package com.xcong.excoin.modules.contract.service.impl;

import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.xcong.excoin.common.LoginUserUtils;
import com.xcong.excoin.common.response.Result;
import com.xcong.excoin.modules.contract.dao.ContractEntrustOrderDao;
import com.xcong.excoin.modules.contract.dao.ContractOrderDao;
import com.xcong.excoin.modules.contract.entity.ContractEntrustOrderEntity;
import com.xcong.excoin.modules.contract.mapper.ContractEntrustOrderEntityMapper;
import com.xcong.excoin.modules.contract.parameter.dto.SubmitEntrustDto;
import com.xcong.excoin.modules.contract.service.ContractEntrustOrderService;
import com.xcong.excoin.modules.member.dao.MemberWalletContractDao;
import com.xcong.excoin.modules.member.entity.MemberEntity;
import com.xcong.excoin.modules.member.entity.MemberWalletContractEntity;
import com.xcong.excoin.utils.CacheSettingUtils;
import com.xcong.excoin.utils.CoinTypeConvert;
import com.xcong.excoin.utils.RedisUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.annotation.Resource;
import java.math.BigDecimal;

/**
 * @author wzy
 * @date 2020-05-27
 **/
@Slf4j
@Service
public class ContractEntrustOrderServiceImpl extends ServiceImpl<ContractEntrustOrderDao, ContractEntrustOrderEntity> implements ContractEntrustOrderService {

    @Resource
    private ContractEntrustOrderDao contractEntrustOrderDao;

    @Resource
    private MemberWalletContractDao memberWalletContractDao;

    @Resource
    private RedisUtils redisUtils;

    @Resource
    private CacheSettingUtils cacheSettingUtils;

    @Resource
    private ContractOrderDao contractOrderDao;

    @Transactional(rollbackFor = Exception.class)
    @Override
    public Result addContractEntrustOrder(SubmitEntrustDto submitEntrustDto) {
        MemberEntity memberEntity = LoginUserUtils.getAppLoginUser();

        // 获取最新价
        BigDecimal newPirce = new BigDecimal(redisUtils.getString(CoinTypeConvert.convertToKey(submitEntrustDto.getSymbol())));

        // 委托开仓
        if (submitEntrustDto.getEntrustType() == ContractEntrustOrderEntity.ENTRUST_TYPE_OPEN_MORE || submitEntrustDto.getEntrustType() == ContractEntrustOrderEntity.ENTRUST_TYPE_OPEN_LESS) {
            // 开多委托价不能大于当前价
            if (submitEntrustDto.getEntrustType() == ContractEntrustOrderEntity.ENTRUST_TYPE_OPEN_MORE) {
                if (submitEntrustDto.getEntrustPrice().compareTo(newPirce) > -1) {
                    return Result.fail("委托价不能大于当前价");
                }
            }

            // 开空委托价不能小于当前价
            if (submitEntrustDto.getEntrustType() == ContractEntrustOrderEntity.ENTRUST_TYPE_OPEN_LESS) {
                if (submitEntrustDto.getEntrustPrice().compareTo(newPirce) < 1) {
                    return Result.fail("委托价不能小于当前价");
                }
            }

            MemberWalletContractEntity walletContract = memberWalletContractDao.selectById(memberEntity.getId());
            // 委托总额
            BigDecimal entrustTotalAmount = submitEntrustDto.getEntrustPrice().multiply(BigDecimal.valueOf(submitEntrustDto.getSymbolCnt()));

            BigDecimal lotNumber = cacheSettingUtils.getSymbolSku(submitEntrustDto.getSymbol());
            // 保证金计算 -- 建仓价X规格X手数X（1/杠杆倍率）
            BigDecimal bondAmount = entrustTotalAmount.multiply(lotNumber).multiply((BigDecimal.ONE.divide(BigDecimal.valueOf(submitEntrustDto.getLeverRatio()), 8, BigDecimal.ROUND_DOWN)));

            if (entrustTotalAmount.add(bondAmount).compareTo(walletContract.getAvailableBalance()) > -1) {
                return Result.fail("可用余额不足");
            }

            ContractEntrustOrderEntityMapper convert = ContractEntrustOrderEntityMapper.INSTANCE;
            ContractEntrustOrderEntity entrustOrderEntity = convert.submitEntrustDtoToEntity(submitEntrustDto);
            entrustOrderEntity.setMemberId(memberEntity.getId());
            entrustOrderEntity.setBondAmount(bondAmount);
            entrustOrderEntity.setSymbolSku(lotNumber);
            // 暂默认逐仓
            entrustOrderEntity.setPositionType(ContractEntrustOrderEntity.POSITION_TYPE_ADD);

            int i = contractEntrustOrderDao.insert(entrustOrderEntity);

            walletContract.setFrozenBalance(walletContract.getFrozenBalance().add(entrustTotalAmount.add(bondAmount)));
            walletContract.setAvailableBalance(walletContract.getAvailableBalance().subtract(entrustTotalAmount.add(bondAmount)));

            memberWalletContractDao.updateById(walletContract);
            if (i > 0) {
                return Result.ok("委托成功");
            } else {
                return Result.fail("委托失败");
            }
        }

        // 委托平仓 (全仓模式)
        if (submitEntrustDto.getEntrustType() == ContractEntrustOrderEntity.ENTRUST_TYPE_CLOSE_MORE || submitEntrustDto.getEntrustType() == ContractEntrustOrderEntity.ENTRUST_TYPE_CLOSE_LESS) {
            return Result.fail("功能暂未开放,敬请期待");
        }

        return Result.fail("未知错误");
    }

    @Override
    public Result findEntrustOrderList() {
        return null;
    }

    @Override
    public Result cancelEntrustOrder(Long id) {
        MemberEntity memberEntity = LoginUserUtils.getAppLoginUser();

        // 查询该委托单是否为该用户所有
        ContractEntrustOrderEntity entrustOrderEntity = contractEntrustOrderDao.selectEntrustOrderByIdAndMemberId(id, memberEntity.getId());
        if (entrustOrderEntity == null) {
            return Result.fail("该委托单不存在");
        }

        return null;
    }


}