package com.tanpu.community.manager;

import com.tanpu.common.exception.BizException;
import com.tanpu.common.util.JsonUtil;
import com.tanpu.community.api.beans.qo.ESThemeQo;
import com.tanpu.community.api.beans.qo.FormerThemeQo;
import com.tanpu.community.api.beans.qo.ThemeContentQo;
import com.tanpu.community.api.beans.qo.ThemeQo;
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.dao.entity.community.*;
import com.tanpu.community.dao.entity.user.UserInfoEntity;
import com.tanpu.community.service.*;
import com.tanpu.community.service.base.ESService;
import com.tanpu.community.util.ConvertUtil;
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;

@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 RankService rankService;

    @Autowired
    private ESService esService;

    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;
    }

    @Transactional
    public CreateThemeResp publishTheme(CreateThemeReq req, String userId) {

        //TODO 敏感词过滤

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

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

    /**
     * 返回主题列表
     *
     * @param req
     * @param userId
     * @return
     */
    public List<ThemeQo> queryThemes(ThemeListReq req, String userId) {
        List<ThemeEntity> themeEntities = new ArrayList<>();
        if (ThemeListTypeEnum.RECOMMEND.getCode().equals(req.getType())) {
            // TODO:推荐
//            themeEntities = themeService.selectExcludeUser(userId, req.getLastId(), req.getPageSize());
            List<String> recommendThemeIds = rankService.getHotAndNewThemes(100, 100);
            themeEntities = themeService.queryByThemeIdsExcludeUser( recommendThemeIds,userId, req.getLastId(), req.getPageSize());

        } else if (ThemeListTypeEnum.FOLLOW.getCode().equals(req.getType())) {
            //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())) {
            //TODO 根据话题查询热门
            if (StringUtils.isEmpty(req.getTopicId())) throw new BizException("TopicId为空");
            themeEntities = themeService.queryByTopic(req.getTopicId(), req.getLastId(), req.getPageSize());
        } else if (ThemeListTypeEnum.TOPIC_LATEST.getCode().equals(req.getType())) {
            //TODO 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、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 = new ArrayList<>();
                //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;
            case 3://点赞
                Set<String> likeThemeIds = collectionService.getListByUser(req.getLastId(), CollectionTypeEnum.LIKE_THEME);
                themeEntities = themeService.queryByThemeIds(new ArrayList<>(likeThemeIds), req.getLastId(), req.getPageSize());
                break;
            case 4://收藏
                Set<String> collectThemeIds = collectionService.getListByUser(req.getLastId(), 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) {
        ThemeEntity themeEntity = themeService.queryByThemeId(themeId);
        if (themeEntity == null) {
            throw new BizException("找不到帖子id：" + themeId);
        }
        ThemeQo themeQo = ConvertUtil.themeEntityToQo(themeEntity);
        batchFeignCallService.getAttachDetail(themeQo);
        buildThemeQoExtraInfo(userId, 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);
        }
    }

    //转发
    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();
    }


    //    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);
        }
    }

    // 解除屏蔽(用户)
    public void unblockUser(String blockUser, String userId) {
        //todo
    }

    // 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(userId, themeQO);
        }

        return themeQos;
    }


    //组装主题详情
    private void buildThemeQoExtraInfo(String userId, ThemeQo themeQo) {

        //封装转发对象
        buildFormerTheme(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);
        //点赞，收藏，转发
        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);
        themeQo.setCommentCount(commentCount);
        themeQo.setLikeCount(likeCount);
        themeQo.setForwardCount(forwardCount);
    }


    //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);
            }

        }
    }


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

    //投诉（主题）
    public void complaint(String themeId, String user) {
        //TODO
    }

    public Integer getFollowUpdateCount(String userId) {
        LocalDateTime lastViewTime = visitSummaryService.queryLatestViewFollow(userId);
        List<String> fansList = followRelService.queryFansByFollowerId(userId);
        return themeService.queryCountFromLastTime(fansList, lastViewTime);
    }


}