Added commit type to tree GraphQL type

4 files changed, 47 insertions, 1 deletions

diff --git a/app/graphql/types/commit_type.rb b/app/graphql/types/commit_type.rb
new file mode 100644
index 00000000000..d73dd73affd
--- /dev/null
+++ b/app/graphql/types/commit_type.rb
@@ -0,0 +1,30 @@
+# frozen_string_literal: true
+
+module Types
+  class CommitType < BaseObject
+    graphql_name 'Commit'
+
+    authorize :download_code
+
+    present_using CommitPresenter
+
+    field :id, type: GraphQL::ID_TYPE, null: false
+    field :sha, type: GraphQL::STRING_TYPE, null: false
+    field :title, type: GraphQL::STRING_TYPE, null: true
+    field :description, type: GraphQL::STRING_TYPE, null: true
+    field :message, type: GraphQL::STRING_TYPE, null: true
+    field :authored_date, type: Types::TimeType, null: true
+    field :web_url, type: GraphQL::STRING_TYPE, null: false
+
+    # models/commit lazy loads the author by email
+    field :author, type: Types::UserType, null: true
+
+    field :latest_pipeline,
+          type: Types::Ci::PipelineType,
+          null: true,
+          description: "Latest pipeline for this commit",
+          resolve: -> (obj, ctx, args) do
+            Gitlab::Graphql::Loaders::PipelineForShaLoader.new(obj.project, obj.sha).find_last
+          end
+  end
+end
diff --git a/app/graphql/types/tree/tree_type.rb b/app/graphql/types/tree/tree_type.rb
index 1ee93ed9542..cbc448a0695 100644
--- a/app/graphql/types/tree/tree_type.rb
+++ b/app/graphql/types/tree/tree_type.rb
@@ -4,6 +4,11 @@ module Types
     class TreeType < BaseObject
       graphql_name 'Tree'
 
+      # Complexity 10 as it triggers a Gitaly call on each render
+      field :last_commit, Types::CommitType, null: true, complexity: 10, resolve: -> (tree, args, ctx) do
+        tree.repository.last_commit_for_path(tree.sha, tree.path)
+      end
+
       field :trees, Types::Tree::TreeEntryType.connection_type, null: false, resolve: -> (obj, args, ctx) do
         Gitlab::Graphql::Representation::TreeEntry.decorate(obj.trees, obj.repository)
       end
diff --git a/app/models/ci/pipeline.rb b/app/models/ci/pipeline.rb
index 3727a9861aa..fd5aa216174 100644
--- a/app/models/ci/pipeline.rb
+++ b/app/models/ci/pipeline.rb
@@ -295,6 +295,11 @@ module Ci
       end
     end
 
+    def self.latest_for_shas(shas)
+      max_id_per_sha = for_sha(shas).group(:sha).select("max(id)")
+      where(id: max_id_per_sha)
+    end
+
     def self.latest_successful_ids_per_project
       success.group(:project_id).select('max(id) as id')
     end
diff --git a/app/presenters/commit_presenter.rb b/app/presenters/commit_presenter.rb
index 05adbe1d4f5..fc9853733c1 100644
--- a/app/presenters/commit_presenter.rb
+++ b/app/presenters/commit_presenter.rb
@@ -1,6 +1,8 @@
 # frozen_string_literal: true
 
-class CommitPresenter < Gitlab::View::Presenter::Simple
+class CommitPresenter < Gitlab::View::Presenter::Delegated
+  include GlobalID::Identification
+
   presents :commit
 
   def status_for(ref)
@@ -10,4 +12,8 @@ class CommitPresenter < Gitlab::View::Presenter::Simple
   def any_pipelines?
     can?(current_user, :read_pipeline, commit.project) && commit.pipelines.any?
   end
+
+  def web_url
+    Gitlab::UrlBuilder.new(commit).url
+  end
 end