feat: bridge Nexus chat with Telegram polling relay (#1537)

app.js

@@ -2148,7 +2148,7 @@ function setupControls() {
 
 function sendChatMessage(overrideText = null) {
   // Mine chat message to MemPalace
-  if (overrideText) {
+  if (overrideText && window.electronAPI?.execPython) {
     window.electronAPI.execPython(`mempalace add_drawer "${this.wing}" "chat" "${overrideText}"`);
   }
   const input = document.getElementById('chat-input');
@@ -2156,19 +2156,25 @@ function sendChatMessage(overrideText = null) {
   if (!text) return;
   addChatMessage('user', text);
   if (!overrideText) input.value = '';
-  setTimeout(() => {
-    const responses = [
-      'Processing your request through the harness...',
-      'I have noted this in my thought stream.',
-      'Acknowledged. Routing to appropriate agent loop.',
-      'The sovereign space recognizes your command.',
-      'Running analysis. Results will appear on the main terminal.',
-      'My crystal ball says... yes. Implementing.',
-      'Understood, Alexander. Adjusting priorities.',
-    ];
-    const resp = responses[Math.floor(Math.random() * responses.length)];
-    addChatMessage('timmy', resp);
-  }, 500 + Math.random() * 1000);
+
+  if (!wsConnected || !hermesWs || hermesWs.readyState !== WebSocket.OPEN) {
+    addChatMessage('error', 'Message not sent. Nexus gateway offline.');
+    input.blur();
+    return;
+  }
+
+  try {
+    hermesWs.send(JSON.stringify({
+      type: 'chat',
+      text,
+      agent: 'nexus',
+      source: 'nexus_chat',
+      timestamp: Date.now(),
+    }));
+  } catch (err) {
+    console.error('Failed to send Nexus chat message:', err);
+    addChatMessage('error', 'Message not sent. Nexus gateway offline.');
+  }
   input.blur();
 }
 

nexus/telegram_bridge.py

@@ -0,0 +1,113 @@
+from __future__ import annotations
+
+import asyncio
+import json
+import os
+import urllib.parse
+import urllib.request
+from typing import Any, Callable, Optional
+
+
+class TelegramBridgeConfig:
+    def __init__(self, bot_token: str, chat_id: str, poll_timeout: int = 4):
+        self.bot_token = bot_token
+        self.chat_id = chat_id
+        self.poll_timeout = poll_timeout
+
+    @property
+    def api_base(self) -> str:
+        return f"https://api.telegram.org/bot{self.bot_token}"
+
+
+def config_from_env(env: Optional[dict[str, str]] = None) -> Optional[TelegramBridgeConfig]:
+    env = env or os.environ
+    bot_token = env.get("NEXUS_TELEGRAM_BOT_TOKEN") or env.get("TELEGRAM_BOT_TOKEN")
+    chat_id = (
+        env.get("NEXUS_TELEGRAM_CHAT_ID")
+        or env.get("TELEGRAM_HOME_CHANNEL")
+        or env.get("TELEGRAM_CHAT_ID")
+    )
+    if not bot_token or not chat_id:
+        return None
+    return TelegramBridgeConfig(bot_token=bot_token, chat_id=str(chat_id), poll_timeout=int(env.get("NEXUS_TELEGRAM_POLL_TIMEOUT", "4")))
+
+
+def format_outbound_text(sender: str, text: str) -> str:
+    sender = (sender or "Nexus").strip() or "Nexus"
+    return f"[{sender}] {text}"
+
+
+def extract_update_message(update: dict[str, Any], expected_chat_id: str) -> Optional[dict[str, Any]]:
+    message = update.get("message") or update.get("edited_message")
+    if not isinstance(message, dict):
+        return None
+    if str((message.get("chat") or {}).get("id")) != str(expected_chat_id):
+        return None
+    text = message.get("text")
+    if not text:
+        return None
+    sender_info = message.get("from") or {}
+    sender = sender_info.get("first_name") or sender_info.get("username") or "Telegram"
+    return {
+        "update_id": update.get("update_id", 0),
+        "sender": sender,
+        "text": text,
+        "timestamp": message.get("date"),
+        "source": "telegram",
+    }
+
+
+def _default_get_json(url: str) -> dict[str, Any]:
+    with urllib.request.urlopen(url, timeout=15) as resp:
+        return json.loads(resp.read().decode())
+
+
+def _default_post_json(url: str, payload: dict[str, Any]) -> dict[str, Any]:
+    data = json.dumps(payload).encode()
+    req = urllib.request.Request(url, data=data, headers={"Content-Type": "application/json"}, method="POST")
+    with urllib.request.urlopen(req, timeout=15) as resp:
+        return json.loads(resp.read().decode())
+
+
+class TelegramBridge:
+    def __init__(
+        self,
+        config: TelegramBridgeConfig,
+        *,
+        get_json: Optional[Callable[[str], dict[str, Any]]] = None,
+        post_json: Optional[Callable[[str, dict[str, Any]], dict[str, Any]]] = None,
+        logger: Any = None,
+    ) -> None:
+        self.config = config
+        self.get_json = get_json or _default_get_json
+        self.post_json = post_json or _default_post_json
+        self.logger = logger
+
+    async def send_chat(self, text: str, sender: str = "Nexus") -> dict[str, Any]:
+        payload = {
+            "chat_id": self.config.chat_id,
+            "text": format_outbound_text(sender, text),
+        }
+        result = await asyncio.to_thread(self.post_json, f"{self.config.api_base}/sendMessage", payload)
+        if self.logger and not result.get("ok", True):
+            self.logger.error("Telegram sendMessage failed: %s", result)
+        return result
+
+    async def poll_once(self, last_update_id: int) -> tuple[int, list[dict[str, Any]]]:
+        params = urllib.parse.urlencode({
+            "offset": last_update_id + 1,
+            "timeout": self.config.poll_timeout,
+        })
+        result = await asyncio.to_thread(self.get_json, f"{self.config.api_base}/getUpdates?{params}")
+        if not result.get("ok", False):
+            if self.logger:
+                self.logger.error("Telegram getUpdates failed: %s", result)
+            return last_update_id, []
+        messages: list[dict[str, Any]] = []
+        new_last_update_id = last_update_id
+        for update in result.get("result", []):
+            new_last_update_id = max(new_last_update_id, int(update.get("update_id", last_update_id)))
+            msg = extract_update_message(update, self.config.chat_id)
+            if msg:
+                messages.append(msg)
+        return new_last_update_id, messages

server.py

@@ -23,6 +23,8 @@ import time
 from typing import Set, Dict, Optional
 from collections import defaultdict
 
+from nexus.telegram_bridge import TelegramBridge, config_from_env
+
 # Branch protected file - see POLICY.md
 import websockets
 
@@ -47,6 +49,34 @@ logger = logging.getLogger("nexus-gateway")
 clients: Set[websockets.WebSocketServerProtocol] = set()
 connection_tracker: Dict[str, list] = defaultdict(list)  # IP -> [timestamps]
 message_tracker: Dict[int, list] = defaultdict(list)  # connection_id -> [timestamps]
+telegram_bridge: Optional[TelegramBridge] = None
+
+
+async def broadcast_json(payload, exclude: Optional[websockets.WebSocketServerProtocol] = None):
+    """Broadcast a payload to all connected clients except *exclude*."""
+    if not clients:
+        return
+    disconnected = set()
+    message = payload if isinstance(payload, str) else json.dumps(payload)
+    task_client_pairs = []
+    for client in clients:
+        if client != exclude and client.open:
+            task = asyncio.create_task(client.send(message))
+            task_client_pairs.append((task, client))
+
+    if not task_client_pairs:
+        return
+
+    tasks = [pair[0] for pair in task_client_pairs]
+    results = await asyncio.gather(*tasks, return_exceptions=True)
+    for i, result in enumerate(results):
+        if isinstance(result, Exception):
+            target_client = task_client_pairs[i][1]
+            logger.error(f"Failed to send to client {target_client.remote_address}: {result}")
+            disconnected.add(target_client)
+
+    if disconnected:
+        clients.difference_update(disconnected)
 
 def check_rate_limit(ip: str) -> bool:
     """Check if IP has exceeded connection rate limit."""
@@ -215,6 +245,31 @@ async def pty_handler(websocket: websockets.WebSocketServerProtocol):
         logger.info(f"[PTY] Shell session ended for {addr}")
 
 
+async def telegram_bridge_loop() -> None:
+    """Poll Telegram and rebroadcast inbound chat into the Nexus websocket fabric."""
+    if telegram_bridge is None:
+        return
+
+    last_update_id = 0
+    logger.info("Telegram bridge polling started")
+    while True:
+        try:
+            last_update_id, messages = await telegram_bridge.poll_once(last_update_id)
+            for msg in messages:
+                await broadcast_json({
+                    "type": "chat",
+                    "text": msg["text"],
+                    "agent": msg["sender"],
+                    "source": "telegram",
+                    "timestamp": msg.get("timestamp"),
+                })
+        except asyncio.CancelledError:
+            raise
+        except Exception as e:
+            logger.error(f"Telegram bridge polling error: {e}")
+            await asyncio.sleep(1.0)
+
+
 async def broadcast_handler(websocket: websockets.WebSocketServerProtocol):
     """Handles individual client connections and message broadcasting."""
     addr = websocket.remote_address
@@ -245,46 +300,33 @@ async def broadcast_handler(websocket: websockets.WebSocketServerProtocol):
                     "message": "Message rate limit exceeded"
                 }))
                 continue
-            
+
+            data = None
+            msg_type = None
             # Parse for logging/validation if it's JSON
             try:
                 data = json.loads(message)
                 msg_type = data.get("type", "unknown")
                 # Optional: log specific important message types
-                if msg_type in ["agent_register", "thought", "action"]:
+                if msg_type in ["agent_register", "thought", "action", "chat"]:
                     logger.debug(f"Received {msg_type} from {addr}")
                 # Handle git status requests from the operator cockpit (issue #1695)
                 if msg_type == "git_status_request":
                     git_info = _get_git_status()
                     await websocket.send(json.dumps(git_info))
                     continue
+                if msg_type == "chat" and telegram_bridge and data.get("source") != "telegram":
+                    text = str(data.get("text", "")).strip()
+                    if text:
+                        sender = data.get("agent") or data.get("user") or "Nexus"
+                        await telegram_bridge.send_chat(text, sender=str(sender))
             except (json.JSONDecodeError, TypeError):
-                pass
+                data = None
+                msg_type = None
 
             # Broadcast to all OTHER clients
-            if not clients:
-                continue
-                
-            disconnected = set()
-            # Create broadcast tasks, tracking which client each task targets
-            task_client_pairs = []
-            for client in clients:
-                if client != websocket and client.open:
-                    task = asyncio.create_task(client.send(message))
-                    task_client_pairs.append((task, client))
+            await broadcast_json(data if data is not None else message, exclude=websocket)
 
-            if task_client_pairs:
-                tasks = [pair[0] for pair in task_client_pairs]
-                results = await asyncio.gather(*tasks, return_exceptions=True)
-                for i, result in enumerate(results):
-                    if isinstance(result, Exception):
-                        target_client = task_client_pairs[i][1]
-                        logger.error(f"Failed to send to client {target_client.remote_address}: {result}")
-                        disconnected.add(target_client)
-            
-            if disconnected:
-                clients.difference_update(disconnected)
-                
     except websockets.exceptions.ConnectionClosed:
         logger.debug(f"Connection closed by client {addr}")
     except Exception as e:
@@ -295,6 +337,8 @@ async def broadcast_handler(websocket: websockets.WebSocketServerProtocol):
 
 async def main():
     """Main server loop with graceful shutdown."""
+    global telegram_bridge
+
     # Log security configuration
     if AUTH_TOKEN:
         logger.info("Authentication: ENABLED (token required)")
@@ -314,6 +358,15 @@ async def main():
     # Set up signal handlers for graceful shutdown
     loop = asyncio.get_running_loop()
     stop = loop.create_future()
+    telegram_task = None
+
+    bridge_config = config_from_env(os.environ)
+    if bridge_config:
+        telegram_bridge = TelegramBridge(bridge_config, logger=logger)
+        telegram_task = asyncio.create_task(telegram_bridge_loop())
+        logger.info(f"Telegram bridge enabled for chat {bridge_config.chat_id}")
+    else:
+        logger.info("Telegram bridge disabled — set NEXUS_TELEGRAM_BOT_TOKEN/NEXUS_TELEGRAM_CHAT_ID to enable")
     
     def shutdown():
         if not stop.done():
@@ -332,6 +385,11 @@ async def main():
         async with websockets.serve(pty_handler, "127.0.0.1", PTY_PORT):
             logger.info(f"PTY shell gateway listening on ws://127.0.0.1:{PTY_PORT}/pty")
             await stop
+
+    if telegram_task:
+        telegram_task.cancel()
+        await asyncio.gather(telegram_task, return_exceptions=True)
+        telegram_bridge = None
         
     logger.info("Shutting down Nexus WS gateway...")
     # Close any remaining client connections (handlers may have already cleaned up)

tests/test_nexus_chat_gateway_wiring.py

@@ -0,0 +1,12 @@
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parent.parent
+APP_JS = ROOT / "app.js"
+
+
+def test_send_chat_message_uses_gateway_not_mock_replies():
+    source = APP_JS.read_text(encoding="utf-8")
+    assert "Processing your request through the harness..." not in source
+    assert "Message not sent. Nexus gateway offline." in source
+    assert "hermesWs.send(JSON.stringify({" in source
+    assert "source: 'nexus_chat'" in source

tests/test_nexus_telegram_bridge.py

@@ -0,0 +1,97 @@
+from importlib.util import module_from_spec, spec_from_file_location
+from pathlib import Path
+import asyncio
+
+ROOT = Path(__file__).resolve().parent.parent
+MODULE_PATH = ROOT / "nexus" / "telegram_bridge.py"
+
+
+def load_module():
+    spec = spec_from_file_location("nexus_telegram_bridge", MODULE_PATH)
+    module = module_from_spec(spec)
+    assert spec.loader is not None
+    spec.loader.exec_module(module)
+    return module
+
+
+def test_config_from_env_prefers_nexus_specific_values():
+    module = load_module()
+    cfg = module.config_from_env({
+        "NEXUS_TELEGRAM_BOT_TOKEN": "bridge-token",
+        "NEXUS_TELEGRAM_CHAT_ID": "-100123",
+        "TELEGRAM_BOT_TOKEN": "shared-token",
+        "TELEGRAM_HOME_CHANNEL": "-100999",
+    })
+    assert cfg.bot_token == "bridge-token"
+    assert cfg.chat_id == "-100123"
+
+
+def test_extract_update_message_filters_wrong_chat_and_formats_sender():
+    module = load_module()
+    update = {
+        "update_id": 7,
+        "message": {
+            "chat": {"id": -100123},
+            "from": {"first_name": "Alex", "username": "alex"},
+            "text": "hello from telegram",
+            "date": 1710000000,
+        },
+    }
+    msg = module.extract_update_message(update, "-100123")
+    assert msg["sender"] == "Alex"
+    assert msg["text"] == "hello from telegram"
+    assert module.extract_update_message(update, "-100999") is None
+
+
+def test_poll_once_normalizes_updates_and_advances_offset():
+    module = load_module()
+    cfg = module.TelegramBridgeConfig(bot_token="token", chat_id="-100123", poll_timeout=1)
+
+    async def run_test():
+        bridge = module.TelegramBridge(
+            cfg,
+            get_json=lambda url: {
+                "ok": True,
+                "result": [
+                    {
+                        "update_id": 11,
+                        "message": {
+                            "chat": {"id": -100123},
+                            "from": {"username": "timmy-time"},
+                            "text": "nexus ping",
+                            "date": 1710000001,
+                        },
+                    }
+                ],
+            },
+            post_json=lambda url, payload: {"ok": True},
+        )
+        last_id, messages = await bridge.poll_once(0)
+        assert last_id == 11
+        assert messages == [{
+            "update_id": 11,
+            "sender": "timmy-time",
+            "text": "nexus ping",
+            "timestamp": 1710000001,
+            "source": "telegram",
+        }]
+
+    asyncio.run(run_test())
+
+
+def test_send_chat_formats_sender_prefix():
+    module = load_module()
+    sent = {}
+    cfg = module.TelegramBridgeConfig(bot_token="token", chat_id="-100123")
+
+    async def run_test():
+        bridge = module.TelegramBridge(
+            cfg,
+            get_json=lambda url: {"ok": True, "result": []},
+            post_json=lambda url, payload: sent.setdefault("payload", payload) or {"ok": True},
+        )
+        await bridge.send_chat("hello nexus", sender="Nexus")
+
+    asyncio.run(run_test())
+    assert sent["payload"]["chat_id"] == "-100123"
+    assert sent["payload"]["text"] == "[Nexus] hello nexus"