poprawkiA

app.py

@@ -3,7 +3,7 @@ import secrets
 import time
 import mimetypes
 from datetime import datetime, timedelta
-from flask import Flask, render_template, redirect, url_for, request, flash, Blueprint, send_from_directory, request, abort
+from flask import Flask, render_template, redirect, url_for, request, flash, Blueprint, send_from_directory, request, abort, session
 from markupsafe import Markup
 from flask_sqlalchemy import SQLAlchemy
 from flask_login import LoginManager, UserMixin, login_user, login_required, logout_user, current_user
@@ -832,18 +832,31 @@ def handle_edit_item(data):
             'new_quantity': item.quantity
         }, to=str(item.list_id))
 
-
 @socketio.on('join_list')
 def handle_join(data):
     room = str(data['room'])
     username = data.get('username', 'Gość')
     join_room(room)
+
+    if room not in active_users:
+        active_users[room] = set()
+    active_users[room].add(username)
+
     shopping_list = ShoppingList.query.get(int(data['room']))
     list_title = shopping_list.title if shopping_list else "Twoja lista"
 
     emit('user_joined', {'username': username}, to=room)
+    emit('user_list', {'users': list(active_users[room])}, to=room)
     emit('joined_confirmation', {'room': room, 'list_title': list_title})
 
+@socketio.on('disconnect')
+def handle_disconnect():
+    for room, users in active_users.items():
+        if current_user.username in users:
+            users.remove(current_user.username)
+            emit('user_left', {'username': current_user.username}, to=room)
+            emit('user_list', {'users': list(users)}, to=room)
+
 @socketio.on('add_item')
 def handle_add_item(data):
     list_id = data['list_id']