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

module.exports = {
    /**
     * 编辑资金流水
     * @url admin/finance/balance/sys/update 前端调用的url参数地址
     */
    main: async (event) => {
        let { data = {}, userInfo, 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 description = String(data.description || '').trim();
            if (!description) {
                throw new Error('说明不能为空');
            }
            const newLog = {
                description,
                amount: balanceUtil.normalizeAmount(data.amount),
                type: balanceUtil.normalizeType(data.type),
                logTime: balanceUtil.normalizeTime(data.logTime),
                operatorId: userInfo && userInfo.uid ? userInfo.uid : oldLog.operatorId || '',
                source: oldLog.source || data.source || 'manual'
            };

            const oldChange = balanceUtil.buildBalanceChange(oldLog);
            const newChange = balanceUtil.buildBalanceChange(newLog);
            const delta = Number((newChange - oldChange).toFixed(2));

            await balanceUtil.checkBalanceAvailable({
                transaction,
                vk,
                changeAmount: delta
            });

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

            await balanceUtil.updateBalanceWithDelta({
                transaction,
                vk,
                delta,
                lastLogId: data._id
            });

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