Add mode field to snippet blob in GraphQL

app/graphql/types/snippets/blob_type.rb

@@ -40,6 +40,10 @@ module Types
       field :rich_viewer, type: Types::Snippets::BlobViewerType,
             description: 'Blob content rich viewer',
             null: true
+
+      field :mode, type: GraphQL::STRING_TYPE,
+            description: 'Blob mode',
+            null: true
     end
     # rubocop: enable Graphql/AuthorizeTypes
   end

changelogs/unreleased/fj-add-mode-field-to-snippet-blob-type.yml

+---
+title: Add mode field to snippet blob in GraphQL
+merge_request: 24157
+author:
+type: changed

doc/api/graphql/reference/gitlab_schema.graphql

@@ -6641,6 +6641,11 @@ type SnippetBlob {
   """
   highlightedData: String
 
+  """
+  Blob mode
+  """
+  mode: String
+
   """
   Blob name
   """

doc/api/graphql/reference/gitlab_schema.json

@@ -7171,6 +7171,20 @@
               "isDeprecated": false,
               "deprecationReason": null
             },
+            {
+              "name": "mode",
+              "description": "Blob mode",
+              "args": [
+
+              ],
+              "type": {
+                "kind": "SCALAR",
+                "name": "String",
+                "ofType": null
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
             {
               "name": "name",
               "description": "Blob name",

doc/api/graphql/reference/index.md

@@ -1063,6 +1063,7 @@ Represents the snippet blob
 | ---   |  ---- | ----------  |
 | `binary` | Boolean! | Shows whether the blob is binary |
 | `highlightedData` | String | Blob highlighted data |
+| `mode` | String | Blob mode |
 | `name` | String | Blob name |
 | `path` | String | Blob path |
 | `rawPath` | String! | Blob raw content endpoint path |

spec/graphql/types/snippets/blob_type_spec.rb

@@ -6,7 +6,8 @@ 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]
+                       :simple_viewer, :rich_viewer,
+                       :mode]
 
     is_expected.to have_graphql_fields(*expected_fields)
   end