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@@ -1,6 +1,14 @@
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const crypto = require('crypto');
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+const md5 = require('md5');
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module.exports = class extends think.Service {
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+ /**
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+ * 解析微信登录用户数据
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+ * @param sessionKey
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+ * @param encryptedData
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+ * @param iv
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+ * @returns {Promise.<string>}
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+ */
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async decryptUserInfoData(sessionKey, encryptedData, iv) {
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// base64 decode
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const _sessionKey = new Buffer(sessionKey, 'base64');
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@@ -26,4 +34,104 @@ module.exports = class extends think.Service {
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return decoded;
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}
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+
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+ /**
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+ * 统一下单
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+ * @param payInfo
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+ * @returns {Promise}
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+ */
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+ createUnifiedOrder(payInfo) {
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+ const WeiXinPay = require('weixinpay');
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+ const weixinpay = new WeiXinPay({
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+ appid: think.config('weixin.appid'), // 微信小程序appid
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+ openid: payInfo.openid, // 用户openid
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+ mch_id: think.config('weixin.mch_id'), // 商户帐号ID
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+ partner_key: think.config('weixin.partner_key') // 秘钥
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+ });
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+ return new Promise((resolve, reject) => {
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+ weixinpay.createUnifiedOrder({
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+ body: payInfo.body,
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+ out_trade_no: payInfo.out_trade_no,
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+ total_fee: payInfo.total_fee,
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+ spbill_create_ip: payInfo.spbill_create_ip,
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+ notify_url: think.config('weixin.notify_url'),
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+ trade_type: 'JSAPI'
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+ }, (res) => {
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+ if (res.return_code === 'SUCCESS' && res.result_code === 'SUCCESS') {
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+ const returnParams = {
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+ 'appid': res.appid,
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+ 'timeStamp': parseInt(Date.now() / 1000) + '',
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+ 'nonceStr': res.nonce_str,
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+ 'package': 'prepay_id=' + res.prepay_id,
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+ 'signType': 'MD5'
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+ };
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+ const paramStr = `appId=${returnParams.appid}&nonceStr=${returnParams.nonceStr}&package=${returnParams.package}&signType=${returnParams.signType}&timeStamp=${returnParams.timeStamp}&key=` + think.config('weixin.partner_key');
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+ returnParams.paySign = md5(paramStr).toUpperCase();
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+ resolve(returnParams);
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+ } else {
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+ reject(res);
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+ }
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+ });
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+ });
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+ }
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+
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+ /**
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+ * 生成排序后的支付参数 query
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+ * @param queryObj
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+ * @returns {Promise.<string>}
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+ */
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+ buildQuery(queryObj) {
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+ const sortPayOptions = {};
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+ for (const key of Object.keys(queryObj).sort()) {
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+ sortPayOptions[key] = queryObj[key];
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+ }
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+ let payOptionQuery = '';
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+ for (const key of Object.keys(sortPayOptions).sort()) {
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+ payOptionQuery += key + '=' + sortPayOptions[key] + '&';
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+ }
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+ payOptionQuery = payOptionQuery.substring(0, payOptionQuery.length - 1);
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+ return payOptionQuery;
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+ }
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+
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+ /**
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+ * 对 query 进行签名
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+ * @param queryStr
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+ * @returns {Promise.<string>}
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+ */
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+ signQuery(queryStr) {
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+ queryStr = queryStr + '&key=' + think.config('weixin.partner_key');
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+ const md5 = require('md5');
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+ const md5Sign = md5(queryStr);
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+ return md5Sign.toUpperCase();
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+ }
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+
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+ /**
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+ * 处理微信支付回调
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+ * @param notifyData
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+ * @returns {{}}
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+ */
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+ payNotify(notifyData) {
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+ if (think.isEmpty(notifyData)) {
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+ return false;
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+ }
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+
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+ const notifyObj = {};
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+ let sign = '';
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+ for (const key of Object.keys(notifyData)) {
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+ if (key !== 'sign') {
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+ notifyObj[key] = notifyData[key][0];
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+ } else {
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+ sign = notifyData[key][0];
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+ }
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+ }
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+ if (notifyObj.return_code !== 'SUCCESS' || notifyObj.result_code !== 'SUCCESS') {
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+ console.log('return_code false');
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+ return false;
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+ }
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+ const signString = this.signQuery(this.buildQuery(notifyObj));
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+ if (think.isEmpty(sign) || signString !== sign) {
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+ return false;
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+ }
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+ return notifyObj;
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+ }
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};
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tumobi