Merge PR #1325: add message deduplication to WhatsApp channel

nanobot/channels/whatsapp.py

@@ -2,6 +2,7 @@
 
 import asyncio
 import json
+from collections import OrderedDict
 from typing import Any
 
 from loguru import logger
@@ -27,6 +28,7 @@ class WhatsAppChannel(BaseChannel):
         self.config: WhatsAppConfig = config
         self._ws = None
         self._connected = False
+        self._processed_message_ids: OrderedDict[str, None] = OrderedDict()
     
     async def start(self) -> None:
         """Start the WhatsApp channel by connecting to the bridge."""
@@ -108,6 +110,14 @@ class WhatsAppChannel(BaseChannel):
             # New LID sytle typically:
             sender = data.get("sender", "")
             content = data.get("content", "")
+            message_id = data.get("id", "")
+
+            if message_id:
+                if message_id in self._processed_message_ids:
+                    return
+                self._processed_message_ids[message_id] = None
+                while len(self._processed_message_ids) > 1000:
+                    self._processed_message_ids.popitem(last=False)
 
             # Extract just the phone number or lid as chat_id
             user_id = pn if pn else sender
@@ -124,7 +134,7 @@ class WhatsAppChannel(BaseChannel):
                 chat_id=sender,  # Use full LID for replies
                 content=content,
                 metadata={
-                    "message_id": data.get("id"),
+                    "message_id": message_id,
                     "timestamp": data.get("timestamp"),
                     "is_group": data.get("isGroup", False)
                 }