package com.zy.asrs.excel;

import com.alibaba.excel.context.AnalysisContext;
import com.alibaba.excel.read.listener.ReadListener;
import com.alibaba.excel.util.ListUtils;
import com.alibaba.fastjson.JSON;
import com.zy.asrs.controller.AgvMobileController;
import com.zy.asrs.entity.Order;
import com.zy.asrs.service.OrderService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.List;

public class CloseOrderReadListener implements ReadListener<ExcelOrder> {

    private static final Logger log = LoggerFactory.getLogger(CloseOrderReadListener.class);


    /**
     * 每隔5条存储数据库，实际使用中可以100条，然后清理list ，方便内存回收
     */
    private static final int BATCH_COUNT = 300;
    /**
     * 缓存的数据
     */
    private List<ExcelOrder> cachedDataList = ListUtils.newArrayListWithExpectedSize(BATCH_COUNT);

    private OrderService orderService;


    /**
     * 如果使用了spring,请使用这个构造方法。每次创建Listener的时候需要把spring管理的类传进来
     *
     * @param orderService
     */
    public CloseOrderReadListener(OrderService orderService) {
        this.orderService = orderService;
    }

    /**
     * 这个每一条数据解析都会来调用
     *
     * @param data    one row value. Is is same as
     * @param context
     */
    @Override
    public void invoke(ExcelOrder data, AnalysisContext context) {
        log.info("解析到一条数据:{}", JSON.toJSONString(data));
        cachedDataList.add(data);
        // 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 (cachedDataList.size() >= BATCH_COUNT) {
            saveData();
            // 存储完成清理 list
            cachedDataList = ListUtils.newArrayListWithExpectedSize(BATCH_COUNT);
        }
    }

    /**
     * 所有数据解析完成了 都会来调用
     *
     * @param context
     */
    @Override
    public void doAfterAllAnalysed(AnalysisContext context) {
        // 这里也要保存数据，确保最后遗留的数据也存储到数据库
        saveData();
        log.info("所有数据解析完成！");
    }

    /**
     * 加上存储数据库
     */
    private void saveData() {
        log.info("{}条数据，开始操作数据库！", cachedDataList.size());
        for (ExcelOrder excelOrder : cachedDataList) {
            Order order = orderService.selectByNo(excelOrder.getOrderNo());
            if (order != null) {
                orderService.updateSettle(order.getId(), 6L, 9529L);
            }
        }
        log.info("存储数据库成功！");
    }
}