wire shop LiveViews to DB queries and improve search UX

Replace PreviewData indirection in all shop LiveViews with direct
Products context queries. Home, collection, product detail and error
pages now query the database. Categories loaded once in ThemeHook.
Cart hydration no longer falls back to mock data. PreviewData kept
only for the theme editor.

Search modal gains keyboard navigation (arrow keys, Enter, Escape),
Cmd+K/Ctrl+K shortcut, full ARIA combobox pattern, LiveView navigate
links, and 150ms debounce. SearchModal JS hook manages selection
state and highlight. search.ex gets transaction safety on reindex
and a public remove_product/1. 10 new integration tests.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

lib/simpleshop_theme_web/live/admin/theme/index.ex

@@ -311,6 +311,8 @@ defmodule SimpleshopThemeWeb.Admin.Theme.Index do
   defp preview_assigns(assigns) do
     assign(assigns, %{
       mode: :preview,
+      products: assigns.preview_data.products,
+      categories: assigns.preview_data.categories,
       cart_items: PreviewData.cart_drawer_items(),
       cart_count: 2,
       cart_subtotal: "£72.00"

lib/simpleshop_theme_web/live/shop/collection.ex

@@ -1,7 +1,7 @@
 defmodule SimpleshopThemeWeb.Shop.Collection do
   use SimpleshopThemeWeb, :live_view
 
-  alias SimpleshopTheme.Theme.PreviewData
+  alias SimpleshopTheme.Products
 
   @sort_options [
     {"featured", "Featured"},
@@ -16,7 +16,6 @@ defmodule SimpleshopThemeWeb.Shop.Collection do
   def mount(_params, _session, socket) do
     socket =
       socket
-      |> assign(:categories, PreviewData.categories())
       |> assign(:sort_options, @sort_options)
       |> assign(:current_sort, "featured")
 
@@ -27,7 +26,7 @@ defmodule SimpleshopThemeWeb.Shop.Collection do
   def handle_params(%{"slug" => slug} = params, _uri, socket) do
     sort = params["sort"] || "featured"
 
-    case load_collection(slug) do
+    case load_collection(slug, sort) do
       {:ok, title, category, products} ->
         {:noreply,
          socket
@@ -35,7 +34,7 @@ defmodule SimpleshopThemeWeb.Shop.Collection do
          |> assign(:collection_title, title)
          |> assign(:current_category, category)
          |> assign(:current_sort, sort)
-         |> assign(:products, sort_products(products, sort))}
+         |> assign(:products, products)}
 
       :not_found ->
         {:noreply,
@@ -45,19 +44,22 @@ defmodule SimpleshopThemeWeb.Shop.Collection do
     end
   end
 
-  defp load_collection("all") do
-    {:ok, "All Products", nil, PreviewData.products()}
+  defp load_collection("all", sort) do
+    {:ok, "All Products", nil, Products.list_visible_products(sort: sort)}
   end
 
-  defp load_collection("sale") do
-    sale_products = Enum.filter(PreviewData.products(), & &1.on_sale)
-    {:ok, "Sale", :sale, sale_products}
+  defp load_collection("sale", sort) do
+    {:ok, "Sale", :sale, Products.list_visible_products(on_sale: true, sort: sort)}
   end
 
-  defp load_collection(slug) do
-    case PreviewData.category_by_slug(slug) do
-      nil -> :not_found
-      category -> {:ok, category.name, category, PreviewData.products_by_category(slug)}
+  defp load_collection(slug, sort) do
+    case Enum.find(Products.list_categories(), &(&1.slug == slug)) do
+      nil ->
+        :not_found
+
+      category ->
+        products = Products.list_visible_products(category: category.name, sort: sort)
+        {:ok, category.name, category, products}
     end
   end
 
@@ -73,17 +75,6 @@ defmodule SimpleshopThemeWeb.Shop.Collection do
     {:noreply, push_patch(socket, to: ~p"/collections/#{slug}?sort=#{sort}")}
   end
 
-  defp sort_products(products, "featured"), do: products
-  defp sort_products(products, "newest"), do: Enum.reverse(products)
-  defp sort_products(products, "price_asc"), do: Enum.sort_by(products, & &1.cheapest_price)
-
-  defp sort_products(products, "price_desc"),
-    do: Enum.sort_by(products, & &1.cheapest_price, :desc)
-
-  defp sort_products(products, "name_asc"), do: Enum.sort_by(products, & &1.title)
-  defp sort_products(products, "name_desc"), do: Enum.sort_by(products, & &1.title, :desc)
-  defp sort_products(products, _), do: products
-
   defp collection_path(slug, "featured"), do: ~p"/collections/#{slug}"
   defp collection_path(slug, sort), do: ~p"/collections/#{slug}?sort=#{sort}"
 

lib/simpleshop_theme_web/live/shop/home.ex

@@ -1,19 +1,16 @@
 defmodule SimpleshopThemeWeb.Shop.Home do
   use SimpleshopThemeWeb, :live_view
 
-  alias SimpleshopTheme.Theme.PreviewData
+  alias SimpleshopTheme.Products
 
   @impl true
   def mount(_params, _session, socket) do
-    preview_data = %{
-      products: PreviewData.products(),
-      categories: PreviewData.categories()
-    }
+    products = Products.list_visible_products(limit: 8)
 
     socket =
       socket
       |> assign(:page_title, "Home")
-      |> assign(:preview_data, preview_data)
+      |> assign(:products, products)
 
     {:ok, socket}
   end

lib/simpleshop_theme_web/live/shop/product_show.ex

@@ -2,61 +2,53 @@ defmodule SimpleshopThemeWeb.Shop.ProductShow do
   use SimpleshopThemeWeb, :live_view
 
   alias SimpleshopTheme.Cart
+  alias SimpleshopTheme.Products
   alias SimpleshopTheme.Products.{Product, ProductImage}
-  alias SimpleshopTheme.Theme.PreviewData
 
   @impl true
-  def mount(%{"id" => id}, _session, socket) do
-    products = PreviewData.products()
+  def mount(%{"id" => slug}, _session, socket) do
+    case Products.get_visible_product(slug) do
+      nil ->
+        {:ok, push_navigate(socket, to: ~p"/collections/all")}
 
-    # Find product by slug or ID (real products use slugs, mock data uses string IDs)
-    product = find_product(products, id)
+      product ->
+        related_products =
+          Products.list_visible_products(
+            category: product.category,
+            limit: 4,
+            exclude: product.id
+          )
 
-    # Get related products (exclude current product, take 4)
-    related_products =
-      products
-      |> Enum.reject(fn p -> p.id == product.id end)
-      |> Enum.take(4)
+        gallery_images =
+          (product.images || [])
+          |> Enum.sort_by(& &1.position)
+          |> Enum.map(fn img -> ProductImage.direct_url(img, 1200) end)
+          |> Enum.reject(&is_nil/1)
 
-    # Build gallery images from local image_id or external URL
-    gallery_images =
-      (Map.get(product, :images) || [])
-      |> Enum.sort_by(& &1.position)
-      |> Enum.map(fn img -> ProductImage.direct_url(img, 1200) end)
-      |> Enum.reject(&is_nil/1)
+        option_types = Product.option_types(product)
+        variants = product.variants || []
+        {selected_options, selected_variant} = initialize_variant_selection(variants)
+        available_options = compute_available_options(option_types, variants, selected_options)
+        display_price = variant_price(selected_variant, product)
 
-    # Initialize variant selection
-    option_types = Product.option_types(product)
-    variants = Map.get(product, :variants) || []
-    {selected_options, selected_variant} = initialize_variant_selection(variants)
-    available_options = compute_available_options(option_types, variants, selected_options)
-    display_price = variant_price(selected_variant, product)
+        socket =
+          socket
+          |> assign(:page_title, product.title)
+          |> assign(:product, product)
+          |> assign(:gallery_images, gallery_images)
+          |> assign(:related_products, related_products)
+          |> assign(:quantity, 1)
+          |> assign(:option_types, option_types)
+          |> assign(:variants, variants)
+          |> assign(:selected_options, selected_options)
+          |> assign(:selected_variant, selected_variant)
+          |> assign(:available_options, available_options)
+          |> assign(:display_price, display_price)
 
-    socket =
-      socket
-      |> assign(:page_title, product.title)
-      |> assign(:product, product)
-      |> assign(:gallery_images, gallery_images)
-      |> assign(:related_products, related_products)
-      |> assign(:quantity, 1)
-      |> assign(:option_types, option_types)
-      |> assign(:variants, variants)
-      |> assign(:selected_options, selected_options)
-      |> assign(:selected_variant, selected_variant)
-      |> assign(:available_options, available_options)
-      |> assign(:display_price, display_price)
-
-    {:ok, socket}
+        {:ok, socket}
+    end
   end
 
-  # Find product by slug first (real products), then try ID match (mock data)
-  defp find_product(products, id) do
-    Enum.find(products, fn p -> p[:slug] == id end) ||
-      Enum.find(products, fn p -> p.id == id end) ||
-      List.first(products)
-  end
-
-  # Select first available variant by default
   defp initialize_variant_selection([first | _] = _variants) do
     {first.options, first}
   end
@@ -65,11 +57,8 @@ defmodule SimpleshopThemeWeb.Shop.ProductShow do
     {%{}, nil}
   end
 
-  # Compute which option values are available given current selection
   defp compute_available_options(option_types, variants, selected_options) do
     Enum.reduce(option_types, %{}, fn opt_type, acc ->
-      # For each option type, find which values have at least one available variant
-      # when combined with the other selected options
       other_options = Map.delete(selected_options, opt_type.name)
 
       available_values =
@@ -99,10 +88,8 @@ defmodule SimpleshopThemeWeb.Shop.ProductShow do
   def handle_event("select_option", %{"option" => option_name, "value" => value}, socket) do
     selected_options = Map.put(socket.assigns.selected_options, option_name, value)
 
-    # Find matching variant
     selected_variant = find_variant(socket.assigns.variants, selected_options)
 
-    # Recompute available options based on new selection
     available_options =
       compute_available_options(
         socket.assigns.option_types,