Fix attribute locking namespace conflict, duplicate syncs

app/models/sync.rb

@@ -95,6 +95,29 @@ class Sync < ApplicationRecord
     parent&.finalize_if_all_children_finalized
   end
 
+  # If a sync is pending, we can adjust the window if new syncs are created with a wider window.
+  def expand_window_if_needed(new_window_start_date, new_window_end_date)
+    return unless pending?
+    return if self.window_start_date.nil? && self.window_end_date.nil? # already as wide as possible
+
+    earliest_start_date = if self.window_start_date && new_window_start_date
+      [self.window_start_date, new_window_start_date].min
+    else
+      nil
+    end
+
+    latest_end_date = if self.window_end_date && new_window_end_date
+      [self.window_end_date, new_window_end_date].max
+    else
+      nil
+    end
+
+    update(
+      window_start_date: earliest_start_date,
+      window_end_date: latest_end_date
+    )
+  end
+
   private
     def log_status_change
       Rails.logger.info("changing from #{aasm.from_state} to #{aasm.to_state} (event: #{aasm.current_event})")