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张成
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tool/node-wxpay/lib/wx_pay.js
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256
tool/node-wxpay/lib/wx_pay.js
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'use strict';
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const IOrder = require('./wx_ipay');
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const util = require('../utils/util');
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// 支付
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class Pay extends IOrder {
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constructor({ appid, mch_id, partner_key, pfx }) {
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super({ appid, mch_id, partner_key, pfx });
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}
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// 初始化参数 请求
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async init(params, name, properties) {
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this._otherParams(params);
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this._checkOptions(properties);
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this._xml = this._jsontoxml();
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const result = await this._request(name, this._xml);
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return result;
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}
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// md5加密 暴露给外部调用
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md5(params) {
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return this._md5(params);
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}
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// HMAC-SHA256 加密 暴露给外部调用
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hmac(params) {
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return this._hmac(params);
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}
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// xml 转json 暴露给外部调用
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xmltojson(data) {
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return this._xmltojson(data);
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}
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// 统一下单
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async unifiedorder(params) {
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// 必传参数
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const properties = ['body', 'out_trade_no', 'total_fee', 'spbill_create_ip', 'notify_url', 'trade_type'];
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if (params.trade_type === 'JSAPI') properties.push('openid');
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if (params.trade_type === 'NATIVE') properties.push('product_id');
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if (params.trade_type === 'MWEB') {
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properties.push('scene_info');
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properties.push('redirect_url');
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};
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const result = await this.init(params, 'unifiedorder', properties);
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const { prepay_id, return_code, return_msg, result_code } = result;
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if (return_code !== 'SUCCESS' || result_code !== 'SUCCESS') return result;
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// 参数处理
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let _data = {};
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switch (this._params.trade_type) {
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case 'JSAPI':
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_data['appId'] = this._params.appid;
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_data['timeStamp'] = `${parseInt((+new Date()) / 1000)}`;
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_data['package'] = `prepay_id=${prepay_id}`;
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_data['nonceStr'] = util.getNonceStr().toLowerCase();
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_data['signType'] = params['sign_type'] || 'MD5';
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if (params['sign_type'] === 'HMAC-SHA256') {
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_data['paySign'] = this._hmac(_data);
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} else {
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_data['paySign'] = this._md5(_data);
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}
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break;
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case 'APP':
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_data['appid'] = this._params.appid;
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_data['timestamp'] = `${parseInt((+new Date()) / 1000)}`;
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_data['partnerid'] = this._params.mch_id;
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_data['prepayid'] = prepay_id;
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_data['package'] = 'Sign=WXPay';
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_data['noncestr'] = util.getNonceStr().toLowerCase();
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if (params['sign_type'] === 'HMAC-SHA256') {
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_data['sign'] = this._hmac(_data);
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} else {
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_data['sign'] = this._md5(_data);
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}
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break;
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case 'NATIVE': // pc端网站 模式二
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_data = { // 把code_url 生成图片
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...result,
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};
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break;
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case 'MWEB':
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// 不能直接在浏览器中访问mweb_url,会报商家参数错误，因为他会检测Referer,所以Referer不能为空
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// 手机浏览器中支付 https://wx.tenpay.com/cgi-bin/mmpayweb-bin/checkmweb?prepay_id=wx20161110163838f231619da20804912345&package=1037687096&redirect_url=https%3A%2F%2Fwww.wechatpay.com.cn
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_data = {
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...result,
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'mweb_url': result.mweb_url + `&redirect_url=${encodeURIComponent(this._params.redirect_url)}`,
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};
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break;
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default:
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console.error('trade_type参数有误');
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_data = {};
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}
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const req_data = {
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...this._params,
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};
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delete req_data['pfx'];
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delete req_data['key'];
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delete req_data['sign'];
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return {
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// req_data, // 创建订单的参数 用于回调验证
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..._data,
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return_code,
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return_msg,
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result_code,
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};
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}
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// 支付回调验证
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callback_check(data) {
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let _sign = '';
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if (data.sign_type === 'HMAC-SHA256') {
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_sign = this._hmac(data);
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} else {
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_sign = this._md5(data);
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}
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return data.sign === _sign; // boolean true 成功
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}
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// 订单查询
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async orderquery(params) {
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// 必传参数
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const properties = [];
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if (!params.transaction_id && !params.out_trade_no) throw new Error('缺少参数transaction_id或out_trade_no!');
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let reuslt = await this.init(params, 'orderquery', properties);
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return reuslt;
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}
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// 关闭订单
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async closeorder(params) {
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const properties = ['out_trade_no'];
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let reuslt = await this.init(params, 'closeorder', properties);
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return reuslt;
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}
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// 申请退款
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async refund(params) {
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if (!params.transaction_id && !params.out_trade_no) throw new Error('缺少参数transaction_id或out_trade_no!');
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if (!this._options.pfx) throw new Error('缺少pfx');
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const properties = ['out_refund_no', 'total_fee', 'refund_fee'];
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let reuslt = await this.init(params, 'refund', properties);
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return reuslt;
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}
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// 查询退款
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async refundquery(params) {
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if (!params.transaction_id && !params.out_trade_no && !params.out_refund_no && !params.refund_id) {
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throw new Error('缺少参数transaction_id或out_trade_no或refund_id或out_refund_no!');
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}
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const properties = [];
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let reuslt = await this.init(params, 'refundquery', properties);
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return reuslt;
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}
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// 下载交易账单
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async downloadbill(params) {
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this._otherParams(params);
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const properties = ['bill_date'];
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this._checkOptions(properties);
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this._xml = this._jsontoxml();
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const result = await this._request2('downloadbill', this._xml);
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if (result.status !== 200 && result.statusCode !== 200) return result;
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// 参数处理
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if (result.type === 'application/x-gzip') {
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return {
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'data': result.body,
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'return_code': 'SUCCESS',
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};
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} else if (result.type === 'text/plain') {
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if (result.text.indexOf('<xml>') !== -1) return this._xmltojson(result.text);
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return {
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'data': result.text,
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'return_code': 'SUCCESS',
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};
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}
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return result;
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}
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// 下载资金账单
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async downloadfundflow(params) {
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this._otherParams(params);
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if (params.sign_type !== 'HMAC-SHA256') throw new Error('请选择HMAC-SHA256加密！');
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if (!this._params.pfx) throw new Error('缺少pfx');
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const properties = ['bill_date', 'account_type'];
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this._checkOptions(properties);
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this._xml = this._jsontoxml();
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const result = await this._request2('downloadfundflow', this._xml);
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if (result.status !== 200 && result.statusCode !== 200) return result;
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// 参数处理
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if (result.type === 'application/x-gzip') {
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return {
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'data': result.body,
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'return_code': 'SUCCESS',
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'result_code': 'SUCCESS',
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};
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} else if (result.type === 'text/plain') {
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if (result.text.indexOf('<xml>') !== -1) return this._xmltojson(result.text);
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return {
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'data': result.text,
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'return_code': 'SUCCESS',
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'result_code': 'SUCCESS',
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};
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}
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return result;
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}
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// 交易保障
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async report(params) {
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const properties = ['interface_url', 'execute_time_', 'return_code', 'result_code', 'user_ip'];
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let reuslt = await this.init(params, 'report', properties);
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return reuslt;
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}
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// 拉取订单评价数据
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async batchquerycomment(params) {
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this._otherParams(params);
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const properties = ['begin_time', 'end_time', 'offset', 'limit'];
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if (!this._params.pfx) throw new Error('缺少pfx');
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this._checkOptions(properties);
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this._xml = this._jsontoxml();
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const result = await this._request2('batchquerycomment', this._xml);
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if (result.status !== 200 && result.statusCode !== 200) return result;
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// 参数处理
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if (result.type === 'text/html') {
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if (result.text.indexOf('<xml>') !== -1) {
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return this._xmltojson(result.text);
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}
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return {
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'data': result.text,
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'return_code': 'SUCCESS',
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'result_code': 'SUCCESS',
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};
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}
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return result;
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}
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// 付款码支付
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async micropay(params) {
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const properties = ['body', 'out_trade_no', 'total_fee', 'spbill_create_ip', 'auth_code'];
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let reuslt = await this.init(params, 'micropay', properties);
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return reuslt;
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}
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// 撤销订单(只支持付款码支付的订单才可以撤销，统一下单生成的订单不能撤销)
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async reverse(params) {
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if (!params.transaction_id && !params.out_trade_no) throw new Error('缺少参数transaction_id或out_trade_no!');
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const properties = [];
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let reuslt = await this.init(params, 'reverse', properties);
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return reuslt;
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}
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// 付款码查询openid
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async authcodetoopenid(params) {
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const properties = ['auth_code'];
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let reuslt = await this.init(params, 'authcodetoopenid', properties);
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return reuslt;
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}
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}
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module.exports = Pay;
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