package org.dromara.system.service.impl;

import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
import jakarta.annotation.PostConstruct;
import org.dromara.common.core.utils.MapstructUtils;
import org.dromara.common.core.utils.StringUtils;
import org.dromara.common.json.utils.JsonUtils;
import org.dromara.common.mybatis.core.page.TableDataInfo;
import org.dromara.common.mybatis.core.page.PageQuery;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.dromara.common.redis.utils.RedisUtils;
import org.dromara.system.domain.constant.GameEventConstant;
import org.springframework.stereotype.Service;
import org.dromara.system.domain.bo.GameEventBo;
import org.dromara.system.domain.vo.GameEventVo;
import org.dromara.system.domain.GameEvent;
import org.dromara.system.mapper.GameEventMapper;
import org.dromara.system.service.IGameEventService;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
import java.util.Map;
import java.util.Collection;
import java.util.stream.Collectors;

/**
 * 赛事基本信息Service业务层处理
 *
 * @author zlt
 * @date 2025-07-30
 */
@Slf4j
@RequiredArgsConstructor
@Service
public class GameEventServiceImpl implements IGameEventService {

    private final GameEventMapper baseMapper;

    /**
     * 查询赛事基本信息
     *
     * @param eventId 主键
     * @return 赛事基本信息
     */
    @Override
    public GameEventVo queryById(Long eventId) {
        return baseMapper.selectVoById(eventId);
    }

    /**
     * 分页查询赛事基本信息列表
     *
     * @param bo        查询条件
     * @param pageQuery 分页参数
     * @return 赛事基本信息分页列表
     */
    @Override
    public TableDataInfo<GameEventVo> queryPageList(GameEventBo bo, PageQuery pageQuery) {
        LambdaQueryWrapper<GameEvent> lqw = buildQueryWrapper(bo);
        Page<GameEventVo> result = baseMapper.selectVoPage(pageQuery.build(), lqw);
        return TableDataInfo.build(result);
    }

    /**
     * 查询符合条件的赛事基本信息列表
     *
     * @param bo 查询条件
     * @return 赛事基本信息列表
     */
    @Override
    public List<GameEventVo> queryList(GameEventBo bo) {
        if (bo.getEventId() == null) {
            Object cacheObject = RedisUtils.getCacheObject(GameEventConstant.DEFAULT_EVENT_ID);
            if (cacheObject instanceof Integer) {
                bo.setEventId(((Integer) cacheObject).longValue());  // 显式转换为 Long 类型
            } else if (cacheObject instanceof Long) {
                bo.setEventId((Long) cacheObject);
            }
        }
        LambdaQueryWrapper<GameEvent> lqw = buildQueryWrapper(bo);
        return baseMapper.selectVoList(lqw);
    }

    private LambdaQueryWrapper<GameEvent> buildQueryWrapper(GameEventBo bo) {
        Map<String, Object> params = bo.getParams();
        LambdaQueryWrapper<GameEvent> lqw = Wrappers.lambdaQuery();
        lqw.orderByAsc(GameEvent::getEventId);
        lqw.eq(StringUtils.isNotBlank(bo.getEventCode()), GameEvent::getEventCode, bo.getEventCode());
        lqw.like(StringUtils.isNotBlank(bo.getEventName()), GameEvent::getEventName, bo.getEventName());
        lqw.eq(StringUtils.isNotBlank(bo.getEventType()), GameEvent::getEventType, bo.getEventType());
        lqw.eq(StringUtils.isNotBlank(bo.getLocation()), GameEvent::getLocation, bo.getLocation());
        lqw.eq(StringUtils.isNotBlank(bo.getPurpose()), GameEvent::getPurpose, bo.getPurpose());
        lqw.eq(StringUtils.isNotBlank(bo.getIsDefault()), GameEvent::getIsDefault, bo.getIsDefault());
        lqw.eq(StringUtils.isNotBlank(bo.getStatus()), GameEvent::getStatus, bo.getStatus());
        return lqw;
    }

    /**
     * 新增赛事基本信息
     *
     * @param bo 赛事基本信息
     * @return 是否新增成功
     */
    @Override
    public Long insertByBo(GameEventBo bo) {
        if (bo.getEventId() == null) {
            Object cacheObject = RedisUtils.getCacheObject(GameEventConstant.DEFAULT_EVENT_ID);
            if (cacheObject instanceof Integer) {
                bo.setEventId(((Integer) cacheObject).longValue());  // 显式转换为 Long 类型
            } else if (cacheObject instanceof Long) {
                bo.setEventId((Long) cacheObject);
            }
        }
        GameEvent add = MapstructUtils.convert(bo, GameEvent.class);
        validEntityBeforeSave(add);
        boolean flag = baseMapper.insert(add) > 0;
        if (flag) {
            return add.getEventId();
        }
        return null;
    }

    /**
     * 修改赛事基本信息
     *
     * @param bo 赛事基本信息
     * @return 是否修改成功
     */
    @Override
    public Boolean updateByBo(GameEventBo bo) {
        if (bo.getEventId() == null) {
            Object cacheObject = RedisUtils.getCacheObject(GameEventConstant.DEFAULT_EVENT_ID);
            if (cacheObject instanceof Integer) {
                bo.setEventId(((Integer) cacheObject).longValue());  // 显式转换为 Long 类型
            } else if (cacheObject instanceof Long) {
                bo.setEventId((Long) cacheObject);
            }
        }
        GameEvent update = MapstructUtils.convert(bo, GameEvent.class);
        validEntityBeforeSave(update);
        boolean result = baseMapper.updateById(update) > 0;
        // 如果修改的是默认赛事，更新缓存
        if ("0".equals(bo.getIsDefault())) {
            RedisUtils.setCacheObject(GameEventConstant.DEFAULT_EVENT, JsonUtils.toJsonString(update));
        }
        return result;
    }

    /**
     * 保存前的数据校验
     */
    private void validEntityBeforeSave(GameEvent entity) {
        //TODO 做一些数据校验,如唯一约束
    }

    /**
     * 校验并批量删除赛事基本信息信息
     *
     * @param ids     待删除的主键集合
     * @param isValid 是否进行有效性校验
     * @return 是否删除成功
     */
    @Override
    public Boolean deleteWithValidByIds(Collection<Long> ids, Boolean isValid) {
        if (isValid) {
            //TODO 做一些业务上的校验,判断是否需要校验
        }
        // 检查删除的赛事中是否包含默认赛事
        LambdaQueryWrapper<GameEvent> lqw = Wrappers.lambdaQuery();
        lqw.in(GameEvent::getEventId, ids);
        lqw.eq(GameEvent::getIsDefault, "0");
        GameEvent defaultEvent = baseMapper.selectOne(lqw);

        boolean result = baseMapper.deleteByIds(ids) > 0;

        // 如果删除了默认赛事，清除缓存
        if (defaultEvent != null) {
            RedisUtils.deleteObject(GameEventConstant.DEFAULT_EVENT);
        }
        return baseMapper.deleteByIds(ids) > 0;
    }

    /**
     * 获取赛事ID与名称的映射关系
     *
     * @return 赛事ID与名称的映射关系
     */
    @Override
    public Map<String, Long> getEventIdNameMap() {
        List<GameEvent> idNameList = this.baseMapper.selectList(
            new LambdaQueryWrapper<GameEvent>()
                .select(GameEvent::getEventId, GameEvent::getEventName)
        );
        Map<String, Long> idNameMap = idNameList.stream()
            .collect(Collectors.toMap(GameEvent::getEventName, GameEvent::getEventId));
        return idNameMap;
    }

    /**
     * 初始化默认赛事缓存
     */
    @Override
    public void init() {
        LambdaQueryWrapper<GameEvent> lqw = Wrappers.lambdaQuery();
        lqw.eq(GameEvent::getIsDefault, "0");
        GameEvent defaultEvent = baseMapper.selectOne(lqw);
        if (defaultEvent != null) {
            RedisUtils.setCacheObject(GameEventConstant.DEFAULT_EVENT, JsonUtils.toJsonString(defaultEvent));
            RedisUtils.setCacheObject(GameEventConstant.DEFAULT_EVENT_ID, defaultEvent.getEventId());
        }
    }

    /**
     * 获取默认赛事信息
     *
     * @return 默认赛事信息
     */
    @Override
    public GameEventVo getDefaultEvent() {
        String defaultEventJson = RedisUtils.getCacheObject(GameEventConstant.DEFAULT_EVENT);
        if (StringUtils.isNotEmpty(defaultEventJson)) {
            return JsonUtils.parseObject(defaultEventJson, GameEventVo.class);
        }

        // 缓存未命中，从数据库查询
        LambdaQueryWrapper<GameEvent> lqw = Wrappers.lambdaQuery();
        lqw.eq(GameEvent::getIsDefault, "0");
        GameEvent defaultEvent = baseMapper.selectOne(lqw);

        if (defaultEvent != null) {
            // 放入缓存
            RedisUtils.setCacheObject(GameEventConstant.DEFAULT_EVENT, JsonUtils.toJsonString(defaultEvent));
            RedisUtils.setCacheObject(GameEventConstant.DEFAULT_EVENT_ID, defaultEvent.getEventId());
            return baseMapper.selectVoById(defaultEvent.getEventId());
        }

        return null;
    }


    /**
     * 设置默认赛事
     *
     * @param bo 赛事信息
     * @return 更新记录数
     */
    @Override
    @Transactional(rollbackFor = Exception.class)
    public int updateEventDefault(GameEventBo bo) {
        GameEvent event = MapstructUtils.convert(bo, GameEvent.class);
        // 先将所有赛事设置为非默认
        int row = baseMapper.update(null, new LambdaUpdateWrapper<GameEvent>()
            .set(GameEvent::getIsDefault, "1"));
        // 再将指定赛事设置为默认
        row += baseMapper.updateById(event);
        if (row > 0) {
            // 更新缓存中的默认赛事信息
            GameEvent updatedEvent = baseMapper.selectById(event.getEventId());
            RedisUtils.setCacheObject(GameEventConstant.DEFAULT_EVENT, JsonUtils.toJsonString(updatedEvent));
            RedisUtils.setCacheObject(GameEventConstant.DEFAULT_EVENT_ID, updatedEvent.getEventId());
        }
        return row;
    }

    /**
     * 统计赛事个数
     * 0:所有 1:未开始 2:进行中 3:已结束
     *
     * @return
     */
    @Override
    public Long countGameEvent(Long type) {
        return this.baseMapper.selectCount(
            Wrappers.lambdaQuery(GameEvent.class)
                .apply(type == 0, "1=1")
                .apply(type == 1, "start_time > now()")
                .apply(type == 2, "start_time <= now() and end_time >= now()")
                .apply(type == 3, "end_time < now()")
        );
    }
}
