add submission.completed

app/controllers/api/submission_events_controller.rb

@@ -0,0 +1,52 @@
+# frozen_string_literal: true
+
+module Api
+  class SubmissionEventsController < ApiBaseController
+    load_and_authorize_resource :submission, parent: false
+
+    def index
+      submissions = build_completed_query(@submissions)
+
+      params[:after] = Time.zone.at(params[:after].to_i) if params[:after].present?
+      params[:before] = Time.zone.at(params[:before].to_i) if params[:before].present?
+
+      submissions = paginate(submissions.preload(
+                               :created_by_user, :submission_events,
+                               template: :folder,
+                               submitters: { documents_attachments: :blob, attachments_attachments: :blob },
+                               audit_trail_attachment: :blob
+                             ),
+                             field: :completed_at)
+
+      render json: {
+        data: submissions.map do |s|
+                {
+                  event_type: 'submission.completed',
+                  timestamp: s.completed_at,
+                  data: Submissions::SerializeForApi.call(s, s.submitters)
+                }
+              end,
+        pagination: {
+          count: submissions.size,
+          next: submissions.last&.completed_at&.to_i,
+          prev: submissions.first&.completed_at&.to_i
+        }
+      }
+    end
+
+    private
+
+    def build_completed_query(submissions)
+      submissions = submissions.where(
+        Submitter.where(completed_at: nil).where(
+          Submitter.arel_table[:submission_id].eq(Submission.arel_table[:id])
+        ).select(1).arel.exists.not
+      )
+
+      submissions.joins(:submitters)
+                 .group(:id)
+                 .select(Submission.arel_table[Arel.star],
+                         Submitter.arel_table[:completed_at].maximum.as('completed_at'))
+    end
+  end
+end