feat: improve exit game event on connection close

main.py

@@ -24,39 +24,46 @@ async def enter_game(game_id, player_web_socket):
     """ TODO fix asssumption that there will only be two players per game """
     # if game does not exist, create it
     if game_id not in GAMES:
-        GAMES[game_id] = {'players': [player_web_socket], 'game_id': game_id}
+        GAMES[game_id] = {"players": [player_web_socket], "game_id": game_id}
         message = wait_for_opponent_response()
         await player_web_socket.send(message)
     # if game exists, add player to game if they are not already in it    
-    elif player_web_socket.remote_address[0] not in map(lambda p: p.remote_address[0], GAMES[game_id]['players']):
-        GAMES[game_id]['players'].append(player_web_socket)
+    elif player_web_socket.remote_address[0] not in map(lambda p: p.remote_address[0], GAMES[game_id]["players"]):
+        GAMES[game_id]["players"].append(player_web_socket)
         message = start_game_response()
-        await asyncio.wait([player.send(message) for player in GAMES[game_id]['players']])
+        await asyncio.wait([player.send(message) for player in GAMES[game_id]["players"]])
     else:
         print("Already in game...")
 
-async def exit_game(game_id):
-    players = GAMES[game_id]['players']
-    del GAMES[game_id]
-    message = exit_game_response()
-    await asyncio.wait([player.send(message) for player in players])
+async def exit_game(player_remote_address):
+    # get game with player that is disconnecting
+    result = list(filter(lambda g: player_remote_address in map(lambda p: p.remote_address[0], g["players"]), GAMES.values()))
+
+    # if game exists, delete game and remove opponent player from game
+    if len(result):
+        game_with_player = result[0]
+        del GAMES[game_with_player["game_id"]]
+
+        # remove opponent player from game
+        result = list(filter(lambda p: p.remote_address[0] != player_remote_address, game_with_player["players"]))
+        if len(result):
+            opponent_player = result[0]
+            message = exit_game_response()
+            await opponent_player.send(message)
 
 # --------------------------
 
 async def init(websocket, path):
-    data = ""
     try:
         async for message in websocket:
-            print(websocket.remote_address)
             data = json.loads(message)
             if data["action"] == "enter_game":
                 await enter_game(data["gameId"], websocket)
             else:
                 print("Unsupported action...")
     finally:
-        if data and "gameId" in data:
-            print("Exiting game...")
-            await exit_game(data["gameId"])
+        print("Exiting game...")
+        await exit_game(websocket.remote_address[0])
         print("Connection closed...")
 
 start_server = websockets.serve(init, "", 5001)