fix: harden traffic telegram alert delivery and fallback chat id

apps/web/src/lib/traffic-alert.ts

@@ -1,7 +1,12 @@
-import { request } from "node:https";
 import { prisma } from "./prisma";
 import { Prisma } from "../../prisma/generated/client";
 
+const TELEGRAM_BOT_ID_FROM_TOKEN = (() => {
+  if (!process.env.TELEGRAM_BOT_TOKEN) return undefined;
+  const [candidate] = process.env.TELEGRAM_BOT_TOKEN.split(":", 1);
+  return candidate?.trim() || undefined;
+})();
+
 export type TrafficAlertEvent = {
   level: "info" | "warning" | "error";
   action: string;
@@ -26,7 +31,95 @@ const TELEGRAM_CHAT_ID = (
   process.env.VIBEWORKAIAGENTBOT_CHAT_ID ||
   process.env.VIBEWORK_AI_BOT_CHAT_ID
 )?.trim();
+const TELEGRAM_FALLBACK_FROM_UPDATES =
+  process.env.TELEGRAM_FALLBACK_FROM_UPDATES?.trim().toLowerCase() === "true";
 const DISCORD_WEBHOOK_URL = process.env.DISCORD_WEBHOOK_URL?.trim();
+const TELEGRAM_NOTIFY_TIMEOUT_MS = Math.max(
+  1,
+  Number.parseInt(process.env.TELEGRAM_NOTIFY_TIMEOUT_MS?.trim() || "3000", 10) || 3000
+);
+const TELEGRAM_NOTIFY_MAX_ATTEMPTS = Math.max(
+  1,
+  Number.parseInt(process.env.TELEGRAM_NOTIFY_MAX_ATTEMPTS?.trim() || "2", 10) || 2
+);
+const TELEGRAM_NOTIFY_RETRY_BASE_DELAY_MS = Math.max(
+  100,
+  Number.parseInt(process.env.TELEGRAM_NOTIFY_RETRY_BASE_DELAY_MS?.trim() || "400", 10) || 400
+);
+
+const sleep = (ms: number) => new Promise((resolve) => setTimeout(resolve, ms));
+
+let cachedTelegramFallbackChatId: string | null | undefined = undefined;
+
+function normalizeChatId(rawChatId: string | undefined) {
+  if (!rawChatId) return undefined;
+  const normalized = rawChatId.trim();
+  if (!normalized) return undefined;
+  if (TELEGRAM_BOT_ID_FROM_TOKEN && normalized === TELEGRAM_BOT_ID_FROM_TOKEN) {
+    return undefined;
+  }
+  return normalized;
+}
+
+async function resolveTelegramFallbackChatId(): Promise<string | undefined> {
+  if (!TELEGRAM_BOT_TOKEN) {
+    return undefined;
+  }
+
+  if (cachedTelegramFallbackChatId !== undefined) {
+    return cachedTelegramFallbackChatId || undefined;
+  }
+
+  try {
+    const response = await fetch(`https://api.telegram.org/bot${TELEGRAM_BOT_TOKEN}/getUpdates?limit=20`, {
+      method: "GET",
+      signal: AbortSignal.timeout(TELEGRAM_NOTIFY_TIMEOUT_MS),
+    });
+
+    if (!response.ok) {
+      return undefined;
+    }
+
+    const data = (await response.json()) as {
+      result?: Array<Record<string, unknown>>;
+    };
+
+    const updates = Array.isArray(data.result) ? data.result : [];
+    for (let index = updates.length - 1; index >= 0; index -= 1) {
+      const update = updates[index];
+      const chatCandidate =
+        (update?.message as { chat?: { id?: number | string } } | undefined)?.chat?.id ??
+        (update?.edited_message as { chat?: { id?: number | string } } | undefined)?.chat?.id ??
+        (update?.callback_query as { message?: { chat?: { id?: number | string } } } | undefined)?.message?.chat?.id ??
+        (update?.channel_post as { chat?: { id?: number | string } } | undefined)?.chat?.id;
+
+      const normalized = normalizeChatId(String(chatCandidate ?? ""));
+      if (normalized) {
+        cachedTelegramFallbackChatId = normalized;
+        console.log(`[Traffic alert] Resolved Telegram chat_id from updates: ${normalized}`);
+        return normalized;
+      }
+    }
+
+    cachedTelegramFallbackChatId = null;
+    return undefined;
+  } catch (error) {
+    console.warn("[Traffic alert] resolveTelegramFallbackChatId failed", error);
+    cachedTelegramFallbackChatId = null;
+    return undefined;
+  }
+}
+
+async function resolveTelegramChatId(): Promise<string | undefined> {
+  const explicitChatId = normalizeChatId(TELEGRAM_CHAT_ID);
+  if (explicitChatId) return explicitChatId;
+
+  if (!TELEGRAM_FALLBACK_FROM_UPDATES) {
+    return undefined;
+  }
+
+  return resolveTelegramFallbackChatId();
+}
 
 function escapeMarkdown(value: unknown) {
   if (value === null || value === undefined) return "";
@@ -55,43 +148,34 @@ function buildTelegramMessage(event: TrafficAlertEvent) {
 async function sendViaHttps(url: string, body: Record<string, unknown>) {
   return new Promise<void>((resolve, reject) => {
     try {
-      const parsed = new URL(url);
       const payload = JSON.stringify(body);
+      let responseBody = "";
 
-      const requestHandle = request(
-        {
-          method: "POST",
-          hostname: parsed.hostname,
-          path: `${parsed.pathname}${parsed.search}`,
-          port: 443,
-          protocol: "https:",
-          headers: {
-            "content-type": "application/json",
-            "content-length": Buffer.byteLength(payload),
-          },
+      fetch(url, {
+        method: "POST",
+        headers: {
+          "content-type": "application/json",
+          "content-length": String(Buffer.byteLength(payload)),
         },
-        (response) => {
-          let responseBody = "";
-          response.on("data", (chunk) => {
-            responseBody += chunk;
-          });
+        body: payload,
+        signal: AbortSignal.timeout(TELEGRAM_NOTIFY_TIMEOUT_MS),
+      })
+        .then(async (response) => {
+          responseBody = await response.text();
+          if (response.status >= 200 && response.status < 300) {
+            resolve();
+            return;
+          }
 
-          response.on("end", () => {
-            if (response.statusCode && response.statusCode >= 200 && response.statusCode < 300) {
-              return resolve();
-            }
-
-            reject(new Error(`Telegram API ${response.statusCode}: ${responseBody.slice(0, 200)}`));
-          });
-        }
-      );
-
-      requestHandle.on("error", reject);
-      requestHandle.setTimeout(3000, () => {
-        requestHandle.destroy(new Error("Telegram request timeout"));
-      });
-      requestHandle.write(payload);
-      requestHandle.end();
+          reject(new Error(`Telegram API ${response.status}: ${responseBody.slice(0, 200)}`));
+        })
+        .catch((error) => {
+          if (error && error.name === "TimeoutError") {
+            reject(new Error(`Telegram API timeout ${TELEGRAM_NOTIFY_TIMEOUT_MS}ms`));
+            return;
+          }
+          reject(error);
+        });
     } catch (error) {
       reject(error);
     }
@@ -153,6 +237,8 @@ export async function sendTrafficAlert(event: TrafficAlertEvent): Promise<void>
     ...event,
   };
 
+  const resolvedTelegramChatId = await resolveTelegramChatId();
+
   const notifyTargets = [
     TRAFFIC_WEBHOOK_URL && {
       kind: "generic",
@@ -179,7 +265,8 @@ export async function sendTrafficAlert(event: TrafficAlertEvent): Promise<void>
         }),
       },
     },
-    TELEGRAM_BOT_TOKEN && TELEGRAM_CHAT_ID && {
+    TELEGRAM_BOT_TOKEN &&
+    resolvedTelegramChatId && {
       kind: "telegram",
       url: `https://api.telegram.org/bot${TELEGRAM_BOT_TOKEN}/sendMessage`,
       init: {
@@ -187,11 +274,11 @@ export async function sendTrafficAlert(event: TrafficAlertEvent): Promise<void>
         headers: {
           "content-type": "application/json",
         },
-      body: JSON.stringify({
-        chat_id: TELEGRAM_CHAT_ID,
-        text: buildTelegramMessage(event),
-        parse_mode: "MarkdownV2",
-      }),
+        body: JSON.stringify({
+          chat_id: resolvedTelegramChatId,
+          text: buildTelegramMessage(event),
+          parse_mode: "MarkdownV2",
+        }),
       },
     },
   ].filter(Boolean) as Array<{ kind: string; url: string; init: RequestInit }>;
@@ -205,7 +292,20 @@ export async function sendTrafficAlert(event: TrafficAlertEvent): Promise<void>
           const payload = target.init.body
             ? JSON.parse(typeof target.init.body === "string" ? target.init.body : "{}")
             : {};
-          await sendViaHttps(target.url, payload);
+
+          let attempt = 0;
+          while (true) {
+            try {
+              await sendViaHttps(target.url, payload);
+              return;
+            } catch (error) {
+              attempt += 1;
+              if (attempt >= TELEGRAM_NOTIFY_MAX_ATTEMPTS) {
+                throw error;
+              }
+              await sleep(TELEGRAM_NOTIFY_RETRY_BASE_DELAY_MS * attempt);
+            }
+          }
         } else {
           const response = await fetch(target.url, { ...target.init, signal: AbortSignal.timeout(3000) });
           if (!response.ok) {