package com.mzl.flower.service.impl.coupon;

import cn.hutool.core.util.IdUtil;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.mzl.flower.config.exception.ValidationException;
import com.mzl.flower.config.security.SecurityUtils;
import com.mzl.flower.constant.Constants;
import com.mzl.flower.dto.request.coupon.*;
import com.mzl.flower.dto.response.coupon.CouponPointStatisVO;
import com.mzl.flower.dto.response.coupon.CouponTemplateCustomerVO;
import com.mzl.flower.dto.response.coupon.CouponTemplateVO;
import com.mzl.flower.entity.coupon.CouponRecordDO;
import com.mzl.flower.entity.coupon.CouponTemplateCustomerDO;
import com.mzl.flower.entity.coupon.CouponTemplateDO;
import com.mzl.flower.entity.customer.Customer;
import com.mzl.flower.entity.menber.Member;
import com.mzl.flower.entity.point.CustomerPoint;
import com.mzl.flower.entity.point.CustomerPointDetail;
import com.mzl.flower.enums.*;
import com.mzl.flower.mapper.coupon.CouponTemplateMapper;
import com.mzl.flower.mapper.coupon.CouponTemplateMapperCustom;
import com.mzl.flower.mapper.customer.CustomerMapper;
import com.mzl.flower.mapper.point.CustomerPointDetailMapper;
import com.mzl.flower.mapper.point.CustomerPointMapper;
import com.mzl.flower.service.coupon.CouponRecordService;
import com.mzl.flower.service.coupon.CouponTemplateCustomerService;
import com.mzl.flower.service.coupon.CouponTemplateService2;
import com.mzl.flower.service.menber.MemberService;
import com.mzl.flower.service.payment.RedisLockService;
import org.apache.commons.collections4.CollectionUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
import java.util.stream.Collectors;

/**
 * <p>
 * 服务实现类
 * </p>
 *
 * @author @TaoJie
 * @since 2024-08-22
 */
@Service
public class CouponTemplateServiceImpl2 extends ServiceImpl<CouponTemplateMapper, CouponTemplateDO> implements CouponTemplateService2 {

    @Autowired
    private CouponTemplateMapperCustom couponTemplateMapperCustom;

    @Autowired
    private CouponTemplateCustomerService pointCustomReService;

    @Autowired
    private CouponRecordService couponRecordService;

    @Autowired
    private CustomerMapper customerMapper;

    @Autowired
    private CustomerPointMapper customerPointMapper;

    @Autowired
    private CouponTemplateService2 couponTemplateService;

    @Autowired
    private CustomerPointDetailMapper customerPointDetailMapper;

    @Autowired
    private MemberService memberService;

    @Autowired
    private RedisLockService lockService;



    @Transactional
    @Override
    public boolean createCouponTemplate(CreateCouponTemplateBO dto) {
        CouponTemplateDO couponTemplateDO = new CouponTemplateDO();
        BeanUtils.copyProperties(dto, couponTemplateDO);
        // 设置id,关联使用到的id
        couponTemplateDO.setId(IdUtil.simpleUUID());

        couponTemplateDO.create(SecurityUtils.getUserId());
        if (StringUtils.isBlank(dto.getStatus())) {
            // 优惠券状态 初始化为未激活状态
            couponTemplateDO.setStatus(CouponStatusEnum.INACTIVE.getStatus());
        }

        // 指定会员：需要添加制定用户的关联信息
        if (CollectionUtils.isNotEmpty(dto.getPointCostomIdList())) {

            final List<CouponTemplateCustomerDO> couponCustomList = dto.getPointCostomIdList().stream().map(customId -> {
                CouponTemplateCustomerDO customReDO = new CouponTemplateCustomerDO();
                // 解决本地不加ID不报错，线上报错问题
                customReDO.setId(IdUtil.simpleUUID());
                customReDO.setCouponId(couponTemplateDO.getId());
                customReDO.setCustomId(customId);
                return customReDO;
            }).collect(Collectors.toList());

            // 批量插入 优惠券与指定用户关联关系
            pointCustomReService.saveBatch(couponCustomList);

            // 设置优惠券的数量
            couponTemplateDO.setCouponAmount(dto.getPointCostomIdList().size());

        }

        return baseMapper.insert(couponTemplateDO) > 0;
    }

    @Transactional
    @Override
    public boolean updateCouponTemplate(CreateCouponTemplateBO dto) {
        CouponTemplateDO couponTemplateDO = baseMapper.selectById(dto.getId());
        BeanUtils.copyProperties(dto, couponTemplateDO);
        couponTemplateDO.update(SecurityUtils.getUserId());

        if (CollectionUtils.isNotEmpty(dto.getPointCostomIdList())) {
            // 根据优惠券的信息删除关联信息
            pointCustomReService.deleteByCouponTemplateId(couponTemplateDO.getId());
        }
        // 指定会员：需要添加制定用户的关联信息
        if (CollectionUtils.isNotEmpty(dto.getPointCostomIdList())) {

            final List<CouponTemplateCustomerDO> couponCustomList = dto.getPointCostomIdList().stream().map(customId -> {
                CouponTemplateCustomerDO customReDO = new CouponTemplateCustomerDO();
                // 解决本地不加ID不报错，线上报错问题
                customReDO.setId(IdUtil.simpleUUID());
                customReDO.setCouponId(couponTemplateDO.getId());
                customReDO.setCustomId(customId);
                return customReDO;
            }).collect(Collectors.toList());

            // 批量插入 优惠券与指定用户关联关系
            pointCustomReService.saveBatch(couponCustomList);

            // 设置优惠券总数当前人数
            couponTemplateDO.setCouponAmount(couponCustomList.size());

        }


        return baseMapper.updateById(couponTemplateDO) > 0;
    }

    @Override
    public List<CouponTemplateVO> getList(QueryCouponDTO dto) {

        List<CouponTemplateVO> list =new ArrayList<>();
        if(StringUtils.isNotBlank(dto.getCategory())
                && dto.getCategory().equals(CouponCategoryEnum.MEMBER.getStatus())
        ){
            // 会员优惠券
            list = couponTemplateMapperCustom.getVipList(dto);
        }else{
            list = couponTemplateMapperCustom.getList(dto);
        }
        return list;
    }

    @Override
    public Page<CouponTemplateVO> getPage(Page page, QueryCouponDTO dto) {
        List<CouponTemplateVO> result =new ArrayList<>();
        if(StringUtils.isNotBlank(dto.getCategory())
                && dto.getCategory().equals(CouponCategoryEnum.MEMBER.getStatus())
        ){
            // 会员优惠券
            result = couponTemplateMapperCustom.getCouponTemplateVipPage(page, dto);
        }else{
            result = couponTemplateMapperCustom.getCouponTemplatePage(page, dto);
        }
        return page.setRecords(result);
    }

    @Override
    public CouponTemplateVO getDetailById(String id) {
        QueryCouponDTO dto = new QueryCouponDTO();
        dto.setId(id);
        final List<CouponTemplateVO> list = getList(dto);
        if (CollectionUtils.isNotEmpty(list)) {
            CouponTemplateVO vo =list.get(0);
            // 用户获取
            if(StringUtils.isNotBlank(vo.getCategory())
                  &&  vo.getCategory().equals(CouponCategoryEnum.USER.getStatus())){
                List<CouponTemplateCustomerVO> customerList= couponTemplateMapperCustom.getCouponCustomerList(id);
                vo.setCustomerList(customerList);
            }
            // 会员等级
            if(StringUtils.isNotBlank(vo.getCategory()) && null!=vo.getMemberId()
                    &&  vo.getCategory().equals(CouponCategoryEnum.MEMBER.getStatus())){
                final Member member = memberService.getById(vo.getMemberId());
                if(null!=member){
                    vo.setMember(member);
                    vo.setMemberName(member.getName());
                }

            }

            return vo;
        }
        return null;
    }

    @Transactional
    @Override
    public boolean deleteCouponTemplate(String id) {
        return baseMapper.deleteById(id) > 0;
    }

    @Transactional
    @Override
    public boolean activeCouponTemplate(String id) {

        CouponTemplateDO couponTemplateDO = baseMapper.selectById(id);
        couponTemplateDO.setStatus(CouponStatusEnum.ACTIVE.getStatus());

        // 判断当前的优惠券的用户类型是指定用户还是全部用户，如果是指定用户的情况下需要发布优惠券
        if (StringUtils.isNotBlank(couponTemplateDO.getGetUserType())
                && StringUtils.isNotBlank(couponTemplateDO.getCategory())
                && couponTemplateDO.getGetUserType().equals(CouponGetUserTypeEnum.TARGET.getType())
                && couponTemplateDO.getCategory().equals(CouponCategoryEnum.USER.getStatus())
        ) {

            // 获取当前优惠券下的指定人员信息
            List<CouponTemplateCustomerDO> couponTemplateCustomerDOList = pointCustomReService.getPointCustomReList(id);

            if (CollectionUtils.isNotEmpty(couponTemplateCustomerDOList)) {

                // 根据发放后有效期来设置时间
                if (couponTemplateDO.getUsageTimeNum() == null || couponTemplateDO.getUsageTimeNum() <= 0) {
                    throw new ValidationException("使用时间数量必须为正整数");
                }
                LocalDateTime currentTime = LocalDateTime.now();
                couponTemplateDO.setUsageStartDate(currentTime);
                if (couponTemplateDO.getUsageTimeType().equals(CouponUsageTimeTypeEnum.DAY.getType())) {
                    // 天
                    couponTemplateDO.setUsageEndDate(currentTime.plusDays(couponTemplateDO.getUsageTimeNum()));
                }
                if (couponTemplateDO.getUsageTimeType().equals(CouponUsageTimeTypeEnum.HOUR.getType())) {
                    // 小时
                    couponTemplateDO.setUsageEndDate(currentTime.plusHours(couponTemplateDO.getUsageTimeNum()));
                }
                if (couponTemplateDO.getUsageTimeType().equals(CouponUsageTimeTypeEnum.MINUTE.getType())) {
                    // 分钟
                    couponTemplateDO.setUsageEndDate(currentTime.plusMinutes(couponTemplateDO.getUsageTimeNum()));
                }

                // 优惠券的总数等于下发人员的总数
                couponTemplateDO.setCouponAmount(couponTemplateCustomerDOList.size());

                List<CouponRecordDO> couponUsageDOList = couponTemplateCustomerDOList.stream().map(pointCustomRe -> {

                    CouponRecordDO couponRecordDO = new CouponRecordDO();

                    couponRecordDO.setId(IdUtil.simpleUUID());
                    couponRecordDO.setCouponId(pointCustomRe.getCouponId());
                    couponRecordDO.setCustomerId(pointCustomRe.getCustomId());
                    final Customer customer = customerMapper.selectById(pointCustomRe.getCustomId());
                    if (null != customer && StringUtils.isNotBlank(customer.getUserId())) {
                        // 设置所属用户id
                        couponRecordDO.setUserId(customer.getUserId());
                    }
                    couponRecordDO.setStatus(CouponUsedStatusEnum.UNUSED.getType());

                    // 设置优惠券的使用开始时间
                    couponRecordDO.setEffectiveStart(couponTemplateDO.getUsageStartDate());
                    // 设置优惠券的使用结束时间
                    couponRecordDO.setEffectiveEnd(couponTemplateDO.getUsageEndDate());

                    // 优惠券的冗余字段
                    couponRecordDO.setCouponCode(couponTemplateDO.getCouponCode());
                    couponRecordDO.setCouponName(couponTemplateDO.getCouponName());
                    //  优惠券种类
                    couponRecordDO.setCategory(couponTemplateDO.getCategory());
                    couponRecordDO.setMinOrderAmount(couponTemplateDO.getMinOrderAmount());
                    couponRecordDO.setCouponDiscountValue(couponTemplateDO.getCouponDiscountValue());
                    couponRecordDO.setGetType(couponTemplateDO.getGetType());
                    couponRecordDO.setCouponDiscountType(couponTemplateDO.getCouponDiscountType());
                    couponRecordDO.setGetUserType(couponTemplateDO.getGetUserType());
                    couponRecordDO.setPoint(couponTemplateDO.getPoint());
                    couponRecordDO.setMemberId(couponTemplateDO.getMemberId());
                    couponRecordDO.setImageUrl(couponTemplateDO.getImageUrl());

                    // 创建相关信息
                    couponRecordDO.create(SecurityUtils.getUserId());

                    // 查看当前优惠券是不是已经存在，存在的话则不能添加,防止同一人员重复下发同一张指定的优惠券
                    if(!couponRecordService.checkUserCouponExists(pointCustomRe.getCouponId(),pointCustomRe.getCustomId())){
                        return couponRecordDO;
                    }else{
                        return null;
                    }

                }).filter(Objects::nonNull).collect(Collectors.toList());

                // 批量保存优惠券信息
                couponRecordService.saveBatch(couponUsageDOList);
            }
        }

        // 如果是活动优惠券且领取渠道是Home类型的，那么只能设置当前优惠券为激活状态，其他优惠券是激活状态的设置为下架状态
        if (StringUtils.isNotBlank(couponTemplateDO.getCategory())  && couponTemplateDO.getCategory().equals(CouponCategoryEnum.ACTIVITY.getStatus())
                && StringUtils.isNotBlank(couponTemplateDO.getGetType()) && couponTemplateDO.getGetType().equals(CouponGetTypeEnum.HOME.getType())
        ) {

            couponTemplateMapperCustom.expireHomeActivityCouponTemplate();
        }

        return baseMapper.updateById(couponTemplateDO) > 0;
    }

    @Transactional
    @Override
    public boolean expireCouponTemplate(String id) {
        CouponTemplateDO couponTemplateDO = baseMapper.selectById(id);
        couponTemplateDO.setStatus(CouponStatusEnum.EXPIRED.getStatus());
        return baseMapper.updateById(couponTemplateDO) > 0;
    }

    /**
     * 获取所有会员优惠券模版
     *
     * @return
     */
    @Transactional
    @Override
    public List<CouponTemplateDO> getVipCouponTemplate() {
        QueryWrapper<CouponTemplateDO> queryWrapper = new QueryWrapper<>();
        queryWrapper.lambda()
                .eq(CouponTemplateDO::getDeleted, TrueOrFalseEnum.FALSE.isFlag())
                .eq(CouponTemplateDO::getCategory, CouponCategoryEnum.MEMBER.getStatus())
                .eq(CouponTemplateDO::getStatus, CouponStatusEnum.ACTIVE.getStatus());

        return baseMapper.selectList(queryWrapper);

    }

    @Transactional
    @Override
    public boolean deleteBatchCouponTemplate(BatchCouponTemplateDTO dto) {

        if (CollectionUtils.isNotEmpty(dto.getIdList())) {
            dto.setUpdateBy(SecurityUtils.getUserId());
            return couponTemplateMapperCustom.deleteBatchCouponTemplate(dto) > 0;
        }
        return false;
    }

    @Transactional
    @Override
    public boolean activeBatchCouponTemplate(BatchCouponTemplateDTO dto) {
        if (CollectionUtils.isNotEmpty(dto.getIdList())) {
            dto.setUpdateBy(SecurityUtils.getUserId());
            return couponTemplateMapperCustom.activeBatchCouponTemplate(dto) > 0;
        }
        return false;
    }

    @Transactional
    @Override
    public boolean expireBatchCouponTemplate(BatchCouponTemplateDTO dto) {
        if (CollectionUtils.isNotEmpty(dto.getIdList())) {
            dto.setUpdateBy(SecurityUtils.getUserId());
            return couponTemplateMapperCustom.expireBatchCouponTemplate(dto) > 0;
        }
        return false;
    }

    @Override
    public CouponPointStatisVO statisCouponTemplatePoint(QueryCouponStatisticsBO queryCouponStatisticsBO) {
        CouponPointStatisVO vo=new CouponPointStatisVO();
        //优惠券总数
        vo.setTotalAmount(couponRecordService.statisCouponTemplateCount(queryCouponStatisticsBO));
        // 本月兑换优惠券总数
        vo.setCurMonExchangeAmount(couponRecordService.statisCouponTemplateCurMonCount(queryCouponStatisticsBO));
        // 本月兑换积分总数
        vo.setCurMonExchangePointAmount(couponRecordService.statisCouponPointCurMonPontAmonut(queryCouponStatisticsBO));
        return vo;
    }

    @Override
    public List<CouponTemplateVO> getPointList(QueryActivePointCouponDTO dto) {
        if(StringUtils.isBlank(dto.getOrderStr())){
            dto.setOrderStr(" create_time desc ");
        }
        return couponTemplateMapperCustom.getCouponPointList(dto);
    }

    @Override
    public Page<CouponTemplateVO> getPointPage(Page page, QueryActivePointCouponDTO dto) {
        if(StringUtils.isBlank(dto.getOrderStr())){
            dto.setOrderStr(" create_time desc ");
        }
        return couponTemplateMapperCustom.getPointPage(page,dto);
    }

    @Override
    public  void exchangeCoupon(ExchangeCouponDTO dto) {

        String key="EXCHANGE_COUPON:"+dto.getCouponId()+":"+SecurityUtils.getUserId();
        boolean lock = lockService.getObjectLock(key, "");
        if(!lock){
            throw new ValidationException("系统操作频繁，请稍后重试");
        }
        try {
            dto.setNum(1);
            final CouponTemplateDO couponTemplateDO = couponTemplateService.getById(dto.getCouponId());
            if(couponTemplateDO==null){
                throw new ValidationException("优惠券不存在");
            }
            if(couponTemplateDO.getCouponAmount()<=0 ){
               throw new ValidationException("优惠券已兑换完");
            }
            CustomerPoint cp = customerPointMapper.selectOne(new LambdaQueryWrapper<CustomerPoint>()
                    .eq(CustomerPoint::getUserId, SecurityUtils.getUserId()));
            if(cp == null || (cp.getTotalPoint()-cp.getUsedPoint()-cp.getExpiredPoint()- cp.getExpiredPoint()) < couponTemplateDO.getPoint() * dto.getNum()){
                throw new ValidationException("积分不足");
            }

            CreateCouponRecordDTO recordDTO =new CreateCouponRecordDTO();
            recordDTO.setCouponId(dto.getCouponId());
            recordDTO.setUserId(SecurityUtils.getUserId());
            Customer customer = customerMapper.selectOne(new LambdaQueryWrapper<Customer>()
                    .eq(Customer::getUserId, SecurityUtils.getUserId()));
            if(customer == null){
                throw new ValidationException("商户不存在");
            }
            recordDTO.setCustomerId(customer.getId());
            couponRecordService.createCouponRecord(recordDTO);

//            //更新优惠券数量
//            couponTemplateDO.setCouponAmount(couponTemplateDO.getCouponAmount()-dto.getNum());
//            couponTemplateService.updateById(couponTemplateDO);

            //更新积分汇总
            cp.setUsedPoint(cp.getUsedPoint()+couponTemplateDO.getPoint());
            customerPointMapper.updateById(cp);

            //记录积分明细
            CustomerPointDetail detail = new CustomerPointDetail();
            detail.setUserId(customer.getUserId());
            detail.setCustomerId(customer.getId());
            detail.setPoint(couponTemplateDO.getPoint());
            detail.setChangeType(Constants.POINT_CHANGE_TYPE.reduce.name());
            detail.setType(Constants.POINT_TYPE.exchange.name());
            detail.setRecordDate(LocalDate.now());
            detail.setRemarks(couponTemplateDO.getCouponName());
            detail.create(SecurityUtils.getUserId());
            customerPointDetailMapper.insert(detail);
        }finally {
            lockService.releaseObjectLock(key,"");
        }

    }

    @Override
    public CouponTemplateVO getHomeActivityEffectAlert(QueryActivityEffectCouponDTO dto) {

        // 存在用户是空的情况
        final CouponTemplateVO homeActivityEffectAlert = couponTemplateMapperCustom.getHomeActivityEffectAlert(dto);
        if(null!=homeActivityEffectAlert ){
            if(StringUtils.isNotBlank(SecurityUtils.getUserId()) ){
                // 查看当前已经领取了几张
                final Integer getCnt = couponRecordService.getUserGainCouponRecordAmountByUserId(homeActivityEffectAlert.getId(), SecurityUtils.getUserId());
                // 如果当前领取的数量小于限制领取的数量的时候，可以再次领取
                if(null!=homeActivityEffectAlert.getGetLimit() && null!=getCnt
                        && homeActivityEffectAlert.getGetLimit().compareTo(getCnt)>0){
                    return homeActivityEffectAlert;
                }
            }else{
                return homeActivityEffectAlert;
            }
        }

        return null;
    }

    @Override
    public List<CouponTemplateVO> getActivityEffectList(QueryActivityEffectCouponDTO dto) {

        return couponTemplateMapperCustom.getActivityEffectList(dto);
    }

}