package com.yeshi.fanli.service.impl.money;
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import java.math.BigDecimal;
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import java.util.ArrayList;
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import java.util.Date;
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import java.util.List;
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import javax.annotation.Resource;
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import org.springframework.stereotype.Service;
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import org.springframework.transaction.annotation.Transactional;
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import com.yeshi.fanli.dao.mybatis.money.OrderTeamRewardDebtMapper;
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import com.yeshi.fanli.dao.mybatis.money.OrderTeamRewardDebtRepayHistoryMapper;
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import com.yeshi.fanli.entity.money.OrderTeamRewardDebt;
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import com.yeshi.fanli.entity.money.OrderTeamRewardDebtRepayHistory;
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import com.yeshi.fanli.exception.money.OrderTeamRewardDebtException;
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import com.yeshi.fanli.service.inter.money.OrderTeamRewardDebtService;
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@Service
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public class OrderTeamRewardDebtServiceImpl implements OrderTeamRewardDebtService {
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@Resource
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private OrderTeamRewardDebtMapper orderTeamRewardDebtMapper;
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@Resource
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private OrderTeamRewardDebtRepayHistoryMapper orderTeamRewardDebtRepayHistoryMapper;
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@Transactional(rollbackFor=Exception.class)
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@Override
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public void addDebt(OrderTeamRewardDebt debt) throws OrderTeamRewardDebtException {
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if (debt == null || debt.getOriginMoney() == null || debt.getUid() == null) {
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throw new OrderTeamRewardDebtException(1, "数据不完整");
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}
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if (debt.getCreateTime() == null)
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debt.setCreateTime(new Date());
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debt.setLeftMoney(debt.getOriginMoney());
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orderTeamRewardDebtMapper.insertSelective(debt);
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}
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@Transactional(rollbackFor=Exception.class)
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@Override
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public void repayDebt(Long debtId, BigDecimal money) throws OrderTeamRewardDebtException {
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OrderTeamRewardDebt debt = orderTeamRewardDebtMapper.selectByPrimaryKeyForUpdate(debtId);
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if (debt == null)
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throw new OrderTeamRewardDebtException(1, "债务ID不存在");
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if (money == null || money.compareTo(new BigDecimal(0)) <= 0)
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throw new OrderTeamRewardDebtException(3, "还钱必须大于0");
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if (debt.getLeftMoney().compareTo(money) < 0)
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throw new OrderTeamRewardDebtException(2, "还钱过多");
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// 还钱
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OrderTeamRewardDebt update = new OrderTeamRewardDebt();
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update.setId(debt.getId());
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update.setLeftMoney(debt.getLeftMoney().subtract(money));
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update.setUpdateTime(new Date());
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orderTeamRewardDebtMapper.updateByPrimaryKeySelective(update);
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// 加入还钱记录
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OrderTeamRewardDebtRepayHistory record = new OrderTeamRewardDebtRepayHistory();
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record.setCreateTime(new Date());
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record.setDebt(debt);
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record.setMoney(money);
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record.setUid(debt.getUid());
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orderTeamRewardDebtRepayHistoryMapper.insertSelective(record);
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}
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@Transactional(rollbackFor=Exception.class)
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@Override
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public BigDecimal repayDebtByUid(Long uid, BigDecimal money) throws OrderTeamRewardDebtException {
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// 还钱
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long count = countNeedRepayDebt(uid);
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int page = (int) (count % 200 == 0 ? count / 200 : count / 200 + 1);
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List<OrderTeamRewardDebt> totalList = new ArrayList<>();
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for (int i = 0; i < page; i++) {
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List<OrderTeamRewardDebt> tempList = listNeedRepayDebt(uid, i + 1, 200);
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if (tempList != null && tempList.size() > 0) {
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totalList.addAll(tempList);
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}
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}
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// 剩余资金
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BigDecimal leftMoney = new BigDecimal(money.toString());
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for (OrderTeamRewardDebt debt : totalList) {
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if (leftMoney.compareTo(new BigDecimal(0)) <= 0)// 余额不足扣款
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break;
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BigDecimal repayMoney = null;
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if (debt.getLeftMoney().compareTo(leftMoney) >= 0)
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repayMoney = new BigDecimal(leftMoney.toString());
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else
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repayMoney = debt.getLeftMoney();
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try {
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repayDebt(debt.getId(), repayMoney);
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leftMoney = leftMoney.subtract(repayMoney);
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} catch (OrderTeamRewardDebtException e) {
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// 上笔还款未成功，继续下一笔还款
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}
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}
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return leftMoney;//返回剩余的资金
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}
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@Override
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public List<OrderTeamRewardDebt> listNeedRepayDebt(Long uid, int page, int count) {
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return orderTeamRewardDebtMapper.listByLeftMoneyAndUid(new BigDecimal("0.01"), null, uid, (page - 1) * count,
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count);
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}
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@Override
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public long countNeedRepayDebt(Long uid) {
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return orderTeamRewardDebtMapper.countByLeftMoneyAndUid(new BigDecimal("0.01"), null, uid);
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}
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@Override
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public BigDecimal getTotalDebtMoney(Long uid) {
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BigDecimal money = orderTeamRewardDebtMapper.sumLeftMoneyByUid(uid);
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if (money == null)
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money = new BigDecimal(0);
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return money;
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}
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}
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