package com.ltkj.mall.service.impl;

import java.time.LocalDate;
import java.time.format.DateTimeFormatter;
import java.util.List;
import java.util.Random;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.ltkj.common.utils.DateUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.ltkj.mall.mapper.MallAftersaleMapper;
import com.ltkj.mall.domain.MallAftersale;
import com.ltkj.mall.service.IMallAftersaleService;

/**
 * 售后Service业务层处理
 *
 * @author ltkj_赵佳豪&李格
 * @date 2023-07-12
 */
@Service
public class MallAftersaleServiceImpl extends ServiceImpl<MallAftersaleMapper,MallAftersale> implements IMallAftersaleService {
    @Autowired
    private MallAftersaleMapper mallAftersaleMapper;

    /**
     * 查询售后
     *
     * @param id 售后主键
     * @return 售后
     */
    @Override
    public MallAftersale selectMallAftersaleById(Long id) {
        return mallAftersaleMapper.selectMallAftersaleById(id);
    }

    /**
     * 查询售后列表
     *
     * @param mallAftersale 售后
     * @return 售后
     */
    @Override
    public List<MallAftersale> selectMallAftersaleList(MallAftersale mallAftersale) {
        return mallAftersaleMapper.selectMallAftersaleList(mallAftersale);
    }

    /**
     * 新增售后
     *
     * @param mallAftersale 售后
     * @return 结果
     */
    @Override
    public int insertMallAftersale(MallAftersale mallAftersale) {
                mallAftersale.setCreateTime(DateUtils.getNowDate());
            return mallAftersaleMapper.insertMallAftersale(mallAftersale);
    }

    /**
     * 修改售后
     *
     * @param mallAftersale 售后
     * @return 结果
     */
    @Override
    public int updateMallAftersale(MallAftersale mallAftersale) {
                mallAftersale.setUpdateTime(DateUtils.getNowDate());
        return mallAftersaleMapper.updateMallAftersale(mallAftersale);
    }

    /**
     * 批量删除售后
     *
     * @param ids 需要删除的售后主键
     * @return 结果
     */
    @Override
    public int deleteMallAftersaleByIds(Long[] ids) {
        return mallAftersaleMapper.deleteMallAftersaleByIds(ids);
    }

    /**
     * 删除售后信息
     *
     * @param id 售后主键
     * @return 结果
     */
    @Override
    public int deleteMallAftersaleById(Long id) {
        return mallAftersaleMapper.deleteMallAftersaleById(id);
    }

    @Override
    public String generateAftersaleSn(Long memberId) {
        DateTimeFormatter df = DateTimeFormatter.ofPattern("yyyyMMdd");
        String now = df.format(LocalDate.now());
        String aftersaleSn = now + getRandomNum(6);
        while (count(new LambdaQueryWrapper<MallAftersale>()
                .eq(MallAftersale::getUserId,memberId)
                .eq(MallAftersale::getAftersaleSn,aftersaleSn)
        ) > 0) {
            aftersaleSn = now + getRandomNum(6);
        }
        return "SH"+aftersaleSn;
    }
    private String getRandomNum(Integer num) {
        String base = "0123456789";
        Random random = new Random();
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < num; i++) {
            int number = random.nextInt(base.length());
            sb.append(base.charAt(number));
        }
        return sb.toString();
    }
}