package cc.mrbird.febs.mall.service.impl;
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import cc.mrbird.febs.common.exception.FebsException;
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import cc.mrbird.febs.mall.entity.MallMemberWallet;
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import cc.mrbird.febs.mall.mapper.MallMemberWalletMapper;
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import cc.mrbird.febs.mall.service.IApiMallMemberWalletService;
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import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
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import lombok.RequiredArgsConstructor;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.stereotype.Service;
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import java.math.BigDecimal;
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/**
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* @author wzy
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* @date 2021-09-22
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**/
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@Slf4j
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@Service
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@RequiredArgsConstructor
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public class ApiMallMemberWalletServiceImpl extends ServiceImpl<MallMemberWalletMapper, MallMemberWallet> implements IApiMallMemberWalletService {
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@Override
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public void addBalance(BigDecimal amount, Long memberId) {
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}
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@Override
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public void reduceBalance(BigDecimal amount, Long memberId) {
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int i = 0;
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boolean flag = true;
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while (flag) {
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i++;
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MallMemberWallet wallet = this.baseMapper.selectWalletByMemberId(memberId);
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if (amount.compareTo(wallet.getBalance()) < 0) {
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throw new FebsException("余额不足");
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}
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wallet.setBalance(wallet.getBalance().subtract(amount));
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int result = this.baseMapper.updateBalanceWithVersion(wallet);
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if (result > 0) {
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flag = false;
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} else {
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if (i > 2) {
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throw new FebsException("余额支付失败");
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}
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}
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}
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}
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}
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