6 files changed, 106 insertions, 1 deletions
diff --git a/app/serializers/analytics_stage_entity.rb b/app/serializers/analytics_stage_entity.rb
index 564612202b5..3e355a13e06 100644
--- a/app/serializers/analytics_stage_entity.rb
+++ b/app/serializers/analytics_stage_entity.rb
@@ -7,6 +7,7 @@ class AnalyticsStageEntity < Grape::Entity
   expose :description
 
   expose :median, as: :value do |stage|
-    stage.median && !stage.median.zero? ? distance_of_time_in_words(stage.median) : nil
+    # median returns a BatchLoader instance which we first have to unwrap by using to_i
+    !stage.median.to_i.zero? ? distance_of_time_in_words(stage.median) : nil
   end
 end
diff --git a/app/serializers/cluster_application_entity.rb b/app/serializers/cluster_application_entity.rb
index 3f9a275ad08..b22a0b666ef 100644
--- a/app/serializers/cluster_application_entity.rb
+++ b/app/serializers/cluster_application_entity.rb
@@ -2,4 +2,5 @@ class ClusterApplicationEntity < Grape::Entity
   expose :name
   expose :status_name, as: :status
   expose :status_reason
+  expose :external_ip, if: -> (e, _) { e.respond_to?(:external_ip) }
 end
diff --git a/app/serializers/diff_file_entity.rb b/app/serializers/diff_file_entity.rb
new file mode 100644
index 00000000000..6e68d275047
--- /dev/null
+++ b/app/serializers/diff_file_entity.rb
@@ -0,0 +1,41 @@
+class DiffFileEntity < Grape::Entity
+  include DiffHelper
+  include SubmoduleHelper
+  include BlobHelper
+  include IconsHelper
+  include ActionView::Helpers::TagHelper
+
+  expose :submodule?, as: :submodule
+
+  expose :submodule_link do |diff_file|
+    submodule_links(diff_file.blob, diff_file.content_sha, diff_file.repository).first
+  end
+
+  expose :blob_path do |diff_file|
+    diff_file.blob.path
+  end
+
+  expose :blob_icon do |diff_file|
+    blob_icon(diff_file.b_mode, diff_file.file_path)
+  end
+
+  expose :file_path
+  expose :deleted_file?, as: :deleted_file
+  expose :renamed_file?, as: :renamed_file
+  expose :old_path
+  expose :new_path
+  expose :mode_changed?, as: :mode_changed
+  expose :a_mode
+  expose :b_mode
+  expose :text?, as: :text
+
+  expose :old_path_html do |diff_file|
+    old_path = mark_inline_diffs(diff_file.old_path, diff_file.new_path)
+    old_path
+  end
+
+  expose :new_path_html do |diff_file|
+    _, new_path = mark_inline_diffs(diff_file.old_path, diff_file.new_path)
+    new_path
+  end
+end
diff --git a/app/serializers/discussion_entity.rb b/app/serializers/discussion_entity.rb
index 0a92e3f8167..bbbcf6a97c1 100644
--- a/app/serializers/discussion_entity.rb
+++ b/app/serializers/discussion_entity.rb
@@ -7,4 +7,42 @@ class DiscussionEntity < Grape::Entity
   expose :notes, using: NoteEntity
 
   expose :individual_note?, as: :individual_note
+  expose :resolvable?, as: :resolvable
+  expose :resolved?, as: :resolved
+  expose :resolve_path, if: -> (d, _) { d.resolvable? } do |discussion|
+    resolve_project_merge_request_discussion_path(discussion.project, discussion.noteable, discussion.id)
+  end
+  expose :resolve_with_issue_path do |discussion|
+    new_project_issue_path(discussion.project, merge_request_to_resolve_discussions_of: discussion.noteable.iid, discussion_to_resolve: discussion.id)
+  end
+
+  expose :diff_file, using: DiffFileEntity, if: -> (d, _) { defined? d.diff_file }
+
+  expose :diff_discussion?, as: :diff_discussion
+
+  expose :truncated_diff_lines, if: -> (d, _) { (defined? d.diff_file) && d.diff_file.text? } do |discussion|
+    options[:context].render_to_string(
+      partial: "projects/diffs/line",
+      collection: discussion.truncated_diff_lines,
+      as: :line,
+      locals: { diff_file: discussion.diff_file,
+                discussion_expanded: true,
+                plain: true },
+      layout: false,
+      formats: [:html]
+    )
+  end
+
+  expose :image_diff_html, if: -> (d, _) { defined? d.diff_file } do |discussion|
+    diff_file = discussion.diff_file
+    partial = diff_file.new_file? || diff_file.deleted_file? ? 'single_image_diff' : 'replaced_image_diff'
+    options[:context].render_to_string(
+      partial: "projects/diffs/#{partial}",
+      locals: { diff_file: diff_file,
+                position: discussion.position.to_json,
+                click_to_comment: false },
+      layout: false,
+      formats: [:html]
+    )
+  end
 end
diff --git a/app/serializers/merge_request_widget_entity.rb b/app/serializers/merge_request_widget_entity.rb
index fbfe480503b..4e8ef320af2 100644
--- a/app/serializers/merge_request_widget_entity.rb
+++ b/app/serializers/merge_request_widget_entity.rb
@@ -115,6 +115,14 @@ class MergeRequestWidgetEntity < IssuableEntity
     expose :can_cherry_pick_on_current_merge_request do |merge_request|
       presenter(merge_request).can_cherry_pick_on_current_merge_request?
     end
+
+    expose :can_create_note do |issue|
+      can?(request.current_user, :create_note, issue.project)
+    end
+
+    expose :can_update do |issue|
+      can?(request.current_user, :update_issue, issue)
+    end
   end
 
   # Paths
@@ -189,6 +197,10 @@ class MergeRequestWidgetEntity < IssuableEntity
     end
   end
 
+  expose :create_note_path do |merge_request|
+    project_notes_path(merge_request.project, target_type: 'merge_request', target_id: merge_request.id)
+  end
+
   expose :commit_change_content_path do |merge_request|
     commit_change_content_project_merge_request_path(merge_request.project, merge_request)
   end
diff --git a/app/serializers/note_entity.rb b/app/serializers/note_entity.rb
index 7d50e0ff10d..4ccf0bca476 100644
--- a/app/serializers/note_entity.rb
+++ b/app/serializers/note_entity.rb
@@ -23,6 +23,10 @@ class NoteEntity < API::Entities::Note
     end
   end
 
+  expose :resolved?, as: :resolved
+  expose :resolvable?, as: :resolvable
+  expose :resolved_by, using: NoteUserEntity
+
   expose :system_note_icon_name, if: -> (note, _) { note.system? } do |note|
     SystemNoteHelper.system_note_icon_name(note)
   end
@@ -53,6 +57,14 @@ class NoteEntity < API::Entities::Note
     end
   end
 
+  expose :resolve_path, if: -> (note, _) { note.part_of_discussion? && note.resolvable? } do |note|
+    resolve_project_merge_request_discussion_path(note.project, note.noteable, note.discussion_id)
+  end
+
+  expose :resolve_with_issue_path, if: -> (note, _) { note.part_of_discussion? && note.resolvable? } do |note|
+    new_project_issue_path(note.project, merge_request_to_resolve_discussions_of: note.noteable.iid, discussion_to_resolve: note.discussion_id)
+  end
+
   expose :attachment, using: NoteAttachmentEntity, if: -> (note, _) { note.attachment? }
   expose :delete_attachment_path, if: -> (note, _) { note.attachment? } do |note|
     delete_attachment_project_note_path(note.project, note)