package com.ishop.merchant.cache;

import com.ishop.merchant.ArticleCategoryCache;
import com.ishop.merchant.Constants;
import com.ishop.merchant.service.ArticleServiceImpl;
import com.ishop.merchant.util.VoUtils;
import com.ishop.model.po.EbArticleCategory;
import com.ishop.model.vo.ArticleCategoryVo;
import com.walker.cache.Cache;
import com.walker.infrastructure.ApplicationRuntimeException;
import com.walker.infrastructure.utils.JsonUtils;
import com.walker.infrastructure.utils.StringUtils;
import com.walker.support.redis.cache.RedisCache;
import com.walker.support.redis.cache.RedisCacheProvider;

import java.util.ArrayList;
import java.util.List;

public class RedisArticleCateCache extends RedisCacheProvider<ArticleCategoryVo> implements ArticleCategoryCache {

    public RedisArticleCateCache(){
        this.setUseRedis(true);
        this.setLoadPage(false);
    }

    @Override
    protected int loadDataToCache(Cache cache) {
        List<EbArticleCategory> hosts = this.articleService.selectAll(new EbArticleCategory());
        if(!StringUtils.isEmptyList(hosts)){
            // ------------------------- 切换成普通缓存步骤：3
            if(this.isUseRedis()){
                // 如果redis中缓存数量和数据库中不一致（少），则清空redis缓存，重新加载数据库数据到缓存中。
                long totalCache = cache.getPersistentSize();
                if(totalCache < hosts.size()){
                    logger.info("redis缓存中Category数量小于实际用户，需要清空缓存重新加载! cache = " + totalCache + ", db = " + hosts.size());
                    cache.clear();

                    for(EbArticleCategory h : hosts){
                        if(h.getIsDel().intValue() == 1){
                            continue;
                        }
                        cache.put(String.valueOf(h.getId()), VoUtils.acquireArticleCategoryVo(h, ""));
                    }
                }
            }//------------------------------------------
            return hosts.size();
        }
        return 0;
    }

    @Override
    public List<ArticleCategoryVo> getList() {
        List<ArticleCategoryVo> data = new ArrayList<>(2);
        ArticleCategoryVo vo = null;
        for(String value : ((RedisCache)this.getCache()).getIterator(null)){
            try{
                vo = JsonUtils.jsonStringToObject(value, ArticleCategoryVo.class);
            } catch (Exception ex){
                throw new ApplicationRuntimeException("redis存储'S_category'解析错误：" + value, ex);
            }
            if(vo.getStatus()){
                data.add(vo);
            }
        }
        return data;
    }

    @Override
    public ArticleCategoryVo get(long id) {
        return this.getCacheData(String.valueOf(id));
    }

    @Override
    public void save(ArticleCategoryVo category) {
        this.putCacheData(String.valueOf(category.getId()), category);
    }

    @Override
    public void update(ArticleCategoryVo category) {
        this.updateCacheData(String.valueOf(category.getId()), category);
    }

    @Override
    public void remove(long id) {
        this.removeCacheData(String.valueOf(id));
    }

    @Override
    public String getProviderName() {
        return Constants.CACHE_NAME_ARTICLE_CATE;
    }

    @Override
    public Class<?> getProviderType() {
        return ArticleCategoryVo.class;
    }

    public void setArticleService(ArticleServiceImpl articleService) {
        this.articleService = articleService;
    }

    private ArticleServiceImpl articleService;
}