feat: add authentication for webhook endpoint using password verification

src/index.ts

@@ -19,6 +19,8 @@ declare global {
 
   const WEBHOOK_PREFIX: string;
 
+  const WEBHOOK_PASSWORD: string;
+
   const TG_GROUPS: KVNamespace;
 }
 
@@ -32,6 +34,16 @@ router.get("/", (context) => {
 });
 
 router.post("/bot", async (context) => {
+  // Check for authentication password in query parameter
+  const password = context.req.url.searchParams.get('password');
+  const expectedPassword = WEBHOOK_PASSWORD;
+  
+  if (!password || password !== expectedPassword) {
+    context.res.status = 401;
+    context.res.body = { ok: false, error: "Unauthorized" };
+    return;
+  }
+  
   const result: Update = await context.req.body.json();
   await processUpdate(result);
   console.log(JSON.stringify(result, null, 2));

src/message.ts

@@ -32,7 +32,7 @@ export function formatRichMessage(message: RichMessage): string {
 
 `
       : ""
-  }<b>${escapeHTML(message.event)}</b>${
+  }<b>${escapeHTML(message.event ?? "Unknown event")}</b>${
     (message.text ?? message.message)
       ? `