fixes after review

app/models/commit.rb

@@ -135,7 +135,7 @@ class Commit
     description.present?
   end
 
-  def hook_attrs(with_changed_files = false)
+  def hook_attrs(with_changed_files: false)
     path_with_namespace = project.path_with_namespace
 
     data = {
@@ -150,11 +150,7 @@ class Commit
     }
 
     if with_changed_files
-      data.merge!({
+      data.merge!(repo_changes)
-        added: repo_changes[:added],
-        modified: repo_changes[:modified],
-        removed: repo_changes[:removed]
-      })
     end
 
     data
@@ -212,18 +208,15 @@ class Commit
   def repo_changes
     changes = { added: [], modified: [], removed: [] }
 
-    if diffs.any?
     diffs.each do |diff|
-        case true
+      if diff.deleted_file
-        when diff.deleted_file
         changes[:removed] << diff.old_path
-        when diff.renamed_file, diff.new_file
+      elsif diff.renamed_file || diff.new_file
         changes[:added] << diff.new_path
       else
         changes[:modified] << diff.new_path
       end
     end
-    end
 
     changes
   end

lib/gitlab/push_data_builder.rb

@@ -31,7 +31,7 @@ module Gitlab
         # For performance purposes maximum 20 latest commits
         # will be passed as post receive hook data.
         commit_attrs = commits_limited.map do |commit|
-          commit.hook_attrs(true)
+          commit.hook_attrs(with_changed_files: true)
         end
 
         type = Gitlab::Git.tag_ref?(ref) ? "tag_push" : "push"

spec/models/commit_spec.rb

@@ -102,7 +102,7 @@ eos
   end
 
   describe '#hook_attrs' do
-    let(:data) { commit.hook_attrs(true) }
+    let(:data) { commit.hook_attrs(with_changed_files: true) }
 
     it { expect(data).to be_a(Hash) }
     it { expect(data[:message]).to include('Add submodule from gitlab.com') }