package com.panzhihua.common.listen;

import static java.util.Objects.isNull;
import static java.util.Objects.nonNull;

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

import com.alibaba.excel.context.AnalysisContext;
import com.alibaba.excel.event.AnalysisEventListener;
import com.panzhihua.common.exceptions.ServiceException;
import com.panzhihua.common.model.vos.R;
import com.panzhihua.common.model.vos.community.warehouse.WarehouseDonatesExcelVO;
import com.panzhihua.common.service.community.CommunityService;
import com.panzhihua.common.utlis.StringUtils;

import lombok.extern.slf4j.Slf4j;

/**
 * @title: WarehouseDonatesExcelListen
 * @projectName: 成都呐喊信息技术有限公司-智慧社区项目
 * @description: 爱心义仓物品捐赠导入监听
 * @author: hans
 * @date: 2021/10/09 17:45
 */
@Slf4j
public class WarehouseDonatesExcelListen extends AnalysisEventListener<WarehouseDonatesExcelVO> {

    private static final int BATCH_COUNT = 3000;
    private CommunityService communityService;
    private Long communityId;
    private Long registerBy;
    private List<WarehouseDonatesExcelVO> list = new ArrayList<>();

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

    @Override
    public void invoke(WarehouseDonatesExcelVO warehouseDonatesExcelVO, AnalysisContext analysisContext) {
        Integer quantity = warehouseDonatesExcelVO.getQuantity();
        if (!StringUtils.isEmpty(warehouseDonatesExcelVO.getItem()) && nonNull(quantity)) {
            if (quantity <= 0) {
                throw new ServiceException("捐赠数量有误");
            }
            if (isNull(warehouseDonatesExcelVO.getIsAnonymous())) {
                warehouseDonatesExcelVO.setIsAnonymous("否");
            }
            if (StringUtils.isEmpty(warehouseDonatesExcelVO.getName())) {
                warehouseDonatesExcelVO.setIsAnonymous("是");
            }
            if (isNull(warehouseDonatesExcelVO.getSigningAt())) {
                Date nowDate = new Date();
                warehouseDonatesExcelVO.setSigningAt(nowDate);
                warehouseDonatesExcelVO.setRegisterAt(nowDate);
            } else {
                warehouseDonatesExcelVO.setRegisterAt(warehouseDonatesExcelVO.getSigningAt());
            }
            warehouseDonatesExcelVO.setCommunityId(this.communityId);
            warehouseDonatesExcelVO.setStatus(2);
            warehouseDonatesExcelVO.setSurplusQuantity(quantity);
            warehouseDonatesExcelVO.setRegisterBy(this.registerBy);
            warehouseDonatesExcelVO.setSigningBy(this.registerBy);
            list.add(warehouseDonatesExcelVO);
            // 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) {
                doAfterAllAnalysed(analysisContext);
                list.clear();
            }
        }
    }

    @Override
    public void doAfterAllAnalysed(AnalysisContext analysisContext) {
        R r = this.communityService.batchImportWarehouseDonates(list);
        if (!R.isOk(r)) {
            throw new ServiceException(r.getMsg());
        }
    }
}