package com.winhc.phoenix.example.service.impl;

import com.winhc.phoenix.example.dao.SearchDao;
import com.winhc.phoenix.example.service.LegislationService;
import com.winhc.phoenix.example.util.BigDecimalUtil;
import com.winhc.phoenix.example.util.company.search.CompanyIndexUtils;
import com.winhc.phoenix.example.vo.legislation.LegislationSearchType;
import com.winhc.phoenix.example.vo.legislation.LegislationSearchVo;
import lombok.AllArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.elasticsearch.common.lucene.search.function.CombineFunction;
import org.elasticsearch.index.query.BoolQueryBuilder;
import org.elasticsearch.index.query.QueryBuilder;
import org.elasticsearch.index.query.functionscore.FunctionScoreQueryBuilder;
import org.elasticsearch.index.query.functionscore.ScriptScoreFunctionBuilder;
import org.elasticsearch.script.Script;
import org.springframework.stereotype.Service;

import java.time.LocalDate;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import static org.elasticsearch.index.query.QueryBuilders.*;

/**
 * @author: XuJiakai
 * 2022/9/2 11:38
 */
@Slf4j
@Service
@AllArgsConstructor
public class LegislationServiceImpl implements LegislationService {


    private final SearchDao searchDao;
    public static final String index = "legislation_info_fx_v1";
    public static final String type = "legislation_info_fx_type";

    private static final List<String> highlightField = new ArrayList<String>() {{
        add("title");
        add("content");
        add("title.keyword");
    }};

    private static final String SCRIPT_TEXT = "double d = 1.0d;if(doc['effect'].value!=null){String effect =doc['effect'].value;if(effect.contains(\"法律\")){if(\"法律\".equals(effect)){if(\"全国人民代表大会\".equals(doc['agency.keyword'].value)){d+=7.9;}else if(\"全国人大常委会\".equals(doc['agency.keyword'].value)){d+=7.8;}}else if (\"法律解释\".equals(effect)){d+=6.7}}else if(\"司法解释\".equals(effect)){d+=6.5;}else if(\"司法指导性文件\".equals(effect)){d+=5.0;}else if(\"行政法规\".equals(effect)){d+=5.0;}else if(effect.contains(\"地方性法规\")){if(effect.contains(\"市地方性法规\")||effect.contains(\"州地方性法规\")){d+=4.0;}else{d+=4.5;}}else if(\"部门规章\".equals(effect)){d+=3.8}else if(\"地方政府规章\".equals(effect)){if(doc['agency.keyword'].value!=null){String agency = doc['agency.keyword'].value;if(agency.contains(\"省人民政府\")||agency.contains(\"自治区人民政府\")||agency.equals(\"北京市人民政府\")||agency.equals(\"上海市人民政府\")||agency.equals(\"天津市人民政府\")||agency.equals(\"重庆市人民政府\")){d+=3.3}else{d+=3.0}}}else if(\"地方司法文件\".equals(effect)){if(doc['agency.keyword'].value!=null){String agency = doc['agency.keyword'].value;if(agency.contains(\"高级人民法院\")||agency.contains(\"省人民检察院\")){d+=2.5;}else{d+=2.0}}}else if(effect.contains(\"规范性文件\")){if(effect.contains(\"国务院\")){d+=1.8;}else if(effect.contains(\"部门\")){d+=1.6;}else if (effect.contains(\"地方\")){if(doc['agency.keyword'].value!=null){String agency = doc['agency.keyword'].value;if(agency.contains(\"省人民政府\")||agency.contains(\"自治区人民政府\")||agency.equals(\"北京市人民政府\")||agency.equals(\"上海市人民政府\")||agency.equals(\"天津市人民政府\")||agency.equals(\"重庆市人民政府\")){d+=1.5;}else{d+=1;}}}}}String timeliness = doc['timeliness'].value;if(timeliness!=null){if(timeliness.contains(\"失效\")){d=d/2;}if(timeliness.contains(\"已被修改\")){d = d-0.3;}}long date = doc['implement_date'].value/(24l*60*60*365*1000);if(date >20){d=d + Math.abs(20-date)*params.der;}return d;";


    private static QueryBuilder queryUnit(LegislationSearchType queryScope, String content) {
        BoolQueryBuilder boolQuery = boolQuery();

        switch (queryScope) {
            case TITLE:
                boolQuery.filter(boolQuery()
                        .should(matchQuery("title", content))
                        .should(termQuery("title.keyword", content))
                );
                boolQuery.should(disMaxQuery()
                        .add(matchQuery("title.standard", content).minimumShouldMatch("100%").boost(20))
                        .add(matchQuery("title.trim", content).boost(20).minimumShouldMatch("100%"))
                        .add(termQuery("title.keyword", content).boost(100))
                        .tieBreaker(0.3f)
                );
                break;
            case CONTENT:
                boolQuery.should(disMaxQuery()
                        .add(matchPhraseQuery("content", content).boost(25))
                        .add(matchQuery("content", content).boost(20).minimumShouldMatch("100%"))
                        .add(matchQuery("content", content).boost(2))
                );
                break;
            default:


                boolQuery.should(boolQuery().filter(boolQuery()
//                        .should(matchQuery("content", content).minimumShouldMatch("100%"))
                        .should(matchQuery("title", content))
                        .should(termQuery("title.keyword", content))
                ).boost(0));

                boolQuery.should(boolQuery().filter(boolQuery()
                                .should(matchPhraseQuery("content", content))
                ).boost(25));

                boolQuery.should(boolQuery().filter(boolQuery()
                                .should(matchQuery("content", content).boost(20).minimumShouldMatch("100%"))
                ).boost(20));

                boolQuery.should(boolQuery().filter(boolQuery()
                                .should(matchQuery("content", content))
                ).boost(2));


                boolQuery.should(boolQuery().should(disMaxQuery()
//                        .add(matchPhraseQuery("content", content).boost(25))
//                        .add(matchQuery("content", content).boost(20).minimumShouldMatch("100%"))
//                        .add(matchQuery("content", content).boost(2))
                        .add(disMaxQuery()
                                .add(matchQuery("title.standard", content).minimumShouldMatch("100%").boost(20))
                                .add(matchQuery("title.trim", content).boost(20).minimumShouldMatch("100%"))
                                .add(termQuery("title.keyword", content).boost(100))
                                .tieBreaker(0.3f))
                ));
                break;
        }


        return boolQuery;
    }


    @Override
    public Object search(LegislationSearchVo of) {
        log.info("search legislation keyword: {}", of.getContent());

        BoolQueryBuilder boolQuery = boolQuery();

        for (Map.Entry<String, LegislationSearchType> entry : of.getContent().entrySet()) {
            String content = entry.getKey();
            LegislationSearchType value = entry.getValue();
            for (String s : content.split(" ")) {
                if (StringUtils.isBlank(s)) {
                    continue;
                }
                boolQuery.must(queryUnit(value, s));
            }
        }


        LocalDate now = LocalDate.now();
        int year = now.getYear();
        double d = year <= 1990 ? 0 : BigDecimalUtil.div(4, year - 1990, 4);

        Script script = CompanyIndexUtils.getScript(SCRIPT_TEXT, new HashMap<String, Object>(1) {
            {
                put("der", d);
            }
        });

        FunctionScoreQueryBuilder function = functionScoreQuery(boolQuery, new ScriptScoreFunctionBuilder(script))
                .boostMode(CombineFunction.MULTIPLY);

        String preference = of.getPreference();

        Object search = searchDao.search(index
                , type
//                , boolQuery
                , function
                , null
                , null
                , null
                , of.getFrom()
                , of.getSize()
                , preference
                , highlightField
                , null
        );
        return search;
    }
}