✨ Promote some other UNO bots in /start, /help and on game end

game_manager.py

@@ -24,7 +24,7 @@
 from player import Player
 from errors import (AlreadyJoinedError, LobbyClosedError, NoGameInChatError,
                     NotEnoughPlayersError)
-
+from promotions import send_promotion_async
 
 class GameManager(object):
     """ Manages all running games by using a confusing amount of dicts """
@@ -143,6 +143,7 @@ def end_game(self, chat, user):
         """
 
         self.logger.info("Game in chat " + str(chat.id) + " ended")
+        send_promotion_async(chat, chance=0.15)
 
         # Find the correct game instance to end
         player = self.player_for_user_in_chat(user, chat)

promotions.py

@@ -0,0 +1,34 @@
+"""
+Promote other UNO bots
+"""
+import random
+
+
+# Promotion messages and their weights
+PROMOTIONS = {
+    """
+For a more modern UNO experience, <a href="https://t.me/uno9bot/uno">try out</a> the new <a href="https://t.me/uno9bot?start=ref-unobot">@uno9bot</a>.
+""": 2.0,
+    """
+Also check out @UnoDemoBot, a newer version of this bot with exclusive modes and features!
+""": 1.0,
+}
+
+def get_promotion():
+    """ Get a random promotion message """
+    return random.choices(list(PROMOTIONS.keys()), weights=list(PROMOTIONS.values()))[0]
+
+def send_promotion(chat, chance=1.0):
+    """ (Maybe) send a promotion message """
+    if random.random() <= chance:
+        chat.send_message(get_promotion(), parse_mode='HTML')
+
+
+def send_promotion_async(chat, chance=1.0):
+    """ Send a promotion message asynchronously """
+
+    from utils import dispatcher, error
+    try:
+        dispatcher.run_async(send_promotion, chat, chance=chance)
+    except Exception as e:
+        error(None, None, e)

simple_commands.py

@@ -24,6 +24,7 @@
 from utils import send_async
 from shared_vars import dispatcher
 from internationalization import _, user_locale
+from promotions import send_promotion
 
 @user_locale
 def help_handler(update: Update, context: CallbackContext):
@@ -64,8 +65,15 @@ def help_handler(update: Update, context: CallbackContext):
       "<a href=\"https://telegram.me/unobotnews\">update channel</a>"
       " and buy an UNO card game.")
 
-    send_async(context.bot, update.message.chat_id, text=help_text,
-               parse_mode=ParseMode.HTML, disable_web_page_preview=True)
+    def _send():
+      update.message.chat.send_message(
+          help_text,
+          parse_mode=ParseMode.HTML,
+          disable_web_page_preview=True,
+      )
+      send_promotion(update.effective_chat)
+
+    context.dispatcher.run_async(_send)
 
 @user_locale
 def modes(update: Update, context: CallbackContext):