package com.sztzjy.linkCommerce.service.impl;

import com.sztzjy.linkCommerce.config.exception.handler.ServiceException;
import com.sztzjy.linkCommerce.config.security.JwtUser;
import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepOneValidationRequest;
import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepOneValidationResult;
import com.sztzjy.linkCommerce.service.TargetUserProfileStepOneService;
import org.apache.commons.lang3.StringUtils;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Service;

import java.util.Locale;

@Service
public class TargetUserProfileStepOneServiceImpl implements TargetUserProfileStepOneService {
    @Override
    public TargetUserProfileStepOneValidationResult validate(TargetUserProfileStepOneValidationRequest request, JwtUser user) {
        if (user == null || StringUtils.isBlank(user.getUserId())) {
            throw new ServiceException(HttpStatus.UNAUTHORIZED, "请先登录后再校验");
        }
        if (user.getRoleId() != 4) {
            throw new ServiceException(HttpStatus.FORBIDDEN, "仅学生可进行实训校验");
        }
        if (request == null || StringUtils.isBlank(request.getExcelUrl()) || StringUtils.isBlank(request.getExcelName())) {
            throw new ServiceException(HttpStatus.BAD_REQUEST, "请上传 RFM 用户分层分析结果 Excel 数据");
        }
        String excelName = request.getExcelName().trim().toLowerCase(Locale.ROOT);
        if (!excelName.endsWith(".xls") && !excelName.endsWith(".xlsx")) {
            throw new ServiceException(HttpStatus.BAD_REQUEST, "仅支持 .xls、.xlsx 格式的 Excel 文件");
        }
        if (request.getPreviewRowCount() == null || request.getPreviewRowCount() < 1
                || request.getPreviewColumnCount() == null || request.getPreviewColumnCount() < 1) {
            throw new ServiceException(HttpStatus.BAD_REQUEST, "Excel 文件需要包含可预览的表头和数据");
        }
        TargetUserProfileStepOneValidationResult result = new TargetUserProfileStepOneValidationResult();
        result.setValid(true);
        result.setMessage("校验通过");
        return result;
    }
}