feat: 报名逻辑

cloudfunctions/getOpenid/index.js

@@ -0,0 +1,18 @@
+// 云函数入口文件
+const cloud = require("wx-server-sdk");
+
+cloud.init({ env: cloud.DYNAMIC_CURRENT_ENV }); // 使用当前云环境
+
+// 云函数入口函数
+exports.main = async (event, context) => {
+  return new Promise((resolve, reject) => {
+    const wxContext = cloud.getWXContext();
+
+    resolve({
+      event,
+      openid: wxContext.OPENID,
+      appid: wxContext.APPID,
+      unionid: wxContext.UNIONID,
+    });
+  });
+};