Support locale for snippets

Author: pezholio

engines/block_preview/app/controllers/block_preview/preview_controller.rb

@@ -17,6 +17,7 @@ def show
         host_content_id,
         state: params[:state].presence || "published",
         block: @block,
+        locale: params[:locale],
       )
 
       if @current_tab == "preview"

engines/block_preview/app/model/block_preview/snippet.rb

@@ -1,8 +1,8 @@
 class BlockPreview::Snippet
   class << self
-    def for_content_id(content_id, state:, block:)
+    def for_content_id(content_id, state:, block:, locale:)
       diff = BlockPreview::ContentDiff.new(
-        html_snippet(content_id, state),
+        html_snippet(content_id, state, locale),
         block,
       )
       from_html(diff.to_s, block)
@@ -30,8 +30,8 @@ def from_html(html, block)
 
   private
 
-    def html_snippet(content_id, state)
-      publishing_api_response = Public::Services.publishing_api.get_content(content_id)
+    def html_snippet(content_id, state, locale)
+      publishing_api_response = Public::Services.publishing_api.get_content(content_id, locale:)
       content_store = state == "published" ? Public::Services.content_store : Public::Services.draft_content_store
       content_store_response = content_store.content_item(publishing_api_response["base_path"])
       html = if %w[guide travel_advice].include?(content_store_response["document_type"])

engines/block_preview/spec/unit/app/controllers/preview_controller_spec.rb

@@ -94,7 +94,7 @@
         end
 
         it "extracts snippets from the preview html" do
-          expect(BlockPreview::Snippet).to have_received(:for_content_id).with(host_content_id, state: state, block: mock_block)
+          expect(BlockPreview::Snippet).to have_received(:for_content_id).with(host_content_id, state: state, block: mock_block, locale: locale)
         end
 
         it "assigns the current tab" do

engines/block_preview/spec/unit/app/models/snippet_spec.rb

@@ -11,7 +11,7 @@
 
     before do
       allow(Public::Services.publishing_api).to receive(:get_content)
-        .with(content_id)
+        .with(content_id, locale: "en")
         .and_return(publishing_api_response)
       allow(described_class).to receive(:from_html).with(diff_output, block).and_return(snippets)
       allow(BlockPreview::ContentDiff).to receive(:new).and_return(diff)
@@ -32,7 +32,7 @@
         expect(received_block).to be(block)
       }.and_return(diff)
 
-      expect(described_class.for_content_id(content_id, state: "published", block:)).to eq(snippets)
+      expect(described_class.for_content_id(content_id, state: "published", block:, locale: "en")).to eq(snippets)
     end
 
     it "fetches draft content from the draft store and joins guide parts into a single fragment" do
@@ -55,7 +55,7 @@
         expect(html_fragment.to_html).to include("<p>Part two</p>")
       }.and_return(diff)
 
-      described_class.for_content_id(content_id, state: "draft", block:)
+      described_class.for_content_id(content_id, state: "draft", block:, locale: "en")
     end
   end