package com.tanpu.community.service;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.tanpu.biz.common.enums.clue.PageEnum;
import com.tanpu.community.api.enums.DeleteTagEnum;
import com.tanpu.community.cache.RedisCache;
import com.tanpu.community.dao.entity.community.TimesCountEntity;
import com.tanpu.community.dao.entity.community.VisitLogEntity;
import com.tanpu.community.dao.mapper.community.VisitLogMapper;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.collections4.CollectionUtils;
import org.apache.commons.collections4.ListUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.time.DateUtils;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.annotation.Resource;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import static com.tanpu.biz.common.enums.clue.PageEnum.COMM_VISIT_TOPIC_DETAIL;

@Slf4j
@Service
public class VisitLogService {

    @Resource
    private VisitLogMapper visitLogMapper;

    @Resource
    private RedisCache redisCache;

    // 获取用户7天内访问过的
    public List<String> queryUserRecentVisited(String userId) {
        Date endDate = new Date();
        Date startDate = DateUtils.addDays(endDate, -7);
        List<String> visited = visitLogMapper.selectRefIdByVisitorIdAndCreateBetween(userId, startDate, endDate);
        return visited;
    }

    // 从refIds中去掉用户已经访问过的
    public List<String> filterUserNotVisited(String userId, List<String> refIds) {
        if (refIds.isEmpty()) {
            return refIds;
        }
        List<String> visited = visitLogMapper.selectList(new LambdaQueryWrapper<VisitLogEntity>()
                .eq(VisitLogEntity::getVisitorId, userId)
                .in(VisitLogEntity::getRefId, refIds))
                .stream().map(VisitLogEntity::getRefId).distinct().collect(Collectors.toList());
        return ListUtils.subtract(refIds, visited);
    }

    public List<String> queryUserVisited(String userId) {
        List<String> visited = visitLogMapper.selectList(new LambdaQueryWrapper<VisitLogEntity>()
                .eq(VisitLogEntity::getVisitorId, userId))
                .stream().map(VisitLogEntity::getRefId).distinct().collect(Collectors.toList());
        return visited;
    }


    @Transactional
    public void insertOrUpdateDur(VisitLogEntity vs) {
        // 分布式锁
        for (int i = 0; i < 5 * 10; i++) {
            String key = getVisitLogRedisKey(vs);
            String rand = String.valueOf((int) Math.floor(Math.random() * 100));
            if (redisCache.setIfAbsent(key, rand, 15)) {
                if (visitLogMapper.selectByIdentAndRefId(vs.getIdent(), vs.getRefId(), vs.getRefType()) == null) {
                    visitLogMapper.insert(vs);
                } else {
                    visitLogMapper.updateDurByIdent(vs.getDuration(), vs.getIdent(), vs.getRefId(), vs.getRefType());
                }
                redisCache.evict(key + ":" + rand);
                return;
            }
            try {
                Thread.sleep(200);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

    private String getVisitLogRedisKey(VisitLogEntity vs) {
        return StringUtils.join("insertOrUpdateDur:", vs.getIdent().substring(0, 4), vs.getRefId(), vs.getRefType());
    }

    @Transactional
    //TODO 临时埋点，接入新埋点后删除
    public void addPageView(String userId, String targetId, PageEnum type) {
        visitLogMapper.insert(VisitLogEntity.builder()
                .visitorId(userId)
                .refId(targetId)
                .refType(type.getId())
                .duration(0)
                .build());
    }

    // 查询话题 详细页面 浏览量
    public Integer queryTopicDetailVisit(String topicId) {
        return visitLogMapper.selectCount(new LambdaQueryWrapper<VisitLogEntity>()
                .eq(VisitLogEntity::getRefId, topicId)
                .eq(VisitLogEntity::getRefType, COMM_VISIT_TOPIC_DETAIL.getId()));
    }

    // 查询主题 浏览量
    public Integer queryThemeVisit(String theme) {
        return visitLogMapper.selectCount(new LambdaQueryWrapper<VisitLogEntity>()
                .eq(VisitLogEntity::getRefId, theme)
                .eq(VisitLogEntity::getRefType, PageEnum.COMM_VISIT_THEME.getId()));
    }

    // 查询主题 浏览量
    public Integer queryThemeVisit(List<String> themes) {
        if (CollectionUtils.isEmpty(themes)) {
            return 0;
        }
        return visitLogMapper.selectCount(new LambdaQueryWrapper<VisitLogEntity>()
                .in(VisitLogEntity::getRefId, themes)
                .eq(VisitLogEntity::getRefType, PageEnum.COMM_VISIT_THEME.getId()));
    }


    //统计行为集合的浏览量
    public Map<String, Integer> getCountMapByTargetIds(List<String> refIds, String refType) {
        if (CollectionUtils.isEmpty(refIds)) {
            return new HashMap<>();
        }
        LambdaQueryWrapper<VisitLogEntity> wrapper = (new LambdaQueryWrapper<VisitLogEntity>()
                .in(VisitLogEntity::getRefId, refIds))
                .eq(VisitLogEntity::getDeleteTag, DeleteTagEnum.NOT_DELETED)
                .eq(VisitLogEntity::getRefType, refType)
                .groupBy(VisitLogEntity::getRefId);
        return visitLogMapper.selectCountByThemeIds(wrapper).stream()
                .collect(Collectors.toMap(TimesCountEntity::getId, TimesCountEntity::getTimes));
    }

    // 查询讨论区最近浏览
    public Integer queryLastTopicVisit(String theme) {
        return visitLogMapper.selectCount(new LambdaQueryWrapper<VisitLogEntity>()
                .eq(VisitLogEntity::getRefId, theme)
                .eq(VisitLogEntity::getRefType, PageEnum.COMM_VISIT_THEME.getId()));
    }


}