'use strict';
const balanceUtil = require('./util.js');

module.exports = {
    /**
     * 删除资金流水
     * @url admin/finance/balance/sys/delete 前端调用的url参数地址
     */
    main: async (event) => {
        let { data = {}, util } = event;
        let { vk } = util;
        const transaction = await vk.baseDao.startTransaction();

        try {
            if (vk.pubfn.isNull(data._id)) {
                throw new Error('流水ID不能为空');
            }
            const oldLog = await vk.baseDao.findByWhereJson({
                db: transaction,
                dbName: 'jjx-balance-log',
                whereJson: {
                    _id: data._id
                }
            });
            if (!oldLog) {
                throw new Error('流水不存在');
            }

            const revertDelta = Number((-balanceUtil.buildBalanceChange(oldLog)).toFixed(2));
            await balanceUtil.checkBalanceAvailable({
                transaction,
                vk,
                changeAmount: revertDelta
            });

            await vk.baseDao.deleteById({
                db: transaction,
                dbName: 'jjx-balance-log',
                id: data._id
            });

            await balanceUtil.updateBalanceWithDelta({
                transaction,
                vk,
                delta: revertDelta
            });

            await transaction.commit();
            return { code: 0, msg: '' };
        } catch (err) {
            return await balanceUtil.rollbackTransaction({
                transaction,
                err
            });
        }
    }
};