Add names to relay bridge messages

main.py

@@ -12,8 +12,27 @@ from asyncio_mqtt import Client
 
 import settings
 
+
+STORAGE_FILE = 'data/data.json'
+storage = dict(nodes={})
+def save_data():
+    with open(STORAGE_FILE, 'w') as f:
+        json.dump(storage, f, sort_keys=True, indent=4)
+try:
+    storage = json.load(open(STORAGE_FILE))
+except FileNotFoundError:
+    save_data()
+
+
 bot = TelegramClient('data/bot', settings.API_ID, settings.API_HASH).start(bot_token=settings.API_TOKEN)
 
+def int_to_mesh_id(num):
+    # converts signed 32-bit ints to unsigned hex meshtastic IDs
+    # example: -697240346 to !d670f4e6
+
+    hex_str = hex(num & 0xFFFFFFFF)
+    return '!' + hex_str[2:]
+
 async def process_text(data):
     msg_to = data.get('to', None)
 
@@ -23,12 +42,40 @@ async def process_text(data):
 
     try:
         msg_text = data['payload']['text']
+        sender = data['from']
     except KeyError:
         logging.info('Invalid payload: %s', str(data))
         return
 
-    logging.info('Channel message: %s', msg_text)
-    await bot.send_message(settings.CHAT_ID, msg_text)
+    sender_id = int_to_mesh_id(sender)
+
+    try:
+        from_name = storage['nodes'][sender_id]['long_name']
+    except KeyError:
+        from_name = 'Unknown sender'
+
+    logging.info('Channel message from %s: %s', from_name, msg_text)
+
+    msg = from_name + ': ' + msg_text
+    await bot.send_message(settings.CHAT_ID, msg)
+
+async def process_info(data):
+    try:
+        node_id = data['payload']['id']
+        long_name = data['payload']['longname']
+        short_name = data['payload']['shortname']
+    except KeyError:
+        logging.info('Invalid payload: %s', str(data))
+        return
+
+    logging.info('Node %s info: %s (%s)', node_id, long_name, short_name)
+
+    storage['nodes'][node_id] = dict(
+        node_id=node_id,
+        long_name=long_name,
+        short_name=short_name,
+    )
+    save_data()
 
 
 async def process_mqtt(message):
@@ -55,6 +102,8 @@ async def process_mqtt(message):
 
     if msg_type == 'text':
         await process_text(data)
+    if msg_type == 'nodeinfo':
+        await process_info(data)
     else:
         logging.debug('Ignored message type %s: %s', msg_type, text)
         return
@@ -67,4 +116,5 @@ async def fetch_mqtt():
                 await process_mqtt(message)
 
 with bot:
-    bot.loop.run_until_complete(fetch_mqtt())
+    bot.loop.create_task(fetch_mqtt())
+    bot.run_until_disconnected()