commit cd56658c7f9644f90d10d6c684d91357981985da
Author: Eagle <eagle.cojad@gmail.com>
Date:   Tue Feb 10 20:09:08 2026 +0800

    feat: initial commit — GramJS Telegram relay for OpenClaw inject
    
    Telegram userbot relay that monitors specified group chats and forwards
    bot messages to OpenClaw's inject-http endpoint via webhook.
    
    Features:
    - GramJS (MTProto) for reading bot messages (invisible to Bot API)
    - Media download + multipart form upload
    - BOT_EXCLUDE filter (by user ID or @username)
    - HTML entity formatting (bold, italic, code, pre, links, etc.)
    - Graceful shutdown on SIGINT/SIGTERM
    - .env configuration with validation

diff --git a/.env.example b/.env.example
new file mode 100644
index 0000000..ae91069
--- /dev/null
+++ b/.env.example
@@ -0,0 +1,9 @@
+TG_API_ID=你的api_id
+TG_API_HASH=你的api_hash
+TG_SESSION_NAME=intergram-js
+SOURCE_CHATS=-100123456789
+WEBHOOK_URL=http://openclaw-gateway:18789/telegram/inject
+INJECT_TOKEN=optional_bearer_token
+ACCOUNT_ID=your_account_id
+MAX_MEDIA_SIZE=52428800
+BOT_EXCLUDE=133770478,@BaldEagleBot
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..5761733
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+node_modules/
+.env
+*.session
diff --git a/CLAUDE.md b/CLAUDE.md
new file mode 100644
index 0000000..599ac89
--- /dev/null
+++ b/CLAUDE.md
@@ -0,0 +1,27 @@
+# Intergram-JS - GramJS Telegram Relay
+
+Telegram userbot，監聽指定群組訊息並轉發到 Webhook endpoint。
+GramJS (Node.js) 版本，對標 Python Telethon 版 intergram。
+
+## 技術棧
+
+- Node.js >= 22 (ESM)
+- telegram (GramJS) - Telegram userbot client
+- 原生 fetch + FormData (Node 22+ 內建)
+
+## 常用指令
+
+```bash
+# 安裝依賴
+npm install
+
+# 啟動
+node main.js
+```
+
+## 架構
+
+- `main.js` - 入口點
+- `src/config.js` - 環境變數載入與驗證
+- `src/formatter.js` - Telegram Message → Webhook JSON 轉換
+- `src/relay.js` - GramJS 事件監聽 + fetch 轉發
diff --git a/main.js b/main.js
new file mode 100644
index 0000000..f057ced
--- /dev/null
+++ b/main.js
@@ -0,0 +1,6 @@
+import { run } from "./src/relay.js";
+
+run().catch((err) => {
+  console.error(err);
+  process.exit(1);
+});
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..0c33f64
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,855 @@
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+      "license": "MIT",
+      "dependencies": {
+        "is-typedarray": "^1.0.0"
+      }
+    },
+    "node_modules/utf-8-validate": {
+      "version": "5.0.10",
+      "resolved": "https://registry.npmjs.org/utf-8-validate/-/utf-8-validate-5.0.10.tgz",
+      "integrity": "sha512-Z6czzLq4u8fPOyx7TU6X3dvUZVvoJmxSQ+IcrlmagKhilxlhZgxPK6C5Jqbkw1IDUmFTM+cz9QDnnLTwDz/2gQ==",
+      "hasInstallScript": true,
+      "license": "MIT",
+      "dependencies": {
+        "node-gyp-build": "^4.3.0"
+      },
+      "engines": {
+        "node": ">=6.14.2"
+      }
+    },
+    "node_modules/websocket": {
+      "version": "1.0.35",
+      "resolved": "https://registry.npmjs.org/websocket/-/websocket-1.0.35.tgz",
+      "integrity": "sha512-/REy6amwPZl44DDzvRCkaI1q1bIiQB0mEFQLUrhz3z2EK91cp3n72rAjUlrTP0zV22HJIUOVHQGPxhFRjxjt+Q==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "bufferutil": "^4.0.1",
+        "debug": "^2.2.0",
+        "es5-ext": "^0.10.63",
+        "typedarray-to-buffer": "^3.1.5",
+        "utf-8-validate": "^5.0.2",
+        "yaeti": "^0.0.6"
+      },
+      "engines": {
+        "node": ">=4.0.0"
+      }
+    },
+    "node_modules/wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ==",
+      "license": "ISC"
+    },
+    "node_modules/write-file-atomic": {
+      "version": "1.3.4",
+      "resolved": "https://registry.npmjs.org/write-file-atomic/-/write-file-atomic-1.3.4.tgz",
+      "integrity": "sha512-SdrHoC/yVBPpV0Xq/mUZQIpW2sWXAShb/V4pomcJXh92RuaO+f3UTWItiR3Px+pLnV2PvC2/bfn5cwr5X6Vfxw==",
+      "license": "ISC",
+      "dependencies": {
+        "graceful-fs": "^4.1.11",
+        "imurmurhash": "^0.1.4",
+        "slide": "^1.1.5"
+      }
+    },
+    "node_modules/yaeti": {
+      "version": "0.0.6",
+      "resolved": "https://registry.npmjs.org/yaeti/-/yaeti-0.0.6.tgz",
+      "integrity": "sha512-MvQa//+KcZCUkBTIC9blM+CU9J2GzuTytsOUwf2lidtvkx/6gnEp1QvJv34t9vdjhFmha/mUiNDbN0D0mJWdug==",
+      "deprecated": "Package no longer supported. Contact Support at https://www.npmjs.com/support for more info.",
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.32"
+      }
+    }
+  }
+}
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..4c4fb57
--- /dev/null
+++ b/package.json
@@ -0,0 +1,13 @@
+{
+  "name": "intergram-js",
+  "version": "1.0.0",
+  "type": "module",
+  "main": "main.js",
+  "scripts": {
+    "start": "node main.js"
+  },
+  "dependencies": {
+    "telegram": "^2.26.22",
+    "input": "^1.0.1"
+  }
+}
diff --git a/src/config.js b/src/config.js
new file mode 100644
index 0000000..c3b61d1
--- /dev/null
+++ b/src/config.js
@@ -0,0 +1,70 @@
+import { readFileSync, existsSync } from "fs";
+import { resolve, dirname } from "path";
+import { fileURLToPath } from "url";
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+
+function loadDotenv() {
+  const envPath = resolve(__dirname, "..", ".env");
+  if (!existsSync(envPath)) return;
+  for (const raw of readFileSync(envPath, "utf8").split("\n")) {
+    const line = raw.trim();
+    if (!line || line.startsWith("#")) continue;
+    const idx = line.indexOf("=");
+    if (idx === -1) continue;
+    const key = line.slice(0, idx).trim();
+    const value = line.slice(idx + 1).trim();
+    if (key && !(key in process.env)) {
+      process.env[key] = value;
+    }
+  }
+}
+
+loadDotenv();
+
+function requireEnv(name) {
+  const val = process.env[name];
+  if (!val) {
+    console.error(`Missing required environment variable: ${name}`);
+    process.exit(1);
+  }
+  return val;
+}
+
+export const API_ID = parseInt(requireEnv("TG_API_ID"), 10);
+export const API_HASH = requireEnv("TG_API_HASH");
+export const SESSION_NAME = process.env.TG_SESSION_NAME || "intergram-js";
+
+export const SOURCE_CHATS = requireEnv("SOURCE_CHATS")
+  .split(",")
+  .map((c) => parseInt(c.trim(), 10));
+
+export const WEBHOOK_URL = requireEnv("WEBHOOK_URL");
+export const INJECT_TOKEN = process.env.INJECT_TOKEN || "";
+export const ACCOUNT_ID = process.env.ACCOUNT_ID || "";
+
+export const MAX_MEDIA_SIZE = parseInt(
+  process.env.MAX_MEDIA_SIZE || String(50 * 1024 * 1024),
+  10,
+);
+
+// BOT_EXCLUDE="133770478,@BaldEagleBot"
+// Supports numeric user IDs and @username
+function parseBotExclude(raw) {
+  if (!raw) return { ids: new Set(), usernames: new Set() };
+  const ids = new Set();
+  const usernames = new Set();
+  for (const token of raw.split(",")) {
+    const t = token.trim();
+    if (!t) continue;
+    if (t.startsWith("@")) {
+      usernames.add(t.slice(1).toLowerCase());
+    } else {
+      const n = parseInt(t, 10);
+      if (!isNaN(n)) ids.add(n);
+    }
+  }
+  return { ids, usernames };
+}
+
+export const BOT_EXCLUDE = parseBotExclude(process.env.BOT_EXCLUDE);
diff --git a/src/formatter.js b/src/formatter.js
new file mode 100644
index 0000000..0388324
--- /dev/null
+++ b/src/formatter.js
@@ -0,0 +1,197 @@
+import { Api } from "telegram";
+
+function escapeHtml(text) {
+  return text
+    .replace(/&/g, "&amp;")
+    .replace(/</g, "&lt;")
+    .replace(/>/g, "&gt;")
+    .replace(/"/g, "&quot;");
+}
+
+export function entitiesToHtml(text, entities) {
+  if (!text || !entities || entities.length === 0) {
+    return escapeHtml(text || "");
+  }
+
+  const buf = Buffer.from(text, "utf16le");
+  const insertions = [];
+
+  for (const ent of entities) {
+    const start = ent.offset * 2;
+    const end = (ent.offset + ent.length) * 2;
+    let openTag = "";
+    let closeTag = "";
+
+    if (ent instanceof Api.MessageEntityBold) {
+      openTag = "<b>"; closeTag = "</b>";
+    } else if (ent instanceof Api.MessageEntityItalic) {
+      openTag = "<i>"; closeTag = "</i>";
+    } else if (ent instanceof Api.MessageEntityCode) {
+      openTag = "<code>"; closeTag = "</code>";
+    } else if (ent instanceof Api.MessageEntityPre) {
+      const lang = ent.language || "";
+      openTag = lang
+        ? `<pre><code class="language-${escapeHtml(lang)}">`
+        : "<pre><code>";
+      closeTag = "</code></pre>";
+    } else if (ent instanceof Api.MessageEntityStrike) {
+      openTag = "<s>"; closeTag = "</s>";
+    } else if (ent instanceof Api.MessageEntityUnderline) {
+      openTag = "<u>"; closeTag = "</u>";
+    } else if (ent instanceof Api.MessageEntitySpoiler) {
+      openTag = '<span class="spoiler">'; closeTag = "</span>";
+    } else if (ent instanceof Api.MessageEntityTextUrl) {
+      openTag = `<a href="${escapeHtml(ent.url)}">`; closeTag = "</a>";
+    }
+
+    if (openTag) {
+      insertions.push({ start, end, openTag, closeTag });
+    }
+  }
+
+  // Build open/close maps by byte position
+  const opens = new Map();
+  const closes = new Map();
+  for (const { start, end, openTag, closeTag } of insertions) {
+    if (!opens.has(start)) opens.set(start, []);
+    opens.get(start).push(openTag);
+    if (!closes.has(end)) closes.set(end, []);
+    closes.get(end).unshift(closeTag);
+  }
+
+  const positions = [
+    ...new Set([...opens.keys(), ...closes.keys(), buf.length]),
+  ].sort((a, b) => a - b);
+
+  const result = [];
+  let pos = 0;
+
+  for (const target of positions) {
+    if (target > pos) {
+      const chunk = buf.subarray(pos, target).toString("utf16le");
+      result.push(escapeHtml(chunk));
+      pos = target;
+    }
+    for (const tag of closes.get(target) || []) result.push(tag);
+    for (const tag of opens.get(target) || []) result.push(tag);
+  }
+
+  if (pos < buf.length) {
+    result.push(escapeHtml(buf.subarray(pos).toString("utf16le")));
+  }
+
+  return result.join("");
+}
+
+export function mediaType(message) {
+  const media = message.media;
+  if (!media) return null;
+  if (media instanceof Api.MessageMediaPhoto) return "photo";
+  if (media instanceof Api.MessageMediaDocument) {
+    const doc = media.document;
+    if (doc && doc.attributes) {
+      for (const attr of doc.attributes) {
+        if (attr instanceof Api.DocumentAttributeVideo) return "video";
+        if (attr instanceof Api.DocumentAttributeAudio) return "audio";
+        if (attr instanceof Api.DocumentAttributeSticker) return "sticker";
+        if (attr instanceof Api.DocumentAttributeAnimated) return "animation";
+      }
+      return "document";
+    }
+  }
+  if (media instanceof Api.MessageMediaWebPage) return "webpage";
+  return "unknown";
+}
+
+export function mediaSize(message) {
+  const media = message.media;
+  if (media instanceof Api.MessageMediaDocument && media.document) {
+    return Number(media.document.size || 0);
+  }
+  if (media instanceof Api.MessageMediaPhoto && media.photo) {
+    const sizes = media.photo.sizes || [];
+    for (let i = sizes.length - 1; i >= 0; i--) {
+      if (sizes[i].size != null) return Number(sizes[i].size);
+    }
+    return 0;
+  }
+  return 0;
+}
+
+function chatType(chat) {
+  if (chat instanceof Api.Channel) {
+    return chat.megagroup ? "supergroup" : "channel";
+  }
+  if (chat instanceof Api.Chat) return "group";
+  return "private";
+}
+
+function toNum(v) {
+  return typeof v === "bigint" ? Number(v) : v;
+}
+
+export async function formatMessage(client, message, accountId = "") {
+  let sender = null;
+  if (message.senderId) {
+    try { sender = await client.getEntity(message.senderId); } catch {}
+  }
+
+  let chat = null;
+  try { chat = await client.getEntity(message.chatId); } catch {}
+
+  // from (sender)
+  const fromObj = {};
+  if (sender) {
+    fromObj.id = toNum(sender.id);
+    fromObj.is_bot = sender.bot || false;
+    fromObj.first_name = sender.firstName || "";
+    if (sender.lastName) fromObj.last_name = sender.lastName;
+    if (sender.username) fromObj.username = sender.username;
+  }
+
+  // chat
+  const chatObj = {
+    id: toNum(message.chatId),
+    type: chat ? chatType(chat) : "unknown",
+  };
+  if (chat) {
+    if (chat.title) chatObj.title = chat.title;
+    if (chat.username) chatObj.username = chat.username;
+  }
+
+  // message body
+  const text = message.message || "";
+  const msgObj = {
+    message_id: message.id,
+    from: fromObj,
+    chat: chatObj,
+    date: message.date,
+    text,
+    text_html: entitiesToHtml(text, message.entities),
+  };
+
+  // reply
+  if (message.replyTo) {
+    msgObj.reply_to_message = {
+      message_id: message.replyTo.replyToMsgId,
+    };
+  }
+
+  // media
+  const mt = mediaType(message);
+  if (mt && mt !== "webpage") {
+    msgObj.media_type = mt;
+    msgObj.has_media = true;
+    msgObj.media_size = mediaSize(message);
+  }
+
+  const result = {
+    update: {
+      update_id: message.id,
+      message: msgObj,
+    },
+  };
+  if (accountId) result.accountId = accountId;
+
+  return result;
+}
diff --git a/src/relay.js b/src/relay.js
new file mode 100644
index 0000000..4d98ce1
--- /dev/null
+++ b/src/relay.js
@@ -0,0 +1,165 @@
+import { TelegramClient, Api } from "telegram";
+import { StringSession } from "telegram/sessions/index.js";
+import { NewMessage } from "telegram/events/index.js";
+import { createInterface } from "readline/promises";
+import { readFileSync, writeFileSync, existsSync } from "fs";
+import * as config from "./config.js";
+import { formatMessage } from "./formatter.js";
+
+function ts() {
+  return new Date().toISOString();
+}
+
+const log = {
+  info: (...args) => console.log(ts(), "[INFO] intergram-js:", ...args),
+  error: (...args) => console.error(ts(), "[ERROR] intergram-js:", ...args),
+};
+
+function loadSession() {
+  const file = `${config.SESSION_NAME}.session`;
+  if (existsSync(file)) {
+    return new StringSession(readFileSync(file, "utf8").trim());
+  }
+  return new StringSession("");
+}
+
+function saveSession(client) {
+  const file = `${config.SESSION_NAME}.session`;
+  writeFileSync(file, client.session.save(), "utf8");
+}
+
+async function sendWebhook(payload, mediaBytes, filename) {
+  const headers = {};
+  if (config.INJECT_TOKEN) {
+    headers["Authorization"] = `Bearer ${config.INJECT_TOKEN}`;
+  }
+
+  let resp;
+  if (mediaBytes && filename) {
+    const form = new FormData();
+    form.append("payload", JSON.stringify(payload));
+    form.append("media", new Blob([mediaBytes]), filename);
+    resp = await fetch(config.WEBHOOK_URL, {
+      method: "POST",
+      headers,
+      body: form,
+    });
+  } else {
+    headers["Content-Type"] = "application/json";
+    resp = await fetch(config.WEBHOOK_URL, {
+      method: "POST",
+      headers,
+      body: JSON.stringify(payload),
+    });
+  }
+
+  const body = await resp.text();
+  return [resp.status, body];
+}
+
+export async function run() {
+  const session = loadSession();
+  const client = new TelegramClient(session, config.API_ID, config.API_HASH, {
+    connectionRetries: 5,
+  });
+
+  const rl = createInterface({ input: process.stdin, output: process.stdout });
+
+  await client.start({
+    phoneNumber: () => rl.question("Phone number: "),
+    password: () => rl.question("Password (2FA): "),
+    phoneCode: () => rl.question("Code: "),
+    onError: (err) => log.error("Auth error:", err),
+  });
+
+  rl.close();
+  saveSession(client);
+
+  const me = await client.getMe();
+  log.info(`Logged in as ${me.firstName}`);
+  log.info(`Listening on chats: ${config.SOURCE_CHATS}`);
+  log.info(`Webhook: ${config.WEBHOOK_URL}`);
+
+  client.addEventHandler(async (event) => {
+    const message = event.message;
+
+    // Only relay messages from bots
+    let sender = null;
+    if (message.senderId) {
+      try { sender = await client.getEntity(message.senderId); } catch {}
+    }
+    const username = sender?.username || "";
+    if (!username.toLowerCase().endsWith("bot")) return;
+
+    // Check BOT_EXCLUDE (by id or @username)
+    const senderId = Number(message.senderId);
+    if (config.BOT_EXCLUDE.ids.has(senderId)) return;
+    if (username && config.BOT_EXCLUDE.usernames.has(username.toLowerCase())) return;
+
+    // Format
+    let payload;
+    try {
+      payload = await formatMessage(client, message, config.ACCOUNT_ID);
+    } catch (err) {
+      log.error(`Failed to format message ${message.id}:`, err);
+      return;
+    }
+
+    const msg = payload.update.message;
+    let mediaBytes = null;
+    let filename = null;
+
+    // Download media if present and within size limit
+    if (msg.has_media) {
+      if ((msg.media_size || 0) <= config.MAX_MEDIA_SIZE) {
+        try {
+          const buf = await client.downloadMedia(message);
+          if (buf) mediaBytes = buf;
+
+          if (message.media?.document?.attributes) {
+            for (const attr of message.media.document.attributes) {
+              if (attr instanceof Api.DocumentAttributeFilename && attr.fileName) {
+                filename = attr.fileName;
+                break;
+              }
+            }
+          }
+          if (!filename) {
+            filename = `${msg.media_type || "file"}_${message.id}`;
+          }
+        } catch (err) {
+          log.error(`Failed to download media for message ${message.id}:`, err);
+        }
+      } else {
+        log.info(
+          `Skipping media for message ${message.id}: size ${msg.media_size || 0} exceeds limit`,
+        );
+      }
+    }
+
+    // Send webhook
+    try {
+      const [status, body] = await sendWebhook(payload, mediaBytes, filename);
+      const senderName = msg.from?.first_name || "?";
+      const textPreview = (msg.text || "").slice(0, 80);
+      const mediaInfo = msg.has_media ? ` [${msg.media_type}]` : "";
+      log.info(
+        `Relayed #${message.id} ${senderName}: ${textPreview}${mediaInfo} → ${status} ${status >= 400 ? body.slice(0, 120) : "OK"}`,
+      );
+    } catch (err) {
+      log.error(`Failed to send webhook for message ${message.id}:`, err);
+    }
+  }, new NewMessage({ chats: config.SOURCE_CHATS }));
+
+  log.info("Intergram-JS relay is running.");
+
+  // Graceful shutdown
+  const shutdown = async () => {
+    log.info("Shutting down...");
+    await client.disconnect();
+    log.info("Bye.");
+    process.exit(0);
+  };
+  process.on("SIGINT", shutdown);
+  process.on("SIGTERM", shutdown);
+}