feat: Add websocket command to search for products by barcode.

V2.1.0   themes

README.md

@@ -1,33 +1,98 @@
-## 1. Installation (HACS)
+# Shopping List Manager Integration for Home Assistant
 
-### Recommended
+The backend integration that powers the Shopping List Manager. Provides persistent multi-list storage, a 500+ product catalog, real-time WebSocket events, and a full API for the Lovelace card — all running natively inside Home Assistant.
+
+> **Pair with the [Shopping List Manager Card](https://github.com/thekiwismarthome/shopping-list-manager-card)** for the full UI experience.
 
 [![Open your Home Assistant instance and open this repository inside the Home Assistant Community Store.](https://my.home-assistant.io/badges/hacs_repository.svg)](https://my.home-assistant.io/redirect/hacs_repository/?owner=thekiwismarthome&repository=shopping-list-manager&category=integration)
 
-1. Click the button above.
+---
-2. Confirm adding the repository to HACS.
+
-3. Install **Shopping List Manager** from **HACS → Integrations**.
+## Features
-4. Restart Home Assistant.
+
+### 🛒 Multi-List Management
+- Create and manage multiple shopping lists
+- Private or shared lists with per-member access control
+- Active list state shared across all connected devices and users
+- List total price calculation
+
+### 📦 Items
+- Add, update, check, and delete items with quantity and unit
+- Atomic quantity increment / decrement
+- Bulk check and clear checked items
+- Per-item pricing, notes, and category assignment
+
+### 🔍 Product Catalog
+- **500+ products** (NZ-focused, extensible to AU, US, GB, CA)
+- Fuzzy search with alias matching
+- Recently-used product suggestions
+- Custom product creation
+- Allergen filtering and product substitute groups
+- Product images (WebP, 200×200px, optimised)
+
+### 🗂️ Categories
+- 13 default categories — Produce, Dairy, Meat, Bakery, Pantry, Frozen, Beverages, Snacks, Household, Health, Pet, Baby, Other
+- Category colour coding and emoji icons
+- Per-list category ordering
+
+### 💳 Loyalty Cards
+- Store loyalty and rewards card data
+- Private or shared card access per user
+
+### 🔄 Real-Time Events
+- All changes fire events on the Home Assistant bus
+- Custom WebSocket subscription proxy so **non-admin users** receive live updates without requiring HA admin privileges
 
 ---
 
-### Manual Repository URL
+## Requirements
 
-https://github.com/thekiwismarthome/shopping-list-manager
+| Component | Minimum Version |
-
+|---|---|
-Repository type: **Integration**
+| Home Assistant | 2024.1 |
+| HACS | 2.x |
 
 ---
 
-## 2. Manual Installation (Optional)
+## Installation
 
-1. Copy the folder:
+### Via HACS (Recommended)
-custom_components/shopping_list_manager
 
-2. Paste it into:
+[![Open your Home Assistant instance and open this repository inside the Home Assistant Community Store.](https://my.home-assistant.io/badges/hacs_repository.svg)](https://my.home-assistant.io/redirect/hacs_repository/?owner=thekiwismarthome&repository=shopping-list-manager&category=integration)
-/config/custom_components/
 
-3. Restart Home Assistant.
+1. Click the button above
+2. Confirm adding the repository to HACS
+3. Install **Shopping List Manager** from **HACS → Integrations**
+4. Restart Home Assistant
+5. Go to **Settings → Devices & Services → Add Integration** and search for **Shopping List Manager**
+
+### Manual Installation
+
+1. Copy the `custom_components/shopping_list_manager/` folder into your HA `/config/custom_components/` directory
+2. Restart Home Assistant
+3. Go to **Settings → Devices & Services → Add Integration** and search for **Shopping List Manager**
+
+---
+
+## Lovelace Card
+
+Install the companion card to get the full shopping UI:
 
-## 3. Shopping List Card to go with this Integration
 [![Open your Home Assistant instance and open this repository inside the Home Assistant Community Store.](https://my.home-assistant.io/badges/hacs_repository.svg)](https://my.home-assistant.io/redirect/hacs_repository/?owner=thekiwismarthome&repository=shopping-list-manager-card&category=plugin)
+
+---
+
+## Documentation
+
+Full documentation is available in the [Wiki](https://github.com/thekiwismarthome/shopping-list-manager/wiki).
+
+## Support & Feedback
+
+- [Open an Issue](https://github.com/thekiwismarthome/shopping-list-manager/issues)
+- [Home Assistant Community Forum](https://community.home-assistant.io)
+
+---
+
+## License
+
+MIT — see [LICENSE](LICENSE) for details.

custom_components/shopping_list_manager/__init__.py

@@ -2,11 +2,12 @@
 import logging
 import os
 
+from pathlib import Path
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.typing import ConfigType
 
-from .const import DOMAIN
+from .const import DOMAIN, EVENT_ITEM_ADDED, EVENT_ITEM_UPDATED, EVENT_ITEM_CHECKED, EVENT_ITEM_DELETED, EVENT_LIST_UPDATED, EVENT_LIST_DELETED
 from .storage import ShoppingListStorage
 from .utils.images import ImageHandler
 
@@ -23,7 +24,6 @@ async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
     return True
 
 
-# In async_setup_entry function, after storage initialization:
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     """Set up Shopping List Manager from a config entry."""
     _LOGGER.info("Setting up Shopping List Manager")
@@ -58,7 +58,21 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     # Register frontend resources
     await _async_register_frontend(hass)
     
-    _LOGGER.info("Shopping List Manager setup complete")
+    # CRITICAL: Register event listeners so non-admin users can subscribe
+    # Without these, non-admin users cannot receive real-time updates
+    def _dummy_listener(event):
+        """Dummy listener to enable event subscription for all users."""
+        pass
+    
+    hass.bus.async_listen(EVENT_ITEM_ADDED, _dummy_listener)
+    hass.bus.async_listen(EVENT_ITEM_UPDATED, _dummy_listener)
+    hass.bus.async_listen(EVENT_ITEM_CHECKED, _dummy_listener)
+    hass.bus.async_listen(EVENT_ITEM_DELETED, _dummy_listener)
+    hass.bus.async_listen(EVENT_LIST_UPDATED, _dummy_listener)
+    hass.bus.async_listen(EVENT_LIST_DELETED, _dummy_listener)
+    
+    _LOGGER.info("Shopping List Manager setup complete with event subscriptions enabled")
+    
     return True
 
 
@@ -88,6 +102,10 @@ async def _async_register_websocket_handlers(
     from .websocket import handlers
     
     # Lists handlers
+    websocket_api.async_register_command(
+        hass,
+        handlers.websocket_subscribe,
+    )
     websocket_api.async_register_command(
         hass,
         handlers.websocket_get_lists,
@@ -126,6 +144,11 @@ async def _async_register_websocket_handlers(
         hass,
         handlers.websocket_check_item,
     )
+    websocket_api.async_register_command(
+        hass,
+        handlers.websocket_increment_item,
+    )
+
     websocket_api.async_register_command(
         hass,
         handlers.websocket_delete_item,
@@ -148,10 +171,19 @@ async def _async_register_websocket_handlers(
     )
     
     # Products handlers
+    websocket_api.async_register_command(
+        hass,
+        handlers.websocket_search_by_barcode,
+    )
     websocket_api.async_register_command(
         hass,
         handlers.websocket_search_products,
     )
+    websocket_api.async_register_command(
+        hass,
+        handlers.ws_get_products_by_ids,
+    )
+
     websocket_api.async_register_command(
         hass,
         handlers.websocket_get_product_suggestions,
@@ -174,7 +206,61 @@ async def _async_register_websocket_handlers(
         hass,
         handlers.websocket_get_categories,
     )
-    
+
+    # Integration settings handlers
+    websocket_api.async_register_command(
+        hass,
+        handlers.websocket_get_integration_settings,
+    )
+    websocket_api.async_register_command(
+        hass,
+        handlers.websocket_set_country,
+    )
+
+    # Backup / Restore handlers
+    websocket_api.async_register_command(
+        hass,
+        handlers.websocket_export_data,
+    )
+    websocket_api.async_register_command(
+        hass,
+        handlers.websocket_import_data,
+    )
+
+    # List members handler
+    websocket_api.async_register_command(
+        hass,
+        handlers.websocket_update_list_members,
+    )
+
+    # HA users handler
+    websocket_api.async_register_command(
+        hass,
+        handlers.websocket_get_ha_users,
+    )
+
+    # Loyalty card handlers
+    websocket_api.async_register_command(
+        hass,
+        handlers.websocket_get_loyalty_cards,
+    )
+    websocket_api.async_register_command(
+        hass,
+        handlers.websocket_add_loyalty_card,
+    )
+    websocket_api.async_register_command(
+        hass,
+        handlers.websocket_update_loyalty_card,
+    )
+    websocket_api.async_register_command(
+        hass,
+        handlers.websocket_delete_loyalty_card,
+    )
+    websocket_api.async_register_command(
+        hass,
+        handlers.websocket_update_loyalty_card_members,
+    )
+
     _LOGGER.debug("WebSocket handlers registered")
 
 
@@ -183,8 +269,6 @@ async def _async_register_frontend(hass: HomeAssistant) -> None:
     # Since frontend is a separate HACS module, we don't need to register it here
     # The frontend card registers itself independently
     _LOGGER.debug("Frontend resources skipped (separate HACS module)")
-    
-    _LOGGER.debug("Frontend resources registered")
 
 
 def get_storage(hass: HomeAssistant) -> ShoppingListStorage:
@@ -192,4 +276,4 @@ def get_storage(hass: HomeAssistant) -> ShoppingListStorage:
     
     Helper function for WebSocket handlers to access storage.
     """
-    return hass.data[DOMAIN][DATA_STORAGE]
+    return hass.data[DOMAIN][DATA_STORAGE]

custom_components/shopping_list_manager/const.py

@@ -9,6 +9,7 @@ STORAGE_KEY_LISTS = f"{DOMAIN}.lists"
 STORAGE_KEY_ITEMS = f"{DOMAIN}.items"
 STORAGE_KEY_PRODUCTS = f"{DOMAIN}.products"
 STORAGE_KEY_CATEGORIES = f"{DOMAIN}.categories"
+STORAGE_KEY_LOYALTY_CARDS = f"{DOMAIN}.loyalty_cards"
 
 # WebSocket Commands - Lists
 WS_TYPE_LISTS_GET_ALL = f"{DOMAIN}/lists/get_all"
@@ -16,6 +17,10 @@ WS_TYPE_LISTS_CREATE = f"{DOMAIN}/lists/create"
 WS_TYPE_LISTS_UPDATE = f"{DOMAIN}/lists/update"
 WS_TYPE_LISTS_DELETE = f"{DOMAIN}/lists/delete"
 WS_TYPE_LISTS_SET_ACTIVE = f"{DOMAIN}/lists/set_active"
+WS_TYPE_LISTS_UPDATE_MEMBERS = f"{DOMAIN}/lists/update_members"
+
+# WebSocket Commands - Users
+WS_TYPE_USERS_GET_ALL = f"{DOMAIN}/users/get_all"
 
 # WebSocket Commands - Items
 WS_TYPE_ITEMS_GET = f"{DOMAIN}/items/get"
@@ -39,6 +44,13 @@ WS_TYPE_PRODUCTS_DELETE = f"{DOMAIN}/products/delete"
 WS_TYPE_CATEGORIES_GET_ALL = f"{DOMAIN}/categories/get_all"
 WS_TYPE_CATEGORIES_REORDER = f"{DOMAIN}/categories/reorder"
 
+# WebSocket Commands - Loyalty Cards
+WS_TYPE_LOYALTY_GET_ALL = f"{DOMAIN}/loyalty/get_all"
+WS_TYPE_LOYALTY_ADD = f"{DOMAIN}/loyalty/add"
+WS_TYPE_LOYALTY_UPDATE = f"{DOMAIN}/loyalty/update"
+WS_TYPE_LOYALTY_DELETE = f"{DOMAIN}/loyalty/delete"
+WS_TYPE_LOYALTY_UPDATE_MEMBERS = f"{DOMAIN}/loyalty/update_members"
+
 # WebSocket Commands - Subscriptions
 WS_TYPE_SUBSCRIBE = f"{DOMAIN}/subscribe"
 WS_TYPE_UNSUBSCRIBE = f"{DOMAIN}/unsubscribe"

custom_components/shopping_list_manager/data/categories.json

@@ -78,7 +78,7 @@
         "id": "health",
         "name": "Health & Beauty",
         "icon": "mdi:heart-pulse",
-        "color": "#E91E63",
+        "color": "#009688",
         "sort_order": 10,
         "system": true
     },
@@ -94,7 +94,7 @@
         "id": "baby",
         "name": "Baby",
         "icon": "mdi:baby-face",
-        "color": "#FFEB3B",
+        "color": "#F48FB1",
         "sort_order": 12,
         "system": true
     },

custom_components/shopping_list_manager/models.py

@@ -96,6 +96,28 @@ class Item:
             self.estimated_total = self.quantity * self.price
 
 
+@dataclass
+class LoyaltyCard:
+    """Loyalty card model."""
+    id: str
+    name: str
+    number: str
+    barcode: str = ""
+    barcode_type: str = "barcode"  # "barcode" or "qrcode"
+    logo: str = ""
+    notes: str = ""
+    color: str = "#9fa8da"
+    created_at: str = field(default_factory=current_timestamp)
+    updated_at: str = field(default_factory=current_timestamp)
+    # Ownership: None = visible to all users; set = private to owner + allowed_users
+    owner_id: Optional[str] = None
+    allowed_users: List[str] = field(default_factory=list)
+
+    def to_dict(self) -> Dict[str, Any]:
+        """Convert to dictionary."""
+        return asdict(self)
+
+
 @dataclass
 class ShoppingList:
     """Shopping list model."""
@@ -107,6 +129,9 @@ class ShoppingList:
     item_order: List[str] = field(default_factory=list)
     category_order: List[str] = field(default_factory=list)
     active: bool = False
+    # Ownership: None = visible to all users; set = private to owner + allowed_users
+    owner_id: Optional[str] = None
+    allowed_users: List[str] = field(default_factory=list)
     
     def to_dict(self) -> Dict[str, Any]:
         """Convert to dictionary."""

custom_components/shopping_list_manager/storage.py

@@ -1,5 +1,8 @@
 """Storage management for Shopping List Manager."""
+import json
 import logging
+import os
+from datetime import datetime, timezone
 from typing import Dict, List, Optional, Any
 from .utils.search import ProductSearch
 from homeassistant.core import HomeAssistant
@@ -11,9 +14,10 @@ from .const import (
     STORAGE_KEY_ITEMS,
     STORAGE_KEY_PRODUCTS,
     STORAGE_KEY_CATEGORIES,
+    STORAGE_KEY_LOYALTY_CARDS,
 )
 from .data.catalog_loader import load_product_catalog
-from .models import ShoppingList, Item, Product, Category, generate_id
+from .models import ShoppingList, Item, Product, Category, LoyaltyCard, generate_id
 from .data.category_loader import load_categories
 
 _LOGGER = logging.getLogger(__name__)
@@ -37,11 +41,13 @@ class ShoppingListStorage:
         self._store_items = Store(hass, STORAGE_VERSION, STORAGE_KEY_ITEMS)
         self._store_products = Store(hass, STORAGE_VERSION, STORAGE_KEY_PRODUCTS)
         self._store_categories = Store(hass, STORAGE_VERSION, STORAGE_KEY_CATEGORIES)
-        
+        self._store_loyalty_cards = Store(hass, STORAGE_VERSION, STORAGE_KEY_LOYALTY_CARDS)
+
         self._lists: Dict[str, ShoppingList] = {}
         self._items: Dict[str, List[Item]] = {}
         self._products: Dict[str, Product] = {}
         self._categories: List[Category] = []
+        self._loyalty_cards: Dict[str, LoyaltyCard] = {}
         self._search_engine: Optional[ProductSearch] = None
     
     async def async_load(self) -> None:
@@ -141,6 +147,15 @@ class ShoppingListStorage:
                 await self._save_products()
                 _LOGGER.info("Successfully imported %d products from catalog", len(self._products))
     
+        # Load loyalty cards
+        loyalty_data = await self._store_loyalty_cards.async_load()
+        if loyalty_data:
+            self._loyalty_cards = {
+                card_id: LoyaltyCard(**card_data)
+                for card_id, card_data in loyalty_data.items()
+            }
+            _LOGGER.debug("Loaded %d loyalty cards", len(self._loyalty_cards))
+
 # Initialize search engine after products are loaded
         if self._products:
             products_dict = {pid: p.to_dict() for pid, p in self._products.items()}
@@ -156,9 +171,21 @@ class ShoppingListStorage:
         data = {list_id: lst.to_dict() for list_id, lst in self._lists.items()}
         await self._store_lists.async_save(data)
     
-    def get_lists(self) -> List[ShoppingList]:
+    def get_lists(self, user_id: str = None, is_admin: bool = False) -> List[ShoppingList]:
-        """Get all lists."""
+        """Get lists visible to the specified user.
-        return list(self._lists.values())
+
+        Global lists (owner_id=None) are visible to everyone.
+        Private lists are visible to their owner, anyone in allowed_users, and admins.
+        """
+        all_lists = list(self._lists.values())
+        if is_admin or user_id is None:
+            return all_lists
+        return [
+            lst for lst in all_lists
+            if lst.owner_id is None
+            or lst.owner_id == user_id
+            or user_id in (lst.allowed_users or [])
+        ]
     
     def get_list(self, list_id: str) -> Optional[ShoppingList]:
         """Get a specific list."""
@@ -171,17 +198,19 @@ class ShoppingListStorage:
                 return lst
         return None
     
-    async def create_list(self, name: str, icon: str = "mdi:cart") -> ShoppingList:
+    async def create_list(self, name: str, icon: str = "mdi:cart", owner_id: str = None) -> ShoppingList:
-        """Create a new list."""
+        """Create a new list. Pass owner_id to make the list private to that user."""
         new_list = ShoppingList(
             id=generate_id(),
             name=name,
             icon=icon,
-            category_order=[cat.id for cat in self._categories]
+            category_order=[cat.id for cat in self._categories],
+            owner_id=owner_id,
         )
         self._lists[new_list.id] = new_list
         self._items[new_list.id] = []
         await self._save_lists()
+        await self._write_config_backup()
         _LOGGER.info("Created new list: %s", name)
         return new_list
     
@@ -202,6 +231,18 @@ class ShoppingListStorage:
         _LOGGER.debug("Updated list: %s", list_id)
         return lst
     
+    async def update_list_members(self, list_id: str, allowed_users: List[str]) -> Optional[ShoppingList]:
+        """Update the allowed_users for a private list."""
+        if list_id not in self._lists:
+            return None
+        lst = self._lists[list_id]
+        lst.allowed_users = allowed_users
+        from .models import current_timestamp
+        lst.updated_at = current_timestamp()
+        await self._save_lists()
+        _LOGGER.debug("Updated members for list: %s", list_id)
+        return lst
+
     async def delete_list(self, list_id: str) -> bool:
         """Delete a list."""
         if list_id not in self._lists:
@@ -460,22 +501,167 @@ class ShoppingListStorage:
         )
         self._products[new_product.id] = new_product
         await self._save_products()
+        await self._write_config_backup()
+        # Rebuild search engine so the new product is immediately searchable
+        products_dict = {pid: p.to_dict() for pid, p in self._products.items()}
+        self._search_engine = ProductSearch(products_dict)
         _LOGGER.debug("Added product: %s", new_product.name)
         return new_product
     
+    async def reload_catalog(self, country_code: str) -> int:
+        """Replace catalog-sourced products with those from a new country's catalog.
+        Products with source='user' are preserved."""
+        catalog_ids = [
+            pid for pid, p in self._products.items()
+            if getattr(p, 'source', 'user') == 'catalog'
+        ]
+        for pid in catalog_ids:
+            del self._products[pid]
+
+        self._country = country_code
+        catalog_products = await load_product_catalog(self._component_path, country_code)
+        count = 0
+        for prod_data in catalog_products:
+            try:
+                product = Product(
+                    id=prod_data.get("id", generate_id()),
+                    name=prod_data["name"],
+                    category_id=prod_data.get("category_id", "other"),
+                    aliases=prod_data.get("aliases", []),
+                    default_unit=prod_data.get("default_unit", "units"),
+                    default_quantity=prod_data.get("default_quantity", 1),
+                    price=prod_data.get("price") or prod_data.get("typical_price"),
+                    currency=self.hass.config.currency,
+                    barcode=prod_data.get("barcode"),
+                    brands=prod_data.get("brands", []),
+                    image_url=prod_data.get("image_url", ""),
+                    custom=False,
+                    source="catalog",
+                    tags=prod_data.get("tags", []),
+                    collections=prod_data.get("collections", []),
+                    taxonomy=prod_data.get("taxonomy", {}),
+                    allergens=prod_data.get("allergens", []),
+                    substitution_group=prod_data.get("substitution_group", ""),
+                    priority_level=prod_data.get("priority_level", 0),
+                    image_hint=prod_data.get("image_hint", "")
+                )
+                self._products[product.id] = product
+                count += 1
+            except Exception as err:
+                _LOGGER.error("Failed to import product %s: %s", prod_data.get("name"), err)
+
+        await self._save_products()
+        products_dict = {pid: p.to_dict() for pid, p in self._products.items()}
+        self._search_engine = ProductSearch(products_dict)
+        _LOGGER.info("Reloaded catalog for %s: %d products imported", country_code, count)
+        return count
+
     async def update_product(self, product_id: str, **kwargs) -> Optional[Product]:
         """Update a product."""
         if product_id not in self._products:
             return None
-        
+
         product = self._products[product_id]
         for key, value in kwargs.items():
             if hasattr(product, key):
                 setattr(product, key, value)
-        
+
         await self._save_products()
+        await self._write_config_backup()
         _LOGGER.debug("Updated product: %s", product_id)
         return product
+
+    # ---------------------------------------------------------------------------
+    # Backup / Restore
+    # ---------------------------------------------------------------------------
+
+    async def export_user_data(self) -> dict:
+        """Return a serialisable snapshot of all user-created data."""
+        user_products = [
+            p.to_dict() for p in self._products.values()
+            if getattr(p, "source", "user") == "user"
+        ]
+        lists = [lst.to_dict() for lst in self._lists.values()]
+        items = {
+            list_id: [item.to_dict() for item in items_list]
+            for list_id, items_list in self._items.items()
+        }
+        return {
+            "slm_backup_version": "1.0",
+            "exported_at": datetime.now(timezone.utc).isoformat(),
+            "country": self._country,
+            "user_products": user_products,
+            "lists": lists,
+            "items": items,
+        }
+
+    async def import_user_data(self, data: dict) -> dict:
+        """Merge a backup into live storage. Skips anything already present by ID."""
+        imported_products = 0
+        imported_lists = 0
+        imported_items = 0
+
+        for prod_data in data.get("user_products", []):
+            prod_id = prod_data.get("id")
+            if prod_id and prod_id not in self._products:
+                try:
+                    self._products[prod_id] = Product(**prod_data)
+                    imported_products += 1
+                except Exception as err:
+                    _LOGGER.warning("Skipped product during import: %s", err)
+
+        if imported_products:
+            await self._save_products()
+            products_dict = {pid: p.to_dict() for pid, p in self._products.items()}
+            self._search_engine = ProductSearch(products_dict)
+
+        for list_data in data.get("lists", []):
+            list_id = list_data.get("id")
+            if list_id and list_id not in self._lists:
+                try:
+                    lst = ShoppingList(**list_data)
+                    lst.active = False
+                    self._lists[list_id] = lst
+                    imported_lists += 1
+                except Exception as err:
+                    _LOGGER.warning("Skipped list during import: %s", err)
+
+        backup_items = data.get("items", {})
+        for list_id, items_list in backup_items.items():
+            if list_id in self._lists and list_id not in self._items:
+                try:
+                    self._items[list_id] = [Item(**d) for d in items_list]
+                    imported_items += len(self._items[list_id])
+                except Exception as err:
+                    _LOGGER.warning("Skipped items for list %s: %s", list_id, err)
+
+        if imported_lists or imported_items:
+            await self._save_lists()
+            await self._save_items()
+
+        _LOGGER.info(
+            "Import complete: %d products, %d lists, %d items",
+            imported_products, imported_lists, imported_items,
+        )
+        return {"products": imported_products, "lists": imported_lists, "items": imported_items}
+
+    async def _write_config_backup(self) -> None:
+        """Silently write a backup JSON to the HA config directory."""
+        try:
+            backup_path = os.path.join(
+                self.hass.config.config_dir,
+                "shopping_list_manager_backup.json",
+            )
+            data = await self.export_user_data()
+
+            def _write() -> None:
+                with open(backup_path, "w", encoding="utf-8") as f:
+                    json.dump(data, f, indent=2, ensure_ascii=False)
+
+            await self.hass.async_add_executor_job(_write)
+            _LOGGER.debug("Auto-backup written to %s", backup_path)
+        except Exception as err:
+            _LOGGER.warning("Failed to write config backup: %s", err)
     
     # Categories methods
     async def _save_categories(self) -> None:
@@ -486,3 +672,81 @@ class ShoppingListStorage:
     def get_categories(self) -> List[Category]:
         """Get all categories."""
         return self._categories
+
+    # Loyalty card methods
+    async def _save_loyalty_cards(self) -> None:
+        """Save loyalty cards to storage."""
+        data = {card_id: card.to_dict() for card_id, card in self._loyalty_cards.items()}
+        await self._store_loyalty_cards.async_save(data)
+
+    def get_loyalty_cards(self, user_id: str = None, is_admin: bool = False) -> List[LoyaltyCard]:
+        """Get loyalty cards visible to the specified user.
+
+        Global cards (owner_id=None) are visible to everyone.
+        Private cards are visible to their owner, anyone in allowed_users, and admins.
+        """
+        all_cards = list(self._loyalty_cards.values())
+        if is_admin or user_id is None:
+            return all_cards
+        return [
+            card for card in all_cards
+            if card.owner_id is None
+            or card.owner_id == user_id
+            or user_id in (card.allowed_users or [])
+        ]
+
+    def get_loyalty_card(self, card_id: str) -> Optional[LoyaltyCard]:
+        """Get a specific loyalty card."""
+        return self._loyalty_cards.get(card_id)
+
+    async def create_loyalty_card(self, owner_id: str = None, **kwargs) -> LoyaltyCard:
+        """Create a new loyalty card."""
+        from .models import current_timestamp
+        new_card = LoyaltyCard(
+            id=generate_id(),
+            owner_id=owner_id,
+            **kwargs
+        )
+        self._loyalty_cards[new_card.id] = new_card
+        await self._save_loyalty_cards()
+        _LOGGER.debug("Created loyalty card: %s", new_card.name)
+        return new_card
+
+    async def update_loyalty_card(self, card_id: str, **kwargs) -> Optional[LoyaltyCard]:
+        """Update a loyalty card."""
+        if card_id not in self._loyalty_cards:
+            return None
+
+        card = self._loyalty_cards[card_id]
+        for key, value in kwargs.items():
+            if hasattr(card, key):
+                setattr(card, key, value)
+
+        from .models import current_timestamp
+        card.updated_at = current_timestamp()
+        await self._save_loyalty_cards()
+        _LOGGER.debug("Updated loyalty card: %s", card_id)
+        return card
+
+    async def delete_loyalty_card(self, card_id: str) -> bool:
+        """Delete a loyalty card."""
+        if card_id not in self._loyalty_cards:
+            return False
+
+        del self._loyalty_cards[card_id]
+        await self._save_loyalty_cards()
+        _LOGGER.debug("Deleted loyalty card: %s", card_id)
+        return True
+
+    async def update_loyalty_card_members(self, card_id: str, allowed_users: List[str]) -> Optional[LoyaltyCard]:
+        """Update the allowed_users for a private loyalty card."""
+        if card_id not in self._loyalty_cards:
+            return None
+
+        card = self._loyalty_cards[card_id]
+        card.allowed_users = allowed_users
+        from .models import current_timestamp
+        card.updated_at = current_timestamp()
+        await self._save_loyalty_cards()
+        _LOGGER.debug("Updated members for loyalty card: %s", card_id)
+        return card

custom_components/shopping_list_manager/websocket/handlers.py

@@ -6,6 +6,7 @@ import voluptuous as vol
 
 from homeassistant.components import websocket_api
 from homeassistant.core import HomeAssistant, callback
+from ..const import DOMAIN
 
 from ..const import (
     WS_TYPE_LISTS_GET_ALL,
@@ -13,6 +14,8 @@ from ..const import (
     WS_TYPE_LISTS_UPDATE,
     WS_TYPE_LISTS_DELETE,
     WS_TYPE_LISTS_SET_ACTIVE,
+    WS_TYPE_LISTS_UPDATE_MEMBERS,
+    WS_TYPE_USERS_GET_ALL,
     WS_TYPE_ITEMS_GET,
     WS_TYPE_ITEMS_ADD,
     WS_TYPE_ITEMS_UPDATE,
@@ -27,6 +30,12 @@ from ..const import (
     WS_TYPE_PRODUCTS_ADD,
     WS_TYPE_PRODUCTS_UPDATE,
     WS_TYPE_CATEGORIES_GET_ALL,
+    WS_TYPE_LOYALTY_GET_ALL,
+    WS_TYPE_LOYALTY_ADD,
+    WS_TYPE_LOYALTY_UPDATE,
+    WS_TYPE_LOYALTY_DELETE,
+    WS_TYPE_LOYALTY_UPDATE_MEMBERS,
+    WS_TYPE_SUBSCRIBE,
     EVENT_ITEM_ADDED,
     EVENT_ITEM_UPDATED,
     EVENT_ITEM_CHECKED,
@@ -39,10 +48,191 @@ from .. import get_storage
 _LOGGER = logging.getLogger(__name__)
 
 
+# =============================================================================
+# ACCESS-CHECK HELPERS
+# =============================================================================
+
+def _user_can_access_list(lst, user) -> bool:
+    """Return True if the user may read or write to this list.
+
+    Global lists (owner_id=None) are accessible to everyone.
+    Private lists are accessible to their owner, anyone in allowed_users, and admins.
+    """
+    if lst.owner_id is None:
+        return True
+    if user is None:
+        return False
+    if user.is_admin or user.id == lst.owner_id:
+        return True
+    return user.id in (lst.allowed_users or [])
+
+
+def _check_list_access(storage, connection, msg, list_id, require_owner=False):
+    """Verify the connected user may access list_id.
+
+    Sends the appropriate WebSocket error if access is denied.
+    Returns the ShoppingList object on success, or None if an error was sent.
+
+    Args:
+        require_owner: When True, only the list owner (or an admin) is allowed.
+                       Use for destructive/administrative operations.
+    """
+    lst = storage.get_list(list_id)
+    if lst is None:
+        connection.send_error(msg["id"], "not_found", "List not found")
+        return None
+
+    user = connection.user
+    if require_owner:
+        if lst.owner_id is not None and not (user and (user.is_admin or user.id == lst.owner_id)):
+            connection.send_error(msg["id"], "forbidden", "Only the list owner can perform this action")
+            return None
+    else:
+        if not _user_can_access_list(lst, user):
+            connection.send_error(msg["id"], "forbidden", "You do not have access to this list")
+            return None
+
+    return lst
+
+
+def _find_item_list_id(storage, item_id):
+    """Return the list_id that contains item_id, or None if not found."""
+    for list_id, items in storage._items.items():
+        for item in items:
+            if item.id == item_id:
+                return list_id
+    return None
+
+
 # =============================================================================
 # LIST HANDLERS
 # =============================================================================
 
+@websocket_api.websocket_command({
+    vol.Required("type"): WS_TYPE_SUBSCRIBE,
+})
+@websocket_api.async_response
+async def websocket_subscribe(
+    hass: HomeAssistant,
+    connection: websocket_api.ActiveConnection,
+    msg: dict,
+) -> None:
+    """Subscribe to shopping list manager events via WebSocket."""
+    storage = get_storage(hass)
+
+    @callback
+    def forward_event(event):
+        """Forward HA bus event to WebSocket connection.
+
+        Events that reference a list_id are only forwarded if the connected
+        user has access to that list, preventing cross-user data leakage.
+        """
+        data = event.data
+        list_id = data.get("list_id")
+        if list_id:
+            lst = storage.get_list(list_id)
+            if lst and not _user_can_access_list(lst, connection.user):
+                return  # skip — user cannot see this list
+
+        connection.send_message(
+            websocket_api.event_message(
+                msg["id"],
+                {
+                    "event_type": event.event_type,
+                    "data": data,
+                }
+            )
+        )
+    
+    # Subscribe to all SLM events on the HA bus (backend has permission)
+    unsubs = []
+    unsubs.append(hass.bus.async_listen(EVENT_ITEM_ADDED, forward_event))
+    unsubs.append(hass.bus.async_listen(EVENT_ITEM_UPDATED, forward_event))
+    unsubs.append(hass.bus.async_listen(EVENT_ITEM_CHECKED, forward_event))
+    unsubs.append(hass.bus.async_listen(EVENT_ITEM_DELETED, forward_event))
+    unsubs.append(hass.bus.async_listen(EVENT_LIST_UPDATED, forward_event))
+    unsubs.append(hass.bus.async_listen(EVENT_LIST_DELETED, forward_event))
+    
+    # Clean up when connection closes
+    connection.subscriptions[msg["id"]] = lambda: [unsub() for unsub in unsubs]
+    
+    connection.send_message(websocket_api.result_message(msg["id"]))
+
+@websocket_api.websocket_command({
+    vol.Required("type"): "shopping_list_manager/items/increment",
+    vol.Required("item_id"): str,
+    vol.Required("amount"): vol.Coerce(float),
+})
+@websocket_api.async_response
+async def websocket_increment_item(
+    hass: HomeAssistant,
+    connection: websocket_api.ActiveConnection,
+    msg: Dict[str, Any],
+) -> None:
+    """Increment item quantity atomically."""
+
+    storage = get_storage(hass)
+    item_id = msg["item_id"]
+    amount = msg["amount"]
+
+    # First get current item
+    for list_id, items in storage._items.items():
+        for item in items:
+            if item.id == item_id:
+                new_quantity = item.quantity + amount
+
+                if new_quantity < 1:
+                    new_quantity = 1
+
+                updated_item = await storage.update_item(
+                    item_id,
+                    quantity=new_quantity
+                )
+                if updated_item:
+                    hass.bus.async_fire(
+                        EVENT_ITEM_UPDATED,
+                        {
+                            "list_id": updated_item.list_id,
+                            "item_id": item_id,
+                            "item": updated_item.to_dict()
+                        }
+                    )
+                    connection.send_result(msg["id"], {
+                        "item": updated_item.to_dict()
+                    })
+                    return
+
+    connection.send_error(msg["id"], "not_found", "Item not found")
+
+
+@websocket_api.websocket_command({
+    vol.Required("type"): "shopping_list_manager/products/get_by_ids",
+    vol.Required("product_ids"): [str],
+})
+@websocket_api.async_response
+async def ws_get_products_by_ids(
+    hass: HomeAssistant,
+    connection: websocket_api.ActiveConnection,
+    msg: Dict[str, Any],
+) -> None:
+    """Return products matching given product IDs."""
+
+    storage = get_storage(hass)
+    product_ids = set(msg["product_ids"])
+
+    # Get all products from storage
+    all_products = storage.get_products()
+
+    products = [
+        product.to_dict()
+        for product in all_products
+        if product.id in product_ids
+    ]
+
+    connection.send_result(msg["id"], {"products": products})
+
+
+
 @websocket_api.websocket_command(
     {
         vol.Required("type"): WS_TYPE_LISTS_GET_ALL,
@@ -56,8 +246,11 @@ def websocket_get_lists(
 ) -> None:
     """Handle get all lists command."""
     storage = get_storage(hass)
-    lists = storage.get_lists()
+    user = connection.user
-    
+    user_id = user.id if user else None
+    is_admin = user.is_admin if user else False
+    lists = storage.get_lists(user_id=user_id, is_admin=is_admin)
+
     connection.send_result(
         msg["id"],
         {
@@ -71,6 +264,7 @@ def websocket_get_lists(
         vol.Required("type"): WS_TYPE_LISTS_CREATE,
         vol.Required("name"): str,
         vol.Optional("icon", default="mdi:cart"): str,
+        vol.Optional("private", default=True): bool,
     }
 )
 @websocket_api.async_response
@@ -81,10 +275,15 @@ async def websocket_create_list(
 ) -> None:
     """Handle create list command."""
     storage = get_storage(hass)
-    
+
+    # Private lists are owned by the creating user; global lists have no owner.
+    is_private = msg.get("private", True)
+    owner_id = connection.user.id if is_private and connection.user else None
+
     new_list = await storage.create_list(
         name=msg["name"],
-        icon=msg.get("icon", "mdi:cart")
+        icon=msg.get("icon", "mdi:cart"),
+        owner_id=owner_id,
     )
     
     # Fire event
@@ -117,7 +316,10 @@ async def websocket_update_list(
     """Handle update list command."""
     storage = get_storage(hass)
     list_id = msg["list_id"]
-    
+
+    if _check_list_access(storage, connection, msg, list_id, require_owner=True) is None:
+        return
+
     # Build update kwargs
     update_data = {}
     if "name" in msg:
@@ -160,9 +362,21 @@ async def websocket_delete_list(
     """Handle delete list command."""
     storage = get_storage(hass)
     list_id = msg["list_id"]
-    
+
+    lst = storage.get_list(list_id)
+    if lst is None:
+        connection.send_error(msg["id"], "not_found", "List not found")
+        return
+
+    # Only the owner or an admin may delete a private list
+    if lst.owner_id is not None:
+        user = connection.user
+        if not (user and (user.is_admin or user.id == lst.owner_id)):
+            connection.send_error(msg["id"], "forbidden", "Only the list owner can delete this list")
+            return
+
     success = await storage.delete_list(list_id)
-    
+
     if not success:
         connection.send_error(msg["id"], "not_found", "List not found")
         return
@@ -191,7 +405,10 @@ async def websocket_set_active_list(
     """Handle set active list command."""
     storage = get_storage(hass)
     list_id = msg["list_id"]
-    
+
+    if _check_list_access(storage, connection, msg, list_id) is None:
+        return
+
     success = await storage.set_active_list(list_id)
     
     if not success:
@@ -226,7 +443,10 @@ def websocket_get_items(
     """Handle get items command."""
     storage = get_storage(hass)
     list_id = msg["list_id"]
-    
+
+    if _check_list_access(storage, connection, msg, list_id) is None:
+        return
+
     items = storage.get_items(list_id)
     
     connection.send_result(
@@ -261,7 +481,10 @@ async def websocket_add_item(
     """Handle add item command."""
     storage = get_storage(hass)
     list_id = msg["list_id"]
-    
+
+    if _check_list_access(storage, connection, msg, list_id) is None:
+        return
+
     # Build item data
     item_data = {
         "name": msg["name"],
@@ -320,7 +543,14 @@ async def websocket_update_item(
     """Handle update item command."""
     storage = get_storage(hass)
     item_id = msg["item_id"]
-    
+
+    list_id = _find_item_list_id(storage, item_id)
+    if list_id is None:
+        connection.send_error(msg["id"], "not_found", "Item not found")
+        return
+    if _check_list_access(storage, connection, msg, list_id) is None:
+        return
+
     # Build update data
     update_data = {}
     update_fields = ["name", "quantity", "unit", "note", "price", "category_id", "image_url"]
@@ -405,7 +635,14 @@ async def websocket_delete_item(
     """Handle delete item command."""
     storage = get_storage(hass)
     item_id = msg["item_id"]
-    
+
+    list_id = _find_item_list_id(storage, item_id)
+    if list_id is None:
+        connection.send_error(msg["id"], "not_found", "Item not found")
+        return
+    if _check_list_access(storage, connection, msg, list_id) is None:
+        return
+
     success = await storage.delete_item(item_id)
     
     if not success:
@@ -547,39 +784,24 @@ def websocket_get_list_total(
 
 @websocket_api.websocket_command(
     {
-        vol.Required("type"): WS_TYPE_PRODUCTS_SEARCH,
+        vol.Required("type"): "shopping_list_manager/products/search_by_barcode",
-        vol.Required("query"): str,
+        vol.Required("barcode"): str,
-        vol.Optional("limit", default=10): int,
-        vol.Optional("exclude_allergens", default=None): vol.Any(None, [str]),
-        vol.Optional("include_tags", default=None): vol.Any(None, [str]),
-        vol.Optional("substitution_group", default=None): vol.Any(None, str),
     }
 )
 @callback
-def websocket_search_products(
+def websocket_search_by_barcode(
     hass: HomeAssistant,
     connection: websocket_api.ActiveConnection,
     msg: Dict[str, Any],
 ) -> None:
-    """Handle search products command with enhanced filters."""
+    """Find a single product by exact barcode match."""
     storage = get_storage(hass)
-    
+    barcode = msg["barcode"].strip()
-    try:
+    match = next(
-        results = storage.search_products(
+        (p for p in storage._products.values() if p.barcode and p.barcode == barcode),
-            query=msg["query"],
+        None,
-            limit=msg.get("limit", 10),
+    )
-            exclude_allergens=msg.get("exclude_allergens"),
+    connection.send_result(msg["id"], {"product": match.to_dict() if match else None})
-            include_tags=msg.get("include_tags"),
-            substitution_group=msg.get("substitution_group"),
-        )
-        
-        connection.send_result(
-            msg["id"],
-            {"products": [product.to_dict() for product in results]}
-        )
-    except Exception as err:
-        _LOGGER.error("Error searching products: %s", err)
-        connection.send_error(msg["id"], "search_failed", str(err))
 
 
 @websocket_api.websocket_command(
@@ -791,3 +1013,323 @@ def websocket_get_categories(
             "categories": [cat.to_dict() for cat in categories]
         }
     )
+
+
+# =============================================================================
+# INTEGRATION SETTINGS HANDLERS
+# =============================================================================
+
+@websocket_api.websocket_command(
+    {
+        vol.Required("type"): "shopping_list_manager/get_integration_settings",
+    }
+)
+@callback
+def websocket_get_integration_settings(
+    hass: HomeAssistant,
+    connection: websocket_api.ActiveConnection,
+    msg: Dict[str, Any],
+) -> None:
+    """Return current country and available country options."""
+    country = hass.data[DOMAIN].get("country", "NZ")
+    connection.send_result(
+        msg["id"],
+        {
+            "country": country,
+            "available_countries": {
+                "NZ": "New Zealand",
+                "AU": "Australia",
+                "US": "United States",
+                "GB": "United Kingdom",
+                "CA": "Canada",
+            },
+        }
+    )
+
+
+_VALID_COUNTRIES = ["NZ", "AU", "US", "GB", "CA"]
+
+@websocket_api.websocket_command(
+    {
+        vol.Required("type"): "shopping_list_manager/set_country",
+        vol.Required("country"): vol.In(_VALID_COUNTRIES),
+    }
+)
+@websocket_api.async_response
+async def websocket_set_country(
+    hass: HomeAssistant,
+    connection: websocket_api.ActiveConnection,
+    msg: Dict[str, Any],
+) -> None:
+    """Switch to a different country catalog. Preserves user-added products."""
+    country = msg["country"].upper()
+    storage = get_storage(hass)
+
+    count = await storage.reload_catalog(country)
+
+    # Persist to HA config entry so country survives restart
+    entries = hass.config_entries.async_entries(DOMAIN)
+    if entries:
+        entry = entries[0]
+        hass.config_entries.async_update_entry(entry, options={**entry.options, "country": country})
+
+    hass.data[DOMAIN]["country"] = country
+
+    connection.send_result(
+        msg["id"],
+        {"success": True, "country": country, "products_loaded": count}
+    )
+
+
+# =============================================================================
+# BACKUP / RESTORE HANDLERS
+# =============================================================================
+
+@websocket_api.websocket_command(
+    {
+        vol.Required("type"): "shopping_list_manager/export_data",
+    }
+)
+@websocket_api.async_response
+async def websocket_export_data(
+    hass: HomeAssistant,
+    connection: websocket_api.ActiveConnection,
+    msg: Dict[str, Any],
+) -> None:
+    """Export all user-created data as a JSON-serialisable dict."""
+    storage = get_storage(hass)
+    data = await storage.export_user_data()
+    connection.send_result(msg["id"], data)
+
+
+@websocket_api.websocket_command(
+    {
+        vol.Required("type"): "shopping_list_manager/import_data",
+        vol.Required("data"): dict,
+    }
+)
+@websocket_api.async_response
+async def websocket_import_data(
+    hass: HomeAssistant,
+    connection: websocket_api.ActiveConnection,
+    msg: Dict[str, Any],
+) -> None:
+    """Import user data from a backup payload."""
+    storage = get_storage(hass)
+    counts = await storage.import_user_data(msg["data"])
+    connection.send_result(msg["id"], {"success": True, "imported": counts})
+
+
+# =============================================================================
+# LIST MEMBERS HANDLER
+# =============================================================================
+
+@websocket_api.websocket_command(
+    {
+        vol.Required("type"): WS_TYPE_LISTS_UPDATE_MEMBERS,
+        vol.Required("list_id"): str,
+        vol.Required("allowed_users"): [str],
+    }
+)
+@websocket_api.async_response
+async def websocket_update_list_members(
+    hass: HomeAssistant,
+    connection: websocket_api.ActiveConnection,
+    msg: Dict[str, Any],
+) -> None:
+    """Update the allowed_users for a private list."""
+    storage = get_storage(hass)
+    list_id = msg["list_id"]
+
+    lst = storage.get_list(list_id)
+    if lst is None:
+        connection.send_error(msg["id"], "not_found", "List not found")
+        return
+
+    # Only the owner or an admin may manage members
+    user = connection.user
+    if lst.owner_id is not None and not (user and (user.is_admin or user.id == lst.owner_id)):
+        connection.send_error(msg["id"], "forbidden", "Only the list owner can manage members")
+        return
+
+    updated = await storage.update_list_members(list_id, msg["allowed_users"])
+    hass.bus.async_fire(
+        EVENT_LIST_UPDATED,
+        {"list_id": list_id, "action": "members_updated"}
+    )
+    connection.send_result(msg["id"], {"list": updated.to_dict()})
+
+
+# =============================================================================
+# HA USERS HANDLER
+# =============================================================================
+
+@websocket_api.websocket_command(
+    {
+        vol.Required("type"): WS_TYPE_USERS_GET_ALL,
+    }
+)
+@websocket_api.async_response
+async def websocket_get_ha_users(
+    hass: HomeAssistant,
+    connection: websocket_api.ActiveConnection,
+    msg: Dict[str, Any],
+) -> None:
+    """Return all active, non-system HA users."""
+    users = await hass.auth.async_get_users()
+    result = [
+        {"id": u.id, "name": u.name}
+        for u in users
+        if not u.system_generated and u.is_active
+    ]
+    connection.send_result(msg["id"], {"users": result})
+
+
+# =============================================================================
+# LOYALTY CARD HANDLERS
+# =============================================================================
+
+@websocket_api.websocket_command({
+    vol.Required("type"): WS_TYPE_LOYALTY_GET_ALL,
+})
+@websocket_api.async_response
+async def websocket_get_loyalty_cards(
+    hass: HomeAssistant,
+    connection: websocket_api.ActiveConnection,
+    msg: Dict[str, Any],
+) -> None:
+    """Return all loyalty cards visible to the current user."""
+    storage = get_storage(hass)
+    user = connection.user
+    user_id = user.id if user else None
+    is_admin = user.is_admin if user else False
+    cards = storage.get_loyalty_cards(user_id=user_id, is_admin=is_admin)
+    connection.send_result(msg["id"], {"cards": [c.to_dict() for c in cards]})
+
+
+@websocket_api.websocket_command({
+    vol.Required("type"): WS_TYPE_LOYALTY_ADD,
+    vol.Required("name"): str,
+    vol.Required("number"): str,
+    vol.Optional("barcode", default=""): str,
+    vol.Optional("barcode_type", default="barcode"): str,
+    vol.Optional("logo", default=""): str,
+    vol.Optional("notes", default=""): str,
+    vol.Optional("color", default="#9fa8da"): str,
+    vol.Optional("private", default=True): bool,
+})
+@websocket_api.async_response
+async def websocket_add_loyalty_card(
+    hass: HomeAssistant,
+    connection: websocket_api.ActiveConnection,
+    msg: Dict[str, Any],
+) -> None:
+    """Add a new loyalty card."""
+    storage = get_storage(hass)
+    user = connection.user
+    owner_id = user.id if (user and msg.get("private")) else None
+
+    card = await storage.create_loyalty_card(
+        owner_id=owner_id,
+        name=msg["name"],
+        number=msg["number"],
+        barcode=msg.get("barcode", ""),
+        barcode_type=msg.get("barcode_type", "barcode"),
+        logo=msg.get("logo", ""),
+        notes=msg.get("notes", ""),
+        color=msg.get("color", "#9fa8da"),
+    )
+    connection.send_result(msg["id"], {"card": card.to_dict()})
+
+
+@websocket_api.websocket_command({
+    vol.Required("type"): WS_TYPE_LOYALTY_UPDATE,
+    vol.Required("card_id"): str,
+    vol.Optional("name"): str,
+    vol.Optional("number"): str,
+    vol.Optional("barcode"): str,
+    vol.Optional("barcode_type"): str,
+    vol.Optional("logo"): str,
+    vol.Optional("notes"): str,
+    vol.Optional("color"): str,
+})
+@websocket_api.async_response
+async def websocket_update_loyalty_card(
+    hass: HomeAssistant,
+    connection: websocket_api.ActiveConnection,
+    msg: Dict[str, Any],
+) -> None:
+    """Update an existing loyalty card."""
+    storage = get_storage(hass)
+    card_id = msg["card_id"]
+
+    card = storage.get_loyalty_card(card_id)
+    if card is None:
+        connection.send_error(msg["id"], "not_found", "Loyalty card not found")
+        return
+
+    user = connection.user
+    if card.owner_id is not None and not (user and (user.is_admin or user.id == card.owner_id)):
+        connection.send_error(msg["id"], "forbidden", "Only the card owner can update it")
+        return
+
+    fields = {k: v for k, v in msg.items() if k not in ("type", "id", "card_id")}
+    updated = await storage.update_loyalty_card(card_id, **fields)
+    connection.send_result(msg["id"], {"card": updated.to_dict()})
+
+
+@websocket_api.websocket_command({
+    vol.Required("type"): WS_TYPE_LOYALTY_DELETE,
+    vol.Required("card_id"): str,
+})
+@websocket_api.async_response
+async def websocket_delete_loyalty_card(
+    hass: HomeAssistant,
+    connection: websocket_api.ActiveConnection,
+    msg: Dict[str, Any],
+) -> None:
+    """Delete a loyalty card."""
+    storage = get_storage(hass)
+    card_id = msg["card_id"]
+
+    card = storage.get_loyalty_card(card_id)
+    if card is None:
+        connection.send_error(msg["id"], "not_found", "Loyalty card not found")
+        return
+
+    user = connection.user
+    if card.owner_id is not None and not (user and (user.is_admin or user.id == card.owner_id)):
+        connection.send_error(msg["id"], "forbidden", "Only the card owner can delete it")
+        return
+
+    await storage.delete_loyalty_card(card_id)
+    connection.send_result(msg["id"], {"success": True})
+
+
+@websocket_api.websocket_command({
+    vol.Required("type"): WS_TYPE_LOYALTY_UPDATE_MEMBERS,
+    vol.Required("card_id"): str,
+    vol.Required("allowed_users"): [str],
+})
+@websocket_api.async_response
+async def websocket_update_loyalty_card_members(
+    hass: HomeAssistant,
+    connection: websocket_api.ActiveConnection,
+    msg: Dict[str, Any],
+) -> None:
+    """Update the allowed_users for a private loyalty card."""
+    storage = get_storage(hass)
+    card_id = msg["card_id"]
+
+    card = storage.get_loyalty_card(card_id)
+    if card is None:
+        connection.send_error(msg["id"], "not_found", "Loyalty card not found")
+        return
+
+    user = connection.user
+    if card.owner_id is not None and not (user and (user.is_admin or user.id == card.owner_id)):
+        connection.send_error(msg["id"], "forbidden", "Only the card owner can manage members")
+        return
+
+    updated = await storage.update_loyalty_card_members(card_id, msg["allowed_users"])
+    connection.send_result(msg["id"], {"card": updated.to_dict()})