Add event duplication feature with ticket types cloning

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

app/models/event.rb

@@ -102,6 +102,33 @@ class Event < ApplicationRecord
     !!allow_booking_during_event
   end
 
+  # Duplicate an event with all its ticket types
+  def duplicate
+    # Duplicate the event
+    new_event = self.dup
+    new_event.name = "Copie de #{name}"
+    new_event.slug = "#{slug}-copy-#{Time.current.to_i}"
+    new_event.state = :draft
+    new_event.created_at = Time.current
+    new_event.updated_at = Time.current
+    
+    Event.transaction do
+      if new_event.save
+        # Duplicate all ticket types
+        ticket_types.each do |ticket_type|
+          new_ticket_type = ticket_type.dup
+          new_ticket_type.event = new_event
+          new_ticket_type.save!
+        end
+        new_event
+      else
+        nil
+      end
+    end
+  rescue
+    nil
+  end
+
   private
 
   # Determine if we should perform server-side geocoding