1 files changed, 73 insertions, 0 deletions
diff --git a/app/services/concerns/admin/propagate_service.rb b/app/services/concerns/admin/propagate_service.rb
new file mode 100644
index 00000000000..c7a4bfaa4ca
--- /dev/null
+++ b/app/services/concerns/admin/propagate_service.rb
@@ -0,0 +1,73 @@
+# frozen_string_literal: true
+
+module Admin
+  module PropagateService
+    extend ActiveSupport::Concern
+
+    BATCH_SIZE = 100
+
+    delegate :data_fields_present?, to: :integration
+
+    class_methods do
+      def propagate(integration)
+        new(integration).propagate
+      end
+    end
+
+    def initialize(integration)
+      @integration = integration
+    end
+
+    private
+
+    attr_reader :integration
+
+    def create_integration_for_projects_without_integration
+      loop do
+        batch_ids = Project.uncached { Project.ids_without_integration(integration, BATCH_SIZE) }
+
+        bulk_create_from_integration(batch_ids) unless batch_ids.empty?
+
+        break if batch_ids.size < BATCH_SIZE
+      end
+    end
+
+    def bulk_create_from_integration(batch_ids)
+      service_list = ServiceList.new(batch_ids, service_hash).to_array
+
+      Service.transaction do
+        results = bulk_insert(*service_list)
+
+        if data_fields_present?
+          data_list = DataList.new(results, data_fields_hash, integration.data_fields.class).to_array
+
+          bulk_insert(*data_list)
+        end
+
+        run_callbacks(batch_ids)
+      end
+    end
+
+    def bulk_insert(klass, columns, values_array)
+      items_to_insert = values_array.map { |array| Hash[columns.zip(array)] }
+
+      klass.insert_all(items_to_insert, returning: [:id])
+    end
+
+    # rubocop: disable CodeReuse/ActiveRecord
+    def run_callbacks(batch_ids)
+      if integration.issue_tracker?
+        Project.where(id: batch_ids).update_all(has_external_issue_tracker: true)
+      end
+
+      if integration.type == 'ExternalWikiService'
+        Project.where(id: batch_ids).update_all(has_external_wiki: true)
+      end
+    end
+    # rubocop: enable CodeReuse/ActiveRecord
+
+    def data_fields_hash
+      @data_fields_hash ||= integration.to_data_fields_hash
+    end
+  end
+end