1 files changed, 80 insertions, 0 deletions
diff --git a/scripts/internal_events/cli/helpers/event_options.rb b/scripts/internal_events/cli/helpers/event_options.rb
new file mode 100755
index 00000000000..f53127798aa
--- /dev/null
+++ b/scripts/internal_events/cli/helpers/event_options.rb
@@ -0,0 +1,80 @@
+# frozen_string_literal: true
+
+# Helpers related to listing existing event definitions
+module InternalEventsCli
+  module Helpers
+    module EventOptions
+      def get_event_options(events)
+        options = events.filter_map do |(path, event)|
+          next if duplicate_events?(event.action, events.values)
+
+          description = format_help(" - #{trim_description(event.description)}")
+
+          {
+            name: "#{format_event_name(event)}#{description}",
+            value: path
+          }
+        end
+
+        options.sort_by do |option|
+          category = events.dig(option[:value], 'category')
+          event_sort_param(category, option[:name])
+        end
+      end
+
+      def events_by_filepath(event_paths = [])
+        event_paths = load_event_paths if event_paths.none?
+
+        get_existing_events_for_paths(event_paths)
+      end
+
+      private
+
+      def trim_description(description)
+        return description if description.to_s.length < 50
+
+        "#{description[0, 50]}..."
+      end
+
+      def format_event_name(event)
+        case event.category
+        when 'InternalEventTracking', 'default'
+          event.action
+        else
+          "#{event.category}:#{event.action}"
+        end
+      end
+
+      def event_sort_param(category, name)
+        case category
+        when 'InternalEventTracking'
+          "0#{name}"
+        when 'default'
+          "1#{name}"
+        else
+          "2#{category}#{name}"
+        end
+      end
+
+      def get_existing_events_for_paths(event_paths)
+        event_paths.each_with_object({}) do |filepath, events|
+          details = YAML.safe_load(File.read(filepath))
+          fields = InternalEventsCli::NEW_EVENT_FIELDS.map(&:to_s)
+
+          events[filepath] = Event.new(**details.slice(*fields))
+        end
+      end
+
+      def duplicate_events?(action, events)
+        events.count { |event| action == event.action } > 1
+      end
+
+      def load_event_paths
+        [
+          Dir["config/events/*.yml"],
+          Dir["ee/config/events/*.yml"]
+        ].flatten
+      end
+    end
+  end
+end