Add plain_highlighted_data field to SnippetBlobType

app/graphql/types/snippets/blob_type.rb

@@ -12,6 +12,10 @@ module Types
             description: 'Blob highlighted data',
             null: true
 
+      field :plain_highlighted_data, GraphQL::STRING_TYPE,
+            description: 'Blob plain highlighted data',
+            null: true
+
       field :raw_path, GraphQL::STRING_TYPE,
             description: 'Blob raw content endpoint path',
             null: false

app/presenters/snippet_blob_presenter.rb

@@ -4,11 +4,13 @@ class SnippetBlobPresenter < BlobPresenter
   def highlighted_data
     return if blob.binary?
 
-    if blob.rich_viewer&.partial_name == 'markup'
-      blob.rendered_markup
-    else
-      highlight
-    end
+    highlight(plain: false)
+  end
+
+  def plain_highlighted_data
+    return if blob.binary?
+
+    highlight(plain: true)
   end
 
   def raw_path

changelogs/unreleased/fj-add-plain-data-field-to-snippet-blob-type-endpoint.yml

+---
+title: Add plain_highlighted_data field to SnippetBlobType
+merge_request: 24856
+author:
+type: changed

doc/api/graphql/reference/gitlab_schema.graphql

@@ -6772,6 +6772,11 @@ type SnippetBlob {
   """
   path: String
 
+  """
+  Blob plain highlighted data
+  """
+  plainHighlightedData: String
+
   """
   Blob raw content endpoint path
   """

doc/api/graphql/reference/gitlab_schema.json

@@ -7612,6 +7612,20 @@
               "isDeprecated": false,
               "deprecationReason": null
             },
+            {
+              "name": "plainHighlightedData",
+              "description": "Blob plain highlighted data",
+              "args": [
+
+              ],
+              "type": {
+                "kind": "SCALAR",
+                "name": "String",
+                "ofType": null
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
             {
               "name": "rawPath",
               "description": "Blob raw content endpoint path",

doc/api/graphql/reference/index.md

@@ -1070,6 +1070,7 @@ Represents the snippet blob
 | `mode` | String | Blob mode |
 | `name` | String | Blob name |
 | `path` | String | Blob path |
+| `plainHighlightedData` | String | Blob plain highlighted data |
 | `rawPath` | String! | Blob raw content endpoint path |
 | `richViewer` | SnippetBlobViewer | Blob content rich viewer |
 | `simpleViewer` | SnippetBlobViewer! | Blob content simple viewer |

spec/graphql/types/snippets/blob_type_spec.rb

@@ -4,10 +4,9 @@ require 'spec_helper'
 
 describe GitlabSchema.types['SnippetBlob'] do
   it 'has the correct fields' do
-    expected_fields = [:highlighted_data, :raw_path,
-                       :size, :binary, :name, :path,
-                       :simple_viewer, :rich_viewer,
-                       :mode]
+    expected_fields = [:highlighted_data, :plain_highlighted_data,
+                       :raw_path, :size, :binary, :name, :path,
+                       :simple_viewer, :rich_viewer, :mode]
 
     is_expected.to have_graphql_fields(*expected_fields)
   end

spec/presenters/snippet_blob_presenter_spec.rb

@@ -18,7 +18,7 @@ describe SnippetBlobPresenter do
       snippet.file_name = 'test.md'
       snippet.content = '*foo*'
 
-      expect(subject).to eq '<p data-sourcepos="1:1-1:5" dir="auto"><em>foo</em></p>'
+      expect(subject).to eq '<span id="LC1" class="line" lang="markdown"><span class="ge">*foo*</span></span>'
     end
 
     it 'returns syntax highlighted content' do
@@ -33,7 +33,41 @@ describe SnippetBlobPresenter do
       snippet.file_name = 'test'
       snippet.content = 'foo'
 
-      expect(described_class.new(snippet.blob).highlighted_data).to eq '<span id="LC1" class="line" lang="plaintext">foo</span>'
+      expect(subject).to eq '<span id="LC1" class="line" lang="plaintext">foo</span>'
+    end
+  end
+
+  describe '#plain_highlighted_data' do
+    let(:snippet) { build(:personal_snippet) }
+
+    subject { described_class.new(snippet.blob).plain_highlighted_data }
+
+    it 'returns nil when the snippet blob is binary' do
+      allow(snippet.blob).to receive(:binary?).and_return(true)
+
+      expect(subject).to be_nil
+    end
+
+    it 'returns plain content when snippet file is markup' do
+      snippet.file_name = 'test.md'
+      snippet.content = '*foo*'
+
+      expect(subject).to eq '<span id="LC1" class="line" lang="">*foo*</span>'
+    end
+
+    it 'returns plain syntax content' do
+      snippet.file_name = 'test.rb'
+      snippet.content = 'class Foo;end'
+
+      expect(subject)
+        .to eq '<span id="LC1" class="line" lang="">class Foo;end</span>'
+    end
+
+    it 'returns plain text highlighted content' do
+      snippet.file_name = 'test'
+      snippet.content = 'foo'
+
+      expect(subject).to eq '<span id="LC1" class="line" lang="">foo</span>'
     end
   end