switch mockup generator to UK print providers and add --replace flag

- Prefer Print Clever (72) for canvas, Monster Digital (29) for
  apparel and mugs where available, fall back to default providers
- Rename Art Print products to Canvas (new Satin Canvas blueprint)
- Add Canvas Prints category in Printify tag extraction
- Add --replace/-r flag to purge existing Printify products before
  generating (with interactive confirmation)
- Add purge_all_products/1 to generator module
- Remove old art print mockups, add new canvas + extra provider mockups

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

lib/simpleshop_theme/mockups/generator.ex

@@ -21,43 +21,43 @@ defmodule SimpleshopTheme.Mockups.Generator do
   def product_definitions do
     [
       %{
-        name: "Mountain Sunrise Art Print",
-        slug: "mountain-sunrise-print",
-        category: "Art Prints",
+        name: "Mountain Sunrise Canvas",
+        slug: "mountain-sunrise-canvas",
+        category: "Canvas Prints",
         artwork_url: unsplash_download_url("UweNcthlmDc"),
-        product_type: :poster,
+        product_type: :canvas,
         price: 2400
       },
       %{
-        name: "Ocean Waves Art Print",
-        slug: "ocean-waves-print",
-        category: "Art Prints",
+        name: "Ocean Waves Canvas",
+        slug: "ocean-waves-canvas",
+        category: "Canvas Prints",
         artwork_url: unsplash_download_url("XRhUTUVuXAE"),
-        product_type: :poster,
+        product_type: :canvas,
         price: 2400
       },
       %{
-        name: "Wildflower Meadow Art Print",
-        slug: "wildflower-meadow-print",
-        category: "Art Prints",
+        name: "Wildflower Meadow Canvas",
+        slug: "wildflower-meadow-canvas",
+        category: "Canvas Prints",
         artwork_url: unsplash_download_url("QvjL4y7SF9k"),
-        product_type: :poster,
+        product_type: :canvas,
         price: 2400
       },
       %{
-        name: "Geometric Abstract Art Print",
-        slug: "geometric-abstract-print",
-        category: "Art Prints",
+        name: "Geometric Abstract Canvas",
+        slug: "geometric-abstract-canvas",
+        category: "Canvas Prints",
         artwork_url: unsplash_download_url("-6GvTDpkkPU"),
-        product_type: :poster,
+        product_type: :canvas,
         price: 2800
       },
       %{
-        name: "Botanical Illustration Print",
-        slug: "botanical-illustration-print",
-        category: "Art Prints",
+        name: "Botanical Illustration Canvas",
+        slug: "botanical-illustration-canvas",
+        category: "Canvas Prints",
         artwork_url: unsplash_download_url("FNtNIDQWUZY"),
-        product_type: :poster,
+        product_type: :canvas,
         price: 2400
       },
       %{
@@ -157,25 +157,20 @@ defmodule SimpleshopTheme.Mockups.Generator do
   """
   def blueprint_config do
     %{
-      # Search terms matched to Printify's actual blueprint titles (partial match)
-      poster: %{blueprint_id: nil, print_provider_id: nil, search_term: "Matte Posters"},
-      tshirt: %{blueprint_id: nil, print_provider_id: nil, search_term: "Softstyle T-Shirt"},
-      hoodie: %{blueprint_id: nil, print_provider_id: nil, search_term: "Pullover Hoodie"},
-      tote: %{blueprint_id: nil, print_provider_id: nil, search_term: "Cotton Tote Bag"},
-      mug: %{blueprint_id: nil, print_provider_id: nil, search_term: "Mug 11oz"},
-      cushion: %{
-        blueprint_id: nil,
-        print_provider_id: nil,
-        search_term: "Spun Polyester Square Pillow"
-      },
-      blanket: %{blueprint_id: nil, print_provider_id: nil, search_term: "Sherpa Fleece Blanket"},
-      notebook: %{
-        blueprint_id: nil,
-        print_provider_id: nil,
-        search_term: "Hardcover Journal Matte"
-      },
-      phone_case: %{blueprint_id: nil, print_provider_id: nil, search_term: "Tough Phone Cases"},
-      laptop_sleeve: %{blueprint_id: nil, print_provider_id: nil, search_term: "Laptop Sleeve"}
+      # Search terms matched to Printify's actual blueprint titles (partial match).
+      # preferred_provider_id selects a UK-based provider where available:
+      #   29 = Monster Digital (UK) — apparel, mugs
+      #   72 = Print Clever (UK) — canvas prints
+      canvas: %{search_term: "Satin Canvas, Stretched", preferred_provider_id: 72},
+      tshirt: %{search_term: "Softstyle T-Shirt", preferred_provider_id: 29},
+      hoodie: %{search_term: "Heavy Blend™ Hooded Sweatshirt", preferred_provider_id: 29},
+      tote: %{search_term: "Cotton Tote Bag", preferred_provider_id: nil},
+      mug: %{search_term: "Ceramic Mug", preferred_provider_id: 29},
+      cushion: %{search_term: "Spun Polyester Square Pillow", preferred_provider_id: nil},
+      blanket: %{search_term: "Sherpa Fleece Blanket", preferred_provider_id: nil},
+      notebook: %{search_term: "Hardcover Journal Matte", preferred_provider_id: nil},
+      phone_case: %{search_term: "Tough Phone Cases", preferred_provider_id: nil},
+      laptop_sleeve: %{search_term: "Laptop Sleeve", preferred_provider_id: nil}
     }
   end
 
@@ -210,13 +205,19 @@ defmodule SimpleshopTheme.Mockups.Generator do
 
   @doc """
   Find a suitable print provider for a blueprint.
-  Prefers providers with good ratings and reasonable pricing.
+
+  When `preferred_provider_id` is given, uses that provider if available
+  for the blueprint. Falls back to the first provider otherwise.
   """
-  def find_print_provider(blueprint_id) do
+  def find_print_provider(blueprint_id, preferred_provider_id \\ nil) do
     case Client.get_print_providers(blueprint_id) do
       {:ok, providers} when is_list(providers) and providers != [] ->
-        # Just pick the first provider for simplicity
-        {:ok, hd(providers)}
+        provider =
+          if preferred_provider_id do
+            Enum.find(providers, fn p -> p["id"] == preferred_provider_id end)
+          end
+
+        {:ok, provider || hd(providers)}
 
       {:ok, []} ->
         {:error, :no_providers}
@@ -384,6 +385,26 @@ defmodule SimpleshopTheme.Mockups.Generator do
     end)
   end
 
+  @doc """
+  Deletes all products from the Printify shop.
+  Returns the number of products deleted.
+  """
+  def purge_all_products(shop_id) do
+    case Client.list_products(shop_id) do
+      {:ok, %{"data" => products}} when is_list(products) ->
+        Enum.each(products, fn p ->
+          IO.puts("  Deleting: #{p["title"]} (#{p["id"]})")
+          Client.delete_product(shop_id, p["id"])
+          Process.sleep(200)
+        end)
+
+        length(products)
+
+      _ ->
+        0
+    end
+  end
+
   @doc """
   Generate mockups for all products.
   """
@@ -450,7 +471,7 @@ defmodule SimpleshopTheme.Mockups.Generator do
     with {:ok, blueprint} <- find_blueprint(config.search_term),
          blueprint_id = blueprint["id"],
          _ = IO.puts("  Found blueprint: #{blueprint["title"]} (#{blueprint_id})"),
-         {:ok, provider} <- find_print_provider(blueprint_id),
+         {:ok, provider} <- find_print_provider(blueprint_id, config[:preferred_provider_id]),
          provider_id = provider["id"],
          _ = IO.puts("  Using provider: #{provider["title"]} (#{provider_id})"),
          {:ok, variants} <- get_variant_info(blueprint_id, provider_id),