修改中文注释

+/**
+ * 微信分享签名
+ * Bi Kai <kai.bi@yoho.cn>
+ */
 'use strict';
 const wechatModel = require('../models/wechat');
 

@@ -27,80 +27,80 @@ const ticketCacheKey = 'wechatShare:ticket';
 
 // 微信 JS 接口签名校验工具 http://mp.weixin.qq.com/debug/cgi-bin/sandbox?t=jsapisign
 
-const wechat = {
-    getAccessToken: Promise.coroutine(function* () {
-        let accessToken = yield cache.get(accessTokenCacheKey);
-
-        if (accessToken) {
-            return accessToken;
-        }
-
-        logger.info('调用微信 API 获取 accessToken');
-        return request({
-            url: 'https://api.weixin.qq.com/cgi-bin/token',
-            qs: {
-                grant_type: 'client_credential',
-                appid: appId,
-                secret: secret
-            },
-            json: true
-        }).then((res) => {
-
-            // accessToken 有效期 7200s，缓存 7100s
-            cache.set(accessTokenCacheKey, res.access_token, 7100).catch((err) => {
-                logger.error('微信分享 Token, 缓存 accessToken 时出错', JSON.stringify(err));
-            });
-            return res.access_token;
-        }).catch((err) => {
-            logger.error('微信分享 Token, 获取 accessToken 时出错', JSON.stringify(err));
+let _getAccessToken = Promise.coroutine(function* () {
+    let accessToken = yield cache.get(accessTokenCacheKey);
+
+    if (accessToken) {
+        return accessToken;
+    }
+
+    logger.info('get accessToken from wechat API');
+    return request({
+        url: 'https://api.weixin.qq.com/cgi-bin/token',
+        qs: {
+            grant_type: 'client_credential',
+            appid: appId,
+            secret: secret
+        },
+        json: true
+    }).then((res) => {
+
+        // accessToken 有效期 7200s，缓存 7100s
+        cache.set(accessTokenCacheKey, res.access_token, 7100).catch((err) => {
+            logger.error('set wechat accessToken cache error', JSON.stringify(err));
         });
-    }),
-
-    getTicket: Promise.coroutine(function* () {
-        let ticket = yield cache.get(ticketCacheKey);
-
-        if (ticket) {
-            return ticket;
-        }
-
-        logger.info('调用微信 API 获取 ticket');
-        return request({
-            url: 'https://api.weixin.qq.com/cgi-bin/ticket/getticket',
-            qs: {
-                access_token: yield this.getAccessToken(),
-                type: 'jsapi'
-            },
-            json: true
-        }).then(res => {
+        return res.access_token;
+    }).catch((err) => {
+        logger.error('get accessToken from wechat API error', JSON.stringify(err));
+    });
+});
+
+let _getTicket = Promise.coroutine(function* () {
+    let ticket = yield cache.get(ticketCacheKey);
+
+    if (ticket) {
+        return ticket;
+    }
+
+    logger.info('get ticket from wechat API');
+    return request({
+        url: 'https://api.weixin.qq.com/cgi-bin/ticket/getticket',
+        qs: {
+            access_token: yield _getAccessToken(),
+            type: 'jsapi'
+        },
+        json: true
+    }).then(res => {
 
             // ticket 有效期 7200s，缓存 7100s
-            cache.set(ticketCacheKey, res.ticket, 7100).catch((err) => {
-                logger.error('微信分享 Token, 缓存 ticket 时出错', JSON.stringify(err));
-            });
-            return res.ticket;
-        }).catch((err) => {
-            logger.error('微信分享 Token, 获取 ticket 时出错', JSON.stringify(err));
+        cache.set(ticketCacheKey, res.ticket, 7100).catch((err) => {
+            logger.error('set wechat Token cache error', JSON.stringify(err));
         });
-    }),
-
-    calcSignature: Promise.coroutine(function* (data) {
-        data = Object.assign({
-            nonceStr: Math.random().toString(36).substr(2, 15),
-            timestamp: Math.floor(Date.now() / 1000) + '',
-            ticket: yield this.getTicket(),
-            appId: appId
-        }, data);
-
-        const str = `jsapi_ticket=${data.ticket}&noncestr=${data.nonceStr}&timestamp=${data.timestamp}&url=${data.url}`;
-
-        data.signature = sha1(str);
-        return data;
-    })
-};
+        return res.ticket;
+    }).catch((err) => {
+        logger.error('get ticket from wechat API error', JSON.stringify(err));
+    });
+});
+
+let calcSignature = Promise.coroutine(function* (data) {
+    data = Object.assign({
+        nonceStr: Math.random().toString(36).substr(2, 15),
+        timestamp: Math.floor(Date.now() / 1000) + '',
+        ticket: yield _getTicket(),
+        appId: appId
+    }, data);
+
+    const str = `jsapi_ticket=${data.ticket}&noncestr=${data.nonceStr}&timestamp=${data.timestamp}&url=${data.url}`;
+
+    data.signature = sha1(str);
+    return data;
+});
 
 // 测试
-// wechat.calcSignature({
+// calcSignature({
 //     url: 'http://www.yohobuy.com/'
 // }).then(console.log);
 
-module.exports = wechat;
+module.exports = {
+    calcSignature
+};