feat: Add country selection for product catalogs, including new WebSocket handlers and catalog reloading logic.

custom_components/shopping_list_manager/__init__.py

@@ -203,6 +203,16 @@ async def _async_register_websocket_handlers(
         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,
+    )
+
     _LOGGER.debug("WebSocket handlers registered")
 
 

custom_components/shopping_list_manager/storage.py

@@ -466,6 +466,54 @@ class ShoppingListStorage:
         _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:

custom_components/shopping_list_manager/websocket/handlers.py

@@ -869,3 +869,67 @@ 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",
+            },
+        }
+    )
+
+
+@websocket_api.websocket_command(
+    {
+        vol.Required("type"): "shopping_list_manager/set_country",
+        vol.Required("country"): str,
+    }
+)
+@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}
+    )