解码器 =====================

    /**
     * 消息序列化器
     */
    private static final IotMessageSerializer SERIALIZER = new IotJsonSerializer();

    /**
     * TCP 帧编解码器
     */
    private static final IotTcpFrameCodec FRAME_CODEC = IotTcpFrameCodecFactory.create(
            new IotTcpConfig.CodecConfig()
                    .setType(IotTcpCodecTypeEnum.DELIMITER.getType())
                    .setDelimiter("\\n")
//                    .setType(IotTcpCodecTypeEnum.LENGTH_FIELD.getType())
//                    .setLengthFieldOffset(0)
//                    .setLengthFieldLength(4)
//                    .setLengthAdjustment(0)
//                    .setInitialBytesToStrip(4)
//                    .setType(IotTcpCodecTypeEnum.LENGTH_FIELD.getType())
//                    .setFixedLength(256)
    );

    // ===================== 网关设备信息（根据实际情况修改，从 iot_device 表查询网关设备） =====================

    private static final String GATEWAY_PRODUCT_KEY = "m6XcS1ZJ3TW8eC0v";
    private static final String GATEWAY_DEVICE_NAME = "sub-ddd";
    private static final String GATEWAY_DEVICE_SECRET = "b3d62c70f8a4495487ed1d35d61ac2b3";

    // ===================== 子设备信息（根据实际情况修改，从 iot_device 表查询子设备） =====================

    private static final String SUB_DEVICE_PRODUCT_KEY = "jAufEMTF1W6wnPhn";
    private static final String SUB_DEVICE_NAME = "chazuo-it";
    private static final String SUB_DEVICE_SECRET = "d46ef9b28ab14238b9c00a3a668032af";

    @BeforeAll
    static void setUp() {
        vertx = Vertx.vertx();
        NetClientOptions options = new NetClientOptions()
                .setConnectTimeout(TIMEOUT_MS)
                .setIdleTimeout(TIMEOUT_MS);
        netClient = vertx.createNetClient(options);
    }

    @AfterAll
    static void tearDown() {
        if (netClient != null) {
            netClient.close();
        }
        if (vertx != null) {
            vertx.close();
        }
    }

    // ===================== 认证测试 =====================

    /**
     * 网关设备认证测试：获取网关设备 Token
     */
    @Test
    public void testAuth() throws Exception {
        // 1. 构建认证消息
        IotDeviceAuthReqDTO authInfo = IotDeviceAuthUtils.getAuthInfo(
                GATEWAY_PRODUCT_KEY, GATEWAY_DEVICE_NAME, GATEWAY_DEVICE_SECRET);
        IotDeviceAuthReqDTO authReqDTO = new IotDeviceAuthReqDTO()
                .setClientId(authInfo.getClientId())
                .setUsername(authInfo.getUsername())
                .setPassword(authInfo.getPassword());
        IotDeviceMessage request = IotDeviceMessage.requestOf("auth", authReqDTO);

        // 2. 发送并接收响应
        NetSocket socket = connect().get(TIMEOUT_MS, TimeUnit.MILLISECONDS);
        try {
            IotDeviceMessage response = sendAndReceive(socket, request);
            log.info("[testAuth][响应消息: {}]", response);
        } finally {
            socket.close();
        }
    }

    // ===================== 拓扑管理测试 =====================

    /**
     * 添加子设备拓扑关系测试
     */
    @Test
    public void testTopoAdd() throws Exception {
        NetSocket socket = connect().get(TIMEOUT_MS, TimeUnit.MILLISECONDS);
        try {
            // 1. 先进行认证
            IotDeviceMessage authResponse = authenticate(socket);
            log.info("[testTopoAdd][认证响应: {}]", authResponse);

            // 2.1 构建子设备认证信息
            IotDeviceAuthReqDTO subAuthInfo = IotDeviceAuthUtils.getAuthInfo(
                    SUB_DEVICE_PRODUCT_KEY, SUB_DEVICE_NAME, SUB_DEVICE_SECRET);
            IotDeviceAuthReqDTO subDeviceAuth = new IotDeviceAuthReqDTO()
                    .setClientId(subAuthInfo.getClientId())
                    .setUsername(subAuthInfo.getUsername())
                    .setPassword(subAuthInfo.getPassword());
            // 2.2 构建请求参数
            IotDeviceTopoAddReqDTO params = new IotDeviceTopoAddReqDTO();
            params.setSubDevices(Collections.singletonList(subDeviceAuth));
            IotDeviceMessage request = IotDeviceMessage.requestOf(
                    IdUtil.fastSimpleUUID(),
                    IotDeviceMessageMethodEnum.TOPO_ADD.getMethod(),
                    params);

            // 3. 发送并接收响应
            IotDeviceMessage response = sendAndReceive(socket, request);
            log.info("[testTopoAdd][响应消息: {}]", response);
        } finally {
            socket.close();
        }
    }

    /**
     * 删除子设备拓扑关系测试
     */
    @Test
    public void testTopoDelete() throws Exception {
        NetSocket socket = connect().get(TIMEOUT_MS, TimeUnit.MILLISECONDS);
        try {
            // 1. 先进行认证
            IotDeviceMessage authResponse = authenticate(socket);
            log.info("[testTopoDelete][认证响应: {}]", authResponse);

            // 2. 构建请求参数
            IotDeviceTopoDeleteReqDTO params = new IotDeviceTopoDeleteReqDTO();
            params.setSubDevices(Collections.singletonList(
                    new IotDeviceIdentity(SUB_DEVICE_PRODUCT_KEY, SUB_DEVICE_NAME)));
            IotDeviceMessage request = IotDeviceMessage.requestOf(
                    IotDeviceMessageMethodEnum.TOPO_DELETE.getMethod(),
                    params);

            // 3. 发送并接收响应
            IotDeviceMessage response = sendAndReceive(socket, request);
            log.info("[testTopoDelete][响应消息: {}]", response);
        } finally {
            socket.close();
        }
    }

    /**
     * 获取子设备拓扑关系测试
     */
    @Test
    public void testTopoGet() throws Exception {
        NetSocket socket = connect().get(TIMEOUT_MS, TimeUnit.MILLISECONDS);
        try {
            // 1. 先进行认证
            IotDeviceMessage authResponse = authenticate(socket);
            log.info("[testTopoGet][认证响应: {}]", authResponse);

            // 2. 构建请求参数
            IotDeviceTopoGetReqDTO params = new IotDeviceTopoGetReqDTO();
            IotDeviceMessage request = IotDeviceMessage.requestOf(
                    IotDeviceMessageMethodEnum.TOPO_GET.getMethod(),
                    params);

            // 3. 发送并接收响应
            IotDeviceMessage response = sendAndReceive(socket, request);
            log.info("[testTopoGet][响应消息: {}]", response);
        } finally {
            socket.close();
        }
    }

    // ===================== 子设备注册测试 =====================

    /**
     * 子设备动态注册测试
     */
    @Test
    public void testSubDeviceRegister() throws Exception {
        NetSocket socket = connect().get(TIMEOUT_MS, TimeUnit.MILLISECONDS);
        try {
            // 1. 先进行认证
            IotDeviceMessage authResponse = authenticate(socket);
            log.info("[testSubDeviceRegister][认证响应: {}]", authResponse);

            // 2. 构建请求参数
            IotSubDeviceRegisterReqDTO subDevice = new IotSubDeviceRegisterReqDTO()
                    .setProductKey(SUB_DEVICE_PRODUCT_KEY)
                    .setDeviceName("mougezishebei");
            IotDeviceMessage request = IotDeviceMessage.requestOf(
                    IotDeviceMessageMethodEnum.SUB_DEVICE_REGISTER.getMethod(),
                    Collections.singletonList(subDevice));

            // 3. 发送并接收响应
            IotDeviceMessage response = sendAndReceive(socket, request);
            log.info("[testSubDeviceRegister][响应消息: {}]", response);
        } finally {
            socket.close();
        }
    }

    // ===================== 批量上报测试 =====================

    /**
     * 批量上报属性测试（网关 + 子设备）
     */
    @Test
    public void testPropertyPackPost() throws Exception {
        NetSocket socket = connect().get(TIMEOUT_MS, TimeUnit.MILLISECONDS);
        try {
            // 1. 先进行认证
            IotDeviceMessage authResponse = authenticate(socket);
            log.info("[testPropertyPackPost][认证响应: {}]", authResponse);

            // 2.1 构建【网关设备】自身属性
            Map<String, Object> gatewayProperties = MapUtil.<String, Object>builder()
                    .put("temperature", 25.5)
                    .build();
            // 2.2 构建【网关设备】自身事件
            IotDevicePropertyPackPostReqDTO.EventValue gatewayEvent = new IotDevicePropertyPackPostReqDTO.EventValue()
                    .setValue(MapUtil.builder().put("message", "gateway started").build())
                    .setTime(System.currentTimeMillis());
            Map<String, IotDevicePropertyPackPostReqDTO.EventValue> gatewayEvents = MapUtil.<String, IotDevicePropertyPackPostReqDTO.EventValue>builder()
                    .put("statusReport", gatewayEvent)
                    .build();
            // 2.3 构建【网关子设备】属性
            Map<String, Object> subDeviceProperties = MapUtil.<String, Object>builder()
                    .put("power", 100)
                    .build();
            // 2.4 构建【网关子设备】事件
            IotDevicePropertyPackPostReqDTO.EventValue subDeviceEvent = new IotDevicePropertyPackPostReqDTO.EventValue()
                    .setValue(MapUtil.builder().put("errorCode", 0).build())
                    .setTime(System.currentTimeMillis());
            Map<String, IotDevicePropertyPackPostReqDTO.EventValue> subDeviceEvents = MapUtil.<String, IotDevicePropertyPackPostReqDTO.EventValue>builder()
                    .put("healthCheck", subDeviceEvent)
                    .build();
            // 2.5 构建子设备数据
            IotDevicePropertyPackPostReqDTO.SubDeviceData subDeviceData = new IotDevicePropertyPackPostReqDTO.SubDeviceData()
                    .setIdentity(new IotDeviceIdentity(SUB_DEVICE_PRODUCT_KEY, SUB_DEVICE_NAME))
                    .setProperties(subDeviceProperties)
                    .setEvents(subDeviceEvents);
            // 2.6 构建请求参数
            IotDevicePropertyPackPostReqDTO params = new IotDevicePropertyPackPostReqDTO();
            params.setProperties(gatewayProperties);
            params.setEvents(gatewayEvents);
            params.setSubDevices(ListUtil.of(subDeviceData));
            IotDeviceMessage request = IotDeviceMessage.requestOf(
                    IotDeviceMessageMethodEnum.PROPERTY_PACK_POST.getMethod(),
                    params);

            // 3. 发送并接收响应
            IotDeviceMessage response = sendAndReceive(socket, request);
            log.info("[testPropertyPackPost][响应消息: {}]", response);
        } finally {
            socket.close();
        }
    }

    // ===================== 辅助方法 =====================

    /**
     * 建立 TCP 连接
     *
     * @return 连接 Future
     */
    private CompletableFuture<NetSocket> connect() {
        CompletableFuture<NetSocket> future = new CompletableFuture<>();
        netClient.connect(SERVER_PORT, SERVER_HOST)
                .onSuccess(future::complete)
                .onFailure(future::completeExceptionally);
        return future;
    }

    /**
     * 执行网关设备认证
     *
     * @param socket TCP 连接
     * @return 认证响应消息
     */
    private IotDeviceMessage authenticate(NetSocket socket) throws Exception {
        IotDeviceAuthReqDTO authInfo = IotDeviceAuthUtils.getAuthInfo(
                GATEWAY_PRODUCT_KEY, GATEWAY_DEVICE_NAME, GATEWAY_DEVICE_SECRET);
        IotDeviceMessage request = IotDeviceMessage.requestOf("auth", authInfo);
        return sendAndReceive(socket, request);
    }

    /**
     * 发送消息并接收响应（复用 IotTcpFrameCodec 编解码逻辑）
     *
     * @param socket  TCP 连接
     * @param request 请求消息
     * @return 响应消息
     */
    private IotDeviceMessage sendAndReceive(NetSocket socket, IotDeviceMessage request) throws Exception {
        // 1. 使用 FRAME_CODEC 创建解码器（复用 gateway 的拆包逻辑）
        CompletableFuture<IotDeviceMessage> responseFuture = new CompletableFuture<>();
        RecordParser parser = FRAME_CODEC.createDecodeParser(buffer -> {
            try {
                // 反序列化响应
                IotDeviceMessage response = SERIALIZER.deserialize(buffer.getBytes());
                responseFuture.complete(response);
            } catch (Exception e) {
                responseFuture.completeExceptionally(e);
            }
        });
        socket.handler(parser);

        // 2.1 序列化 + 帧编码
        byte[] serializedData = SERIALIZER.serialize(request);
        Buffer frameData = FRAME_CODEC.encode(serializedData);
        log.info("[sendAndReceive][发送消息: {}，数据长度: {} 字节]", request.getMethod(), frameData.length());
        // 2.2 发送请求
        socket.write(frameData);

        // 3. 等待响应
        IotDeviceMessage response = responseFuture.get(TIMEOUT_MS, TimeUnit.MILLISECONDS);
        log.info("[sendAndReceive][收到响应，数据长度: {} 字节]",
                SERIALIZER.serialize(response).length);
        return response;
    }

}
