add form events api

app/controllers/api/api_base_controller.rb

@@ -39,12 +39,17 @@ module Api
 
     private
 
-    def paginate(relation)
-      result = relation.order(id: :desc)
+    def paginate(relation, field: :id)
+      result = relation.order(field => :desc)
                        .limit([params.fetch(:limit, DEFAULT_LIMIT).to_i, MAX_LIMIT].min)
 
+      if field == :id
         result = result.where(id: ...params[:after].to_i) if params[:after].present?
         result = result.where(id: (params[:before].to_i + 1)...) if params[:before].present?
+      else
+        result = result.where(field => ...params[:after]) if params[:after].present?
+        result = result.where(field => (params[:before] + 1)...) if params[:before].present?
+      end
 
       result
     end

app/controllers/api/form_events_controller.rb

@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+module Api
+  class FormEventsController < ApiBaseController
+    load_and_authorize_resource :submitter, parent: false
+
+    def index
+      submitters = @submitters.where.not(completed_at: nil)
+
+      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?
+
+      submitters = paginate(
+        submitters.preload(template: :folder, submission: [:submitters, { audit_trail_attachment: :blob }],
+                           documents_attachments: :blob, attachments_attachments: :blob),
+        field: :completed_at
+      )
+
+      render json: {
+        data: submitters.map do |s|
+                {
+                  event_type: 'form.completed',
+                  timestamp: s.completed_at,
+                  data: Submitters::SerializeForWebhook.call(s)
+                }
+              end,
+        pagination: {
+          count: submitters.size,
+          next: submitters.last&.completed_at&.to_i,
+          prev: submitters.first&.completed_at&.to_i
+        }
+      }
+    end
+  end
+end

config/routes.rb

@@ -45,6 +45,9 @@ Rails.application.routes.draw do
     resources :tools, only: %i[] do
       post :merge, on: :collection
     end
+    scope 'events' do
+      resources :form_events, only: %i[index], path: 'form/:type'
+    end
   end
 
   resources :verify_pdf_signature, only: %i[create]