package com.mzl.flower.service.impl.wallet;

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.mzl.flower.config.exception.ValidationException;
import com.mzl.flower.config.security.SecurityUtils;
import com.mzl.flower.constant.Constants;
import com.mzl.flower.constant.LockConstants;
import com.mzl.flower.dto.request.wallet.CreateWalletWithdrawRecordDTO;
import com.mzl.flower.dto.request.wallet.QueryWalletWithdrawDTO;
import com.mzl.flower.dto.request.wallet.WalletWithdrawRecordDTO;
import com.mzl.flower.dto.response.supplier.SupplierDTO;
import com.mzl.flower.dto.response.wallet.WalletWithdrawRecordVO;
import com.mzl.flower.entity.wallet.WalletDO;
import com.mzl.flower.entity.wallet.WalletWithdrawRecordDO;
import com.mzl.flower.mapper.wallet.WalletWithdrawRecordMapper;
import com.mzl.flower.service.supplier.SupplierService;
import com.mzl.flower.service.wallet.WalletBillRecordService;
import com.mzl.flower.service.wallet.WalletService;
import com.mzl.flower.service.wallet.WalletWithdrawRecordService;
import lombok.RequiredArgsConstructor;
import org.redisson.api.RLock;
import org.redisson.api.RedissonClient;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;

import java.time.LocalDateTime;
import java.util.List;
import java.util.concurrent.TimeUnit;

/**
 * <p>
 * 服务实现类
 * </p>
 *
 * @author @TaoJie
 * @since 2024-10-22
 */
@Service
@Transactional
@RequiredArgsConstructor
public class WalletWithdrawRecordServiceImpl extends ServiceImpl<WalletWithdrawRecordMapper, WalletWithdrawRecordDO> implements WalletWithdrawRecordService {

    private final WalletWithdrawRecordMapper walletWithdrawRecordMapper;
    private final WalletService walletService;
    private final SupplierService supplierService;

    private final WalletBillRecordService walletBillRecordService;


    @Autowired
    RedissonClient redissonClient;

    @Transactional
    @Override
    public boolean create(CreateWalletWithdrawRecordDTO dto) {

        SupplierDTO supplierDTO = supplierService.getCurrentSupplier();
        if (null == supplierDTO) {
            throw new ValidationException("供应商不能为空");
        }

        WalletDO walletDO = walletService.getCurrentSupplier();
        if (null == walletDO) {
            throw new ValidationException("钱包不能为空");
        }
        // 查看钱包的金额是不是大于要提现的金额
        if (null != walletDO.getWithdrawableAmount() && null != dto.getAmount() && walletDO.getWithdrawableAmount().compareTo(dto.getAmount()) < 0) {
            throw new ValidationException("钱包金额不足");
        }

        RLock lock = redissonClient.getLock(String.format(LockConstants.WALLET_ID_KEY, walletDO.getId()));
        // 获取锁，最多等待 10 秒，锁自动释放时间 30 秒
        try {
            if (lock.tryLock(10, 30, TimeUnit.SECONDS)) {
                try {

                    // 加锁了之后需要二次查询，防止未加锁之前 someone else 已经修改了
                    walletDO = walletService.getCurrentSupplier();
                    if (null == walletDO) {
                        throw new ValidationException("钱包不能为空");
                    }
                    // 查看钱包的金额是不是大于要提现的金额
                    if (null != walletDO.getWithdrawableAmount() && null != dto.getAmount() && walletDO.getWithdrawableAmount().compareTo(dto.getAmount()) < 0) {
                        throw new ValidationException("钱包金额不足");
                    }

                    // 1.新增一条余额提现记录
                    WalletWithdrawRecordDO withdrawRecordDO = new WalletWithdrawRecordDO();
                    withdrawRecordDO.setAmount(dto.getAmount());
                    withdrawRecordDO.setSupplierId(supplierDTO.getId());
                    withdrawRecordDO.setWithdrawState(Constants.WALLET_WITHDRAW_STATE.WAITING.name());
                    withdrawRecordDO.setMethod(Constants.WALLET_WITHDRAW_METHOD.WEIXIN.name());
                    withdrawRecordDO.create(SecurityUtils.getUserId());
                    // 保存余额提现记录
                    save(withdrawRecordDO);

                    /*
                    // 2.新增一条账单明细
                    WalletBillRecordDO walletBillRecordDO=new WalletBillRecordDO();
                    walletBillRecordDO.setSupplierId(supplierDTO.getId());
                    walletBillRecordDO.setWalletId(walletDO.getId());
                    // 提现
                    walletBillRecordDO.setType(Constants.BILL_CHANGE_TYPE.withdraw.name());
                    walletBillRecordDO.setMethod(Constants.BILL_CHANGE_METHOD.add.name());
                    walletBillRecordDO.setOriginalAmount(walletDO.getWithdrawableAmount());
                    walletBillRecordDO.setChangeAmount(dto.getAmount());
                    walletBillRecordDO.setBalance(walletDO.getWithdrawableAmount().subtract(dto.getAmount()));

                    // 保存账单明细
                    walletBillRecordService.save(walletBillRecordDO);
*/

                    // 3. 钱包更新
                    // 钱包可提现的钱等于当前钱包可提现的钱-提现的钱
                    walletDO.setWithdrawableAmount(walletDO.getWithdrawableAmount().subtract(dto.getAmount()));
                    // 提现中的钱等于原有可提现的钱+提现的钱
                    walletDO.setWithdrawingAmount(walletDO.getWithdrawingAmount().add(dto.getAmount()));
                    walletDO.update(SecurityUtils.getUserId());

                    // 更新钱包
                    return walletService.updateById(walletDO);

                } finally {
                    lock.unlock();
                }
            }
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        }

        return false;
    }

    @Override
    public Page<WalletWithdrawRecordVO> queryPage(QueryWalletWithdrawDTO queryWalletDTO, Page page) {
        List<WalletWithdrawRecordVO> list = walletWithdrawRecordMapper.queryPage(queryWalletDTO, page);
        page.setRecords(list);
        return page;
    }

    @Override
    public void updateWallet(WalletWithdrawRecordDTO walletWithdrawRecordDTO) {
        WalletWithdrawRecordDO withdrawRecordDO = walletWithdrawRecordMapper.selectById(walletWithdrawRecordDTO.getId());
        if (withdrawRecordDO == null) {
            throw new ValidationException("提现记录信息不存在");
        }
        if (StringUtils.isEmpty(walletWithdrawRecordDTO.getApproveState())) {
            throw new ValidationException("审批状态不能为空");
        }
        BeanUtils.copyProperties(walletWithdrawRecordDTO, withdrawRecordDO);
        withdrawRecordDO.update(SecurityUtils.getUserId());
        withdrawRecordDO.setApproveBy(SecurityUtils.getUserId());
        withdrawRecordDO.setApproveTime(LocalDateTime.now());
        walletWithdrawRecordMapper.updateById(withdrawRecordDO);
    }

}