Show modified and added public paths in MR

2 files changed, 31 insertions, 0 deletions

diff --git a/app/models/environment_status.rb b/app/models/environment_status.rb
index cae0d396089..5ff3acc0e58 100644
--- a/app/models/environment_status.rb
+++ b/app/models/environment_status.rb
@@ -24,4 +24,33 @@ class EnvironmentStatus
   def deployed_at
     deployment&.created_at
   end
+
+  def changes
+    sha = merge_request.diff_head_sha
+    return [] if project.route_map_for(sha).nil?
+
+    changed_files.map { |file| build_change(file, sha) }.compact
+  end
+
+  def changed_files
+    merge_request.merge_request_diff
+      .merge_request_diff_files.where(deleted_file: false)
+  end
+
+  private
+
+  PAGE_EXTENSIONS = /\A\.(s?html?|php|asp|cgi|pl)\z/i.freeze
+
+  def build_change(file, sha)
+    public_path = project.public_path_for_source_path(file.new_path, sha)
+    return if public_path.nil?
+
+    ext = File.extname(public_path)
+    return if ext.present? && ext !~ PAGE_EXTENSIONS
+
+    {
+      path: public_path,
+      external_url: environment.external_url_for(file.new_path, sha)
+    }
+  end
 end
diff --git a/app/serializers/environment_status_entity.rb b/app/serializers/environment_status_entity.rb
index 62152dd1d40..3dfa4f204c9 100644
--- a/app/serializers/environment_status_entity.rb
+++ b/app/serializers/environment_status_entity.rb
@@ -36,6 +36,8 @@ class EnvironmentStatusEntity < Grape::Entity
     es.deployment.try(:formatted_deployment_time)
   end
 
+  expose :changes, if: ->(*) { Feature.enabled?(:ci_environments_status_changes, project) }
+
   private
 
   def environment