151 lines
4.7 KiB
Python
151 lines
4.7 KiB
Python
"""
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支付专用商户配置（与提现收款 WechatPayMchConfig / wechat_mch_service 完全分离）。
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读取优先级：
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1) XcxSysPeizhi.pay_*
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2) 过渡回退：旧 weixin_* / settings.WEIXIN_*
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历史订单退款：若订单 pay_mch_id 与当前支付商户不一致，但等于旧 weixin_mchid，则用旧 weixin_* 退款。
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"""
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import logging
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import os
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from django.conf import settings
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from utils.xcx_sys_config import wx_cfg, _val
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logger = logging.getLogger(__name__)
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def pay_cert_base_dir():
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base = getattr(settings, 'WECHAT_PAY_CERT_BASE_DIR', '') or ''
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if base:
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return base
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return os.path.join(str(settings.BASE_DIR), 'zhifuzhengshu')
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def _pay_val(pay_attr, legacy_db_attr, settings_attr, default=''):
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"""pay_* 优先；空则回退旧 weixin_* / settings。"""
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v = _val(pay_attr, None, None)
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if v is not None and v != '':
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return v
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return _val(legacy_db_attr, settings_attr, default) or default
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class PayWxConfig:
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"""支付商户配置代理（属性名兼容旧 WEIXIN_*，便于替换调用点）。"""
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@property
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def WEIXIN_MCHID(self):
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return _pay_val('pay_mch_id', 'weixin_mchid', 'WEIXIN_MCHID', '')
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@property
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def WEIXIN_SHANGHUMIYAO(self):
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return _pay_val('pay_api_v2_key', 'weixin_shanghu_miyao', 'WEIXIN_SHANGHUMIYAO', '')
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@property
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def WEIXIN_NOTIFY_URL(self):
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return _pay_val('pay_notify_url', 'weixin_notify_url', 'WEIXIN_NOTIFY_URL', '')
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@property
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def WEIXIN_CERT_PATH(self):
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return _pay_val('pay_cert_path', 'weixin_cert_path', 'WEIXIN_CERT_PATH', '')
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@property
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def WEIXIN_KEY_PATH(self):
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return _pay_val('pay_key_path', 'weixin_key_path', 'WEIXIN_KEY_PATH', '')
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@property
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def PAY_API_V3_KEY(self):
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return _val('pay_api_v3_key', None, '') or ''
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@property
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def PAY_CERT_SERIAL_NO(self):
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return _val('pay_cert_serial_no', None, '') or ''
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# 别名，语义更清晰
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@property
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def PAY_MCH_ID(self):
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return self.WEIXIN_MCHID
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@property
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def PAY_API_V2_KEY(self):
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return self.WEIXIN_SHANGHUMIYAO
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pay_cfg = PayWxConfig()
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def get_current_pay_mch_id():
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return (pay_cfg.PAY_MCH_ID or '').strip()
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def pay_cfg_as_dict():
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return {
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'MCHID': pay_cfg.WEIXIN_MCHID,
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'KEY': pay_cfg.WEIXIN_SHANGHUMIYAO,
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'NOTIFY_URL': pay_cfg.WEIXIN_NOTIFY_URL,
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'CERT_PATH': pay_cfg.WEIXIN_CERT_PATH,
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'KEY_PATH': pay_cfg.WEIXIN_KEY_PATH,
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'API_V3_KEY': pay_cfg.PAY_API_V3_KEY,
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'CERT_SERIAL_NO': pay_cfg.PAY_CERT_SERIAL_NO,
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}
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def get_pay_wx_cfg(mch_id=None):
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"""
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按商户号取支付配置（用于退款反查）。
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- mch_id 空 / 等于当前支付商户 → 当前 pay_cfg
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- mch_id 等于旧 weixin_mchid 且与当前不同 → 用旧 weixin_*（换号后历史单退款）
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- 否则若 zhifuzhengshu/{mch_id}/ 下有证书，拼路径但仍需密钥；密钥仅当前/旧库有，故仍回退当前并打日志
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"""
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current = pay_cfg_as_dict()
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want = (mch_id or '').strip()
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current_mch = (current.get('MCHID') or '').strip()
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if not want or want == current_mch:
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return current
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legacy_mch = (wx_cfg.WEIXIN_MCHID or '').strip()
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if want == legacy_mch and want != current_mch:
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return {
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'MCHID': wx_cfg.WEIXIN_MCHID,
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'KEY': wx_cfg.WEIXIN_SHANGHUMIYAO,
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'NOTIFY_URL': wx_cfg.WEIXIN_NOTIFY_URL,
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'CERT_PATH': wx_cfg.WEIXIN_CERT_PATH,
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'KEY_PATH': wx_cfg.WEIXIN_KEY_PATH,
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'API_V3_KEY': '',
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'CERT_SERIAL_NO': '',
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}
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cert_path = os.path.join(pay_cert_base_dir(), want, 'apiclient_cert.pem')
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key_path = os.path.join(pay_cert_base_dir(), want, 'apiclient_key.pem')
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if os.path.isfile(cert_path) and os.path.isfile(key_path):
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logger.warning(
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'支付商户 %s 与当前配置 %s 不一致，仅找到证书文件，密钥仍用当前配置，退款可能失败',
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want, current_mch,
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)
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out = dict(current)
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out['MCHID'] = want
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out['CERT_PATH'] = cert_path
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out['KEY_PATH'] = key_path
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return out
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logger.warning(
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'订单支付商户 %s 无可用历史配置，回退当前支付商户 %s',
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want, current_mch,
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)
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return current
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def apply_pay_cfg_to_proxy(cfg_dict):
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"""把 get_pay_wx_cfg 结果转成带 WEIXIN_* 属性的简单对象，兼容旧代码写法。"""
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class _Cfg:
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pass
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o = _Cfg()
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o.WEIXIN_MCHID = cfg_dict.get('MCHID') or ''
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o.WEIXIN_SHANGHUMIYAO = cfg_dict.get('KEY') or ''
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o.WEIXIN_NOTIFY_URL = cfg_dict.get('NOTIFY_URL') or ''
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o.WEIXIN_CERT_PATH = cfg_dict.get('CERT_PATH') or ''
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o.WEIXIN_KEY_PATH = cfg_dict.get('KEY_PATH') or ''
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return o
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