package com.tanpu.community.manager;

import com.google.common.collect.Sets;
import com.tanpu.common.api.CommonResp;
import com.tanpu.common.exception.BizException;
import com.tanpu.common.util.JsonUtil;
import com.tanpu.community.api.beans.qo.*;
import com.tanpu.community.api.beans.req.homepage.QueryRecordThemeReq;
import com.tanpu.community.api.beans.req.theme.*;
import com.tanpu.community.api.beans.resp.CreateThemeResp;
import com.tanpu.community.api.beans.resp.ThemeFullSearchResp;
import com.tanpu.community.api.enums.*;
import com.tanpu.community.cache.RedisCache;
import com.tanpu.community.dao.entity.community.*;
import com.tanpu.community.dao.entity.user.UserInfoEntity;
import com.tanpu.community.feign.fatools.FeignClientForFatools;
import com.tanpu.community.service.*;
import com.tanpu.community.service.base.ESService;
import com.tanpu.community.util.ConvertUtil;
import com.tanpu.community.util.RankUtils;
import com.tanpu.community.util.TencentcloudUtils;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.collections4.CollectionUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.exception.ExceptionUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

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

import static com.tanpu.community.api.constants.RedisKeyConstant.CACHE_FORMER_THEME_ID;
import static com.tanpu.community.api.constants.RedisKeyConstant.CACHE_THEME_ID;

@Slf4j
@Service
public class ThemeManager {
    @Resource
    private ThemeService themeService;

    @Autowired
    private CollectionService collectionService;

    @Autowired
    private CommentService commentService;

    @Autowired
    private FollowRelService followRelService;

    @Autowired
    private BlackListService blackListService;

    @Autowired
    private UserInfoService userInfoService;

    @Autowired
    private ThemeAttachmentService themeAttachmentService;

    @Resource
    private BatchFeignCallService batchFeignCallService;

    @Autowired
    private VisitSummaryService visitSummaryService;

    @Autowired
    private ReportLogService reportLogService;

    @Autowired
    private RankService rankService;

    @Autowired
    private ESService esService;

    @Autowired
    private FeignClientForFatools feignClientForFatools;

    @Autowired
    private RedisCache redisCache;

    @Autowired
    private RecommendService recommendService;

    public ThemeFullSearchResp themeFullSearch(String keyword, Integer pageNo, Integer pageSize, List<String> excludeIds, String userId) {
        Integer from = (pageNo - 1) * pageSize;
        ThemeFullSearchResp resp = new ThemeFullSearchResp();

        // 按时间倒叙查询
        // todo redis
        List<ESThemeQo> esIds = esService.queryThemeIdByContentAndTitle(keyword, from, pageSize * 5);
        if (esIds.isEmpty()) {
            return resp;
        }

        // 排除已经展示过的id
        List<String> filterEsIds = esIds.stream().map(ESThemeQo::getThemeId).filter(tId -> {
            return !excludeIds.contains(tId);
        }).limit(pageSize).collect(Collectors.toList());

        resp.themes = convertEntityToQo(themeService.queryByThemeIds(filterEsIds), userId);
        resp.excludeIds.addAll(filterEsIds);

        return resp;
    }


    /**
     * 发表主题（可修改）
     */
    @Transactional
    public CreateThemeResp publishTheme(CreateThemeReq req, String userId) {

        //保存主题表
        ThemeEntity themeEntity = new ThemeEntity();
        BeanUtils.copyProperties(req, themeEntity);
        themeEntity.setAuthorId(userId);
        themeEntity.setContent(JsonUtil.toJson(req.getContent()));

        //腾讯云敏感词校验
        checkContent(themeEntity.getContent());

        if (StringUtils.isEmpty(req.getEditThemeId())) {
            //新建
            themeService.insertTheme(themeEntity);
        } else {
            //修改
            themeService.update(themeEntity, req.getEditThemeId());
            themeEntity.setThemeId(req.getEditThemeId());
        }
        //保存附件表
        List<ThemeAttachmentEntity> themeAttachments = ConvertUtil.themeReqToAttachmentList(req, themeEntity.getThemeId());
        if (StringUtils.isNotEmpty(req.getEditThemeId())) {
            //修改需要刪除
            themeAttachmentService.deleteByThemeId(req.getEditThemeId());
        }
        themeAttachmentService.insertList(themeAttachments);

        try {
            esService.insertOrUpdateTheme(ConvertUtil.convert(themeEntity));
        } catch (Exception e) {
            log.error("error in save theme to ES. themeId:{}, error:{}", themeEntity.getThemeId(), ExceptionUtils.getStackTrace(e));
        }

        redisCache.evict(StringUtils.joinWith("_", CACHE_THEME_ID, themeEntity.getThemeId()));

        return CreateThemeResp.builder().themeId(themeEntity.getThemeId()).build();
    }

    //转发主题
    public CreateThemeResp forward(ForwardThemeReq req, String userId) {
        ThemeEntity targetTheme = themeService.queryByThemeId(req.getFormerThemeId());
        ThemeEntity themeEntity = ThemeEntity.builder()
                .content(JsonUtil.toJson(req.getContent()))
                .topicId(req.getTopicId())
                .formerThemeId(req.getFormerThemeId())
                .authorId(userId)
                .themeType(ThemeTypeEnum.FORWARD.getCode())
                .build();

        if (StringUtils.isEmpty(req.getEditThemeId()) || req.getEditThemeId() == req.getFormerThemeId()) {
            //新建
            themeService.insertTheme(themeEntity);
        } else {
            //修改
            themeService.update(themeEntity, req.getEditThemeId());
            themeEntity.setThemeId(req.getEditThemeId());

        }
        return CreateThemeResp.builder().themeId(themeEntity.getThemeId()).build();
    }


    //查询主题列表：推荐/关注/热门/最新
    public List<ThemeQo> queryThemes(ThemeListReq req, String userId) {
        List<ThemeEntity> themeEntities = new ArrayList<>();
        if (ThemeListTypeEnum.RECOMMEND.getCode().equals(req.getType())) {
            //推荐
            List<String> recommendThemeIds = recommendService.getRecommendThemes(req.getLastId(), req.getPageSize(), userId);
            themeEntities = themeService.queryByThemeIds(recommendThemeIds);
            themeEntities = RankUtils.sortThemeEntityByIds(themeEntities, recommendThemeIds);
        } else if (ThemeListTypeEnum.FOLLOW.getCode().equals(req.getType())) {
            //关注
            if (StringUtils.isEmpty(req.getLastId())) {
                visitSummaryService.addPageView(userId, userId, VisitTypeEnum.FOLLOW_THEME_VIEW);
            }
            //根据关注列表查询
            List<String> fansList = followRelService.queryFansByFollowerId(userId);
            themeEntities = themeService.queryByUserIds(fansList, req.getLastId(), req.getPageSize());

        } else if (ThemeListTypeEnum.TOPIC_HOT.getCode().equals(req.getType())) {
            //根据话题查询热门
            if (StringUtils.isEmpty(req.getTopicId())) throw new BizException("TopicId为空");
            List<String> rankThemeIds = rankService.getRankThemeListByTopic(req.getTopicId());
            themeEntities = themeService.queryByThemeIdsExcludeUser(rankThemeIds, null, req.getLastId(), req.getPageSize());
            themeEntities = RankUtils.sortThemeEntityByIds(themeEntities, rankThemeIds);


        } else if (ThemeListTypeEnum.TOPIC_LATEST.getCode().equals(req.getType())) {
            //根据话题查询最新
            if (StringUtils.isEmpty(req.getTopicId())) throw new BizException("TopicId为空");
            themeEntities = themeService.queryByTopic(req.getTopicId(), req.getLastId(), req.getPageSize());
        }

        //组装详情
        return convertEntityToQo(themeEntities, userId);
    }

    public List<ThemeQo> searchThemes(ThemeSearchReq req, String userId) {

        List<ThemeEntity> themeEntities = themeService.search(req.getKeyword(), req.getLastId(), req.getPageSize());
        return convertEntityToQo(themeEntities, userId);
    }


    // 返回用户发布、回复、点赞、收藏的主题列表
    public List<ThemeQo> queryThemesByUser(QueryRecordThemeReq req, String userId) {

        List<ThemeEntity> themeEntities = Collections.emptyList();
        switch (req.getRecordType()) {
            case 1://发布
                themeEntities = themeService.queryThemesByUserId(req.getUserId(), req.getLastId(), req.getPageSize());
                break;
            case 2://回复

                List<ThemeQo> commentThemeList = getCommentThemeQos(req, userId);
                return commentThemeList;
            case 3://点赞
                Set<String> likeThemeIds = collectionService.getListByUser(req.getUserId(), CollectionTypeEnum.LIKE_THEME);
                themeEntities = themeService.queryByThemeIds(new ArrayList<>(likeThemeIds), req.getLastId(), req.getPageSize());
                break;
            case 4://收藏
                Set<String> collectThemeIds = collectionService.getListByUser(req.getUserId(), CollectionTypeEnum.COLLECT_THEME);
                themeEntities = themeService.queryByThemeIds(new ArrayList<>(collectThemeIds), req.getLastId(), req.getPageSize());
                break;
        }
        List<ThemeQo> themeQos = convertEntityToQo(themeEntities, userId);
        return themeQos;
    }


    //查询正文
    public ThemeQo getDetail(String themeId, String userId) {
        //进入详情
        visitSummaryService.addPageView(userId, themeId, VisitTypeEnum.THEME_PAGE_VIEW);

        ThemeQo themeQo = redisCache.getObject(StringUtils.joinWith("_", CACHE_THEME_ID, themeId), 60,
                () -> this.getDetailForCommon(themeId), ThemeQo.class);

        buildThemeExtraInfoByUser(userId,themeQo);
        return themeQo;
    }

    //正文通用信息,与用户无关，可使用缓存
    private ThemeQo getDetailForCommon(String themeId) {
        ThemeEntity themeEntity = themeService.queryByThemeId(themeId);
        if (themeEntity == null) {
            throw new BizException("找不到帖子id：" + themeId);
        }
        ThemeQo themeQo = ConvertUtil.themeEntityToQo(themeEntity);
        //附件
        batchFeignCallService.getAttachDetail(themeQo);

        //转发、收藏、点赞
        buildThemeQoExtraInfo( themeQo);

        return themeQo;
    }



    // 点赞/取消点赞
    public void like(LikeThemeReq req, String userId) {
        if (OperationTypeEnum.CONFIRM.getCode().equals(req.getType())) {
            collectionService.addIfNotExist(req.getThemeId(), userId, CollectionTypeEnum.LIKE_THEME);
        } else if (OperationTypeEnum.CANCEL.getCode().equals(req.getType())) {
            collectionService.delete(req.getThemeId(), userId, CollectionTypeEnum.LIKE_THEME);
        }

    }

    //收藏/取消收藏
    public void collect(CollectThemeReq req, String userId) {
        if (OperationTypeEnum.CONFIRM.getCode().equals(req.getType())) {
            collectionService.addIfNotExist(req.getThemeId(), userId, CollectionTypeEnum.COLLECT_THEME);
        } else if (OperationTypeEnum.CANCEL.getCode().equals(req.getType())) {
            collectionService.delete(req.getThemeId(), userId, CollectionTypeEnum.COLLECT_THEME);
        }
    }

    //举报主题
    public void report(ReportThemeReq req, String userId) {
        //更改举报状态
        themeService.updateReportStatus(req.getThemeId());
        //写入举报记录表
        ThemeEntity themeEntity = themeService.queryByThemeId(req.getThemeId());
        reportLogService.insert(ReportTypeEnum.THEME, userId, req.getThemeId(), themeEntity.getAuthorId(), req.getReason());
    }


    //关注用户是否有更新
    public Integer getFollowUpdateCount(String userId) {
        LocalDateTime lastViewTime = visitSummaryService.queryLatestViewFollow(userId);
        List<String> fansList = followRelService.queryFansByFollowerId(userId);
        return themeService.queryCountFromLastTime(fansList, lastViewTime);
    }

    //    屏蔽(用户)
    public void blockUser(String blockUser, String userId) {
        BlackListEntity selectOne = blackListService.selectOne(blockUser, userId, BlockTypeEnum.USER.getCode());
        if (selectOne == null) {
            blackListService.addBlock(blockUser, userId, BlockTypeEnum.USER);
        }
    }

    // 屏蔽(主题)
    public void blockTheme(String themeId, String userId) {
        blackListService.addBlock(themeId, userId, BlockTypeEnum.THEME);
        BlackListEntity selectOne = blackListService.selectOne(themeService.queryByThemeId(themeId).getAuthorId(), userId, BlockTypeEnum.USER.getCode());
        if (selectOne == null) {
            blackListService.addBlock(themeService.queryByThemeId(themeId).getAuthorId(), userId, BlockTypeEnum.USER);
        }
    }

    // 解除屏蔽(主题)
    public void unblockTheme(String themeId, String userId) {
        blackListService.removeBlackList(themeId, userId, BlockTypeEnum.USER);
    }


    //主题Entity转QO
    private List<ThemeQo> convertEntityToQo(List<ThemeEntity> themeEntities, String userId) {
        //Entity转Qo
        List<ThemeQo> themeQos = ConvertUtil.themeEntitiesToDTOs(themeEntities);
        //批量查询附件detail
        batchFeignCallService.getAttachDetailByBatch(themeQos);
        //其他信息
        for (ThemeQo themeQO : themeQos) {
            buildThemeQoExtraInfo( themeQO);
            buildThemeExtraInfoByUser(userId,themeQO);
        }

        return themeQos;
    }


    //转发对象、点赞、收藏、转发数
    private void buildThemeQoExtraInfo( ThemeQo themeQo) {
        String themeId = themeQo.getThemeId();
        //封装转发对象
        FormerThemeQo former = redisCache.getObject(StringUtils.joinWith("_", CACHE_FORMER_THEME_ID, themeId), 60,
                () -> this.getFormerTheme(themeQo.getFormerThemeId()), FormerThemeQo.class);
        themeQo.setFormerTheme(former);
        //点赞，收藏，转发
        Integer likeCount = collectionService.getCountByTypeAndId(themeId, CollectionTypeEnum.LIKE_THEME);
        Integer commentCount = commentService.getCommentCountByThemeId(themeId);
        Integer forwardCount = themeService.getForwardCountById(themeId);
        themeQo.setCommentCount(commentCount);
        themeQo.setLikeCount(likeCount);
        themeQo.setForwardCount(forwardCount);
    }

    //组装和当前用户相关信息
    private void buildThemeExtraInfoByUser(String userId, ThemeQo themeQo){
        String themeId = themeQo.getThemeId();
        //是否关注作者
        String authorId = themeQo.getAuthorId();
        Set<String> fansSet = new HashSet<>(followRelService.queryFansByFollowerId(userId));
        themeQo.setFollow(fansSet.contains(authorId));
        //是否点赞
        CollectionEntity likeEntity = collectionService.getNotDeleteTargetCollection(themeId, userId, CollectionTypeEnum.LIKE_THEME);
        themeQo.setHasLiked(likeEntity != null);
        //是否转发
        Integer forwardCountByUser = themeService.getForwardCountByUser(themeId, userId);
        themeQo.setHasForward(forwardCountByUser > 0);
        //是否收藏
        CollectionEntity collectionEntity = collectionService.getNotDeleteTargetCollection(themeId, userId, CollectionTypeEnum.COLLECT_THEME);
        themeQo.setHasCollect(collectionEntity != null);
    }


    //组装被转发主题
    private void buildFormerTheme(ThemeQo themeQo) {
        String formerThemeId = themeQo.getFormerThemeId();
        if (StringUtils.isNotEmpty(formerThemeId)) {

            ThemeQo formerTheme = ConvertUtil.themeEntityToQo(themeService.queryByThemeId(formerThemeId));

            if (formerTheme != null) {

                //单个查询详情

                batchFeignCallService.getAttachDetail(formerTheme);
                FormerThemeQo f = ConvertUtil.themeQo2FormerThemeQo(formerTheme);
                themeQo.setFormerTheme(f);
            }

        }
    }

    //返回被转发主题
    private FormerThemeQo getFormerTheme(String formerThemeId) {
        if (StringUtils.isNotEmpty(formerThemeId)) {
            ThemeQo formerTheme = ConvertUtil.themeEntityToQo(themeService.queryByThemeId(formerThemeId));
            if (formerTheme != null) {
                batchFeignCallService.getAttachDetail(formerTheme);
                FormerThemeQo f = ConvertUtil.themeQo2FormerThemeQo(formerTheme);
                return f;
            }

        }
        return null;
    }


    //逻辑删除
    public void delete(String themeId) {
        themeService.deleteById(themeId);
    }


    /**
     * 腾讯云-内容检测
     *
     * @param content
     */
    private void checkContent(String content) {
        // 腾讯云接口最多支持5000文字校验，超过5000执行2次
        // 检查内容是否涉黄违法
        CommonResp commonResp = TencentcloudUtils.textModeration(content.length() > 5000 ? content.substring(0, 5000) : content);
        if (!commonResp.isSuccess()) {
            throw new BizException("内容校验失败，请检查内容后重新发送");
        }
        if (content.length() > 5000) {
            CommonResp commonResp2 = TencentcloudUtils.textModeration(content.substring(5000, content.length()));
            if (!commonResp2.isSuccess()) {
                throw new BizException("内容校验失败，请检查内容后重新发送");
            }
        }
        return;
    }


    /**
     * 直播类型做转播检查
     *
     * @param userId
     * @param contents
     */
    private void liveRelayCheck(String userId, List<ThemeContentReq> contents) {
        for (ThemeContentReq content : contents) {
            if (content != null && content.getType().equals(RelTypeEnum.LIVE.type)) {
                CommonResp<Set<String>> notRelayResp = feignClientForFatools.getNotRelaySet(userId, Sets.newHashSet(content.getValue()));
                if (!notRelayResp.isSuccess()) {
                    throw new BizException("转播失败");
                }
                if (CollectionUtils.isEmpty(notRelayResp.getData())) {
                    throw new BizException("9999", "很抱歉!您需要购买或报名成功后才可以添加这个直播哦~");
                }
            }
        }
    }


    /**
     * 查询用户评论过的主题，并封装成转发主题结构
     *
     * @param req
     * @param userId 当前用户
     * @return
     */
    private List<ThemeQo> getCommentThemeQos(QueryRecordThemeReq req, String userId) {
        List<ThemeQo> commentThemeList = new ArrayList<>();
        List<ThemeEntity> themeEntities;
        //评论列表
        List<CommentEntity> commentEntities = commentService.queryThemesByUserId(req.getUserId(), req.getLastId(), req.getPageSize());
        //当前用户信息
        UserInfoEntity userInfoEntity = userInfoService.queryUserById(req.getUserId());
        Set<String> replyThemeIds = commentEntities.stream().map(CommentEntity::getThemeId).collect(Collectors.toSet());
        if (CollectionUtils.isEmpty(replyThemeIds)) {
            return commentThemeList;
        }
        themeEntities = themeService.queryByThemeIds(new ArrayList<>(replyThemeIds));
        List<ThemeQo> themeQos = convertEntityToQo(themeEntities, userId);
        //组装附件
        batchFeignCallService.getAttachDetailByBatch(themeQos);
        //主题列表
        Map<String, ThemeQo> themeMap = themeQos.stream()
                .collect(Collectors.toMap(ThemeQo::getThemeId, o -> o));
        //主题+评论封装转发对象
        for (CommentEntity commentEntity : commentEntities) {
            String themeId = commentEntity.getThemeId();
            //评论内容包装到ThemeContentQo里
            ThemeContentQo commentContent = ThemeContentQo.builder()
                    .type(RelTypeEnum.TEXT.type)
                    .value(commentEntity.getContent())
                    .build();
            //原主题包装到FormerThemeQo中
            ThemeQo themeQo = themeMap.get(themeId);
            FormerThemeQo f = ConvertUtil.themeQo2FormerThemeQo(themeQo);
            //ThemeContentQo和原主题包装到FormerThemeQo中包装到ThemeQo中
            ThemeQo commentThemeQo = ThemeQo.builder()
                    .authorId(userInfoEntity.getId())
                    .nickName(userInfoEntity.getUiUsernameMp())
                    .userImg(userInfoEntity.getUiHeadimgMp())
                    .content(Arrays.asList(commentContent))
                    .formerTheme(f)
                    .commentId(commentEntity.getCommentId())
                    .themeType(ThemeTypeEnum.RES_COMMENT.getCode())
                    .build();

            commentThemeList.add(commentThemeQo);
        }
        return commentThemeList;
    }

}