'use strict';
module.exports = {
	/**
	 * 后台赠送签约宝次数
	 * @url admin/system/user/sys/giftQybNum
	 * @param {String} user_id 用户ID
	 * @param {Number} giftNum 赠送次数
	 */
	main: async (event) => {
		let { data = {}, util } = event;
		let { vk, _ } = util;
		let res = { code: 0, msg: '' };

		const { user_id, giftNum } = data;
		const num = Number(giftNum);

		if (!user_id) {
			return { code: -1, msg: '用户ID不能为空' };
		}
		if (!Number.isInteger(num) || num <= 0) {
			return { code: -1, msg: '赠送次数必须为正整数' };
		}

		const user = await vk.baseDao.findById({
			dbName: 'uni-id-users',
			id: user_id
		});
		if (!user) {
			return { code: -1, msg: '用户不存在' };
		}

		// 剩余签约次数、优惠政策赠送次数、累计赠送次数同步累加
		await vk.baseDao.updateById({
			dbName: 'uni-id-users',
			id: user_id,
			dataJson: {
				qybNum: _.inc(num),
				qybGiftNum: _.inc(num),
				qybTotalGiftNum: _.inc(num)
			}
		});

		res.msg = '赠送成功';
		return res;
	}
};