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

import cn.hutool.core.map.MapUtil;
import cn.hutool.core.util.IdUtil;
import cn.iocoder.yudao.framework.common.util.json.JsonUtils;
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.topic.auth.IotDeviceRegisterReqDTO;
import cn.iocoder.yudao.module.iot.core.topic.event.IotDeviceEventPostReqDTO;
import cn.iocoder.yudao.module.iot.core.topic.property.IotDevicePropertyPostReqDTO;
import cn.iocoder.yudao.module.iot.core.util.IotDeviceAuthUtils;
import cn.iocoder.yudao.module.iot.core.util.IotProductAuthUtils;
import lombok.extern.slf4j.Slf4j;
import org.eclipse.californium.core.CoapClient;
import org.eclipse.californium.core.CoapResponse;
import org.eclipse.californium.core.coap.MediaTypeRegistry;
import org.eclipse.californium.core.coap.Option;
import org.eclipse.californium.core.coap.Request;
import org.eclipse.californium.core.config.CoapConfig;
import org.eclipse.californium.elements.config.Configuration;
import org.eclipse.californium.elements.config.UdpConfig;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Disabled;
import org.junit.jupiter.api.Test;

import static cn.iocoder.yudao.module.iot.gateway.protocol.coap.handler.upstream.IotCoapAbstractHandler.OPTION_TOKEN;

/**
 * IoT 直连设备 CoAP 协议集成测试（手动测试）
 *
 * <p>测试场景：直连设备（IotProductDeviceTypeEnum 的 DIRECT 类型）通过 CoAP 协议直接连接平台
 *
 * <p>使用步骤：
 * <ol>
 *     <li>启动 yudao-module-iot-gateway 服务（CoAP 端口 5683）</li>
 *     <li>运行 {@link #testDeviceRegister()} 测试直连设备动态注册（一型一密）</li>
 *     <li>运行 {@link #testAuth()} 获取设备 token，将返回的 token 粘贴到 {@link #TOKEN} 常量</li>
 *     <li>运行以下测试方法：
 *         <ul>
 *             <li>{@link #testPropertyPost()} - 设备属性上报</li>
 *             <li>{@link #testEventPost()} - 设备事件上报</li>
 *         </ul>
 *     </li>
 * </ol>
 *
 * @author 芋道源码
 */
@Slf4j
@Disabled
public class IotDirectDeviceCoapProtocolIntegrationTest {

    private static final String SERVER_HOST = "127.0.0.1";
    private static final int SERVER_PORT = 5683;

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

    private static final String PRODUCT_KEY = "4aymZgOTOOCrDKRT";
    private static final String DEVICE_NAME = "small";
    private static final String DEVICE_SECRET = "0baa4c2ecc104ae1a26b4070c218bdf3";

    /**
     * 直连设备 Token：从 {@link #testAuth()} 方法获取后，粘贴到这里
     */
    private static final String TOKEN = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJwcm9kdWN0S2V5IjoiNGF5bVpnT1RPT0NyREtSVCIsImV4cCI6MTc2OTk5MjgxOSwiZGV2aWNlTmFtZSI6InNtYWxsIn0.UHLCXsoGNsKbtJcbTV3n1psp03G75hVcVpV4wwd39r4";

    @BeforeAll
    public static void initCaliforniumConfig() {
        // 注册 Californium 配置定义
        CoapConfig.register();
        UdpConfig.register();
        // 创建默认配置
        Configuration.setStandard(Configuration.createStandardWithoutFile());
    }

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

    /**
     * 认证测试：获取设备 Token
     */
    @Test
    public void testAuth() throws Exception {
        // 1.1 构建请求
        String uri = String.format("coap://%s:%d/auth", SERVER_HOST, SERVER_PORT);
        IotDeviceAuthReqDTO authInfo = IotDeviceAuthUtils.getAuthInfo(PRODUCT_KEY, DEVICE_NAME, DEVICE_SECRET);
        IotDeviceAuthReqDTO authReqDTO = new IotDeviceAuthReqDTO()
                .setClientId(authInfo.getClientId())
                .setUsername(authInfo.getUsername())
                .setPassword(authInfo.getPassword());
        String payload = JsonUtils.toJsonString(authReqDTO);
        // 1.2 输出请求
        log.info("[testAuth][请求 URI: {}]", uri);
        log.info("[testAuth][请求体: {}]", payload);

        // 2.1 发送请求
        CoapClient client = new CoapClient(uri);
        try {
            CoapResponse response = client.post(payload, MediaTypeRegistry.APPLICATION_JSON);
            // 2.2 输出结果
            log.info("[testAuth][响应码: {}]", response.getCode());
            log.info("[testAuth][响应体: {}]", response.getResponseText());
            log.info("[testAuth][请将返回的 token 复制到 TOKEN 常量中]");
        } finally {
            client.shutdown();
        }
    }

    // ===================== 直连设备属性上报测试 =====================

    /**
     * 属性上报测试
     */
    @Test
    @SuppressWarnings("deprecation")
    public void testPropertyPost() throws Exception {
        // 1.1 构建请求
        String uri = String.format("coap://%s:%d/topic/sys/%s/%s/thing/property/post",
                SERVER_HOST, SERVER_PORT, PRODUCT_KEY, DEVICE_NAME);
        String payload = JsonUtils.toJsonString(MapUtil.builder()
                .put("id", IdUtil.fastSimpleUUID())
                .put("method", IotDeviceMessageMethodEnum.PROPERTY_POST.getMethod())
                .put("version", "1.0")
                .put("params", IotDevicePropertyPostReqDTO.of(MapUtil.<String, Object>builder()
                        .put("width", 1)
                        .put("height", "2")
                        .build())
                )
                .build());
        // 1.2 输出请求
        log.info("[testPropertyPost][请求 URI: {}]", uri);
        log.info("[testPropertyPost][请求体: {}]", payload);

        // 2.1 发送请求
        CoapClient client = new CoapClient(uri);
        try {
            Request request = Request.newPost();
            request.setURI(uri);
            request.setPayload(payload);
            request.getOptions().setContentFormat(MediaTypeRegistry.APPLICATION_JSON);
            request.getOptions().addOption(new Option(OPTION_TOKEN, TOKEN));

            CoapResponse response = client.advanced(request);
            // 2.2 输出结果
            log.info("[testPropertyPost][响应码: {}]", response.getCode());
            log.info("[testPropertyPost][响应体: {}]", response.getResponseText());
        } finally {
            client.shutdown();
        }
    }

    // ===================== 直连设备事件上报测试 =====================

    /**
     * 事件上报测试
     */
    @Test
    @SuppressWarnings("deprecation")
    public void testEventPost() throws Exception {
        // 1.1 构建请求
        String uri = String.format("coap://%s:%d/topic/sys/%s/%s/thing/event/post",
                SERVER_HOST, SERVER_PORT, PRODUCT_KEY, DEVICE_NAME);
        String payload = JsonUtils.toJsonString(MapUtil.builder()
                .put("id", IdUtil.fastSimpleUUID())
                .put("method", IotDeviceMessageMethodEnum.EVENT_POST.getMethod())
                .put("version", "1.0")
                .put("params", IotDeviceEventPostReqDTO.of(
                        "eat",
                        MapUtil.<String, Object>builder().put("rice", 3).build(),
                        System.currentTimeMillis())
                )
                .build());
        // 1.2 输出请求
        log.info("[testEventPost][请求 URI: {}]", uri);
        log.info("[testEventPost][请求体: {}]", payload);

        // 2.1 发送请求
        CoapClient client = new CoapClient(uri);
        try {
            Request request = Request.newPost();
            request.setURI(uri);
            request.setPayload(payload);
            request.getOptions().setContentFormat(MediaTypeRegistry.APPLICATION_JSON);
            request.getOptions().addOption(new Option(OPTION_TOKEN, TOKEN));

            CoapResponse response = client.advanced(request);
            // 2.2 输出结果
            log.info("[testEventPost][响应码: {}]", response.getCode());
            log.info("[testEventPost][响应体: {}]", response.getResponseText());
        } finally {
            client.shutdown();
        }
    }

    // ===================== 动态注册测试 =====================

    /**
     * 直连设备动态注册测试（一型一密）
     * <p>
     * 使用产品密钥（productSecret）验证身份，成功后返回设备密钥（deviceSecret）
     * <p>
     * 注意：此接口不需要 Token 认证
     */
    @Test
    public void testDeviceRegister() throws Exception {
        // 1.1 构建请求
        String uri = String.format("coap://%s:%d/auth/register/device", SERVER_HOST, SERVER_PORT);
        // 1.2 构建请求参数
        String deviceName = "test-" + System.currentTimeMillis();
        String productSecret = "test-product-secret"; // 替换为实际的 productSecret
        String sign = IotProductAuthUtils.buildSign(PRODUCT_KEY, deviceName, productSecret);
        IotDeviceRegisterReqDTO reqDTO = new IotDeviceRegisterReqDTO()
                .setProductKey(PRODUCT_KEY)
                .setDeviceName(deviceName)
                .setSign(sign);
        String payload = JsonUtils.toJsonString(reqDTO);
        // 1.3 输出请求
        log.info("[testDeviceRegister][请求 URI: {}]", uri);
        log.info("[testDeviceRegister][请求体: {}]", payload);

        // 2.1 发送请求
        CoapClient client = new CoapClient(uri);
        try {
            CoapResponse response = client.post(payload, MediaTypeRegistry.APPLICATION_JSON);
            // 2.2 输出结果
            log.info("[testDeviceRegister][响应码: {}]", response.getCode());
            log.info("[testDeviceRegister][响应体: {}]", response.getResponseText());
            log.info("[testDeviceRegister][成功后可使用返回的 deviceSecret 进行一机一密认证]");
        } finally {
            client.shutdown();
        }
    }

}