package com.jsh.erp.service.impl;

import com.jsh.erp.constants.BusinessConstants;
import com.jsh.erp.datasource.mappers.*;
import com.jsh.erp.exception.JshException;
import com.jsh.erp.service.SequenceService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.annotation.Resource;

/**
 * Description
 *
 * @Author: longyong
 * @Date: 2021/3/16 16:33
 */
@Service
public class SequenceServiceImpl implements SequenceService {
    private Logger logger = LoggerFactory.getLogger(SequenceServiceImpl.class);

    @Resource
    private SequenceMapperEx sequenceMapperEx;

    /**
     * 创建一个唯一的序列号
     * */
    @Transactional(value = "transactionManager", rollbackFor = Exception.class)
    @Override
    public String buildOnlyNumber()throws Exception{
        Long buildOnlyNumber=null;
        synchronized (this){
            try{
                sequenceMapperEx.updateBuildOnlyNumber(BusinessConstants.DEPOT_NUMBER_SEQ); //编号+1
                buildOnlyNumber= sequenceMapperEx.getBuildOnlyNumber(BusinessConstants.DEPOT_NUMBER_SEQ);
            }catch(Exception e){
                JshException.writeFail(logger, e);
            }
        }
        if(buildOnlyNumber<BusinessConstants.SEQ_TO_STRING_MIN_LENGTH){
            StringBuffer sb=new StringBuffer(buildOnlyNumber.toString());
            int len=BusinessConstants.SEQ_TO_STRING_MIN_LENGTH.toString().length()-sb.length();
            for(int i=0;i<len;i++){
                sb.insert(0,BusinessConstants.SEQ_TO_STRING_LESS_INSERT);
            }
            return sb.toString();
        }else{
            return buildOnlyNumber.toString();
        }
    }

    /**
     * 构建供应商编号
     */
    @Override
    public String buildSupplierNumber() {
        Long buildOnlyNumber = null;
        synchronized (this){
            sequenceMapperEx.updateBuildOnlyNumber(BusinessConstants.SUPPLIER_NUMBER_SEQ); //编号+1
            buildOnlyNumber = sequenceMapperEx.getBuildOnlyNumber(BusinessConstants.SUPPLIER_NUMBER_SEQ);
        }
        if(buildOnlyNumber < BusinessConstants.SUPPLIER_SEQ_TO_STRING_MIN_LENGTH){
            StringBuffer sb = new StringBuffer(buildOnlyNumber.toString());
            int len = BusinessConstants.SUPPLIER_SEQ_TO_STRING_MIN_LENGTH.toString().length() - sb.length();
            for(int i=0; i<len; i++){
                sb.insert(0,BusinessConstants.SEQ_TO_STRING_LESS_INSERT);
            }
            return sb.toString();
        }else{
            return buildOnlyNumber.toString();
        }
    }

}