优化工单模块，增加企微模块

sg_wechat_enterprise/we_api/enterprise/client/api/jsapi.py

@@ -0,0 +1,48 @@
+# -*- coding: utf-8 -*-
+from __future__ import absolute_import, unicode_literals
+import time
+
+from wechatpy.client.api.base import BaseWeChatAPI
+from wechatpy.utils import WeChatSigner
+
+
+class WeChatJSAPI(BaseWeChatAPI):
+
+    def get_ticket(self):
+        """
+        获取微信 JS-SDK ticket
+
+        http://qydev.weixin.qq.com/wiki/index.php?title=%E5%BE%AE%E4%BF%A1JS%E6%8E%A5%E5%8F%A3
+
+        :return: 返回的 JSON 数据包
+        """
+        return self._get('get_jsapi_ticket')
+
+    def get_jsapi_ticket(self):
+        """
+        获取微信 JS-SDK ticket
+
+        该方法会通过 session 对象自动缓存管理 ticket
+
+        :return: ticket
+        """
+        ticket = self.session.get('jsapi_ticket')
+        expires_at = self.session.get('jsapi_ticket_expires_at', 0)
+        if not ticket or expires_at < int(time.time()):
+            jsapi_ticket = self.get_ticket()
+            ticket = jsapi_ticket['ticket']
+            expires_at = int(time.time()) + int(jsapi_ticket['expires_in'])
+            self.session.set('jsapi_ticket', ticket)
+            self.session.set('jsapi_ticket_expires_at', expires_at)
+        return ticket
+
+    def get_jsapi_signature(self, noncestr, ticket, timestamp, url):
+        data = [
+            'noncestr={noncestr}'.format(noncestr=noncestr),
+            'jsapi_ticket={ticket}'.format(ticket=ticket),
+            'timestamp={timestamp}'.format(timestamp=timestamp),
+            'url={url}'.format(url=url),
+        ]
+        signer = WeChatSigner(delimiter=b'&')
+        signer.add_data(*data)
+        return signer.signature