Add Zalo channel adapter with webhook and send path

src/gateway/server.ts

@@ -53,6 +53,7 @@ import type { GoogleChatAdapter } from '../channels/googleChat/adapter.js';
 import type { BlueBubblesAdapter } from '../channels/bluebubbles/adapter.js';
 import type { LineAdapter } from '../channels/line/adapter.js';
 import type { FeishuAdapter } from '../channels/feishu/adapter.js';
+import type { ZaloAdapter } from '../channels/zalo/adapter.js';
 
 export interface GatewayServerConfig {
   port: number;
@@ -126,6 +127,8 @@ export interface GatewayServerConfig {
   lineHandler?: Pick<LineAdapter, 'handleRequest'>;
   /** Optional Feishu adapter for inbound webhook events. */
   feishuHandler?: Pick<FeishuAdapter, 'handleRequest'>;
+  /** Optional Zalo adapter for inbound webhook events. */
+  zaloHandler?: Pick<ZaloAdapter, 'handleRequest'>;
 }
 
 export class GatewayServer {
@@ -742,6 +745,12 @@ export class GatewayServer {
       return;
     }
 
+    // Zalo events route — bypass gateway auth (Zalo webhook posts directly)
+    if (this.config.zaloHandler && req.method === 'POST' && req.url?.startsWith('/zalo/events')) {
+      await this.config.zaloHandler.handleRequest(req, res);
+      return;
+    }
+
     // Apply auth to HTTP requests when configured
     const authConfig = this.config.auth ?? {};
     if (this.config.authHttp !== false && authConfig.token) {
@@ -870,6 +879,11 @@ export class GatewayServer {
     this.config.feishuHandler = handler;
   }
 
+  /** Set the Zalo handler for inbound webhook HTTP routes (late binding). */
+  setZaloHandler(handler: Pick<ZaloAdapter, 'handleRequest'>): void {
+    this.config.zaloHandler = handler;
+  }
+
   private async startDiscovery(host: string, port: number): Promise<void> {
     const discovery = this.config.discovery;
     if (!discovery?.enabled) {