manyi/library/wechatpy/pay/api/jsapi.py

# -*- coding: utf-8 -*-
from __future__ import absolute_import, unicode_literals
import time
import logging
from library import to_text, random_string
from library.wechatpy.pay.base import BaseWeChatPayAPI
from library.wechatpy.pay.utils import calculate_signature

logger = logging.getLogger(__name__)

class WeChatJSAPI(BaseWeChatPayAPI):

    def get_jsapi_signature(self, prepay_id, timestamp=None, nonce_str=None):
        """
        获取 JSAPI 签名

        :param prepay_id: 统一下单接口返回的 prepay_id 参数值
        :param timestamp: 可选，时间戳，默认为当前时间戳
        :param nonce_str: 可选，随机字符串，默认自动生成
        :return: 签名
        """
        data = {
            'appId': self.sub_appid or self.appid,
            'timeStamp': timestamp or to_text(int(time.time())),
            'nonceStr': nonce_str or random_string(32),
            'signType': 'MD5',
            'package': 'prepay_id={0}'.format(prepay_id),
        }
        return calculate_signature(
            data,
            self._client.api_key if not self._client.sandbox else self._client.sandbox_api_key
        )

    def get_jsapi_params(self, prepay_id, timestamp=None, nonce_str=None, jssdk=False):
        """
        获取 JSAPI 参数

        :param prepay_id: 统一下单接口返回的 prepay_id 参数值
        :param timestamp: 可选，时间戳，默认为当前时间戳
        :param nonce_str: 可选，随机字符串，默认自动生成
        :param jssdk: 前端调用方式，默认使用 WeixinJSBridge
                      使用 jssdk 调起支付的话，timestamp 的 s 为小写
                      使用 WeixinJSBridge 调起支付的话，timeStamp 的 S 为大写
        :return: 参数
        """
        data = {
            'appId': self.sub_appid or self.appid,
            'timeStamp': timestamp or to_text(int(time.time())),
            'nonceStr': nonce_str or random_string(32),
            'signType': 'MD5',
            'package': 'prepay_id={0}'.format(prepay_id),
        }
        sign = calculate_signature(
            data,
            self._client.api_key if not self._client.sandbox else self._client.sandbox_api_key
        )
        logger.debug('JSAPI payment parameters: data = %s, sign = %s', data, sign)
        data['paySign'] = sign
        if jssdk:
            data['timestamp'] = data.pop('timeStamp')
        return data