add legal page editor integration and media library polish

Legal pages (privacy, delivery, terms) now auto-populate content from
shop settings on mount, show auto-generated vs customised badges, and
have a regenerate button. Theme editor gains alt text fields for logo,
header, and icon images. Image picker in page builder now has an upload
button and alt text warning badges. Clearing unused image references
shows an orphan info flash.

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

lib/berrypod_web/live/admin/pages/editor.ex

@@ -1,7 +1,7 @@
 defmodule BerrypodWeb.Admin.Pages.Editor do
   use BerrypodWeb, :live_view
 
-  alias Berrypod.{Media, Pages}
+  alias Berrypod.{LegalPages, Media, Pages}
   alias Berrypod.Pages.{BlockEditor, BlockTypes, Page}
   alias Berrypod.Products.ProductImage
   alias Berrypod.Theme.{Fonts, PreviewData}
@@ -41,7 +41,98 @@ defmodule BerrypodWeb.Admin.Pages.Editor do
      |> assign(:image_picker_field_key, nil)
      |> assign(:image_picker_images, [])
      |> assign(:image_picker_search, "")
-     |> assign(:is_custom_page, !Page.system_slug?(slug))}
+     |> assign(:is_custom_page, !Page.system_slug?(slug))
+     |> assign(:is_legal_page, LegalPages.legal_slug?(slug))
+     |> allow_upload(:image_picker_upload,
+       accept: ~w(.png .jpg .jpeg .webp .svg),
+       max_entries: 1,
+       max_file_size: 5_000_000,
+       auto_upload: true,
+       progress: &handle_image_picker_upload/3
+     )
+     |> assign_content_source(slug, page.blocks)}
+  end
+
+  defp handle_image_picker_upload(:image_picker_upload, entry, socket) do
+    if entry.done? do
+      consume_uploaded_entries(socket, :image_picker_upload, fn %{path: path}, entry ->
+        case Media.upload_from_entry(path, entry, "media") do
+          {:ok, image} -> {:ok, image}
+          {:error, _} = error -> error
+        end
+      end)
+      |> case do
+        [{:ok, image}] ->
+          block_id = socket.assigns.image_picker_block_id
+          field_key = socket.assigns.image_picker_field_key
+
+          case BlockEditor.update_settings(socket.assigns.blocks, block_id, %{
+                 field_key => image.id
+               }) do
+            {:ok, new_blocks} ->
+              {:noreply,
+               socket
+               |> apply_mutation(new_blocks, "Image uploaded and selected")
+               |> assign(:image_picker_block_id, nil)
+               |> assign(:image_picker_field_key, nil)}
+
+            :noop ->
+              {:noreply, socket}
+          end
+
+        _ ->
+          {:noreply, put_flash(socket, :error, "Upload failed")}
+      end
+    else
+      {:noreply, socket}
+    end
+  end
+
+  # Determines whether legal page content is auto-generated or customised.
+  # For non-legal pages, content_source is nil (not shown).
+  # On mount, auto-populates empty legal pages with generated content.
+  defp assign_content_source(socket, slug, blocks) do
+    if LegalPages.legal_slug?(slug) do
+      current_content = get_content_body_text(blocks)
+      fresh_content = LegalPages.regenerate_legal_content(slug)
+
+      cond do
+        # Empty content — auto-populate on mount
+        current_content == "" ->
+          blocks = populate_content_body(blocks, fresh_content)
+
+          socket
+          |> assign(:blocks, blocks)
+          |> assign(:content_source, :auto)
+
+        # Content matches generated — it's auto
+        current_content == fresh_content ->
+          assign(socket, :content_source, :auto)
+
+        # Content differs — it's been customised
+        true ->
+          assign(socket, :content_source, :custom)
+      end
+    else
+      assign(socket, :content_source, nil)
+    end
+  end
+
+  defp populate_content_body(blocks, content) do
+    Enum.map(blocks, fn
+      %{"type" => "content_body", "settings" => settings} = block ->
+        %{block | "settings" => Map.put(settings || %{}, "content", content)}
+
+      block ->
+        block
+    end)
+  end
+
+  defp get_content_body_text(blocks) do
+    case Enum.find(blocks, &(&1["type"] == "content_body")) do
+      %{"settings" => %{"content" => content}} when is_binary(content) -> content
+      _ -> ""
+    end
   end
 
   # ── Block manipulation events ────────────────────────────────────
@@ -101,7 +192,17 @@ defmodule BerrypodWeb.Admin.Pages.Editor do
 
     case BlockEditor.update_settings(socket.assigns.blocks, block_id, new_settings) do
       {:ok, new_blocks} ->
-        {:noreply, apply_mutation(socket, new_blocks, "Settings updated")}
+        socket = apply_mutation(socket, new_blocks, "Settings updated")
+
+        # Update content source badge if a legal page content block was edited
+        socket =
+          if socket.assigns.is_legal_page do
+            assign_content_source(socket, socket.assigns.slug, new_blocks)
+          else
+            socket
+          end
+
+        {:noreply, socket}
 
       :noop ->
         {:noreply, socket}
@@ -202,9 +303,30 @@ defmodule BerrypodWeb.Admin.Pages.Editor do
         %{"block-id" => block_id, "field" => field_key},
         socket
       ) do
+    # Grab the old image_id before clearing
+    old_image_id =
+      case Enum.find(socket.assigns.blocks, &(&1["id"] == block_id)) do
+        %{"settings" => settings} -> settings[field_key]
+        _ -> nil
+      end
+
     case BlockEditor.update_settings(socket.assigns.blocks, block_id, %{field_key => ""}) do
       {:ok, new_blocks} ->
-        {:noreply, apply_mutation(socket, new_blocks, "Image cleared")}
+        socket = apply_mutation(socket, new_blocks, "Image cleared")
+
+        socket =
+          if is_binary(old_image_id) && old_image_id != "" &&
+               Media.find_usages(old_image_id) == [] do
+            put_flash(
+              socket,
+              :info,
+              "Image removed — it's no longer used anywhere and can be deleted from the media library"
+            )
+          else
+            socket
+          end
+
+        {:noreply, socket}
 
       :noop ->
         {:noreply, socket}
@@ -267,6 +389,29 @@ defmodule BerrypodWeb.Admin.Pages.Editor do
     end
   end
 
+  def handle_event("regenerate_legal", _params, socket) do
+    slug = socket.assigns.slug
+    content = LegalPages.regenerate_legal_content(slug)
+
+    case Enum.find(socket.assigns.blocks, &(&1["type"] == "content_body")) do
+      %{"id" => block_id} ->
+        case BlockEditor.update_settings(socket.assigns.blocks, block_id, %{"content" => content}) do
+          {:ok, new_blocks} ->
+            {:noreply,
+             socket
+             |> apply_mutation(new_blocks, "Legal content regenerated")
+             |> assign(:content_source, :auto)
+             |> put_flash(:info, "Content regenerated from current settings")}
+
+          :noop ->
+            {:noreply, socket}
+        end
+
+      nil ->
+        {:noreply, put_flash(socket, :error, "No content block found on this page")}
+    end
+  end
+
   def handle_event("reset_defaults", _params, socket) do
     slug = socket.assigns.slug
     :ok = Pages.reset_page(slug)
@@ -365,6 +510,14 @@ defmodule BerrypodWeb.Admin.Pages.Editor do
           >
             <.icon name="hero-arrow-uturn-right" class="size-4" />
           </button>
+          <button
+            :if={@is_legal_page}
+            phx-click="regenerate_legal"
+            data-confirm="Regenerate this page's content from your current shop settings? Any manual edits will be replaced."
+            class="admin-btn admin-btn-sm admin-btn-ghost"
+          >
+            <.icon name="hero-arrow-path" class="size-4" /> Regenerate
+          </button>
           <button
             :if={!@is_custom_page}
             phx-click="reset_defaults"
@@ -388,10 +541,18 @@ defmodule BerrypodWeb.Admin.Pages.Editor do
         {if @live_region_message, do: @live_region_message}
       </div>
 
-      <%!-- Unsaved changes indicator --%>
-      <p :if={@dirty} class="admin-badge admin-badge-warning mt-4">
-        Unsaved changes
-      </p>
+      <%!-- Status badges --%>
+      <div class="mt-4 flex gap-2 flex-wrap">
+        <p :if={@dirty} class="admin-badge admin-badge-warning">
+          Unsaved changes
+        </p>
+        <p :if={@content_source == :auto} class="admin-badge admin-badge-info">
+          Auto-generated from settings
+        </p>
+        <p :if={@content_source == :custom} class="admin-badge">
+          Customised
+        </p>
+      </div>
 
       <div class="page-editor-container">
         <%!-- Editor pane --%>
@@ -452,6 +613,7 @@ defmodule BerrypodWeb.Admin.Pages.Editor do
         :if={@image_picker_block_id}
         images={@image_picker_images}
         search={@image_picker_search}
+        upload={@uploads.image_picker_upload}
       />
     </div>
     """