Change contract for commands to return full event

examples/serial_chat.py

@@ -17,7 +17,9 @@ async def handle_message(event):
     data = event.payload
 
     contact = mc.get_contact_by_key_prefix(data['pubkey_prefix'])
-
+    if contact is None:
+        print(f"Unknown contact with pubkey prefix: {data['pubkey_prefix']}")
+        return
     print(f"{contact['adv_name']}: {data['text']}")
 
 async def main () :
@@ -54,7 +56,7 @@ async def main () :
             if line.startswith("to ") :
                 dest = line[3:]
                 nc = mc.get_contact_by_name(dest)
-                if mc is None:
+                if nc is None:
                     print(f"Contact '{DEST}' not found in contacts.")
                     return
                 else :
@@ -72,8 +74,12 @@ async def main () :
             else :
                 if line.startswith("send") :
                     line = line[5:]
-                ret = await mc.commands.send_msg(contact , line)
-                exp_ack = ret["expected_ack"].hex()
+                result = await mc.commands.send_msg(contact, line)
+                if result.type == EventType.ERROR:
+                    print(f"⚠️ Failed to send message: {result.payload}")
+                    continue
+                    
+                exp_ack = result.payload["expected_ack"].hex()
                 print(" Sent ... ", end="", flush=True)
                 res = await mc.wait_for_event(EventType.ACK, attribute_filters={"code": exp_ack}, timeout=5)
                 if res is None :
@@ -82,7 +88,7 @@ async def main () :
                     print ("Ack")
             
     except KeyboardInterrupt:
-        meshcore.stop()
+        mc.stop()
         print("\nExiting...")
     except asyncio.CancelledError:
         # Handle task cancellation from KeyboardInterrupt in asyncio.run()