🚧 refactoring is ongoing

common/message.js

@@ -0,0 +1,24 @@
+const { pushWechatMessage } = require('./wechat');
+
+module.exports = {
+  async processMessage(userPrefix, message) {
+    let result = {
+      success: false,
+      message: `unsupported message type ${message.type}`,
+    };
+    switch (message.type) {
+      case '0': // WeChat message
+        result = await pushWechatMessage(userPrefix, message);
+        break;
+      case '1': // Email message
+        // TODO: Email message
+        break;
+      case '2': // HTTP GET request
+        // TODO: HTTP GET request
+        break;
+      default:
+        break;
+    }
+    return result;
+  },
+};