package com.kwan.shuyu.service.impl;

import com.alibaba.fastjson.JSON;
import com.kwan.shuyu.domain.Content;
import com.kwan.shuyu.service.ContentService;
import com.kwan.shuyu.util.HtmlParseUtil;
import org.elasticsearch.action.bulk.BulkRequest;
import org.elasticsearch.action.bulk.BulkResponse;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.index.query.TermQueryBuilder;
import org.elasticsearch.search.SearchHit;
import org.elasticsearch.search.builder.SearchSourceBuilder;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@Service
public class ContentServiceImpl implements ContentService {

    @Autowired
    private HtmlParseUtil htmlParseUtil;
    @Autowired
    private RestHighLevelClient restHighLevelClient;

    /**
     * 解析数据放入es索引中
     *
     * @param keywords
     * @return
     * @throws Exception
     */
    @Override
    public Boolean parseContent(String keywords) throws Exception {
        List<Content> contents = htmlParseUtil.parseJD(keywords);
        //把查询出来的数据放入es里面
        BulkRequest bulkRequest = new BulkRequest();
        bulkRequest.timeout(TimeValue.timeValueMinutes(120));
        for (int i = 0; i < contents.size(); i++) {
            System.out.println(contents.get(i));
            bulkRequest.add(
                    new IndexRequest("jd_goods" + keywords, keywords + "")
                            .source(JSON.toJSONString(contents.get(i)), XContentType.JSON));
        }
        BulkResponse bulk = restHighLevelClient.bulk(bulkRequest, RequestOptions.DEFAULT);
        return !bulk.hasFailures();
    }

    /**
     * 获取这些数据实现搜索功能
     *
     * @param keyword
     * @param pageNo
     * @param pageSize
     * @return
     * @throws IOException
     */
    @Override
    public List<Map<String, Object>> searchPage(String keyword, int pageNo, int pageSize) throws IOException {
        if (pageNo <= 1) {
            pageNo = 1;
        }
        //条件搜索
        SearchRequest searchRequest = new SearchRequest("jd_goods");
        //资源构造器(封装查询条件)
        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();

        //分页
        sourceBuilder.from(pageNo);
        sourceBuilder.size(pageSize);

        //精准匹配
        TermQueryBuilder termQueryBuilder = QueryBuilders.termQuery("title", keyword);
        sourceBuilder.query(termQueryBuilder);
        sourceBuilder.timeout(new TimeValue(60, TimeUnit.SECONDS));

        //执行搜索
        searchRequest.source(sourceBuilder);
        SearchResponse searchResponse = restHighLevelClient.search(searchRequest, RequestOptions.DEFAULT);

        //解析结果
        List<Map<String, Object>> list = new ArrayList<>();
        for (SearchHit documentFields : searchResponse.getHits().getHits()) {
            list.add(documentFields.getSourceAsMap());
        }
        return list;
    }
}