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package com.sztzjy.linkCommerce.service.impl;
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import com.sztzjy.linkCommerce.config.exception.handler.ServiceException;
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import com.sztzjy.linkCommerce.config.security.JwtUser;
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import com.sztzjy.linkCommerce.entity.dto.FeatureConversionStepTwoValidationRequest;
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import com.sztzjy.linkCommerce.entity.dto.FeatureConversionStepTwoValidationResult;
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import com.sztzjy.linkCommerce.service.FeatureConversionStepTwoService;
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import org.apache.commons.lang3.StringUtils;
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import org.springframework.http.HttpStatus;
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import org.springframework.stereotype.Service;
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import java.math.BigDecimal;
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import java.math.RoundingMode;
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import java.util.Arrays;
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import java.util.List;
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@Service
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public class FeatureConversionStepTwoServiceImpl implements FeatureConversionStepTwoService {
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private static final int MIN_ROWS = 8;
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private static final int MAX_ROWS = 12;
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private static final List<String> KANO_TYPES = Arrays.asList("基本型", "期望型", "兴奋型", "无差异型", "反向型");
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@Override
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public FeatureConversionStepTwoValidationResult validate(FeatureConversionStepTwoValidationRequest request, JwtUser user) {
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requireStudent(user);
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List<String> sourceDefinitions = request == null ? null : request.getSourceDefinitions();
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List<FeatureConversionStepTwoValidationRequest.RiceScoreRow> rows = request == null ? null : request.getRows();
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if (sourceDefinitions == null || rows == null || rows.size() < MIN_ROWS || rows.size() > MAX_ROWS || sourceDefinitions.size() != rows.size()) {
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throw badRequest("RICE 评分行数必须与第一步需求转化表一致，且为 8 至 12 行");
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}
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for (int index = 0; index < rows.size(); index++) {
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String expectedId = String.format("F%02d", index + 1);
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String expectedName = sourceDefinitions.get(index);
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FeatureConversionStepTwoValidationRequest.RiceScoreRow row = rows.get(index);
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if (row == null || StringUtils.isBlank(expectedName) || !expectedId.equals(row.getRequirementId()) || !expectedName.equals(row.getName())) {
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throw badRequest("需求 ID 与功能名称必须与第一步的功能定义保持一致");
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}
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if (!KANO_TYPES.contains(row.getKano()) || !isScore(row.getReach()) || !isScore(row.getImpact())
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|| !isConfidence(row.getConfidence()) || row.getEffort() == null || row.getEffort() <= 0 || !isRiceScoreValid(row)) {
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throw badRequest("请完整填写 KANO、Reach、Impact、Confidence、Effort，并确认 RICE 得分正确");
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}
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}
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FeatureConversionStepTwoValidationResult result = new FeatureConversionStepTwoValidationResult();
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result.setValid(true);
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result.setMessage("RICE 评分填写完整。");
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return result;
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}
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private boolean isScore(Double value) {
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return value != null && value >= 1 && value <= 5 && value == Math.rint(value);
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}
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private boolean isConfidence(Double value) {
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return value != null && value >= 1 && value <= 100 && value == Math.rint(value);
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}
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private boolean isRiceScoreValid(FeatureConversionStepTwoValidationRequest.RiceScoreRow row) {
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if (StringUtils.isBlank(row.getRiceScore())) return false;
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try {
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BigDecimal expected = BigDecimal.valueOf(row.getReach())
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.multiply(BigDecimal.valueOf(row.getImpact()))
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.multiply(BigDecimal.valueOf(row.getConfidence()).movePointLeft(2))
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.divide(BigDecimal.valueOf(row.getEffort()), 2, RoundingMode.HALF_UP);
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return expected.compareTo(new BigDecimal(row.getRiceScore())) == 0;
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} catch (NumberFormatException error) {
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return false;
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}
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}
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private void requireStudent(JwtUser user) {
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if (user == null || StringUtils.isBlank(user.getUserId())) {
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throw new ServiceException(HttpStatus.UNAUTHORIZED, "请先登录后再提交");
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}
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if (user.getRoleId() != 4) {
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throw new ServiceException(HttpStatus.FORBIDDEN, "仅学生可以提交实训答案");
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}
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}
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private ServiceException badRequest(String message) {
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return new ServiceException(HttpStatus.BAD_REQUEST, message);
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}
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}
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