package com.panzhihua.common.listen;

import java.util.ArrayList;
import java.util.List;

import com.alibaba.excel.context.AnalysisContext;
import com.alibaba.excel.event.AnalysisEventListener;
import com.alibaba.fastjson.JSONObject;
import com.panzhihua.common.exceptions.ServiceException;
import com.panzhihua.common.model.vos.R;
import com.panzhihua.common.model.vos.community.ComSwRotaExcelVO;
import com.panzhihua.common.service.community.CommunityService;

import lombok.extern.slf4j.Slf4j;

/**
 * @description: 值班表监听
 * @author: Null
 * @date: 2021/7/31 13:26
 */
@Slf4j
public class ComSwRotaExcelListen extends AnalysisEventListener<ComSwRotaExcelVO> {

    private static final int BATCH_COUNT = 100;
    private CommunityService communityService;
    private Long communityId;
    private List<ComSwRotaExcelVO> list = new ArrayList<>();

    public ComSwRotaExcelListen(CommunityService communityService, Long communityId) {
        this.communityService = communityService;
        this.communityId = communityId;
    }

    @Override
    public void invoke(ComSwRotaExcelVO comSwRotaExcelVO, AnalysisContext analysisContext) {
        list.add(comSwRotaExcelVO);
        if (list.size() == 0) {
            throw new ServiceException("500", "导入数据为空！");
        }
        // 达到BATCH_COUNT了，需要去存储一次数据库，防止数据几万条数据在内存，容易OOM
        if (list.size() >= BATCH_COUNT) {
            log.info("excel导入数据【{}】", JSONObject.toJSONString(list));
            R r = this.communityService.listSaveSwRotaExcelVO(list, this.communityId);
            if (!R.isOk(r)) {
                throw new ServiceException(r.getMsg());
            }
            list.clear(); // 清空list
        }

    }

    @Override
    public void doAfterAllAnalysed(AnalysisContext analysisContext) {
        log.info("excel导入数据【{}】", JSONObject.toJSONString(list));
        if (list.size() == 0) {
            throw new ServiceException("500", "导入数据为空！");
        }
        R r = this.communityService.listSaveSwRotaExcelVO(list, this.communityId);// 确保最后遗留的数据保存在数据库中
        if (!R.isOk(r)) {
            throw new ServiceException(r.getMsg());
        }
    }
}