import json
import hmac
import hashlib
import requests
import time
import random
from urllib.parse import quote

# ================= 您的配置（请核对） =================
APP_ID = "wx2517043ca3f39677"
APP_SECRET = "056060b6b13379622f4871acf8dfacc6"  # <--- 必须填写
OFFER_ID = "1450521456"
APPKEY = "4cQkc13i7rkFNbubUJ63ijP2MMCrpB45"  # 现网AppKey
ENV = 0  # 现网环境
PRODUCT_ID = "spgm1001"
OPENID = "ohZdR3fHwVHgQXPSEyIax9Fxqew8"
OUT_TRADE_NO = f"TEST{int(time.time())}{random.randint(100,999)}"
# =====================================================

# 1. 获取 access_token
def get_access_token(appid, secret):
    url = f"https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={appid}&secret={secret}"
    resp = requests.get(url, timeout=10).json()
    if "access_token" in resp:
        return resp["access_token"]
    else:
        raise Exception(f"获取token失败: {resp}")

print("正在获取 access_token...")
token = get_access_token(APP_ID, APP_SECRET)
print(f"access_token 获取成功: {token[:20]}...")

# 2. 准备查询订单接口参数
uri = "/xpay/query_order"
post_data = {
    "offer_id": OFFER_ID,
    "openid": OPENID,
    "out_trade_no": OUT_TRADE_NO,
    "env": ENV
}
body = json.dumps(post_data, separators=(',', ':'), ensure_ascii=False)

# 3. 严格按照官方算法计算 pay_sig
msg = uri + "&" + body
pay_sig = hmac.new(APPKEY.encode('utf-8'), msg.encode('utf-8'), hashlib.sha256).hexdigest()
print(f"计算的 pay_sig: {pay_sig}")

# 4. 调用查询订单接口（签名放在 URL 参数中，已验证有效）
request_url = f"https://api.weixin.qq.com{uri}?access_token={token}&pay_sig={pay_sig}"
headers = {"Content-Type": "application/json"}
print(f"请求 URL: {request_url}")
resp = requests.post(request_url, data=body, headers=headers, timeout=10)
result = resp.json()
print("微信返回：")
print(json.dumps(result, indent=2, ensure_ascii=False))

# 5. 结论分析
errcode = result.get("errcode", -1)
if errcode == 0:
    print("\n🎉 查询订单成功！您的 Offer ID、AppKey、签名算法完全正确。")
    print("问题出在客户端，请检查：")
    print("1. 手机微信版本是否最新（8.0.68+）")
    print("2. 小程序基础库是否 ≥ 2.19.2")
    print("3. 前端 wx.requestVirtualPayment 的 signData 是否为字符串")
    print("4. 是否在真机 Android/iOS 上扫码测试，而不是开发者工具")
elif errcode == 268490002:
    print("\n❌ 签名错误，请核对 AppKey 是否与后台环境一致。")
elif "OFFER_ID_INVALID" in result.get("errmsg", ""):
    print("\n💀 仍然报 OFFER_ID_INVALID，这是微信侧的未解之谜。")
    print("请将本脚本完整输出截图，联系微信客服，要求技术团队核查 offer_id 内部状态。")
else:
    print(f"\n其他错误，错误码: {errcode}，信息: {result.get('errmsg')}")