Remove previously exported project on new export request

changelogs/unreleased/georgekoltsov-add-regenerate-new-export-to-project-export.yml

+---
+title: Remove old export file when requesting new project export using API
+merge_request: 37427
+author:
+type: fixed

lib/api/project_export.rb

@@ -47,6 +47,8 @@ module API
       post ':id/export' do
         check_rate_limit! :project_export, [current_user]
 
+        user_project.remove_exports
+
         project_export_params = declared_params(include_missing: false)
         after_export_params = project_export_params.delete(:upload) || {}
 

spec/requests/api/project_export_spec.rb

@@ -338,6 +338,16 @@ RSpec.describe API::ProjectExport, :clean_gitlab_redis_cache do
       end
 
       context 'with download strategy' do
+        before do
+          Grape::Endpoint.before_each do |endpoint|
+            allow(endpoint).to receive(:user_project).and_return(project)
+          end
+        end
+
+        after do
+          Grape::Endpoint.before_each nil
+        end
+
         it 'starts' do
           expect_any_instance_of(Gitlab::ImportExport::AfterExportStrategies::WebUploadStrategy).not_to receive(:send_file)
 
@@ -345,6 +355,12 @@ RSpec.describe API::ProjectExport, :clean_gitlab_redis_cache do
 
           expect(response).to have_gitlab_http_status(:accepted)
         end
+
+        it 'removes previously exported archive file' do
+          expect(project).to receive(:remove_exports).once
+
+          post api(path, user)
+        end
       end
     end