package com.zy.integration.iot.handler.impl;

import com.alibaba.fastjson.JSON;
import com.core.common.Cools;
import com.zy.integration.iot.biz.IotInstructionService;
import com.zy.integration.iot.handler.IotInboundMessageHandler;
import com.zy.integration.iot.publish.IotPublishService;
import com.zy.iot.config.IotProperties;
import com.zy.iot.entity.IotFeedbackMessage;
import com.zy.iot.entity.IotInstructionMessage;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

/**
 * MQTT 入站分发器。
 * 按 topic 识别 stow/pick/feedback，并在接单后立即尝试回发 feedback。
 */
@Slf4j
@Service
public class IotInboundMessageHandlerImpl implements IotInboundMessageHandler {

    @Autowired
    private IotProperties iotProperties;
    @Autowired
    private IotInstructionService iotInstructionService;
    @Autowired
    private IotPublishService iotPublishService;

    /**
     * MQTT 回调层只做 topic 分发和报文反序列化，业务动作仍下沉到 service。
     */
    @Override
    public void handleMessage(String topic, String payload) {
        if (!iotProperties.isEnabled() || Cools.isEmpty(topic) || payload == null) {
            return;
        }
        try {
            Long recordId = null;
            if (topic.equals(iotProperties.getTopics().getEgressStow())) {
                recordId = iotInstructionService.handleStowInstruction(JSON.parseObject(payload, IotInstructionMessage.class), topic, payload);
            } else if (topic.equals(iotProperties.getTopics().getEgressPick())) {
                recordId = iotInstructionService.handlePickInstruction(JSON.parseObject(payload, IotInstructionMessage.class), topic, payload);
            } else if (topic.equals(iotProperties.getTopics().getEgressFeedback())) {
                iotInstructionService.handleFeedbackAck(JSON.parseObject(payload, IotFeedbackMessage.class), topic, payload);
            } else {
                log.warn("ignore unknown iot topic={}, payload={}", topic, payload);
            }
            if (recordId != null) {
                // feedback 先写本地记录，再立即尝试发送；传输失败由定时任务补偿。
                iotPublishService.publishRecordNow(recordId);
            }
        } catch (Exception e) {
            log.error("handle iot inbound message failed, topic={}, payload={}", topic, payload, e);
        }
    }
}