package com.tanpu.community.service;

import com.tanpu.common.api.CommonResp;
import com.tanpu.common.exception.BizException;
import com.tanpu.community.api.beans.qo.ThemeAnalysDO;
import com.tanpu.community.api.beans.qo.TopicRankQo;
import com.tanpu.community.api.beans.vo.feign.fatools.UserInfoNew;
import com.tanpu.community.api.enums.CollectionTypeEnum;
import com.tanpu.community.api.enums.TopicStatusEnum;
import com.tanpu.community.cache.RedisCache;
import com.tanpu.community.dao.entity.community.ThemeEntity;
import com.tanpu.community.dao.entity.community.TopicEntity;
import com.tanpu.community.feign.fatools.FeignClientForFatools;
import com.tanpu.community.util.ConvertUtil;
import org.apache.commons.collections4.CollectionUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.*;
import java.util.stream.Collectors;

import static com.tanpu.community.api.constants.RedisKeyConstant.CACHE_FEIGN_USER_INFO;

@Service
public class RankService {
    @Autowired
    private ThemeService themeService;
    @Autowired
    private CollectionService collectionService;
    @Autowired
    private CommentService commentService;
    @Autowired
    private TopicService topicService;
    @Autowired
    private VisitSummaryService visitSummaryService;

    @Autowired
    private RedisCache redisCache;

    @Resource
    private FeignClientForFatools feignClientForFatools;

    //最热
    private List<ThemeAnalysDO> rankThemeList = new ArrayList<>();


    private List<TopicRankQo> rankTopicList = new ArrayList<>();
    private List<TopicRankQo> rankTopicListTop4 = new ArrayList<>();


    /**
     * 计算主题热度排行
     */
    public void rankThemes() {
        //7天内所有主题进行热度值排序
        List<ThemeEntity> themeEntities = themeService.queryRecentdays(7);
        List<ThemeAnalysDO> themeAnalysDOS = ConvertUtil.themeEntityToAnalysDOs(themeEntities);
        for (ThemeAnalysDO theme : themeAnalysDOS) {
            String themeId = theme.getThemeId();
            Integer likeCount = collectionService.getCountByTypeAndId(themeId, CollectionTypeEnum.LIKE_THEME);
            Integer bookCount = collectionService.getCountByTypeAndId(themeId, CollectionTypeEnum.COLLECT_THEME);
            Integer commentCount = commentService.getCommentCountByThemeId(themeId);
            Integer forwardCount = themeService.getForwardCountById(themeId);
            Integer viewCount = visitSummaryService.queryThemeVisit(themeId);
            theme.setCommentCount(commentCount);
            theme.setLikeCount(likeCount);
            theme.setForwardCount(forwardCount);
            theme.setCollectCount(bookCount);
            theme.setViewCount(viewCount);
            //查询用户质量
            String authorId = theme.getAuthorId();
            UserInfoNew authorInfo = redisCache.getObject(StringUtils.joinWith(CACHE_FEIGN_USER_INFO, authorId),
                    60 * 10, () -> this.getUserInfo(authorId), UserInfoNew.class);
            if (authorInfo == null || authorInfo.getLevelGrade() == null) {
                theme.setUserWeight(0.0);

            } else {
                theme.setUserWeight(authorInfo.getLevelGrade() * 1.0);

            }
        }
        //打分
        Map<ThemeAnalysDO, Double> map = themeAnalysDOS.stream().collect(Collectors.toMap(o -> o, ThemeAnalysDO::getScore));
        //排序
        rankThemeList = map.entrySet().stream().sorted(Map.Entry.comparingByValue(Comparator.reverseOrder())).map(e -> e.getKey()).collect(Collectors.toList());

    }

    private UserInfoNew getUserInfo(String authorId) {
        CommonResp<UserInfoNew> userInfoNewCommonResp = feignClientForFatools.queryUsersListNew(authorId);
        if (userInfoNewCommonResp.isNotSuccess()) {
            throw new BizException("内部接口调用失败");
        }
        return userInfoNewCommonResp.getData();
    }


    /**
     * 计算话题热度
     *
     * @return
     */
    public void rankTopics() {
        List<TopicEntity> topicEntities = topicService.queryAll();
        List<TopicRankQo> topicRankQos = ConvertUtil.topicEntityToHotQos(topicEntities);
        if (topicRankQos.size() == 0) {
            return;
        }
        for (TopicRankQo topic : topicRankQos) {
            List<String> themeIds = themeService.queryThemeIdsByTopic(topic.getTopicId());
            if (CollectionUtils.isEmpty(themeIds)) {
                topic.setViewCount(0);
                topic.setDisscussCount(0);
                continue;
            }
            //浏览量
            Integer topicPV = visitSummaryService.queryTopicDetailVisit(topic.getTopicId());
            Integer themePV = visitSummaryService.queryThemeVisit(themeIds);
            topic.setViewCount(topicPV + themePV);
            //讨论数=发布主题贴数+回复总数
            Integer commentCount = commentService.getCommentCountByThemeIds(themeIds);
            topic.setDisscussCount(themeIds.size() + commentCount);
        }
        Map<TopicRankQo, Integer> map = topicRankQos.stream().collect(Collectors.toMap(o -> o, TopicRankQo::getRank));
        List<TopicRankQo> rankList = map.entrySet().stream().sorted(Map.Entry.comparingByValue(Comparator.reverseOrder())).map(Map.Entry::getKey).collect(Collectors.toList());
        rankList.get(0).setType(TopicStatusEnum.HOTTEST.getCode());
        this.rankTopicList = rankList;
        this.rankTopicListTop4 = rankList.stream().limit(4).collect(Collectors.toList());
        return;

    }

    /**
     * 最新和热门主题集合
     *
     * @param hotCount
     * @param newCount
     * @return
     */
    public List<String> getHotAndNewThemes(Integer hotCount, Integer newCount, String userId) {
        Set<String> hotThemeIds = this.rankThemeList.stream().limit(hotCount)
                .filter(o -> !userId.equals(o.getAuthorId()))
                .map(ThemeAnalysDO::getThemeId)
                .collect(Collectors.toSet());
        Set<String> newThemeIds = themeService.selectExcludeUser(null, null, newCount)
                .stream().map(ThemeEntity::getThemeId).collect(Collectors.toSet());
        hotThemeIds.addAll(newThemeIds);
        return new ArrayList<>(hotThemeIds);
    }

    /**
     * 话题详情
     *
     * @param topicId 话题Id
     * @return
     */
    public TopicRankQo getTopicDetail(String topicId) {
        if (this.rankTopicList.size() == 0) {
            rankTopics();
        }
        List<TopicRankQo> matchTopic = this.rankTopicList.stream().filter(o -> topicId.equals(o.getTopicId())).limit(1).collect(Collectors.toList());
        matchTopic.add(new TopicRankQo());
        return matchTopic.get(0);
    }


    public List<TopicRankQo> getRankTopicList(String keyword) {
        if (this.rankTopicList.size() == 0) {
            this.rankTopics();
        }
        if (StringUtils.isEmpty(keyword)){
            return rankTopicList;
        }else {
            //过滤关键字
            return this.rankTopicList.stream().filter(o->o.getTopicTitle().contains(keyword)).collect(Collectors.toList());
        }
    }

    public List<TopicRankQo> getRankTopicListTop4() {
        if (this.rankTopicList.size() == 0) {
            this.rankTopics();
        }
        return rankTopicListTop4;
    }

    public List<ThemeAnalysDO> getRankThemeList() {
        if (this.rankThemeList.size() == 0) {
            rankThemes();
        }
        return rankThemeList;
    }

    public List<String> getRankThemeListByTopic(String topicId) {
        if (this.rankThemeList.size() == 0) {
            this.rankThemes();
        }
        return rankThemeList.stream().filter(o -> topicId.equals(o.getTopicId()))
                .map(ThemeAnalysDO::getThemeId)
                .collect(Collectors.toList());
    }
}