package cn.slienceme.gulimall.product.service.impl;

import cn.slienceme.common.constant.ProductConstant;
import cn.slienceme.common.to.SkuReductionTo;
import cn.slienceme.common.to.SpuBoundTo;
import cn.slienceme.common.to.es.SkuEsModel;
import cn.slienceme.common.utils.R;
import cn.slienceme.gulimall.product.entity.*;
import cn.slienceme.gulimall.product.feign.CouponFeignService;
import cn.slienceme.gulimall.product.feign.SearchFeignService;
import cn.slienceme.gulimall.product.feign.WareFeignService;
import cn.slienceme.gulimall.product.service.*;
import cn.slienceme.gulimall.product.vo.*;
import com.alibaba.fastjson.TypeReference;
import io.seata.spring.annotation.GlobalTransactional;
import org.springframework.stereotype.Service;

import java.util.*;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import cn.slienceme.common.utils.PageUtils;
import cn.slienceme.common.utils.Query;
import org.springframework.beans.BeanUtils;

import java.math.BigDecimal;
import java.util.stream.Collectors;

import org.springframework.beans.factory.annotation.Autowired;

import cn.slienceme.gulimall.product.dao.SpuInfoDao;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;


@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {

    @Autowired
    SpuInfoDescService spuInfoDescService;

    @Autowired
    SpuImagesService imagesService;

    @Autowired
    AttrService attrService;

    @Autowired
    ProductAttrValueService attrValueService;

    @Autowired
    SkuInfoService skuInfoService;

    @Autowired
    SkuImagesService skuImagesService;

    @Autowired
    SkuSaleAttrValueService skuSaleAttrValueService;

    @Autowired
    CouponFeignService couponFeignService;

    @Autowired
    BrandService brandService;

    @Autowired
    CategoryService categoryService;

    @Autowired
    WareFeignService wareFeignService;

    @Autowired
    SearchFeignService searchFeignService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }

    /**
     * //TODO 高级部分完善
     *
     * @param vo
     */
    @GlobalTransactional
    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVo vo) {

        //1、保存spu基本信息 pms_spu_info
        SpuInfoEntity infoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(vo, infoEntity);
        infoEntity.setCreateTime(new Date());
        infoEntity.setUpdateTime(new Date());
        this.saveBaseSpuInfo(infoEntity);

        //2、保存Spu的描述图片 pms_spu_info_desc
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity descEntity = new SpuInfoDescEntity();
        descEntity.setSpuId(infoEntity.getId());
        descEntity.setDecript(String.join(",", decript));
        spuInfoDescService.saveSpuInfoDesc(descEntity);

        //3、保存spu的图片集 pms_spu_images
        List<String> images = vo.getImages();
        imagesService.saveImages(infoEntity.getId(), images);

        //4、保存spu的规格参数;pms_product_attr_value
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrs.stream().map(attr -> {
            ProductAttrValueEntity valueEntity = new ProductAttrValueEntity();
            valueEntity.setAttrId(attr.getAttrId());
            AttrEntity id = attrService.getById(attr.getAttrId());
            valueEntity.setAttrName(id.getAttrName());
            valueEntity.setAttrValue(attr.getAttrValues());
            valueEntity.setQuickShow(attr.getShowDesc());
            valueEntity.setSpuId(infoEntity.getId());
            return valueEntity;
        }).collect(Collectors.toList());
        attrValueService.saveProductAttr(collect);


        //5、保存spu的积分信息；gulimall_sms->sms_spu_bounds
        Bounds bounds = vo.getBounds();
        SpuBoundTo spuBoundTo = new SpuBoundTo();
        BeanUtils.copyProperties(bounds, spuBoundTo);
        spuBoundTo.setSpuId(infoEntity.getId());
        R r = couponFeignService.saveSpuBounds(spuBoundTo);
        if (r.getCode() != 0) {
            log.error("远程保存spu积分信息失败");
        }

        //5、保存当前spu对应的所有sku信息；
        List<Skus> skus = vo.getSkus();
        if (skus != null && skus.size() > 0) {
            skus.forEach(item -> {
                String defaultImg = "";
                for (Images image : item.getImages()) {
                    if (image.getDefaultImg() == 1) {
                        defaultImg = image.getImgUrl();
                    }
                }
                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(item, skuInfoEntity);
                skuInfoEntity.setBrandId(infoEntity.getBrandId());
                skuInfoEntity.setCatalogId(infoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(infoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defaultImg);
                //5.1）、sku的基本信息；pms_sku_info
                skuInfoService.saveSkuInfo(skuInfoEntity);
                Long skuId = skuInfoEntity.getSkuId();
                List<SkuImagesEntity> imagesEntities = item.getImages().stream().map(img -> {
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setImgUrl(img.getImgUrl());
                    skuImagesEntity.setDefaultImg(img.getDefaultImg());
                    return skuImagesEntity;
                }).filter(entity -> {
                    //返回true就是需要，false就是剔除
                    return !StringUtils.isEmpty(entity.getImgUrl());
                }).collect(Collectors.toList());
                //5.2）、sku的图片信息；pms_sku_image
                skuImagesService.saveBatch(imagesEntities);
                //TODO 没有图片路径的无需保存
                List<Attr> attr = item.getAttr();
                List<SkuSaleAttrValueEntity> skuSaleAttrValueEntities = attr.stream().map(a -> {
                    SkuSaleAttrValueEntity attrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(a, attrValueEntity);
                    attrValueEntity.setSkuId(skuId);
                    return attrValueEntity;
                }).collect(Collectors.toList());
                //5.3）、sku的销售属性信息：pms_sku_sale_attr_value
                skuSaleAttrValueService.saveBatch(skuSaleAttrValueEntities);

                // //5.4）、sku的优惠、满减等信息；gulimall_sms->sms_sku_ladder\sms_sku_full_reduction\sms_member_price
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                BeanUtils.copyProperties(item, skuReductionTo);
                skuReductionTo.setSkuId(skuId);
                if (skuReductionTo.getFullCount() > 0 || skuReductionTo.getFullPrice().compareTo(new BigDecimal("0")) == 1) {
                    R r1 = couponFeignService.saveSkuReduction(skuReductionTo);
                    if (r1.getCode() != 0) {
                        log.error("远程保存sku优惠信息失败");
                    }
                }
            });
        }
    }

    @Override
    public void saveBaseSpuInfo(SpuInfoEntity infoEntity) {
        this.baseMapper.insert(infoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {

        QueryWrapper<SpuInfoEntity> wrapper = new QueryWrapper<>();

        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)) {
            wrapper.and((w) -> {
                w.eq("id", key).or().like("spu_name", key);
            });
        }
        // status=1 and (id=1 or spu_name like xxx)
        String status = (String) params.get("status");
        if (!StringUtils.isEmpty(status)) {
            wrapper.eq("publish_status", status);
        }

        String brandId = (String) params.get("brandId");
        if (!StringUtils.isEmpty(brandId) && !"0".equalsIgnoreCase(brandId)) {
            wrapper.eq("brand_id", brandId);
        }

        String catelogId = (String) params.get("catelogId");
        if (!StringUtils.isEmpty(catelogId) && !"0".equalsIgnoreCase(catelogId)) {
            wrapper.eq("catalog_id", catelogId);
        }

        /**
         * status: 2
         * key:
         * brandId: 9
         * catelogId: 225
         */
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                wrapper
        );

        return new PageUtils(page);
    }

    @Override
    public void up(Long spuId) {

        // 1. 查出当前spuId对应的所有sku信息,品牌的名字
        List<SkuInfoEntity> skus = skuInfoService.getSkusBySpuId(spuId);

        // 获取一下全部ID
        List<Long> skuIdList = skus.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList());

        // TODO 4、查询当前sku的规格属性
        List<ProductAttrValueEntity> baseAttrs = attrValueService.baseAttrlistforspu(spuId);
        List<Long> attrIds = baseAttrs.stream().map(attr -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());

        List<Long> searchAttrIds = attrService.selectSearchAttrsIds(attrIds);
        Set<Long> idSet = new HashSet<>(searchAttrIds);

        List<SkuEsModel.Attr> attrsList = baseAttrs.stream().filter(item -> {
            return idSet.contains(item.getAttrId());
        }).map(item -> {
            SkuEsModel.Attr attr = new SkuEsModel.Attr();
            BeanUtils.copyProperties(item, attr);
            return attr;
        }).collect(Collectors.toList());

        // TODO 1、远程查询库存信息 hasStock
        Map<Long, Boolean> stockMap = null;
        try {
            R skuHasStock = wareFeignService.getSkuHasStock(skuIdList);
            TypeReference<List<SkuHasStockVo>> typeReference = new TypeReference<List<SkuHasStockVo>>() {};
            stockMap = skuHasStock.getData(typeReference)
                    .stream()
                    .collect(Collectors.toMap(
                            SkuHasStockVo::getSkuId,
                            item -> item.getHasStock()
                    ));
        } catch (Exception e) {
            log.error("远程查询库存信息失败");
        }

        // 2. 封装每个sku的信息
        Map<Long, Boolean> finalStockMap = stockMap;
        List<SkuEsModel> upProducts = skus.stream().map(sku -> {
            // 组装需要的数据
            SkuEsModel esModel = new SkuEsModel();
            BeanUtils.copyProperties(sku, esModel);

            // skuTitle attrs
            esModel.setSkuPrice(sku.getPrice());
            esModel.setSkuImg(sku.getSkuDefaultImg());
            // hasStock hotScore
            // TODO 1、远程查询库存信息 hasStock
            if (finalStockMap == null) {
                esModel.setHasStock(true);
            } else {
                esModel.setHasStock(finalStockMap.get(sku.getSkuId()));
            }
            // TODO 2、热度评分 默认设置 0  hotScore
            esModel.setHotScore(0L);
            // TODO 3、远程查询品牌和分类的名字信息 brandName catalogName
            BrandEntity brand = brandService.getById(sku.getBrandId());
            esModel.setBrandName(brand.getName());
            esModel.setBrandImg(brand.getLogo());
            CategoryEntity category = categoryService.getById(sku.getCatalogId());
            esModel.setCatalogName(category.getName());
            esModel.setAttrs(attrsList);
            return esModel;
        }).collect(Collectors.toList());

        // TODO 5、将数据发给es进行保存 保存到es索引库中
        R r = searchFeignService.productStatesUp(upProducts);
        if (r.getCode() == 0) {
            // TODO 6、修改当前spu的状态
            baseMapper.updateSpuStatus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());
        } else {
            log.error("商品远程es保存失败");
            // TODO 7、重复调用的问题？接口的幂等性xxx
        }
        // Feign 调用流程
        /**
         * 1、构造请求数据，将对象转为json
         *     RequestTemplate template = buildTemplateFromArgs.create(argv);
         * 2、发送请求进行执行，执行成功会返回响应数据（执行成功会解码）
         *     executeAndDecode(template);
         * 3、执行请求会有重试机制
         *      retryer.retry(template);
         *      while(true){
         *          try{
         *              executeAndDecode(template);
         *          }catch (){
         *               retryer.continueOrPropagate(e);
         *          } catch (){
         *              throw ex;
         *          }+
         *      }
         */
    }

    @Override
    public SpuInfoEntity getSpuBySkuId(Long skuId) {
        SkuInfoEntity skuInfoEntity = skuInfoService.getById(skuId);
        SpuInfoEntity spu = this.getById(skuInfoEntity.getSpuId());
        BrandEntity brandEntity = brandService.getById(spu.getBrandId());
        spu.setSpuName(brandEntity.getName());
        return spu;
    }


}
