抽奖服务完善

admin

2020-11-30 6e281067fe81dbf180c63a2833f74c1615d32f18

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package com.ks.lucky.service.impl;
 
import com.ks.lucky.exception.LuckyActivityException;
import com.ks.lucky.mapper.LuckyActivityMapper;
import com.ks.lucky.pojo.DO.LuckyActivity;
import com.ks.lucky.pojo.DO.LuckyActivityOpenInfo;
import com.ks.lucky.pojo.DTO.ActivityMQMsg;
import com.ks.lucky.util.mq.CMQManager;
import org.springframework.stereotype.Component;
import org.springframework.transaction.annotation.Transactional;
 
import javax.annotation.Resource;
import java.util.Date;
 
 
@Component
public class LuckyActivityManager {
 
    @Resource
    private LuckyActivityMapper luckyActivityMapper;
 
    @Resource
    private LuckyActivityOpenInfoManager luckyActivityOpenInfoManager;
 
 
    /**
     * 活动是否还可以参加
     *
     * @param activityId
     * @return
     * @throws LuckyActivityException
     */
    public boolean canJoin(Long activityId) throws LuckyActivityException {
        LuckyActivity activity = luckyActivityMapper.selectByPrimaryKey(activityId);
        if (activity == null) {
            throw new LuckyActivityException(LuckyActivityException.CODE_NOT_EXIST, "活动不存在");
        }
 
        if (activity.getState() == LuckyActivity.STATE_NOT_STARTED) {
            throw new LuckyActivityException(1, "活动还未开始");
        }
 
        if (activity.getState() == LuckyActivity.STATE_FINISH || activity.getState() == LuckyActivity.STATE_OPENED) {
            throw new LuckyActivityException(1, "活动已经结束");
        }
 
        if (activity.getCurrentPersonCount() >= activity.getMaxPersonCount()) {
            throw new LuckyActivityException(1, "参与人数已满");
        }
 
        return true;
    }
 
    /**
     * 添加参与数
     *
     * @param activityId
     * @param count
     * @throws LuckyActivityException
     */
    @Transactional(rollbackFor = Exception.class)
    public void addJoinCount(Long activityId, int count) throws LuckyActivityException {
        LuckyActivity luckyActivity = luckyActivityMapper.selectByPrimaryKeyForUpdate(activityId);
        if (luckyActivity == null) {
            throw new LuckyActivityException(LuckyActivityException.CODE_NOT_EXIST, "活动不存在");
        }
 
        LuckyActivityOpenInfo openInfo = luckyActivityOpenInfoManager.getOpenInfo(activityId);
        if (openInfo == null) {
            throw new LuckyActivityException(1, "活动信息不完整");
        }
 
        int currentCount = luckyActivity.getCurrentPersonCount();
        LuckyActivity update = new LuckyActivity();
        update.setId(activityId);
        update.setCurrentPersonCount(currentCount + count);
        update.setUpdateTime(new Date());
        luckyActivityMapper.updateByPrimaryKeySelective(update);
        if (update.getCurrentPersonCount().intValue() >= openInfo.getMinPersonCount() && currentCount < openInfo.getMinPersonCount()) {
            //达到最低开奖人数
            CMQManager.getInstance().addActivityMsg(new ActivityMQMsg(activityId, ActivityMQMsg.TYPE_REACH_MIN_PERSON, new Date()));
        }
 
        if (update.getCurrentPersonCount().intValue() >= luckyActivity.getMaxPersonCount() && currentCount < luckyActivity.getMaxPersonCount()) {
            //达到最大开奖人数
            CMQManager.getInstance().addActivityMsg(new ActivityMQMsg(activityId, ActivityMQMsg.TYPE_REACH_MAX_PERSON, new Date()));
        }
 
    }
 
    /**
     * 启动活动
     *
     * @param activityId
     */
    public void startUpActivity(Long activityId) throws LuckyActivityException {
        LuckyActivity luckyActivity = luckyActivityMapper.selectByPrimaryKeyForUpdate(activityId);
        if (luckyActivity == null) {
            throw new LuckyActivityException(LuckyActivityException.CODE_NOT_EXIST, "活动不存在");
        }
 
        if (luckyActivity.getState() != LuckyActivity.STATE_NOT_STARTED) {
            throw new LuckyActivityException(1, "活动尚未处于待启动状态");
        }
 
        //启动活动
        setState(activityId, LuckyActivity.STATE_STARTED, "已经启动");
    }
 
 
    /**
     * 按主键查询
     *
     * @param id
     * @return
     */
    public LuckyActivity selectByPrimaryKey(Long id) {
        return luckyActivityMapper.selectByPrimaryKey(id);
    }
 
 
    /**
     * 设置状态
     *
     * @param activityId
     * @param state
     * @param stateRemarks
     */
    public void setState(Long activityId, int state, String stateRemarks) {
        LuckyActivity activity = new LuckyActivity();
        activity.setId(activityId);
        activity.setState(state);
        activity.setStateRemarks(stateRemarks);
        activity.setUpdateTime(new Date());
        luckyActivityMapper.updateByPrimaryKeySelective(activity);
    }
 
}