package cn.iocoder.yudao.module.mes.service.safety;
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import cn.iocoder.yudao.framework.common.pojo.PageResult;
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import cn.iocoder.yudao.framework.common.util.object.BeanUtils;
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import cn.iocoder.yudao.module.mes.controller.admin.safety.vo.risk.MesSafetyRiskPageReqVO;
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import cn.iocoder.yudao.module.mes.controller.admin.safety.vo.risk.MesSafetyRiskSaveReqVO;
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import cn.iocoder.yudao.module.mes.dal.dataobject.safety.MesSafetyRiskDO;
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import cn.iocoder.yudao.module.mes.dal.mysql.safety.MesSafetyRiskMapper;
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import jakarta.annotation.Resource;
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import org.springframework.stereotype.Service;
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import org.springframework.validation.annotation.Validated;
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import java.math.BigDecimal;
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import java.util.List;
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import java.util.Objects;
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import static cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil.exception;
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import static cn.iocoder.yudao.module.mes.enums.ErrorCodeConstants.*;
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/**
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* 安全生产 - 风险清单 Service 实现
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*
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* LEC 法（格雷厄姆-金尼法）：
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* D = L × E × C
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* 等级：D≥320 重大(1)；160≤D<320 较大(2)；70≤D<160 一般(3)；D<70 低(4)
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*
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* @author 超级管理员
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*/
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@Service
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@Validated
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public class MesSafetyRiskServiceImpl implements MesSafetyRiskService {
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/** 风险等级阈值 */
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private static final BigDecimal LEVEL_1_THRESHOLD = new BigDecimal("320");
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private static final BigDecimal LEVEL_2_THRESHOLD = new BigDecimal("160");
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private static final BigDecimal LEVEL_3_THRESHOLD = new BigDecimal("70");
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@Resource
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private MesSafetyRiskMapper riskMapper;
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@Resource
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private MesSafetyRiskUnitService riskUnitService;
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@Override
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public PageResult<MesSafetyRiskDO> getRiskPage(MesSafetyRiskPageReqVO pageReqVO) {
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return riskMapper.selectPage(pageReqVO);
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}
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@Override
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public MesSafetyRiskDO getRisk(Long id) {
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return riskMapper.selectById(id);
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}
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@Override
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public Long createRisk(MesSafetyRiskSaveReqVO createReqVO) {
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// 1. 风险单元必须存在
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riskUnitService.validateRiskUnitExists(createReqVO.getUnitId());
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// 2. 编码唯一
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validateCodeUnique(null, createReqVO.getCode());
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// 3. 转换并计算 LEC
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MesSafetyRiskDO risk = BeanUtils.toBean(createReqVO, MesSafetyRiskDO.class);
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applyLecEvaluation(risk);
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riskMapper.insert(risk);
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return risk.getId();
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}
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@Override
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public void updateRisk(MesSafetyRiskSaveReqVO updateReqVO) {
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validateRiskExists(updateReqVO.getId());
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riskUnitService.validateRiskUnitExists(updateReqVO.getUnitId());
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validateCodeUnique(updateReqVO.getId(), updateReqVO.getCode());
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MesSafetyRiskDO updateObj = BeanUtils.toBean(updateReqVO, MesSafetyRiskDO.class);
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applyLecEvaluation(updateObj);
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riskMapper.updateById(updateObj);
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}
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@Override
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public void deleteRisk(Long id) {
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validateRiskExists(id);
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riskMapper.deleteById(id);
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}
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@Override
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public List<MesSafetyRiskDO> getRiskListByUnitId(Long unitId) {
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return riskMapper.selectListByUnitId(unitId);
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}
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@Override
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public MesSafetyRiskDO validateRiskExists(Long id) {
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if (id == null) {
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throw exception(MES_SAFETY_RISK_NOT_EXISTS);
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}
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MesSafetyRiskDO risk = riskMapper.selectById(id);
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if (risk == null) {
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throw exception(MES_SAFETY_RISK_NOT_EXISTS);
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}
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return risk;
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}
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@Override
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public BigDecimal calculateRiskValue(BigDecimal likelihood, BigDecimal exposure, BigDecimal consequence) {
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if (likelihood == null || exposure == null || consequence == null) {
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return null;
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}
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if (likelihood.compareTo(BigDecimal.ZERO) <= 0
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|| exposure.compareTo(BigDecimal.ZERO) <= 0
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|| consequence.compareTo(BigDecimal.ZERO) <= 0) {
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throw exception(MES_SAFETY_RISK_LEC_INVALID);
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}
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// D = L × E × C，保留 2 位小数
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return likelihood.multiply(exposure).multiply(consequence)
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.setScale(2, java.math.RoundingMode.HALF_UP);
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}
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@Override
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public Integer calculateRiskLevel(BigDecimal riskValue) {
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if (riskValue == null) {
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return null;
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}
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if (riskValue.compareTo(LEVEL_1_THRESHOLD) >= 0) {
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return 1; // 重大风险
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}
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if (riskValue.compareTo(LEVEL_2_THRESHOLD) >= 0) {
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return 2; // 较大风险
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}
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if (riskValue.compareTo(LEVEL_3_THRESHOLD) >= 0) {
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return 3; // 一般风险
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}
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return 4; // 低风险
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}
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/**
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* 计算并回填 D 值与风险等级
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*/
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private void applyLecEvaluation(MesSafetyRiskDO risk) {
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// L/E/C 都为空时视为未评估，保持空值
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if (risk.getLikelihood() == null && risk.getExposure() == null && risk.getConsequence() == null) {
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risk.setRiskValue(null);
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risk.setRiskLevel(null);
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return;
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}
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BigDecimal riskValue = calculateRiskValue(risk.getLikelihood(), risk.getExposure(), risk.getConsequence());
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risk.setRiskValue(riskValue);
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risk.setRiskLevel(calculateRiskLevel(riskValue));
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}
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/**
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* 校验编码唯一（id 为空表示新增）
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*/
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private void validateCodeUnique(Long id, String code) {
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MesSafetyRiskDO exists = riskMapper.selectByCode(code);
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if (exists == null) {
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return;
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}
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if (id == null || !Objects.equals(exists.getId(), id)) {
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throw exception(MES_SAFETY_RISK_CODE_DUPLICATE);
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}
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}
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}
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