AdvisorServer/src/main/java/com/syzb/common/service/RecommendService.java

package com.syzb.common.service;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Table;
import com.hazelcast.core.HazelcastInstance;
import com.syzb.advisor.constant.AdvisorInfoStatus;
import com.syzb.common.config.cache.CacheKey;
import com.syzb.common.constant.ProductType;
import com.syzb.common.constant.ThirdPartyProductStatus;
import com.syzb.common.entity.Recommend;
import com.syzb.common.handler.BizException;
import com.syzb.common.mapper.RecommendMapper;
import com.syzb.common.query.*;
import com.syzb.common.result.Pager;
import com.syzb.common.result.ResponseStatus;
import com.syzb.common.vo.BackendUserVO;
import com.syzb.common.vo.MergeProductInfoVO;
import com.syzb.common.vo.RecommendVO;
import com.syzb.rbac.entity.UserDept;
import com.syzb.rbac.service.UserService;
import org.springframework.dao.DuplicateKeyException;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.annotation.Resource;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.stream.Collectors;

@Service
public class RecommendService {

    @Resource
    private RecommendMapper recommendMapper;

    @Resource
    private UserService userService;

    @Resource
    private MergeProductService mergeProductService;

    @Resource
    private CacheService cacheService;

    @Resource
    private HazelcastInstance hazelcastInstance;

    public Pager<RecommendVO> list(ListRecommendQuery query) {
        Integer productType = query.getProductType();
        QueryWrapper<Recommend> wrapper = Wrappers.query();
        wrapper.eq(productType != null, "product_type", productType);
        wrapper.last("order by weight desc,create_time desc");
        Page<Recommend> page = recommendMapper.selectPage(query.toPage(), wrapper);
        Map<Integer, UserDept> userMap = userService.getUserMap();
        List<RecommendVO> list = page.getRecords().stream().map(recommend -> new RecommendVO(recommend, userMap.get(recommend.getCreateUserId()))).collect(Collectors.toList());
        // 填充产品名称
        Table<Integer, Integer, MergeProductInfoVO> productTable = mergeProductService.queryMergeProductInfo(list);
        list.forEach(vo -> {
            MergeProductInfoVO productVO = productTable.get(vo.getProductType(), vo.getProductId());
            if (productVO != null) {
                vo.setName(productVO.getProductName());
                vo.setAdvisorBasic(productVO.getAdvisorBasic());
                vo.setPlayType(productVO.getVideoPlayType());
            }
        });
        return new Pager<>(list, page.getTotal());
    }

    @Transactional(rollbackFor = Exception.class)
    public void save(SaveRecommendQuery query, BackendUserVO backendUserVO) {
        validateProduct(query);
        QueryWrapper<Recommend> wrapper = Wrappers.query();
        wrapper.eq("product_type", query.getProductType());
        long count = recommendMapper.selectCount(wrapper);
        if (count > 9) {
            throw new BizException(ResponseStatus.PARM_ERROR, "推荐位最多设置10个产品");
        }
        Recommend recommend = query.toPO(backendUserVO.getUserId());
        try {
            recommendMapper.insert(recommend);
        } catch (DuplicateKeyException e) {
            throw new BizException(ResponseStatus.RECOMMEND_DUPLICATE);
        }
        this.clearCache(ProductType.fromValue(query.getProductType()));
    }

    @Transactional(rollbackFor = Exception.class)
    public void update(UpdateRecommendQuery query, BackendUserVO backendUserVO) {
        validateProduct(query);
        Recommend recommend = query.toPO();
        int rows;
        try {
            rows = recommendMapper.updateById(recommend);
        } catch (DuplicateKeyException e) {
            throw new BizException(ResponseStatus.RECOMMEND_DUPLICATE);
        }
        if (rows == 0) {
            throw new BizException(ResponseStatus.ID_NOT_EXIST_ERROR);
        }
        this.clearCache(ProductType.fromValue(query.getProductType()));
    }

    @Transactional(rollbackFor = Exception.class)
    public void delete(OnlyIdQuery query, BackendUserVO backendUserVO) {
        Recommend recommend = recommendMapper.selectById(query.getId());
        if (recommend == null) {
            throw new BizException(ResponseStatus.ID_NOT_EXIST_ERROR);
        }
        recommendMapper.deleteById(query.getId());
        this.clearCache(ProductType.fromValue(recommend.getProductType()));
    }

    public List<Object> listForApp(Integer productType) {
        return cacheService.get(CacheKey.RECOMMEND, CacheKey.RecommendKey.APP_RECOMMEND_LIST + productType, () -> {
            QueryWrapper<Recommend> wrapper = Wrappers.query();
            wrapper.eq("product_type", productType).last("order by weight desc,create_time desc");
            List<Recommend> list = recommendMapper.selectList(wrapper);
            Table<Integer, Integer, Object> productTable = mergeProductService.queryMergeProductInfo(list, true);
            return list.stream().map(recommend -> productTable.get(recommend.getProductType(), recommend.getProductId())).filter(Objects::nonNull).collect(Collectors.toList());
        });
    }

    public void clearCache(ProductType productType) {
        Map<String, Object> cacheMap = hazelcastInstance.getMap(CacheKey.RECOMMEND);
        cacheMap.remove(CacheKey.RecommendKey.APP_RECOMMEND_LIST + productType.value);
    }

    public void validateProduct(IProduct product) {
        ProductType productType = ProductType.fromValue(product.getProductType());
        if (ProductType.H5.equals(productType)) {
            return;
        }
        Table<Integer, Integer, MergeProductInfoVO> table = mergeProductService.queryMergeProductInfo(ImmutableList.of(product));
        if (table.isEmpty()) {
            throw new BizException(ResponseStatus.PRODUCT_NOT_EXIST);
        }
        MergeProductInfoVO vo = table.get(product.getProductType(), product.getProductId());
        if ((ProductType.ADVISOR_INFO.equals(productType) && !AdvisorInfoStatus.PASS.value.equals(vo.getStatus()))
                || (ProductType.THIRD_PRODUCT.equals(productType) && !ThirdPartyProductStatus.PASS.value.equals(vo.getStatus()))
        ) {
            throw new BizException(ResponseStatus.PRODUCT_STATUS_ERROR);
        }
    }

    public void validateRecommendExist(ProductType productType, Integer productId) {
        // TODO 校验关联数据(投顾\观点\观点包\锦囊\三方产品\套餐产品)
        QueryWrapper<Recommend> recommendWrapper = Wrappers.query();
        recommendWrapper.eq("product_type", productType.value)
                .eq("product_id", productId);
        Long recommendCount = recommendMapper.selectCount(recommendWrapper);
        if (recommendCount > 0) {
            throw new BizException(ResponseStatus.RECOMMEND_CAN_NOT_SOLD_OUT);
        }
    }

}